JPS6361478B2 - - Google Patents
Info
- Publication number
- JPS6361478B2 JPS6361478B2 JP58039520A JP3952083A JPS6361478B2 JP S6361478 B2 JPS6361478 B2 JP S6361478B2 JP 58039520 A JP58039520 A JP 58039520A JP 3952083 A JP3952083 A JP 3952083A JP S6361478 B2 JPS6361478 B2 JP S6361478B2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- backfilling material
- backfilling
- gap
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000002347 injection Methods 0.000 claims description 116
- 239000007924 injection Substances 0.000 claims description 116
- 239000000463 material Substances 0.000 claims description 81
- 239000007788 liquid Substances 0.000 description 34
- 238000009412 basement excavation Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 10
- 239000011800 void material Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
【発明の詳細な説明】
この発明は裏込注入圧力及び注入量管理装置に
関し、より詳細にはシールド工法によつてトンネ
ルを掘削する際に生じるセグメントと地山との間
の間隙に裏込材を注入する際の注入圧力及び注入
量を管理するための装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a backfill injection pressure and injection amount control device, and more specifically, the present invention relates to a backfill injection pressure and injection amount control device, and more specifically, the invention relates to a backfill injection pressure and injection amount control device, and more specifically, the invention relates to a backfill injection pressure and injection amount control device, and more specifically, a device for controlling backfill injection pressure and injection amount. This invention relates to a device for managing the injection pressure and injection amount when injecting.
一般に、シールド工法によつてトンネルを掘削
する場合、シールド掘削機の掘進にともなつて、
掘削機本体の後部内側にセグメントを順次接続し
ているため、セグメントと地山との間に間隙（テ
ールボイド）が形成される。このテールボイドは
そのまま放置しておくと地盤沈下の原因となるの
で、テールボイドが形成されると同時にその速度
に応じて裏込材を注入し、テールボイドを完全に
充填している。 Generally, when excavating a tunnel using the shield method, as the shield excavator excavates,
Since the segments are sequentially connected to the inside rear of the excavator body, a gap (tail void) is formed between the segments and the ground. If these tail voids are left as they are, they will cause ground subsidence, so as soon as the tail voids are formed, backfilling material is injected at the same speed to completely fill the tail voids.
従来、裏込材の注入方式としては特公昭57−
53519号公報あるいは特公昭57−53520号公報に開
示されているように、掘削機の推進速度と掘削機
外径寸法などの所定データとからテールボイドの
容積を算出し、この容積と注入率とから最適注入
量を算出し、この算出された最適注入量になるよ
うに裏込材の流量を制御するようにしたものがあ
る。しかし、通常の掘削機の場合、地盤によつて
は掘削機本体外径以上の掘削すなわち余掘りをす
ることがあり、そのため前記のようにして算出し
たテールボイドの容積は実際の容積よりも小さく
なり、したがつて実際の注入率はそれ以下となつ
て裏込材の充填が不十分になる恐れが生じてく
る。 Conventionally, the injection method for backfilling material was
As disclosed in Publication No. 53519 or Japanese Patent Publication No. 57-53520, the volume of the tail void is calculated from predetermined data such as the propulsion speed of the excavator and the external diameter of the excavator, and the volume of the tail void is calculated from this volume and the injection rate. There is a system that calculates the optimum injection amount and controls the flow rate of the backfilling material so as to reach the calculated optimum injection amount. However, in the case of a normal excavator, depending on the ground, it may be necessary to excavate more than the outer diameter of the excavator itself, that is, to over-excavate, so the volume of the tail void calculated as described above may be smaller than the actual volume. Therefore, the actual injection rate will be lower than that, and there is a risk that the filling of the backing material will be insufficient.
また上記従来方式においては、注入率は裏込材
を給送する配管に圧力計を設け、この圧力計の測
定値に基ずいて設定されているが、配管に閉塞等
が生じた場合、テールボイド内の裏込材の圧力が
低くても圧力計の指示圧力が上昇して注入率が下
がり、裏込材の注入量が最適注入量よりも小さく
なつて、裏込材の充填が不十分になる結果を紹
く。 In addition, in the above conventional method, the injection rate is set based on the measured value of a pressure gauge installed in the pipe that feeds the backfilling material, but if a blockage occurs in the pipe, the injection rate Even if the pressure of the backfilling material inside is low, the indicated pressure of the pressure gauge will rise and the injection rate will drop, and the injection amount of the backfilling material will be smaller than the optimum injection amount, resulting in insufficient filling of the backfilling material. Introducing the results.
この発明は上記のような従来方式のもつ欠点を
排除し、算出するテールボイドの容積を実際の容
積に近似させ、裏込材の注入を過不足なく行うこ
とができる装置を提供することを目的とする。 The purpose of this invention is to eliminate the drawbacks of the conventional method as described above, approximate the calculated volume of the tail void to the actual volume, and provide an apparatus that can inject backfilling material in just the right amount. do.
