JPH0635796B2 - Shield method and slurry material for the same method - Google Patents
Shield method and slurry material for the same methodInfo
- Publication number
- JPH0635796B2 JPH0635796B2 JP63065790A JP6579088A JPH0635796B2 JP H0635796 B2 JPH0635796 B2 JP H0635796B2 JP 63065790 A JP63065790 A JP 63065790A JP 6579088 A JP6579088 A JP 6579088A JP H0635796 B2 JPH0635796 B2 JP H0635796B2
- Authority
- JP
- Japan
- Prior art keywords
- shield
- slurry material
- sludge
- construction method
- cellulose ether
- 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 - Lifetime
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
- E21D9/0678—Adding additives, e.g. chemical compositions, to the slurry or the cuttings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は市街地等におけるトンネルの構築工事に適用さ
れる泥漿シールド工法に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a sludge shield construction method applied to construction work of tunnels in urban areas and the like.
（従来の技術） 従来のこの種のシールド工法は次のような方法で行なわ
れていた。(Prior Art) A conventional shield construction method of this type has been performed by the following method.
ｉ）先ず、トンネル構築計画区間の始点と終点に、夫々
トンネル掘削用の発進立坑及び到達立坑を構築する。i) First, a starting shaft and a reaching shaft for tunnel excavation are constructed at the start point and the end point of the tunnel construction plan section, respectively.
ii）始点側の発進立坑内にシールド掘進機を配置したの
ち、同掘進機による掘進を開始する。ii) After placing the shield machine in the starting shaft on the starting point side, start excavation by the machine.
iii）掘削中は、掘削機前面の切羽の安定を図るため、
地上に設置した泥漿材作泥プラントにより、配管を通じ
て坑内に配置された泥漿材注入用ポンプに泥漿材を送り
込み、そこから注入管により掘削機前面に同泥漿材を注
入しながら掘進する。iii) During excavation, in order to stabilize the face in front of the excavator,
The mud material production mud plant installed on the ground feeds the mud material into the pump for pouring mud material placed in the mine through the piping, and from there, injects the mud material into the front of the excavator through the injection pipe and proceeds.
前記泥漿材としては、次の２種類のうち、いずれかが使
用される。As the slurry material, one of the following two types is used.
a) （水＋ベントナイト＋粉末粘土）を混練した泥漿
材。a) Slurry material made by kneading (water + bentonite + powdered clay).
b) （水＋ＣＭＣ＋粉末粘土）を混練した泥漿材。b) A slurry material in which (water + CMC + powdered clay) is kneaded.
iv）掘作土砂は、排出用ベルトコンベアを通して、坑内
に配置された▲ずり▼運搬車に積込み、そこからバツテ
リー式機関車等によって発進立坑に運搬され、地上のク
レーンによって土砂ポツパーへ投入される。そこからダ
ンプトラツクで、一旦、仮置場へ運搬し、そこで天日乾
燥して良質土と混合した後一般残土として処分するか、
遠隔地の産業廃棄物処理場へ運搬して産業廃棄物として
処分する。iv) The excavated earth and sand is loaded on the ▲ slide ▼ carriage located in the mine through the belt conveyor for discharge, from where it is carried to the starting shaft by a buttery type locomotive, etc., and is thrown into the earth and sand popper by a crane on the ground. . From there, once by dump truck, transport to a temporary storage place, dry in the sun there, mix with good quality soil, and then dispose as general waste soil,
Transport to a remote industrial waste treatment plant and dispose of it as industrial waste.
ｖ）一方、掘削に並行して、順次掘削機後部に１リング
ごと鋼製またはコンクリート製のセグメントを円筒状に
巻立てていく。v) On the other hand, in parallel with the excavation, a segment made of steel or concrete is rolled up in a cylindrical shape together with one ring at the rear part of the excavator.
vi）前記iii）〜ｖ）の工程を繰り返しながら、到達立
坑までのセグメント巻立てが完了すると、到達立坑より
シールド掘削機を地上へ引き上げる。以上で一次覆工が
完了する。vi) When the segment winding up to the reaching shaft is completed while repeating the steps iii) to v), the shield excavator is lifted to the ground from the reaching shaft. This completes the primary lining.
vii）なお、鋼製セグメントを使用する場合には、さら
に二次覆工として、セグメントの内側をコンクリートで
所定の厚さに巻立てて、トンネルを構築する。vii) If steel segments are used, as a secondary lining, the inside of the segments is rolled up with concrete to a predetermined thickness to construct a tunnel.
