JPH0161128B2 - - Google Patents
Info
- Publication number
- JPH0161128B2 JPH0161128B2 JP23434683A JP23434683A JPH0161128B2 JP H0161128 B2 JPH0161128 B2 JP H0161128B2 JP 23434683 A JP23434683 A JP 23434683A JP 23434683 A JP23434683 A JP 23434683A JP H0161128 B2 JPH0161128 B2 JP H0161128B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- injection
- chemical
- drug solution
- ground
- 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 69
- 239000007924 injection Substances 0.000 claims description 69
- 239000000126 substance Substances 0.000 claims description 64
- 239000000243 solution Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 28
- 239000003814 drug Substances 0.000 claims description 27
- 229940079593 drug Drugs 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000009412 basement excavation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000008155 medical solution Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
【発明の詳細な説明】
本発明は軟弱地盤を強化するために薬液を注入
する工法に用いる土木用薬液注入装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chemical injection device for civil engineering used in a method of injecting chemical liquid to strengthen soft ground.
トンネルやビル建設工事などの土木工事におい
ては、地盤が軟弱な場合、落盤や地盤沈下などの
事故が起らないようにすると共に掘削作業を容易
にするため、作業を始める前に地盤中に時後的に
硬化する性質の薬液を注入し、該地盤を硬化させ
てから掘削作業を行なうのが通常であり、この薬
液を注入する作業は、従来、薬液を注入すべき地
盤の適宜数箇所をボーリングしてケーシングパイ
プを挿入し、該ケーシングパイプに薬液注入管を
挿入すると共にケーシングパイプと薬液注入管の
端部の空隙をシールした後、薬液圧入機をセツト
し、該圧入機により前記薬液注入管にセメントミ
ルク、水硝子等の薬液を圧送して該薬液を注入管
の先端から地盤中に注入し硬化させることによ
り、地盤を硬化し強化させていたが、最近では、
前記薬剤に主剤と硬化剤を混合して用いるもの等
複数の成分により成るものが多用されるようにな
つた。 In civil engineering works such as tunnels and building construction, when the ground is soft, it is necessary to pour water into the ground before starting work to prevent accidents such as landslides and ground subsidence, and to make excavation work easier. It is common practice to inject a chemical solution that hardens later and harden the ground before excavation work is carried out. After boring and inserting the casing pipe, inserting the chemical liquid injection pipe into the casing pipe and sealing the gap between the ends of the casing pipe and the chemical liquid injection pipe, a chemical liquid injection machine is set, and the chemical liquid injection is performed by the press-fitting machine. The ground was hardened and strengthened by force-feeding chemical liquids such as cement milk and water glass through a pipe and injecting the chemical liquid into the ground from the tip of the injection pipe and hardening it, but recently,
Drugs made of multiple components, such as those in which a base agent and a hardening agent are mixed with the above-mentioned chemicals, have come into widespread use.
而して、上記複数成分の薬液の注入作業におい
て使用する薬液注入管としては、従来、鋼管、合
成樹脂管等を接合し、内部に複数の流路を形成す
るとともに先端には当該成分の混合装置を配設し
たものを用いているが、いずれも前記接合部から
薬液が洩れたり、ボーリング後にそれを挿入する
時、ボーリング孔の中に突起があると該突起に引
掛かつたり、薬液注入管の接合部が前記突起に挟
まつて動かなくなつたりして、作業に時間がかか
り、能率的に作業を行なうことは困難であつた
し、又、薬液注入後にボーリング孔から抜去する
のが極めて困難でそのまま地中に放置せざるを得
ないため、硬化後に行なう掘削作業の際に金属等
が掘削具にからまつたりして作業能率を低下させ
ていた。 Conventionally, chemical liquid injection tubes used in the above-mentioned injection work of multi-component chemical liquids have been made by joining together steel pipes, synthetic resin pipes, etc., forming a plurality of channels inside, and having a tip for mixing the components. However, in both cases, the chemical solution may leak from the joint, or if there is a protrusion in the borehole when inserting it after boring, it may get caught on the protrusion, or the chemical solution injection pipe may become damaged. The joint part of the chemical may get stuck in the protrusion and become stuck, making the work time-consuming and difficult to work efficiently. Also, it is extremely difficult to remove the chemical from the borehole after injecting the chemical. Therefore, when excavation work is carried out after hardening, metal etc. become entangled in the excavation tool, reducing work efficiency.