またこの発明はテールボイド内に裏込材の圧力
を測定し、この圧力に基ずいて注入率を設定し、
裏込材の注入を過不足なく行うことができる装置
を提供することを他の目的とする。 In addition, this invention measures the pressure of the backing material in the tail void, sets the injection rate based on this pressure,
Another object of the present invention is to provide an apparatus that can inject just the right amount of backfilling material.
この発明の第１は、シールド掘削機本体と地山
との間の間隙寸法を測定する部材と、その測定値
を記憶する部材と、掘削機の推進速度を測定する
部材と、前記間隙寸法が測定された位置において
裏込材を注入する際に、記憶部材に記憶された間
隙寸法と測定された推進速度と掘削機本体の外径
寸法などの所定データとからセグメントと地山と
の間の間隙の容積を算出する演算部材と、注入さ
れる裏込材の圧力をその給送系路において測定す
る部材と、この測定部材の測定値に基ずいて裏込
材の注入率を設定する部材と、算出された前記間
隙の容積と設定された前記注入率とから裏込材の
最適注入量を算出する演算部材と、裏込材の流量
を測定する部材と、裏込材の最適注入量と裏込材
の流量とを比較し、その差に基ずき裏込材の流量
を制御する部材とを具えてなる裏込注入圧力及び
注入量管理装置であつて、掘削機本体と地山との
間の間隙寸法すなわち余掘深さを測定し、この間
隙寸法を加味してセグメントと地山との間の間隙
の容積を算出するから、実際の容積との誤差が小
さくなり、過不足ない裏込材の注入を行うことが
できる。 The first aspect of the invention is to include a member for measuring the gap size between the shield excavator main body and the ground, a member for storing the measured value, a member for measuring the propulsion speed of the excavator, and a member for measuring the gap size between the shield excavator main body and the ground. When injecting backfilling material at the measured position, the distance between the segment and the ground is determined based on the gap size stored in the memory member, the measured propulsion speed, and predetermined data such as the outer diameter of the excavator body. A calculation member that calculates the volume of the gap, a member that measures the pressure of the injected backfilling material in its feeding system, and a member that sets the injection rate of the backfilling material based on the measured value of this measurement member. a calculation member that calculates the optimum injection amount of the backfilling material from the calculated volume of the gap and the set injection rate; a member that measures the flow rate of the backfilling material; and an optimum injection amount of the backfilling material. A backfilling injection pressure and injection amount control device comprising a member that compares the flow rate of the backfilling material and the flow rate of the backfilling material and controls the flow rate of the backfilling material based on the difference, The gap size between the segment and the ground is measured, and the volume of the gap between the segment and the ground is calculated by taking this gap size into account. It is possible to perform injection of backfilling material without any need for backfilling.
この発明の第２は、上記第１発明の「注入され
る裏込材の圧力を給送系路において測定する部
材」に替わり、裏込材の圧力を掘削機本体外周の
後部において測定する部材を具えた裏込注入圧力
及び注入量管理装置であつて、注入率はこの測定
部材の測定値に基ずいて設定されるから、裏込材
の給送系路に閉塞等が生じてもそれによつて注入
率が下がることがなく、過不足ない裏込材の注入
を行うことができる。 The second aspect of the invention is a member that measures the pressure of the backfill material at the rear of the outer periphery of the excavator body, in place of the "member that measures the pressure of the injected backfill material in the feed line" of the first invention. This is a backfilling injection pressure and injection amount control device equipped with a Therefore, the injection rate does not decrease, and it is possible to inject just the right amount of backfilling material.
以下図面に示す実施例を参照してこの発明を説
明する。 The present invention will be described below with reference to embodiments shown in the drawings.
第１図に示すように１はシールド掘削機であつ
て、その掘進に伴つて本体２の後部にセグメント
３を順次接続して一次覆工を形成してゆく。セグ
メント３は本体２の内側に接続されるため、セグ
メント３と地山４との間に間隙（テールボイド）
５が生じ、この間隙５にセグメント３に穿設され
た注入口６から裏込材７を充填し、地山４の緩み
を抑えるようにしている。この実施例では裏込材
７は１種類が使用され、セグメント３の注入口６
は配管８を介して裏込材タンク９に接続されてい
る。配管８には弁１０、圧力計１１、流量計１
２、および可変速モータ１３に連結された注入ポ
ンプ１４がそれぞれ設置されている。 As shown in FIG. 1, 1 is a shield excavator, and as the excavator 1 excavates, segments 3 are successively connected to the rear of the main body 2 to form a primary lining. Since the segment 3 is connected to the inside of the main body 2, there is a gap (tail void) between the segment 3 and the ground 4.
5 is generated, and this gap 5 is filled with a backing material 7 through an injection port 6 drilled in the segment 3 to suppress loosening of the ground 4. In this embodiment, one type of backfilling material 7 is used, and the injection port 6 of the segment 3
is connected to a backfilling material tank 9 via a pipe 8. Piping 8 has a valve 10, a pressure gauge 11, and a flow meter 1.
2, and an infusion pump 14 connected to a variable speed motor 13, respectively.
