JPS63210390A - Method of cut-off construction of deap-seated boring hole - Google Patents
Method of cut-off construction of deap-seated boring holeInfo
- Publication number
- JPS63210390A JPS63210390A JP4489987A JP4489987A JPS63210390A JP S63210390 A JPS63210390 A JP S63210390A JP 4489987 A JP4489987 A JP 4489987A JP 4489987 A JP4489987 A JP 4489987A JP S63210390 A JPS63210390 A JP S63210390A
- Authority
- JP
- Japan
- Prior art keywords
- water
- drilling rod
- injection
- drilling
- rod
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 22
- 238000010276 construction Methods 0.000 title description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 238000005553 drilling Methods 0.000 claims description 40
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- 239000000126 substance Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 description 8
- 239000002775 capsule Substances 0.000 description 5
- 239000011440 grout Substances 0.000 description 5
- 239000000499 gel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Drilling And Boring (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は地熱発電掘削１石油掘削、鉱物資源掘削並び
に各種資源探査掘削などの深層ボーリング孔掘削に於い
て、掘削用循環泥水が孔壁から逃げるのを防止する深層
ボーリング孔の止水工法に関する。[Detailed Description of the Invention] "Industrial Application Field" This invention is applicable to deep borehole drilling such as geothermal power generation drilling 1 oil drilling, mineral resource drilling, and various resource exploration drilling, in which circulating mud for drilling is removed from the hole wall. This article relates to a water stoppage method for deep boreholes that prevents water from escaping.
「従来の技術」
深層ボーリングの状態は第２図に示される如くで、図中
１はケーシング、２は当該ケーシングｌ内を貫通のドリ
ルロッドで、掘削用循環泥水は当該ドリルロッド２空芯
部を介して先端から孔底に注入されて孔３内に充満し、
地上のタンク４に回収されている。尚、図中矢印５は逸
水を示す。``Prior art'' The state of deep boring is as shown in Figure 2, in which 1 is a casing, 2 is a drill rod that penetrates the inside of the casing, and the circulating mud for drilling is passed through the hollow core of the drill rod 2. is injected from the tip to the bottom of the hole through the hole 3, filling the hole 3.
It is collected in tank 4 on the ground. Note that arrow 5 in the figure indicates lost water.
従来、の止水工法としては以下列記のものがある。Conventional water stoppage construction methods include the following.
ｉ）泥水濃度の調整による方法
この方法は泥水濃度を高くすることによって逸水Ｎ（亀
裂部）を封鎖する工法である。i) Method by adjusting the concentration of muddy water This method is a method of sealing off lost water N (crack) by increasing the concentration of muddy water.
ｉｉ）セメントグラウトによる方法
この方法はセメントグラウトのみの場合とセメントグラ
ウトに木屑やわらなどを混入したものを深層ボーリング
孔に流し込んで逸水防止をはかる工法である。ii) Method using cement grout This method involves pouring only cement grout or cement grout mixed with wood chips, straw, etc. into a deep borehole to prevent water loss.
ｉｉｉ ）ホースを介しての薬液注入による方法この方
法は水中でゲル化する止水用薬液を所定深度（逸水筒所
）まで降下させた注入水−スで注入する工法である。iii) Method of injecting a chemical solution through a hose This method is a construction method in which a water-stopping chemical solution that gels in water is injected using an injection water source that has been lowered to a predetermined depth (water leakage point).
ｉｖ）ロッドを介しての薬液注入による方法この方法は
水中でゲル化する上水用薬液を所定深度（逸水筒所）ま
で継ぎ足しながら降下させた注入ロッドで注入する工法
である。iv) Method of injecting chemical liquid through a rod This method is a construction method in which a chemical liquid for drinking water that gels in water is injected using an injection rod that is lowered while being replenished to a predetermined depth (Isui-tshojo).
■）カプセルを使った止水用薬液注入方法この方法はカ
プセルに所定のゲルタイムでセントした止水用薬液を所
定深度（逸水層）まで下し、カプセルを破裂させて止水
をする工法である。■) Method of injecting a water-stopping chemical using a capsule This method is a method in which a water-stopping chemical is poured into a capsule at a predetermined gel time to a predetermined depth (water loss layer), and the capsule ruptures to stop water. be.
「発明が解決しようとする問題点」
しかるに畝上の従来工法には以下列記の如き問題点があ
る。``Problems to be solved by the invention'' However, the conventional construction method on ridges has the following problems.
