JPS5820357B2 - Spring water seepage prevention device in excavation - Google Patents
Spring water seepage prevention device in excavationInfo
- Publication number
- JPS5820357B2 JPS5820357B2 JP8233377A JP8233377A JPS5820357B2 JP S5820357 B2 JPS5820357 B2 JP S5820357B2 JP 8233377 A JP8233377 A JP 8233377A JP 8233377 A JP8233377 A JP 8233377A JP S5820357 B2 JPS5820357 B2 JP S5820357B2
- Authority
- JP
- Japan
- Prior art keywords
- drill pipe
- excavation
- spring water
- pipe
- water
- 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
Landscapes
- Earth Drilling (AREA)
Description
【発明の詳細な説明】
この発明はコアリングあるいはノンコアリングにおいて
、口元ガイドパイプより圧力水を掘さく孔中に送り、ド
リルピント先端を介してドリルパイプより外部に導出す
る逆循環方式の掘さくにおける湧水浸出防止装置に関す
るものである。[Detailed Description of the Invention] This invention uses a reverse circulation method for coring or non-coring, in which pressurized water is sent into the drilled hole from the guide pipe at the mouth and led out from the drill pipe through the tip of the drill pin. This invention relates to a spring water seepage prevention device.
この種の掘さくでは、とくに水平掘さくにおいて、湧水
の浸出により、掘さく孔が崩壊される危険がある。In this type of drilling, especially in horizontal drilling, there is a risk that the hole will collapse due to seepage of spring water.
このため、掘さく中は勿論のこと、ドリルパイプの接続
中においても、掘さく孔内の水圧が所定値を維持し、湧
水浸出を防止しなければならない。For this reason, the water pressure within the borehole must be maintained at a predetermined value to prevent seepage of spring water, not only during excavation but also during connection of the drill pipe.
この発明は、掘さくにおける送水路に構造的改良を施し
て、ドリルパイプの接続の際でも掘さく孔内圧を所定値
に維持できるように改良した掘さくにおける湧水浸出防
止装置を提供しようとするものである。This invention aims to provide a device for preventing seepage of spring water in excavation, which is improved by structurally improving the water supply channel in excavation so that the internal pressure of the borehole can be maintained at a predetermined value even when connecting a drill pipe. It is something to do.
以下、この発明をコアリング式の逆循環水平掘さく装置
について図面を参照し、具体的に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings regarding a coring type reverse circulation horizontal drilling device.
図において符号１は試錐機で、こＸにはドリルパイプ３
が挿通してあり、適当な手段で掘さく孔内に送り込まれ
るようになっている。In the figure, numeral 1 is a drilling machine, and X is a drill pipe 3.
is inserted through it, and is adapted to be fed into the borehole by suitable means.
上記ドリルパイプ３は先端にドリルビット４が接続しで
ある。The drill pipe 3 has a drill bit 4 connected to its tip.
掘さく孔の口元には、口元ガイドパイプ１２が装備され
ており、該パイプ１２は口元ストップパルプ１３を介し
て分岐器１４に連通され、該分岐器１４にはプリペンタ
１１が連設される。A mouth guide pipe 12 is installed at the mouth of the borehole, and the pipe 12 communicates with a branch 14 via a mouth stop pulp 13, and a prepentor 11 is connected to the branch 14.
上記分岐器１４の水路１８はポンプ１９のデリベリに連
通されており、上記ポンプ１９のサクションはタンク２
０に連通されている。The water channel 18 of the branch 14 is connected to the delivery of the pump 19, and the suction of the pump 19 is connected to the tank 2.
It is connected to 0.
なお、ドリルパイプ８０基端にはウォータスイベル２１
が設げてあり、こ＼には水路２２を介して、圧力調選パ
ルプ２３が装備され、排水路２４に連通されている。In addition, a water swivel 21 is installed at the base end of the drill pipe 80.
is provided with a pressure-adjusted pulp 23 via a waterway 22 and communicated with a drainage channel 24.
このような構成ではポンプ１９を介して口元ガイドパイ
プ１２に送られた圧力水は、掘さく孔内１［満され、ス
ライムと共にドリルビット４を介してドリルパイプ３に
入り、こ＼を通過してクォータスイベル２１へと送られ
る。In such a configuration, the pressurized water sent to the mouth guide pipe 12 via the pump 19 fills the borehole 1 [with slime], enters the drill pipe 3 via the drill bit 4, and passes through this. and sent to Quarter Swivel 21.
こ５で圧力調整）（ルブ２３が働くので、掘さく孔内圧
は一定に維持される。(Pressure adjustment is done by this 5) (Since the lube 23 works, the internal pressure of the borehole is maintained constant.
、 この状態ではドリルパイプ２の交換はできない。, In this state, the drill pipe 2 cannot be replaced.
そこで先づプリペンター１５．１６を働かせ、先行ドリ
ルパイプ３と、押込みドリルパイプ８とのそれぞれの液
密を保持した状態で、押込みドリルパイプ８と先行ドリ
ルパイプ３を切り離し、この間隙においてゲートパルプ
１７を閉じるのであるしかして後プリペンタ１６を外せ
ば、押込みドリルパイプ８はフリーとなり、新たなドリ
ルパイプ（図示せず）をこ＼に導入できる。Therefore, first, the prepenters 15 and 16 are operated to separate the pushing drill pipe 8 and the pushing drill pipe 3 while maintaining the liquid tightness between the leading drill pipe 3 and the pushing drill pipe 8, and in this gap, the gate pulp 17 is separated. If the rear prepenter 16 is removed, the push-in drill pipe 8 becomes free, and a new drill pipe (not shown) can be introduced there.