シールド掘削機１には、ロツド１４が本体２に
出没可能に嵌合されたジヤツキ１５が取付けら
れ、ロツド１４はその先端がカツタ１６近傍の地
山４に到達可能となつている。ロツド１４の先端
には図示しない圧力計が取付けられており、この
圧力計によつて地山に到達したことを検知し、そ
のときのストロークをストローク検出部材１７に
よつて検出し、本体２と地山４との間の間隙寸法
（余掘深さｄ）を測定するようになつている。シ
ールド掘削機１はセグメント３によつて反力を受
けるジヤツキ１８によつて推進され、このジヤツ
キ１８には推進速度検出部材１９が設けられてい
る。本体２の後部外周には、天端および両側部位
置に土圧計２０がそれぞれ設けられていて、後部
外周に作用する圧力を測定するようになつてい
る。 A jack 15 is attached to the shield excavator 1, and the rod 14 is fitted into the main body 2 so as to be retractable, and the tip of the rod 14 can reach the ground 4 near the cutter 16. A pressure gauge (not shown) is attached to the tip of the rod 14. This pressure gauge detects when the rod reaches the ground, and the stroke detection member 17 detects the stroke at that time. The gap size (over-excavation depth d) between the ground and the ground 4 is measured. The shield excavator 1 is propelled by a jack 18 which receives a reaction force from the segment 3, and this jack 18 is provided with a propulsion speed detection member 19. Earth pressure gauges 20 are provided at the top and both sides of the rear outer periphery of the main body 2 to measure the pressure acting on the rear outer periphery.
第２図にはこの実施例を構成する上記各部材お
よび制御部材がブロツク図で示されており、これ
を動作とともに説明する。 FIG. 2 shows a block diagram of the above-mentioned members and control members constituting this embodiment, which will be explained together with their operation.
掘削停止中にジヤツキ１５を作動させてストロ
ーク検出部材１７により余深深さｄを測定する。
その測定信号は記憶器２１に入力され、この記憶
器２１は余掘深さｄの測定位置において裏込材７
を注入するときまで余掘深さｄを記憶する。シー
ルド掘削機１が進行して余掘深さｄの測定位置に
おいて裏込材７を注入する際に、記憶器２１の信
号に演算器２２に入力され、演算器２２は余掘深
さｄ、あらかじめ設定されている本体外径D1、
およびセグメント外径D2とから間隙５の面積を
算出する。演算器２２にはさらに推進速度検出部
材１９の信号が入力され、前記面積と推進速度と
から単位時間当りに形成される間隙５の容積を算
出する。 While excavation is stopped, the jack 15 is operated and the additional depth d is measured by the stroke detection member 17.
The measurement signal is input to a memory device 21, and this memory device 21 stores the backfilling material 7 at the measurement position of the over-excavation depth d.
The additional excavation depth d is memorized until the time of injection. When the shield excavator 1 advances and injects the backfilling material 7 at the measurement position of the over-excavation depth d, the signal of the memory 21 is input to the calculator 22, and the operator 22 calculates the over-excavation depth d, The preset main body outer diameter D 1 ,
The area of the gap 5 is calculated from the segment outer diameter D2 . The signal from the propulsion speed detection member 19 is further input to the calculator 22, and the volume of the gap 5 formed per unit time is calculated from the area and the propulsion speed.
土圧指示警報計２３には変換器２０′を介して
土圧計２０の測定信号が入力され、土圧指示警報
計２３は土圧計２０の測定値（例えば天端および
両側部の土圧計２０の計測値の最高値）に基ずく
信号を注入率設定器２５に送り、この注入率設定
器２５においてあらかじめ人為的に設定されてい
る裏込材７の注入率（間隙５の容積に対する裏込
材７の注入量の割合）の新たな設定がなされる。
すなわち土圧指示警報計２３には上限圧力が設定
されていて、土圧指示警報計２３は間隙５内にお
ける裏込材７の圧力が上昇して土圧計２０の測定
値が上限圧力よりも高くなつたときに警報信号を
注入率設定器２５に送つて注入率を下げさせ、土
圧計２０の測定値が上限圧力以下であれば一定の
信号を注入率設定器２５に送り人為的に設定され
た注入率を維持させる。なお土圧指示警報計２３
に設定される上限圧力は、例えば泥水式シールド
掘削機の場合、切羽泥水圧力よりも幾分か高く設
定する。 A measurement signal from the earth pressure gauge 20 is input to the earth pressure indicator/alarm gauge 23 via a converter 20', and the earth pressure indicator/alarm gauge 23 receives the measured values of the earth pressure gauge 20 (for example, the earth pressure gauges 20 at the top and both sides). A signal based on the highest value of the measured value) is sent to the injection rate setting device 25, and the injection rate of the backfilling material 7 (the injection rate of the backfilling material relative to the volume of the gap 5) is artificially set in advance in the injection rate setting device 25. A new setting is made for the ratio of injection volume of 7).