又、作業内容に関しても、前記薬液注入管を使
用して一度に薬液を注入すると、先端からのみ薬
液が注入されるので、地盤内で注入される薬液の
ムラが生じてしまうし、ボーリング孔の最深部か
ら順に薬液を注入した場合でも、平均的に注入で
きるだけで、当該地盤の硬い部分には少量の薬
剤、軟い部分には大量の薬剤というように、地盤
の状態に合せた注入ができないという難点が指摘
されていた。 Also, regarding the work details, if the chemical solution is injected at once using the chemical injection tube, the chemical solution will be injected only from the tip, which will cause unevenness of the chemical solution injected in the ground, and Even if the chemical solution is injected sequentially from the deepest part, it is possible to inject only an average amount, but it is not possible to inject a small amount of the chemical into the hard part of the ground, and a large amount into the soft part, depending on the ground condition. This difficulty was pointed out.
本発明は上記のような従来技術の難点を解決す
ることの出来る薬液注入装置を提供することを目
的としてなされたもので、その構成は、適宜長さ
及び径でその内部に複数の流体流路を設けると共
に一端を閉塞することにより形成した薬液注入チ
ユーブと、先端側を該薬液注入チユーブの内径に
見合う凸出部に形成した主薬液注入兼案内管と、
細管等により形成した適宜数の副薬液注入管とか
ら成り、前記薬液注入チユーブを長さ方向で折畳
状態として前記主薬液注入兼案内管に被嵌する一
方、薬液注入チユーブ内の流体流路に前記副薬液
注入管を接続したことを特徴とするものである。 The present invention has been made for the purpose of providing a chemical liquid injection device capable of solving the above-mentioned difficulties of the prior art. A drug solution injection tube formed by providing a drug solution injection tube and closing one end, and a main drug solution injection/guide tube whose tip side is formed into a convex portion corresponding to the inner diameter of the drug solution injection tube.
It consists of an appropriate number of secondary chemical injection tubes formed of thin tubes, etc., and the chemical liquid injection tube is folded in the length direction and is fitted into the main chemical liquid injection and guide tube, while the fluid flow path in the chemical liquid injection tube is The auxiliary drug solution injection tube is connected to the auxiliary drug solution injection tube.
次に本発明の実施の一例を図に拠り説明する。 Next, an example of implementation of the present invention will be explained with reference to the drawings.
Ｇは薬液を注入すべき地盤、Ｂは該地盤Ｇに設
けたボーリング孔で、該ボーリング孔Ｂにはケー
シングパイプＣが挿入してある。 G is the ground into which the chemical solution is to be injected, B is a borehole provided in the ground G, and a casing pipe C is inserted into the borehole B.
１は前記ボーリング孔Ｂに対応する径及び長さ
で薄手のプラスチツク等の軟質素材により製した
チユーブ２内に、径のみ異なる同様のチユーブ３
を挿通して二重管構造とすることにより、その内
部に主流路４と副流路５とを形成した薬液注入チ
ユーブで、該薬液注入チユーブ１は一端を開放し
たままにすると共に他端をシール６して閉塞して
ある。７は適宜径の管８の先端に前記薬液注入チ
ユーブ１の内径と略同一径のフランジ状ヘツド９
を設けると共に管８とフランジ状ヘツド９との間
にかけてフイン１０を形成した主薬液注入兼案内
管、１１は該主薬液注入兼案内管７の管８後端側
に配設した小径の管による副薬液注入管で、前記
薬液注入チユーブ１はその長さ方向で概ね蛇腹状
に折畳んだ状態にして前記主薬液注入兼案内管７
にフランジ９側から被嵌し、更に内側のチユーブ
３を直接管８に定着１２すると共に外側のチユー
ブ２を管８及び副薬液注入管１１に対して定着１
３することにより、主流路４は主薬液注入兼案内
管７に、副流路５は副薬液注入管１１にそれぞれ
連通させて取付けてあり、以上１乃至１３により
本発明装置の一例を構成する。 Reference numeral 1 denotes a tube 2 having a diameter and length corresponding to the bore hole B and made of a soft material such as thin plastic, and a similar tube 3 having a different diameter only.