すなわち、上述の１）の工法にあっては、掘削ロッドを
存置したままでよいので有利であるが、泥土粒子はゲル
化物の如く大きくないので亀裂幅が大きい場合や逸水が
激しい場合は効果がない。In other words, method 1) above is advantageous because it allows the drilling rod to remain in place, but since the mud particles are not as large as gelled materials, it is not effective when the crack width is large or water loss is severe. There is no.
又、濃度が高くなり過ぎると逸水筒所以外の弱い孔壁を
崩壊させる欠点がある（壁内に浸透することなく孔壁表
面にのみ付着するため）。In addition, if the concentration becomes too high, it has the disadvantage of collapsing weak pore walls other than the water leakage tube (because it adheres only to the surface of the pore wall without penetrating into the wall).
ｉｉ）の工法にあってはｉ）と同じく掘削ロッドを存置
したままでよいので有利であるが、セメントの硬化時間
が長い（８〜１０時間）ため止水までに時間がかかり、
さらに、孔壁表面に付着して浸透しにくく、一連の掘削
システムが２〜３日から逸水が激しい場合は数十日停止
してしまう、又、循環泥水が無駄になる他セメントの量
も数十トンを使用する。又、セメントは浸透性が悪いた
め再掘削をすると孔壁を崩壊させる欠点がある。Method ii) is advantageous as it allows the drilling rod to remain in place as in i), but it takes a long time for the cement to harden (8 to 10 hours), so it takes time to stop the water.
In addition, it adheres to the hole wall surface and is difficult to penetrate, causing the drilling system to stop working for 2 to 3 days or even several tens of days if there is severe water loss.In addition, circulating mud water is wasted and the amount of cement is also reduced. Use tens of tons. Furthermore, since cement has poor permeability, re-excavation will cause the hole wall to collapse.
ｉｉｉ ）〜Ｖ）の工法にあっては、掘削ロッドを引き
上げなくてはならないため、掘削ロッドの引き上げ、降
下の時間（深度にもよるが５〜１０時間）がかかるとい
う共通の難点を有するが、掘削ロッドを引き上げない場
合は強度の高い薬液を使うと掘削ロッドが動かなくなる
ことがあり、この点で有利であるが、個々についてみる
と、ｉｉｉ ）の工法では注入ホースを降下するのがむ
ずかしく（ねじれがでる）深くなれば薬液のロス（ホー
ス内分）がでる。ｉｖ）の工法では注入ロッドを降下さ
せるのに時間がかかり、ロッドの耐力から７００ ｍ程
度が限度で薬液のロスが出る。さらに注入ロッド引き上
げ後に掘削ロッドを降下させるのも時間がかかる。■）
の工法では所定深度へ降下してカプセルを確実・安全に
破損することができないのと、所定量までの連続供給で
ない不便があり、大逸水に対拠できない。又、カプセル
の降下がスムーズにできない場合もある。Methods iii) to V) have the common drawback that it takes time to raise and lower the drilling rod (5 to 10 hours depending on the depth) because the drilling rod must be raised. If the drilling rod is not pulled up, using a strong chemical solution may prevent the drilling rod from moving, so it is advantageous in this respect, but looking at each method individually, it is difficult to lower the injection hose. (Twisting occurs) If it gets too deep, there will be a loss of chemical solution (inside the hose). In method iv), it takes time to lower the injection rod, and due to the rod's proof strength, it can only be done for a distance of about 700 m, resulting in a loss of chemical solution. Furthermore, it takes time to lower the drilling rod after raising the injection rod. ■)
This construction method has the inconvenience of not being able to descend to a predetermined depth and destroy the capsule reliably and safely, and not being able to continuously supply up to a predetermined amount, making it incapable of dealing with large water leaks. Furthermore, there are cases where the capsule cannot descend smoothly.