（発明が解決しようとする課題） 従来のこの種の工法は、前記したように泥漿材を使用す
るため、次のような問題点があった。(Problems to be Solved by the Invention) Since the conventional construction method of this type uses the slurry material as described above, it has the following problems.
即ち、 a) ベントナイトを混入した泥漿材を使用する場合に
は、公害の問題が発生するため、産業廃棄物として残土
処理する必要があり、一般の処分地で処理できず、遠隔
地の産業廃棄物処理場へ運搬して処分するか、または仮
置場へ掘削土砂を運搬し、そこで天日乾燥した後、一般
の良質土と混合して一般残土として処理する必要があ
り、そのため広大な面積の仮置場を確保しなければなら
ない。In other words, a) When using a sludge material mixed with bentonite, there is a problem of pollution, so it is necessary to treat the remaining soil as industrial waste, and it is not possible to treat it at general disposal sites. It is necessary to transport it to a landfill and dispose of it, or to transport the excavated soil to a temporary storage site, where it is dried in the sun, and then mix it with general good soil to treat it as general residual soil. A temporary storage area must be secured.
b) またベントナイトを混入した泥漿材を使用する場合
には、ベントナイト、粉末粘土とも大量に使用するた
め、大規模なプラント設備と広いストツクヤードが必要
である。b) In addition, when using sludge mixed with bentonite, large amounts of bentonite and powdered clay are used, so large-scale plant equipment and a wide stockyard are required.
c) 更にＣＭＣを混入した泥漿材を使用する場合には、
ＣＭＣがイオン性で塩に弱いこと、耐酸素性が弱いた
め、腐敗し易いこと、界面活性が低いため潤滑効果が低
いこと等の理由から泥漿材としての性状が変り易く、安
定した施工管理が困難となる。c) When using a slurry material further mixed with CMC,
Since CMC is ionic and weak against salt, it is easy to rot because it is weak in oxygen resistance, and the lubricating effect is low due to its low surface activity. Becomes
本発明は前記従来技術の有する問題点に鑑みて提案され
たもので、その目的とする処は、公害を招来することが
なく、而も安定した施工管理が行なわれるシールド工法
及び同工法に使用される泥漿材を提供する点にある。The present invention has been proposed in view of the above problems of the prior art, and the purpose thereof is to use the shield construction method and the construction method, which does not cause pollution and allows stable construction management. The point is to provide the sludge material.
（課題を解決するための手段） 前記の目的を達成するため本発明においては、水と非イ
オン性のセルロースエーテルを主成分とした粘稠材と粉
末粘土とを配合して泥漿材を構成したものであり、更に
同泥漿材をシールド掘削機の前面切羽側に注入する泥漿
シールド工法を提供するものである。(Means for Solving the Problem) In order to achieve the above-mentioned object, in the present invention, a slurry material is formed by mixing water and a viscous material mainly composed of nonionic cellulose ether and powdered clay. The present invention further provides a sludge shield construction method of injecting the sludge material into the front face of a shield excavator.
（作用） 本発明によれば前記したように、水と非イオン性のセル
ロースエーテルを主成分とした粘稠材と、粉末粘土とを
配合して無公害の泥漿材を調整し、同泥漿材をシールド
掘削機の前面切羽側に注入することによって切羽の安定
を図るとともに、無公害の泥漿材を使用することによ
り、掘削残土を一般の処分地で処分できる。(Operation) According to the present invention, as described above, a viscous material containing water and a nonionic cellulose ether as a main component and powder clay are blended to prepare a pollution-free sludge material. Is injected into the front face of the shield excavator to stabilize the face, and by using pollution-free sludge material, the excavated soil can be disposed of at general disposal sites.
また前記泥漿材の水、非イオン性のセルロースエーテル
及び粉末粘土の配合量を変えることによって、切羽の性
状に対応して泥漿材の粘性、比重を調整するものであ
る。Further, the viscosity and specific gravity of the slurry material are adjusted according to the characteristics of the face by changing the blending amounts of water, nonionic cellulose ether and powdered clay of the slurry material.