The drug solution injection tube 1 has one end open and the other end left open. It is closed with a seal 6. Reference numeral 7 indicates a flange-shaped head 9 having approximately the same diameter as the inner diameter of the drug solution injection tube 1 at the tip of a tube 8 having an appropriate diameter.
11 is a small diameter tube disposed at the rear end side of the main chemical injection/guide tube 7. In the sub-medicine injection tube, the drug solution injection tube 1 is folded into a generally bellows shape in its length direction, and the main drug solution injection/guide tube 7
from the flange 9 side, and fix the inner tube 3 directly to the tube 8 (12), and fix the outer tube 2 to the tube 8 and the auxiliary liquid injection tube 11 (12).
3, the main flow path 4 is connected to the main liquid injection/guide pipe 7, and the sub-flow path 5 is connected to the sub-chemical injection pipe 11.The above 1 to 13 constitute an example of the device of the present invention. .
尚、上記実施例に於いては、薬液注入チユーブ
１を通常のストレートチユーブで形成し、これを
概ね折畳んだ状態として使用したが、あらかじめ
蛇腹状の折曲加工をしておいたチユーブを圧縮し
て使用してもよいし、又、主薬液注入兼案内管７
に設けたフランジ状のヘツド９の部分は、これを
同様の径の膨出部としてもよい。 In the above embodiment, the drug solution injection tube 1 was formed from a normal straight tube and was used in a generally folded state. It may also be used as a main chemical injection and guide tube 7.
The flange-shaped portion of the head 9 provided in the flange may be a bulge having a similar diameter.
上記のように構成される本発明の一例の装置
は、図示したように内面に適宜緩衝用の突起Ｔを
形成したケーシングパイプＣ内に挿入し、パツカ
ーＰによりケーシングパイプＣとの間に形成され
る空隙をシールしてボーリング孔Ｂにセツトし、
例えば二種類の薬液圧入機（図示せず）によりま
ず主剤を主薬液注入兼案内管７に圧入すれば、主
薬液注入兼案内管７内に圧入された薬液は該主薬
液注入兼案内管７内を通りその先端から圧出され
るが、主薬液注入兼案内管７の先端部分はフラン
ジ状のヘツド９により略水密構造となつているの
で、薬液注入チユーブ１は注入される薬液の圧力
により押圧され、該ヘツド９とフイン１０の作用
を受けてその折畳まれた部分を順次伸長しつつそ
の中に薬液を受入れ乍ら前進することになる。 The device of the present invention configured as described above is inserted into a casing pipe C having appropriate cushioning protrusions T formed on its inner surface as shown in the figure, and is inserted into a casing pipe C formed between it and the casing pipe C by a packer P. Seal the gap and set it in borehole B.
For example, if the base drug is first press-fitted into the base chemical injection/guide tube 7 using two types of chemical liquid injection machines (not shown), the chemical liquid press-fitted into the base chemical injection/guide tube 7 will be transferred to the base chemical injection/guide tube 7. However, since the tip of the main chemical injection/guide tube 7 has a nearly watertight structure with a flange-shaped head 9, the chemical injection tube 1 is pressed by the pressure of the injected chemical. Under the action of the head 9 and fins 10, the folded portion is successively extended and moves forward while receiving the medical solution therein.
而して、薬液注入チユーブ１先端のシール６部
がボーリング孔Ｂの先端に達したり、薬液注入チ
ユーブ１が完全に伸長し終つて、チユーブ１内の
圧力が高まると、該チユーブ１が円周方向に膨脹
し、チユーブ１内の圧力が或圧力値を超えると、
シール６部等が破れたり、また、ボーリング孔Ｂ
の中間部分にクラツクや軟弱地盤があると、この
クラツクや軟弱地盤部分に対応するチユーブ３が
同２と共に破れたりして薬液が洩出しチユーブ３
内の圧力が低下するので、ここで副薬液注入部１
１から硬化剤を圧入すれば、薬液注入チユーブ１
の破れた部分で両薬剤が混合され、薬液注入チユ
ーブ１の先端部分や該クラツク、軟弱地盤部分に
於いて薬液の注入が行なわれることになるのであ
る。 When the seal 6 at the tip of the chemical liquid injection tube 1 reaches the tip of the borehole B, or when the chemical liquid injection tube 1 is completely extended and the pressure inside the tube 1 increases, the tube 1 becomes circumferential. When the pressure inside the tube 1 exceeds a certain pressure value,
Seal 6 etc. may be torn, or the borehole B may be damaged.