That is, an upper limit pressure is set in the earth pressure indicator and alarm meter 23, and the earth pressure indicator and alarm meter 23 detects when the pressure of the backfilling material 7 in the gap 5 increases and the measured value of the earth pressure gauge 20 becomes higher than the upper limit pressure. When the temperature rises, an alarm signal is sent to the injection rate setting device 25 to lower the injection rate, and if the measured value of the earth pressure gauge 20 is below the upper limit pressure, a constant signal is sent to the injection rate setting device 25 to artificially set the injection rate. maintain the same injection rate. In addition, earth pressure indicator alarm meter 23
For example, in the case of a muddy shield excavator, the upper limit pressure set is set somewhat higher than the face muddy water pressure.
注入率設定器２５の信号は演算器２２に入力さ
れ、演算器２２は前記間隙５の容積に注入率を乗
算してシールド掘削機１の推進速度に応じた裏込
材７の最適注入量を算出し、この算出された信号
は流量調節計２６に入力される。流量計１２で測
定された信号は流量調節計２６に入力され、流量
調節計２６は最適注入量と測定流量との間に差が
あればその偏差に応じた修正信号を制御装置２７
を経て注入ポンプ１４の可変速モータ１３に送
り、その回転数を変化させ、裏込材７の流量が最
適注入量となるように調節する。 The signal from the injection rate setter 25 is input to the calculator 22, and the calculator 22 multiplies the volume of the gap 5 by the injection rate to determine the optimum injection amount of the backfill material 7 according to the propulsion speed of the shield excavator 1. The calculated signal is input to the flow rate controller 26. The signal measured by the flowmeter 12 is input to the flow rate controller 26, and if there is a difference between the optimum injection amount and the measured flow rate, the flow rate controller 26 sends a correction signal according to the deviation to the control device 27.
The liquid is then sent to the variable speed motor 13 of the injection pump 14, and its rotational speed is varied to adjust the flow rate of the backfilling material 7 to the optimum injection amount.
上記のようにして流量が調節される裏込材７は
配管８を経て間隙５に圧送され、本体２の外周に
設けた土圧計２０の測定値が裏込材７の注入圧力
によつて上限圧力よりも上昇すると、前記したよ
うに注入率があらかじめ設定された値よりも下が
り、したがつて最適注入量が下がる。流量調節計
２６は裏込材７の流量が降下した最適注入量とな
るように注入ポンプ１４の回転数を減少させ、こ
れにより土圧計２０の測定値が上限圧力以下にな
れば、注入率があらかじめ設定された値に戻り、
最適注入量もそれに応じたものとなる。 The backfilling material 7 whose flow rate is adjusted as described above is pumped into the gap 5 through the piping 8, and the measured value of the earth pressure gauge 20 provided on the outer periphery of the main body 2 is set at the upper limit by the injection pressure of the backfilling material 7. If the pressure is increased above that, the injection rate will fall below the preset value, as described above, and the optimum injection volume will therefore fall. The flow rate controller 26 decreases the rotation speed of the injection pump 14 so that the flow rate of the backfilling material 7 becomes the optimal injection amount, and when the measured value of the earth pressure gauge 20 becomes below the upper limit pressure, the injection rate is increased. Return to preset value,
The optimum injection amount will also be determined accordingly.
第３，４図は別の実施例を示し、上記実施例と
同様な部材については同一符号を付してあり、主
として異なつている部分の説明をする。 FIGS. 3 and 4 show another embodiment, in which the same members as in the above embodiment are designated by the same reference numerals, and the explanation will mainly be given to the different parts.
この実施例は間隙５に２種類からなる混合裏込
材３０を注入する例であつて、注入口６は配管８
および分岐配管８ａ，８ｂを介して、それぞれ異
なつた種類の裏込材Ａ液、Ｂ液が収容された２つ
の裏込材タンク９ａ，９ｂに接続されている。分
岐配管８ａ，８ｂには流量計１２ａ，１２ｂ、可
変速モータ１３ａ，１３ｂに連結された注入ポン
プ１４ａ，１４ｂがそれぞれ設置されている。配
管８にはミキサ２８が設置されていて、裏込材Ａ
液、Ｂ液はこのミキサ２８によつて混合され、混
合裏込材３０として間隙５に注入される。 This embodiment is an example in which a mixed backfilling material 30 consisting of two types is injected into the gap 5, and the injection port 6 is connected to the pipe 8.
It is connected via branch pipes 8a, 8b to two backfilling material tanks 9a, 9b containing different types of backfilling materials A and B, respectively. Flowmeters 12a, 12b and injection pumps 14a, 14b connected to variable speed motors 13a, 13b are installed in the branch pipes 8a, 8b, respectively. A mixer 28 is installed in the pipe 8, and the backfilling material A
The liquid and B liquid are mixed by this mixer 28 and injected into the gap 5 as a mixed backfilling material 30.
第４図はこの実施例を構成する上記各部材およ
び制御部材を示すブロツク図であつて、これを動
作とともに説明する。 FIG. 4 is a block diagram showing the above-mentioned members and control members constituting this embodiment, which will be explained together with their operation.