この間、掘さく孔内の水圧は維持されるので、湧水の浸
出が防止される。During this time, the water pressure inside the borehole is maintained, preventing seepage of spring water.
新たなドリルパイプがプリペンタ１６内に入ると、再６
プリベンタ１６を閉じ、ゲートパルプ１７をあげ、上記
パイプを進めて、先行ドリルパイプ３に接続する。When a new drill pipe enters the prepenta 16, the 6
The preventer 16 is closed, the gate pulp 17 is raised, and the pipe is advanced and connected to the preceding drill pipe 3.
この過程では、圧力水は、先行ドリルパイプ３より、新
たなパイプ、押込みドリルパイプ８を経由して、ウォー
タスイベル２１に到達し、圧力調整パルプ２３の動作を
うながす。In this process, pressurized water reaches the water swivel 21 from the preceding drill pipe 3 via a new pipe, the push-in drill pipe 8, and prompts the operation of the pressure regulating pulp 23.
なお、この実施例ではコアリングの場合について述べた
が、ノンコアリングの場合も、この発明は適用できる。In this embodiment, the case of coring has been described, but the present invention can also be applied to the case of non-coring.
この発明は、以上詳述したように、口元ガイドパイプよ
り圧力水を掘さく孔中に送り、トリルビ。As described in detail above, this invention sends pressurized water into a drilled hole from a guide pipe at the mouth, and performs a trilby operation.
ソト先端を介してドリルパイプより外部に導出する逆循
環方式の掘さくにおいて、両側にプリペンタを備えたゲ
ートパルプを連設すると共に、ドリルパイプ側に圧力調
整パルプを連設したから、ドリルパイプの接続を行う場
合にも、掘さく孔中の内部水圧を所定値に維持でき、湧
水の浸出を防止し、壁面崩壊をさげることができ、特に
崩壊湧水層に於いては、ポーリング孔壁面崩壊を防ぐ効
果が太きい。When drilling with a reverse circulation method that leads out from the drill pipe through the tip of the drill, we installed gate pulp with prepent on both sides and pressure-adjusting pulp on the drill pipe side. Even when connecting, the internal water pressure in the borehole can be maintained at a predetermined value, preventing seepage of spring water and reducing wall collapse. It is highly effective in preventing collapse.
図はこの発明の一実施例を示す概略系統図である。
１・・・・・・試錐機、２・・・・・・ドリルパイプ、
３・・・・・・先行ドリルパイプ、４・・・・・・ドリ
ルビット、８・・・・・・押込みドリルパイプ、１１・
・・・・・プリペンタ、１２・・・・・・口元ガイドパ
イプ、１３・・・・・・口元ストップパルプ、１４・・
・・・・分岐器、１５．１６・・・・・・プリペンタ、
１７・・・・・・ゲートバルブ、１８・・・・・・水路
、１９・・・・・・ポンプ、２０・・・・・・タンク、
２１・・・・・・ウォータスイベル、２２・・・・・・
水路、２３・・・・・・圧力調整パルプ、２４・・・・
・・排水路。The figure is a schematic system diagram showing one embodiment of the present invention. 1...Testing machine, 2...Drill pipe,
3... Advance drill pipe, 4... Drill bit, 8... Push drill pipe, 11.
... Prepenta, 12 ... Mouth guide pipe, 13 ... Mouth stop pulp, 14 ...
... Turnout, 15.16... Prepenta,
17...Gate valve, 18...Waterway, 19...Pump, 20...Tank,
21...Water swivel, 22...
Water channel, 23... Pressure adjustment pulp, 24...
・Drainage channel.
Claims (1)
ドリルビット先端を介してドリルパイプより外部に導出
する逆循環方式の掘さくにおいて、。 ゲートパルプの両側にプリベンダーを備えたロッド着脱
装置を連設すると共に、ドリルパイプ後端部に圧力調整
パルプを連設したことを特徴とする、掘さくにおける湧
水浸出防止装置。[Claims] 1. Sending pressurized water into the drilled hole from the mouth guide pipe,
In drilling using the reverse circulation method, which leads to the outside from the drill pipe through the tip of the drill bit. A device for preventing seepage of spring water in excavation, characterized in that a rod attaching/detaching device equipped with a pre-bender is provided on both sides of a gate pulp, and a pressure adjusting pulp is provided in a row at the rear end of a drill pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8233377A JPS5820357B2 (en) | 1977-07-09 | 1977-07-09 | Spring water seepage prevention device in excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8233377A JPS5820357B2 (en) | 1977-07-09 | 1977-07-09 | Spring water seepage prevention device in excavation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5417303A JPS5417303A (en) | 1979-02-08 |
| JPS5820357B2 true JPS5820357B2 (en) | 1983-04-22 |
Family
ID=13771623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8233377A Expired JPS5820357B2 (en) | 1977-07-09 | 1977-07-09 | Spring water seepage prevention device in excavation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5820357B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6664967B2 (en) * | 2016-01-19 | 2020-03-13 | 鹿島建設株式会社 | Groundwater pressure measurement method and drilling rod in ground drilling |
-
1977
- 1977-07-09 JP JP8233377A patent/JPS5820357B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5417303A (en) | 1979-02-08 |
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