If there is a crack or soft ground in the middle part of the tube 3, the tube 3 corresponding to the crack or soft ground may be torn together with the tube 2, and the chemical solution will leak out from the tube 3.
As the pressure inside decreases, the sub-medicine injection part 1 is
If the curing agent is press-fitted from 1, chemical injection tube 1
Both chemicals are mixed at the torn part, and the chemicals are injected into the tip of the chemical injection tube 1, the crack, and the soft ground.
尚、上記の薬液注入作業において、ケーシング
パイプＣの内面に適宜形成した緩衝用の突起Ｔは
薬液注入チユーブ１の伸長時に、該チユーブ１が
ケーシングパイプＣの内壁と主薬液注入兼案内管
７のヘツド９及びフイン１０に当つて損傷するの
を防止するのに役立つものである。 In the above chemical injection operation, the buffer protrusion T appropriately formed on the inner surface of the casing pipe C allows the tube 1 to contact the inner wall of the casing pipe C and the main chemical injection/guide tube 7 when the chemical injection tube 1 is extended. This helps to prevent damage to the head 9 and fins 10.
又、上記実施例においては、本発明装置をボー
リング孔Ｂに挿入したケーシングパイプＣに嵌挿
する場合について述べたが、本発明はこれに限ら
れるものではなく、直接ボーリング孔Ｂに挿入す
るようにしてもよく、更に主剤と硬化剤とを同時
に圧入したり、両薬剤の圧入時の圧力を加減して
地盤Ｇに注入される際の量比をコントロールする
ようにしてもよい。 Furthermore, in the above embodiment, a case has been described in which the device of the present invention is inserted into the casing pipe C inserted into the borehole B, but the present invention is not limited to this, and the device may be inserted directly into the borehole B. Furthermore, the main agent and hardening agent may be press-injected at the same time, or the pressure at the time of press-in of both agents may be adjusted to control the ratio of amounts injected into the ground G.
而して、本発明装置は叙上のようにして複数の
流体流路を形成した薬液注入チユーブをボーリン
グ孔に挿入し自走させ、該薬液注入チユーブに薬
剤を圧入して地盤に薬剤を注入するものであるか
ら、従来の注入管のようにボーリング孔内で引掛
かつたりすることなく、ボーリング孔全体に対
し、主剤と硬化剤より成る薬剤であつても極めて
能率的に注入することができる。 The device of the present invention inserts a chemical liquid injection tube with a plurality of fluid flow paths into a borehole as described above and allows it to run by itself, pressurizes the chemical liquid into the chemical liquid injection tube, and injects the chemical into the ground. Because of this, it can be extremely efficiently injected into the entire borehole, even when the agent consists of a base agent and a hardening agent, without getting caught in the borehole like with conventional injection pipes. .
又、薬液注入チユーブはその内部で高まる圧力
により破れるようになつているから、地盤が均一
に硬い場合は薬液注入チユーブの先端が破れて二
種類の薬剤が混合し乍らボーリング孔内を上昇し
ていくし、地盤にクラツクや軟い部分があつた場
合は当該部分に対応する薬液注入チユーブが破れ
てクラツクや軟かい部分に注入されることになる
ので、地盤の状態に適合させて薬剤を注入するこ
とができるのである。 In addition, the chemical injection tube is designed to rupture due to the pressure that builds up inside, so if the ground is uniformly hard, the tip of the chemical injection tube will break and the two types of chemicals will mix and rise inside the borehole. However, if there is a crack or soft part in the ground, the chemical injection tube corresponding to that part will break and the medicine will be injected into the crack or soft part, so the medicine should be applied according to the ground condition. It can be injected.
更に、本発明に使用する薬液注入チユーブは、
薬剤の圧入を停止すればもとの状態に収縮するの
で、薬剤注入後は極めて容易にボーリング孔から
抜去することができるし、そのまま放置したとし
ても、薄手のプラスチツク等の軟質素材で製して
あるから、硬化後に行なう掘削作業の支障となる
ことも全くない。 Furthermore, the drug solution injection tube used in the present invention is
Once the press-in of the drug is stopped, it will contract back to its original state, so it can be removed from the borehole very easily after the drug has been injected. Because of this, there is no hindrance to the excavation work that will be carried out after hardening.