掘削停止中にジヤツキ１５によつて余掘深さｄ
を測定し、その測定値を記憶器２１に記憶させ、
余掘深さｄの測定位置において混合裏込材３０を
注入する際に、演算器２２は余掘深さｄ、あらか
じめ設定されている本体外径D1、セグメント外
径D2およびジヤツキ１８の推進速度から単位時
間当りに形成される間隙５の容積を算出する。 Excavation depth d is determined by jack 15 while excavation is stopped.
and store the measured value in the storage device 21,
When injecting the mixed backfilling material 30 at the measurement position of the over-excavation depth d, the calculator 22 calculates the over-excavation depth d, the preset main body outer diameter D 1 , the segment outer diameter D 2 and the jack 18 . The volume of the gap 5 formed per unit time is calculated from the propulsion speed.
土圧指示警報計２３には土圧計２０の測定信号
が入力され、土圧指示警報計２３は土圧計２０の
測定値に基ずく信号を注入率設定器２５に送り、
この注入率設定器２５においてあらかじめ人為的
に設定されている混合裏込材３０の注入率の新た
な設定がなされる。すなわち土圧指示警報計２３
には上限圧力が設定されていて、土圧指示警報計
２３は間隙５内における混合裏込材３０の圧力が
上昇して土圧計２０の測定値が上限圧力よりも高
くなつたときに警報信号を注入率設定器２５に送
つて注入率を下げさせ、土圧計２０の測定値が上
限圧力以下であれば一定の信号を注入率設定器２
５に送り人為的に設定された注入率を維持させ
る。 The measurement signal of the earth pressure meter 20 is input to the earth pressure indicator and alarm meter 23, and the earth pressure indicator and alarm meter 23 sends a signal based on the measured value of the earth pressure meter 20 to the injection rate setting device 25.
In this injection rate setting device 25, the injection rate of the mixed backfilling material 30, which has been artificially set in advance, is newly set. In other words, earth pressure indicator alarm meter 23
An upper limit pressure is set for the earth pressure indicator and alarm meter 23, and when the pressure of the mixed backfill material 30 in the gap 5 increases and the measured value of the earth pressure meter 20 becomes higher than the upper limit pressure, an alarm signal is sent. is sent to the injection rate setting device 25 to lower the injection rate, and if the measured value of the earth pressure gauge 20 is below the upper limit pressure, a constant signal is sent to the injection rate setting device 2.
5 to maintain the artificially set injection rate.
注入率設定器２５の信号は演算器２２に入力さ
れ、演算器２２は間隙５の容積に注入率を乗算し
て混合裏込材３０の最適注入量を算出する。比率
設定器２９には裏込材Ａ液とＢ液との混合比率が
あらかじめ人為的に設定されており、この比率設
定器２９の信号は演算器２２に入力され、演算器
２２は前記最適注入量と混合比率とからＡ液最適
注入量およびＢ液最適注入量を算出し、算出され
たＡ液最適注入量およびＢ液最適注入量の各信号
はそれぞれＡ液流量調節計２６ａおよびＢ液流量
調節計２６ｂに入力される。 The signal from the injection rate setter 25 is input to the calculator 22, and the calculator 22 multiplies the volume of the gap 5 by the injection rate to calculate the optimum injection amount of the mixed backfilling material 30. The mixing ratio of backfilling materials A and B is artificially set in advance in the ratio setting device 29, and the signal from this ratio setting device 29 is input to the calculator 22, which calculates the optimum injection ratio. The optimum injection amount of liquid A and the optimum injection amount of liquid B are calculated from the amount and mixing ratio, and the signals of the calculated optimum injection amount of liquid A and optimum injection amount of liquid B are sent to the liquid A flow rate controller 26a and the liquid B flow rate, respectively. It is input to the controller 26b.
Ａ液流量計１２ａの測定信号は演算器２２を経
てＡ液流量調節計２６ａに入力され、Ａ液流量調
節計２６ａはＡ液最適注入量と測定流量との間に
差があればその偏差に応じた修正信号をＡ液制御
装置２７ａを経てＡ液注入ポンプ１４ａの可変速
モータ１３ａに送り、その回転数を変化させ、Ａ
液の流量がＡ液最適注入量となるように調節す
る。同様にＢ液流量計１２ｂの測定信号は演算器
２２を経てＢ液流量調節計２６ｂに入力され、Ｂ
液流量調節計２６ｂはＢ液最適注入量と測定流量
との間に差があればその偏差に応じた修正信号を
Ｂ液制御装置２７ｂを経てＢ液注入ポンプ１４ｂ
の可変速モータ１３ｂに送り、その回転数を変化
させ、Ｂ液の流量がＢ液最適注入量となるように
調節する。 The measurement signal of the liquid A flow meter 12a is input to the liquid A flow rate controller 26a via the calculator 22, and the liquid A flow rate controller 26a detects the difference between the optimum injection amount of liquid A and the measured flow rate. A corresponding correction signal is sent to the variable speed motor 13a of the A liquid injection pump 14a via the A liquid control device 27a, and its rotational speed is changed.
Adjust the flow rate of the liquid to the optimum injection amount of liquid A. Similarly, the measurement signal of the B liquid flow meter 12b is inputted to the B liquid flow rate controller 26b via the calculator 22, and
If there is a difference between the optimum injection amount of B liquid and the measured flow rate, the liquid flow rate controller 26b sends a correction signal according to the deviation to the B liquid injection pump 14b via the B liquid control device 27b.