「問題点を解決するための手段」２ 「作用」本発明は
畝上の事情に濯みなされたもので、その要旨とするとこ
ろは、逸水が生じたところで一担掘削ロッドの泥水循環
を中断し、掘削ロッドを一担引き上げて先端のトリコン
ビットを取り外してから降下させ、かかる掘削ロッド内
に先端に注入兼用の噴射ノズルを付設した注入ホースを
挿入降下させ、当該注入ホースを介して止水用薬液を主
成分とするグラウトを逸水部に吐出し、止水後注入ホー
ス並びに掘削ロッドを引き上げ、掘削ロッドにトリコン
ビットを再装着して再掘削をとり行なうとして、掘削ロ
ッド−担引き上げ方式に於いて、掘削ロッドをガイドに
利用して確実、迅速に薬液注入がなし得る好適な新規工
法を提供した点にある。``Means for solving the problem'' 2 ``Operation'' The present invention was developed in consideration of the situation on ridges, and its gist is to improve the muddy water circulation of the drilling rod at the point where water loss occurs. Pause, pull up the drilling rod, remove the tricone bit at the tip, lower it, insert an injection hose with an injection nozzle at the tip into the drilling rod, lower it, and insert the injection hose through the injection hose. Grout, which is mainly composed of water chemicals, is discharged into the drain area, and after the water has stopped, the injection hose and drilling rod are pulled up, the tricone bit is reattached to the drilling rod, and the drilling rod is to be re-excavated. The present invention provides a suitable new construction method that uses a drilling rod as a guide to ensure and quickly inject a chemical solution.
「実施例」 以下これを図に基づいて詳細に説明する。"Example" This will be explained in detail below based on the figures.
第１図ａ −ｆは本発明工法の手順説明図である。Figures 1a to 1f are explanatory diagrams of the procedure of the construction method of the present invention.
逸水発生により泥水循環を一担中断し、掘削ロッド２を
引き上げる（ａ図）。Due to the occurrence of lost water, mud water circulation is temporarily interrupted and the drilling rod 2 is pulled up (Figure a).
掘削ロッド２より先端のトリコンビット２ａを取り外し
ロッド２先端を開口させて降下させる（ｂ争１メ
図）。実際には逸水筒所より５０中程上方に先端間 ・
口が位置するようにする。Remove the tricone bit 2a at the tip of the drilling rod 2, open the tip of the rod 2, and lower it (Fig. 1). In reality, it is located about 50 meters above the tip of the water pipe.
Make sure your mouth is in the correct position.
先端に注入兼用の噴射ノズル６ａを付設した注入ホース
６を掘削ロッド２の中に挿入・降下させる（０図）。注
入ホース６を介して止水用薬液を主成分とするグラウト
を逸水部に向けて吐出し、後行して泥水を送り止水する
（ｄ図）。An injection hose 6 having an injection nozzle 6a for injection at its tip is inserted into the excavation rod 2 and lowered (Fig. 0). Grout containing a water-stopping chemical as a main component is discharged through the injection hose 6 toward the water-loss area, and muddy water is sent behind to stop the water (Figure d).
尚、止水を補完するために後行して掘削ロッド２より泥
水のかわりにセメントミルクを送るとしても良い。Incidentally, in order to supplement water stoppage, cement milk may be sent later from the drilling rod 2 instead of muddy water.
止水後、注入ホース６、次いで掘削ロッド２を引き上げ
る（０図）。After the water stops, pull up the injection hose 6 and then the drilling rod 2 (Figure 0).
トリコンビット２ａを再装着して掘削ロッド２を降下さ
せ、再掘削を開始する（ｒ図）
しかして、掘削ロッドを一担引き上げるもそれは先端開
口のためにトリコンビットを取り外すためであり、設置
基盤の移動を併なうことなく掘削ロッドをガイドとして
降下させ、止水後の引き上げでも同様にトリコンビット
を再装着して降下させるものであるために、迅速に操作
し得、かつ最も確実に薬液の供給がなし得るものである
。The tricone bit 2a is reattached, the drilling rod 2 is lowered, and drilling begins again (Figure R) However, although the drilling rod is pulled up once, the purpose is to remove the tricone bit in order to open the tip, and the installation base The drilling rod is used as a guide to lower the rod without having to move the water, and the tricone bit is reattached and lowered in the same way when the water is cut off. supply is possible.
「発明の効果」 畝上木発明の効果を列挙するならば下記の如くである。"Effect of the invention" The effects of the ridged wood invention are listed below.
（１）掘削ロッドの中に注入ホースを挿入するためスム
ーズに降下できる。(1) Since the injection hose is inserted into the drilling rod, it can be lowered smoothly.
（２）注入ホースであるから管の継ぎ足す時間（ロスタ
イム）がない。(2) Since it is an injection hose, there is no time lost for adding pipes.
（３）逸水筒所に確実に注入・止水できる。(3) Water can be reliably injected and stopped at the water tank.