尚、上記実施例は薬液注入チユーブに二重管構
造のものを使用した場合について述べたが、本発
明の薬液注入チユーブはこれに限定されるもので
はなく、三重管構造或いはそれ以上の多重管構造
とし、これに対応させて副薬液注入管１１を増設
するようにしてもよいことは勿論である。 Although the above embodiment describes the case where a double-tube structure is used for the drug solution injection tube, the drug solution injection tube of the present invention is not limited to this, and may have a triple-tube structure or more. Of course, it is also possible to change the structure and add the auxiliary liquid injection pipe 11 in accordance with this structure.
本発明は以上の通りであるから、土木用の薬液
注入装置として優れており、産業上の利用性が極
めて高いものである。 As described above, the present invention is excellent as a chemical injection device for civil engineering, and has extremely high industrial applicability.
第１図は本発明の実施の一例を示す縦断側面
図、第２図は本発明に用いる薬液注入チユーブの
一例の側面図である。
１…薬液注入チユーブ、４…主流路、５…副流
路、６…シール、７…主薬液注入兼案内管、９…
フランジ状のヘツド、１０…フイン、１１…副薬
液注入管、Ｇ…地盤、Ｂ…ボーリング孔、Ｃ…ケ
ーシングパイプ。
FIG. 1 is a longitudinal sectional side view showing an example of an embodiment of the present invention, and FIG. 2 is a side view of an example of a chemical liquid injection tube used in the present invention. 1... Chemical liquid injection tube, 4... Main channel, 5... Sub-channel, 6... Seal, 7... Main chemical liquid injection and guide tube, 9...
Flange-shaped head, 10... Fin, 11... Sub-chemical injection pipe, G... Ground, B... Boring hole, C... Casing pipe.
Claims (1)
を設けると共に一端を閉塞することにより形成し
た薬液注入チユーブと、先端側を該薬液注入チユ
ーブの内径に見合う凸出部に形成した主薬液注入
兼案内管と、細管等により形成した適宜数の副薬
液注入管とから成り、前記薬液注入チユーブを長
さ方向で折畳状態として前記主薬液注入兼案内管
に被嵌する一方、薬液注入チユーブ内の流体流路
に前記副薬液注入管を接続したことを特徴とする
土木用薬液注入装置。1. A drug solution injection tube formed by providing a plurality of fluid flow paths inside the tube with an appropriate length and diameter and closing one end, and a main drug solution whose tip side is formed into a protrusion corresponding to the inner diameter of the drug solution injection tube. It consists of an injection/guide tube and an appropriate number of sub-medicinal solution injection tubes formed of thin tubes, etc., and the drug solution injection tube is folded in the length direction and fitted into the main drug solution injection/guide tube. A chemical liquid injection device for civil engineering, characterized in that the subchemical liquid injection pipe is connected to a fluid flow path in the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23434683A JPS60126422A (en) | 1983-12-14 | 1983-12-14 | Injecting device for chemical liquid for construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23434683A JPS60126422A (en) | 1983-12-14 | 1983-12-14 | Injecting device for chemical liquid for construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60126422A JPS60126422A (en) | 1985-07-05 |
| JPH0161128B2 true JPH0161128B2 (en) | 1989-12-27 |
Family
ID=16969552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23434683A Granted JPS60126422A (en) | 1983-12-14 | 1983-12-14 | Injecting device for chemical liquid for construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60126422A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH079159B2 (en) * | 1988-09-26 | 1995-02-01 | 東海ゴム工業株式会社 | Packer |
| KR100551204B1 (en) * | 2002-09-13 | 2006-02-10 | 국방과학연구소 | Precise internal machining apparatus of fiber reinforced composites sabots object |
| KR100691727B1 (en) | 2004-07-01 | 2007-03-12 | 홍지기술산업주식회사 | Cement Paste Injection Apparatus And A Method Of Reinforcement For Soft Ground Using The Same |
-
1983
- 1983-12-14 JP JP23434683A patent/JPS60126422A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60126422A (en) | 1985-07-05 |
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