The B liquid is sent to the variable speed motor 13b, and its rotational speed is changed to adjust the flow rate of the B liquid to the optimum injection amount of the B liquid.
上記のようにして流量が調節されるAB両液は
ミキサ２８によつて混合され、配管８を経て間隙
５に混合裏込材３０として圧送される。本体２の
外周に設けた土圧計２０の測定値が混合裏込材の
注入圧力によつて上昇すると、前記したように注
入率があらかじめ設定された値よりも下がり、し
たがつて混合裏込材３０の最適注入量が下がる。
演算器２２は降下した最適注入量と混合比率とか
らＡ液最適注入量およびＢ液最適注入量を算出す
る。Ａ液流量調節計２６ａおよびＢ液流量調節計
２６ｂはＡ、Ｂ液の流量が降下したＡ液最適注入
量およびＢ液最適注入量となるように、注入ポン
プ１４ａ，１４ｂの回転数を減少させ、これによ
り土圧計２０の測定値が上限圧力以下になれば、
注入率があらかじめ設定された値に戻り、混合裏
込材の最適注入量もそれに応じたものとなる。 The AB liquids, the flow rates of which are adjusted as described above, are mixed by the mixer 28 and are fed under pressure to the gap 5 as a mixed backfilling material 30 via the pipe 8. When the measured value of the earth pressure gauge 20 provided on the outer periphery of the main body 2 increases due to the injection pressure of the mixed backfill material, the injection rate decreases below the preset value as described above, and therefore the mixed backfill material decreases. The optimal injection volume of 30 is lowered.
The computing unit 22 calculates the optimal injection amount of liquid A and the optimal injection amount of liquid B from the decreased optimal injection amount and the mixing ratio. The A liquid flow rate controller 26a and the B liquid flow rate regulator 26b reduce the rotational speed of the injection pumps 14a and 14b so that the flow rates of the A and B liquids become the optimal injection amounts of the A liquid and the B liquid. , If the measured value of the earth pressure gauge 20 becomes below the upper limit pressure,
The injection rate returns to the preset value, and the optimum injection amount of the mixed backfilling material also changes accordingly.
上記各実施例とも、注入率の設定は従来のよう
に配管８に設けた圧力計１１に基ずいて行うよう
にしてもよい。すなわち圧力計１１の測定信号が
変換器１１′を介して圧力指示警報計２４に入力
されるようにし、圧力指示警報計２４に上限圧力
および下限圧力を設定する。そして圧力計１１の
測定値が上限圧力よりも高くなつたときに、圧力
指示警報計２４が警報信号を注入率設定器２５に
送つて注入率を下げさせ、圧力計１１の測定値が
下限圧力よりも低くなつたときに注入率を上げさ
せ、圧力計１１の測定値が上下限圧力内であれば
一定の信号を注入率設定器２５に送り人為的に設
定された注入率を維持させるようにする。 In each of the above embodiments, the injection rate may be set based on the pressure gauge 11 provided in the piping 8 as in the prior art. That is, the measurement signal of the pressure gauge 11 is inputted to the pressure indicator/alarm gauge 24 via the converter 11', and an upper limit pressure and a lower limit pressure are set in the pressure indicator/alarm gauge 24. When the measured value of the pressure gauge 11 becomes higher than the upper limit pressure, the pressure indicator and alarm meter 24 sends an alarm signal to the injection rate setting device 25 to lower the injection rate, and the measured value of the pressure gauge 11 becomes higher than the lower limit pressure. If the measured value of the pressure gauge 11 is within the upper and lower limit pressures, a certain signal is sent to the injection rate setting device 25 to maintain the artificially set injection rate. Make it.
この発明は上記のようであつて、掘削機本体と
地山との間の間隙寸法を測定して、その測定値と
掘削機の推進速度と掘削機本体の外径寸法などの
所定データとから裏込材が注入されるセグメント
と地山との間の間隙の容積を算出するので、すな
わち余掘量を加味して間隙の容積を算出するの
で、実際の間隙の容積との誤差が小さくなり、裏
込材の過不足による地表面への影響をなくすこと
ができる。 This invention is as described above, and measures the size of the gap between the excavator body and the ground, and uses the measured value and predetermined data such as the propulsion speed of the excavator and the outer diameter dimension of the excavator body. Since the volume of the gap between the segment where the backfilling material is injected and the ground is calculated, that is, the volume of the gap is calculated by taking into account the amount of excess excavation, so the error with the actual volume of the gap is reduced. , it is possible to eliminate the effects on the ground surface due to excess or deficiency of backing material.
また注入される裏込材の圧力を掘削機本体外周
の後部において測定し、その測定値に基ずいて裏
込材の注入率を設定することにより、裏込材の給
送系路に閉塞等が生じてもそれによつて注入率が
下がることがなく、過不足ない裏込材の注入を行
うことができる。 In addition, by measuring the pressure of the backfill material to be injected at the rear of the outer periphery of the excavator body and setting the injection rate of the backfill material based on the measured value, it is possible to prevent blockages in the backfill material supply path. Even if this occurs, the injection rate will not decrease as a result, and the backfilling material can be injected in just the right amount.