（４）逸水状況に応じてゲルタイムと注入量が調節でき
、薬液の無駄がない。(4) Gel time and injection amount can be adjusted according to the water loss situation, so there is no wastage of chemical solution.
（５）掘削ロッドの中に注入ホースが挿入されるため掘
削ロッドの内壁に薬液が付着することがない。(5) Since the injection hose is inserted into the drilling rod, the chemical solution does not adhere to the inner wall of the drilling rod.
（６）注入ホースから薬液を吐出しながら掘削ロッドか
ら泥水並びにセメントミルクを送入することができるた
め、上からのプレッシャーの役目をはたし、吐出薬液を
フィッシャーへ押し込む効果がある。(6) Since muddy water and cement milk can be sent from the drilling rod while discharging the chemical from the injection hose, it acts as a pressure from above and has the effect of pushing the discharged chemical into the fisher.
第１図ａ −ｆは本発明工法の手順説明図、第２図は逸
水状況説明図である。
１・・・ケーシング、 ２・・・ドリルロッド、 ２
ａ・・・トリコンビット、 ３・・・孔、 ４・・
・タンク、 ５・・・逸水、 ６・・・注入ポース、
６ａ・・・噴射ノズル。
ンチグ７θ
ａ、 ｂ、 ｃ。
ドーター３ｙ７” ２−−−メ°′り／νＯｗ
Ｆ’ ２ａ−−−％り）＞ど、／−３−−−ノＬ
４−７ン７ ５−Ｊ！メ（６−−−璃八序−ス ６ａ
−−−４＃ｆ／ズンレ７ゾ／４６Fig. 1 a - f are explanatory diagrams of the procedure of the construction method of the present invention, and Fig. 2 is an explanatory diagram of the water loss situation. 1...Casing, 2...Drill rod, 2
a...Tricon bit, 3...hole, 4...
・Tank, 5... Loss of water, 6... Injection port,
6a... Injection nozzle. 7θ a, b, c. Daughter 3y7” 2---Melee/νOw
F'2a---%ri)>do,/-3---noL
4-7n7 5-J! Me (6---Richijo-su 6a
---4#f/Zunre7zo/46
Claims (1)
し、掘削ロッドを一担引き上げて先端のトリコンビット
を取り外してから降下させ、かかる掘削ロッド内に先端
に注入兼用の噴射ノズルを付設した注入ホースを挿入降
下させ、当該注入ホースを介して止水用薬液を逸水部に
吐出し、止水後注入ホース並びに掘削ロッドを引き上げ
、掘削ロッドにトリコンビットを再装着して再掘削をと
り行なうとしてなることを特徴とする深層ボーリング孔
の止水工法。When water leakage occurred, the mud circulation of the drilling rod was interrupted, the drilling rod was lifted up, the tricone bit at the tip was removed, and then lowered, and an injection nozzle was attached to the tip of the drilling rod for both injection and injection purposes. Insert and lower the injection hose, discharge the water stop chemical solution to the water leakage area through the injection hose, and after stopping the water, pull up the injection hose and drilling rod, reinstall the tricone bit on the drilling rod, and start drilling again. A water stop method for deep boreholes that is characterized by the fact that it works as it is done.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4489987A JPS63210390A (en) | 1987-02-27 | 1987-02-27 | Method of cut-off construction of deap-seated boring hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4489987A JPS63210390A (en) | 1987-02-27 | 1987-02-27 | Method of cut-off construction of deap-seated boring hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63210390A true JPS63210390A (en) | 1988-09-01 |
| JPH0472033B2 JPH0472033B2 (en) | 1992-11-17 |
Family
ID=12704324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4489987A Granted JPS63210390A (en) | 1987-02-27 | 1987-02-27 | Method of cut-off construction of deap-seated boring hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63210390A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020245882A1 (en) * | 2019-06-03 | 2020-12-10 | 関東天然瓦斯開発株式会社 | Cement slurry supplying method, and borehole excavation method and cementing method using said supplying method |
-
1987
- 1987-02-27 JP JP4489987A patent/JPS63210390A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020245882A1 (en) * | 2019-06-03 | 2020-12-10 | 関東天然瓦斯開発株式会社 | Cement slurry supplying method, and borehole excavation method and cementing method using said supplying method |
| JPWO2020245882A1 (en) * | 2019-06-03 | 2020-12-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0472033B2 (en) | 1992-11-17 |
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