（実施例） 以下本発明を実施例について説明する。(Example) Hereinafter, the present invention will be described with reference to Examples.
地上における小規模の泥漿材作泥プラント(1)において
水と非イオン性のセルロースエーテルを主成分とした粘
稠材と粉末粘土とを配合して泥漿材を調整する。In a small-scale sludge production mud plant (1) on the ground, water, a viscous material containing nonionic cellulose ether as a main component, and powdered clay are mixed to prepare a slurry material.
次に同泥漿材の配合例を挙げる。Next, an example of compounding the same slurry material is given.
なお前記した（水＋ベントナイト＋粉末粘土）を混練し
た泥漿材、及び（水＋ＣＭＣ＋粉末粘土）を混練した泥
漿材の配合例をも対照例として挙げる。In addition, a compounding example of the slurry material obtained by kneading (water + bentonite + powder clay) and the slurry material obtained by kneading (water + CMC + powder clay) is also given as a control example.
前記作泥プラント(1)より配管(2)を介して、シールド掘
削機(3)によって掘進された坑内に配置された泥漿材注
入用ポンプ(4)に泥漿材を供送し、同ポンプ(4)によって
注入管(5)を介してシールド掘削機(3)の前面切羽(6)側
に注入し、切羽の安定を図りながら掘進する。 From the mud production plant (1) through the pipe (2), the sludge material is fed to the sludge material injection pump (4) arranged in the mine that has been advanced by the shield excavator (3), and the pump ( It is injected into the front facet (6) of the shield excavator (3) through the injection pipe (5) by 4), and the excavation proceeds while stabilizing the facet.
掘削土砂(7)は▲ずり▼出しスクリユウコンベヤ(8)及び
排土用ベルトコンベヤ(9)を経て坑内に配設された▲ず
り▼運搬車(10)に積み込み、バツテリー式機関車(11)に
よって発進立坑(12)に搬送し、地上のクレン(13)によっ
て土砂ホッパ(14)に投入し、そこからダンプトラツク(1
5)で搬出し、一般残土として処分する。The excavated earth and sand (7) is loaded into a ▲ slide ▼ car (10) installed in the mine through the ▲ slide ▼ screw conveyor (8) and the soil discharging belt conveyor (9), and the buttery locomotive (11) )) To the start shaft (12), and the ground crane (13) puts it into the earth and sand hopper (14).
It is taken out at 5) and disposed of as general residual soil.
図中(16)はセグメント、(17)はカツター、(18)は推進ジ
ヤツキである。In the figure, (16) is a segment, (17) is a cutter, and (18) is a propulsion jack.
（発明の効果） 本発明に係るシールド工法においては前記したように、
水と非イオン性のセルロースエーテルを主成分とした粘
稠材と粉末粘土とを配合して無公害の泥漿材を調整し、
同泥漿材をシールド掘削機の前面切羽側に注入すること
によって、切羽の安定を図りながらトンネル穴を掘進す
るものであり、無公害の泥漿材を使用するために残土処
分が産業廃棄物扱いにならず、一般の処分地で処分でき
るので、従来のように広大な面積の仮置場を確保する必
要がなく、残土処分の大幅なコストダウンが図られる。(Effect of the invention) In the shield construction method according to the present invention, as described above,
To prepare a pollution-free slurry material by mixing water and a viscous material mainly composed of nonionic cellulose ether and powdered clay,
By injecting the sludge material into the front face of the shield excavator, the tunnel hole is dug while stabilizing the face, and since the pollution-free sludge material is used, the residual soil disposal is treated as industrial waste. However, since it can be disposed of at a general disposal site, there is no need to secure a temporary storage area with a vast area as in the past, and the cost of disposal of residual soil can be significantly reduced.
また切羽の安定を図るために、前記泥漿材は切羽土質の
粒度分布等に対応してその粘性、比重及び注入量を調整
したものを使用する必要があるが、同泥漿材の粘性及び
比重は、水、非イオン性のセルロースエーテルの配合量
を変えるだけで、容易に調整できる。Further, in order to stabilize the cutting face, it is necessary to use the sludge material whose viscosity, specific gravity and injection amount are adjusted according to the particle size distribution of the cutting soil, etc. It can be easily adjusted by changing the blending amounts of water, nonionic cellulose ether and water.