第１，２図はこの発明の第１実施例を示し、第
１図は各機器の配置を示す縦断面図、第２図は第
１図に示した各機器および制御部材のブロツク
図、第３，４図は第２実施例を示し、第３図は各
機器の配置を示す縦断面図、第４図は第３図に示
した各機器および制御部材のブロツク図。
１……シールド掘削機、２……本体、３……セ
グメント、４……地山、５……間隙（テールボイ
ド）、７，３０……裏込材、１１……圧力計、１
２，１２ａ，１２ｂ……圧力計、１４，１４ａ，
１４ｂ……流量計、１５……ジヤツキ、１７……
ストローク検出部材、１８……ジヤツキ、１９…
…推進速度検出部材、２０……土圧計、２１……
記憶器、２２……演算器、２３……土圧指示警報
計、２４……圧力指示警報計、２５……注入率設
定器、２６，２６ａ，２６ｂ……流量調節計、２
９……比率設定器。
1 and 2 show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing the arrangement of each device, FIG. 2 is a block diagram of each device and control member shown in FIG. 1, and FIG. 3 and 4 show the second embodiment, FIG. 3 is a longitudinal sectional view showing the arrangement of each device, and FIG. 4 is a block diagram of each device and control member shown in FIG. 3. 1...Shield excavator, 2...Main body, 3...Segment, 4...Ground, 5...Gap (tail void), 7, 30...Backfilling material, 11...Pressure gauge, 1
2, 12a, 12b...pressure gauge, 14, 14a,
14b...flow meter, 15...jacket, 17...
Stroke detection member, 18... Jacket, 19...
...Propulsion speed detection member, 20...Earth pressure gauge, 21...
Memory device, 22...Arithmetic unit, 23...Earth pressure indicator and alarm meter, 24...Pressure indicator and alarm meter, 25...Injection rate setting device, 26, 26a, 26b...Flow rate controller, 2
9... Ratio setting device.
Claims (1)
メントと地山との間に生じる間隙に注入する裏込
材の注入圧力及び注入量を管理する装置であつ
て、前記掘削機本体と地山との間の間隙寸法を測
定する部材と、その測定値を記憶する部材と、掘
削機の推進速度を測定する部材と、前記間隙寸法
が測定された位置において裏込材を注入する際
に、前記記憶部材に記憶された間隙寸法と測定さ
れた推進速度と掘削機本体の外径寸法などの所定
データとからセグメントと地山との間の間隙の容
積を算出する演算部材と、注入される裏込材の圧
力をその給送系路において測定する部材と、この
測定部材の測定値に基ずいて裏込材の注入率を設
定する部材と、算出された前記間隙の容積と設定
された前記注入率とから裏込材の最適注入量を算
出する演算部材と、前記裏込材の流量を測定する
部材と、裏込材の最適注入量と裏込材の流量とを
比較し、その差に基ずき裏込材の流量を制御する
部材とを具えてなる裏込注入圧力及び注入量管理
装置。 ２ 前記裏込材は所定の混合比率で混合される２
種の裏込材からなる特許請求の範囲第１項記載の
装置。 ３ シールド掘削機本体の後部に接続されるセグ
メントと地山との間に生じる間隙に注入する裏込
材の注入圧力及び注入量を管理する装置であつ
て、前記掘削機本体と地山との間の間隙寸法を測
定する部材と、その測定値を記憶する部材と、掘
削機の推進速度を測定する部材と、前記間隙寸法
が測定された位置において裏込材を注入する際
に、前記記憶部材に記憶された間隙寸法と測定さ
れた推進速度と掘削機本体の外径寸法などの所定
データとからセグメントと地山との間の間隙の容
積を算出する演算部材と、注入される裏込材の圧
力を掘削機本体外周の後部において測定する部材
と、この測定部材の測定値に基ずいて裏込材の注
入率を設定する部材と、算出された前記間隙の容
積と設定された前記注入率とから裏込材の最適注
入量を算出する演算部材と、前記裏込材の流量を
測定する部材と、裏込材の最適注入量と裏込材の
流量とを比較し、その差に基ずき裏込材の流量を
制御する部材とを具えてなる裏込材注入圧力及び
注入量管理装置。 ４ 前記裏込材は所定の混合比率で混合される２
種の裏込材からなる特許請求の範囲第３項記載の
装置。[Scope of Claims] 1. A device for managing the injection pressure and amount of backfilling material injected into the gap formed between the segment connected to the rear of the shield excavator main body and the ground, the device comprising: A member that measures the gap size between the main body and the ground, a member that stores the measured value, a member that measures the propulsion speed of the excavator, and injects backfilling material at the position where the gap size is measured. a calculation member that calculates the volume of the gap between the segment and the ground from the gap size stored in the storage member, the measured propulsion speed, and predetermined data such as the outer diameter of the excavator body; , a member that measures the pressure of the injected backfilling material in its feeding system, a member that sets the injection rate of the backfilling material based on the measured value of this measuring member, and the calculated volume of the gap. a calculation member that calculates the optimum injection amount of the backfilling material from the set injection rate; a member that measures the flow rate of the backfilling material; and a calculation member that calculates the optimum injection amount of the backfilling material and the flow rate of the backfilling material. A backfilling injection pressure and injection amount control device comprising a member for comparing and controlling the flow rate of a backfilling material based on the difference. 2 The backfill material is mixed at a predetermined mixing ratio2