また泥漿材に使用するセルロースエーテルの１m3当りの
使用量が少ないため、プラント設備やストツクヤードが
小規模で済む。Also, since the amount of cellulose ether used for sludge material is small per 1 m 3 , plant equipment and stockyards can be small.
第１図は本発明に係るシールド工法の一実施例の実施状
況を示す縦断側面図である。 (1)……泥漿材作泥プラント、(2)……配管、 (3)……シールド掘削機、(4)……泥漿材注入用ポンプ、 (5)……注入管、(6)……切羽。FIG. 1 is a vertical sectional side view showing an implementation state of an embodiment of a shield construction method according to the present invention. (1) …… Sludge material production mud plant, (2) …… Piping, (3) …… Shield excavator, (4) …… Slurry material injection pump, (5) …… Injection pipe, (6)… ... face.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大倉 吉雅 東京都渋谷区千駄ケ谷４丁目６番15号 フ ジタ工業株式会社内 (72)発明者 野間 達也 東京都渋谷区千駄ケ谷４丁目６番15号 フ ジタ工業株式会社内 (72)発明者 村山 秀幸 東京都渋谷区千駄ケ谷４丁目６番15号 フ ジタ工業株式会社内 (56)参考文献 特開 平１−203591（ＪＰ，Ａ) 特開 昭61−91280（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshimasa Okura 4-6-15 Sendagaya, Shibuya-ku, Tokyo Within Fujita Industry Co., Ltd. (72) Inventor Tatsuya Noma 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Industry Co., Ltd. (72) Inventor Hideyuki Murayama 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Industry Co., Ltd. (56) Reference JP-A-1-203591 (JP, A) JP-A-61 -91280 (JP, A)
Claims (2)
成分とした粘稠材と粉末粘土とを配合してなる泥漿材
を、シールド掘削機の前面切羽側に注入することを特徴
とするシールド工法。1. A shield characterized by injecting a sludge material prepared by mixing a viscous material containing water and a nonionic cellulose ether as a main component and a powdered clay into the front face of a shield excavator. Construction method.
成分とした粘稠材と粉末粘土とを配合してなるシールド
工法用泥漿材。2. A slurry material for a shield construction method, which comprises water and a viscous material mainly composed of nonionic cellulose ether and powdered clay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63065790A JPH0635796B2 (en) | 1988-03-22 | 1988-03-22 | Shield method and slurry material for the same method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63065790A JPH0635796B2 (en) | 1988-03-22 | 1988-03-22 | Shield method and slurry material for the same method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01239293A JPH01239293A (en) | 1989-09-25 |
| JPH0635796B2 true JPH0635796B2 (en) | 1994-05-11 |
Family
ID=13297175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63065790A Expired - Lifetime JPH0635796B2 (en) | 1988-03-22 | 1988-03-22 | Shield method and slurry material for the same method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635796B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747734B2 (en) * | 1990-08-22 | 1995-05-24 | 三洋化成工業株式会社 | Solidifying agent for hydrous soil |
| FR2728298A1 (en) * | 1994-12-16 | 1996-06-21 | Condat Sa | PRODUCT AND METHOD FOR LUBRICATING THE METAL SURFACES OF AN EARTH PRESSURE TUNNEL |
| EP0846747A1 (en) * | 1996-12-09 | 1998-06-10 | Wolff Walsrode Ag | Process for preparation and use of gels as additives for mechanical shield driving |
| CN109184708B (en) * | 2018-10-18 | 2022-08-26 | 上海隧道工程有限公司 | Acid decomposition method for treating mud cake formed on shield cutter head |
| CN109356596B (en) * | 2018-10-30 | 2020-05-12 | 中建交通建设集团有限公司 | Method for launching and receiving shield tunneling machine by utilizing recyclable underground continuous wall and steel sleeve |
| CN115492607B (en) * | 2022-09-15 | 2024-11-15 | 中铁广州工程局集团城轨工程有限公司 | High-consistency grouting material pressure injection antifriction device and working method thereof |
| CN119430824B (en) * | 2024-11-07 | 2026-01-06 | 江苏三合建环保技术研究院有限公司 | An Ecological Grouting Material and Production Process for Shield Tunneling Excavated Soil Based on Geological Adaptability |
-
1988
- 1988-03-22 JP JP63065790A patent/JPH0635796B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01239293A (en) | 1989-09-25 |
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