2. The device according to claim 1, comprising a seed backing material. 3 A device for controlling the injection pressure and injection amount of backfilling material to be injected into the gap between the segment connected to the rear of the shield excavator body and the ground, which is connected to the back of the excavator body and the ground. a member for measuring the gap size between the two; a member for storing the measured value; a member for measuring the propulsion speed of the excavator; A calculation member that calculates the volume of the gap between the segment and the ground based on the gap size stored in the member, the measured propulsion speed, and predetermined data such as the outer diameter of the excavator body, and the backfill to be injected. a member that measures the pressure of the material at the rear of the outer periphery of the excavator body; a member that sets the injection rate of the backfill material based on the measured value of the measuring member; and a member that sets the injection rate of the backfill material based on the measured value of the measuring member; A calculation member that calculates the optimum injection amount of the backfill material from the injection rate, a member that measures the flow rate of the backfill material, and a calculation member that compares the optimum injection amount of the backfill material and the flow rate of the backfill material, and calculates the difference between them. A backfilling material injection pressure and injection amount control device comprising: a member for controlling the flow rate of a backfilling material based on 4 The backfilling material is mixed at a predetermined mixing ratio 2
4. The device according to claim 3, comprising a seed backing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58039520A JPS59165798A (en) | 1983-03-09 | 1983-03-09 | Back-filling injection pressure and amount control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58039520A JPS59165798A (en) | 1983-03-09 | 1983-03-09 | Back-filling injection pressure and amount control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59165798A JPS59165798A (en) | 1984-09-19 |
| JPS6361478B2 true JPS6361478B2 (en) | 1988-11-29 |
Family
ID=12555314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58039520A Granted JPS59165798A (en) | 1983-03-09 | 1983-03-09 | Back-filling injection pressure and amount control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59165798A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61137999A (en) * | 1984-12-06 | 1986-06-25 | 西松建設株式会社 | Back injection of shield construction method |
| JPH0455115Y2 (en) * | 1987-05-28 | 1992-12-24 | ||
| JPH01310097A (en) * | 1988-06-06 | 1989-12-14 | Daimei Denwa Kogyo Kk | Injection pump discharge controller for backfilling material simultaneous automatic dosing device |
| JPH0791183A (en) * | 1993-09-21 | 1995-04-04 | Tekken Constr Co Ltd | Back-filling and injection method and device thereof |
| JP7106069B2 (en) * | 2018-06-18 | 2022-07-26 | 岐阜工業株式会社 | Concrete winding thickness measuring device |
| JP7700473B2 (en) * | 2021-03-03 | 2025-07-01 | 株式会社大林組 | Backfill injection system |
-
1983
- 1983-03-09 JP JP58039520A patent/JPS59165798A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59165798A (en) | 1984-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111535821A (en) | Control method and system for soil improvement based on changes of shield tunneling parameters | |
| CN112922616A (en) | Method for controlling shield crossing construction | |
| JPS6361478B2 (en) | ||
| JP7287834B2 (en) | shield machine | |
| JP5672673B2 (en) | Method of digging a curved section with earth pressure shield machine | |
| JP5507411B2 (en) | Bubble injection system | |
| AU2015407253B2 (en) | Control system | |
| JP3383157B2 (en) | Chemical injection method | |
| CN115506800A (en) | Earth pressure balance shield machine earth bin pressure compensation system | |
| JP3018052B2 (en) | Solidification material filling method in cast-in-place foundation work, etc. | |
| JPH0235839B2 (en) | SHIIRUDOSHIKITONNERUKUTSUSAKUKI | |
| JPH0452397A (en) | Controlling method for excavation of shield machine | |
| JP7692671B2 (en) | Fluid pumping system for shield tunneling machines | |
| CN115928828B (en) | Double-wheel milling cement soil deep stirring wall slurry supply device and method | |
| JPH02176096A (en) | Tail seal device for shield tunneling machine | |
| JPH0319360B2 (en) | ||
| JP2024108551A (en) | Mortar injection system and mortar injection method using the same | |
| JPH0437919B2 (en) | ||
| JPH0248553Y2 (en) | ||
| JPS6183797A (en) | Air bubble injection apparatus for shield drilling construction method | |
| JPH03166500A (en) | Water feeding device for mortar kneading | |
| JP3131551B2 (en) | Face stabilization method of muddy water shield method | |
| JPS60357Y2 (en) | Powder injection stirring type ground improvement device | |
| JPH0252758B2 (en) | ||
| JP2004346615A (en) | Muddy water propulsion method and equipment used for it |