JPH0243873B2 - SHIIRUDOTONNERUYOSUIATSUKEISETSUCHIHOHO - Google Patents
SHIIRUDOTONNERUYOSUIATSUKEISETSUCHIHOHOInfo
- Publication number
- JPH0243873B2 JPH0243873B2 JP18984883A JP18984883A JPH0243873B2 JP H0243873 B2 JPH0243873 B2 JP H0243873B2 JP 18984883 A JP18984883 A JP 18984883A JP 18984883 A JP18984883 A JP 18984883A JP H0243873 B2 JPH0243873 B2 JP H0243873B2
- Authority
- JP
- Japan
- Prior art keywords
- water pressure
- drilling tool
- ground
- grout
- pressure gauge
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 238000005553 drilling Methods 0.000 claims description 31
- 239000011440 grout Substances 0.000 claims description 26
- 238000012856 packing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Measuring Fluid Pressure (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、シールド工法により掘進したトン
ネルにおけるグラウト材の裏側の地山の水圧を測
定するための水圧計を、トンネルの内側から容易
に設置する方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a method for easily installing a water pressure gauge from inside the tunnel to measure the water pressure of the ground behind the grout material in a tunnel excavated using the shield method. It's about how to do it.
シールドトンネルにおいては、グラウト材の裏
側地山の水圧が覆工用セグメントおよびその裏側
のグラウト材に作用する。そして前記水圧の大小
は、シールドトンネルの漏水防止策や二次覆工厚
さ決定等に影響を与えるので、予め前記グラウト
材の裏側地山の水圧を測定する必要がある。
In a shield tunnel, water pressure from the ground behind the grout material acts on the lining segment and the grout material on the back side. Since the magnitude of the water pressure affects measures to prevent leakage of the shield tunnel and determination of the thickness of the secondary lining, it is necessary to measure the water pressure of the ground behind the grout material in advance.
従来、グラウト材の裏側地山の水圧を測定する
場合は、ボーリング機械により地表面からグラウ
ト材の裏側地山に向かつて深い孔を穿設し、その
孔内の下部に水圧計を挿入して、前記地山の水圧
を測定している。 Conventionally, when measuring the water pressure in the ground behind the grout, a deep hole was drilled from the ground surface to the ground behind the grout using a boring machine, and a water pressure gauge was inserted at the bottom of the hole. , measuring the water pressure in the ground.
しかるに、前記従来の水圧測定方法の場合は、
大型で高価なボーリング機械を使用して深い孔を
穿設するので、工費が高くなると共に作業時間が
長くかかり、かつ穿孔予定位置の地表に障害物が
あるときはボーリング機械を設置できないので、
穿孔することができず、さらに水底地盤に設置さ
れるトンネルの場合も、ボーリング機械により穿
孔して水圧計を設置することは困難である。
However, in the case of the conventional water pressure measurement method,
Large and expensive boring machines are used to drill deep holes, which increases construction costs and takes a long time.Additionally, the boring machine cannot be installed if there are obstacles on the ground at the planned drilling location.
Even in the case of tunnels that cannot be drilled and are installed underwater, it is difficult to drill the holes with a boring machine and install a water pressure gauge.
この発明は、前述の問題を有利に解決できるシ
ールドトンネル用水圧計設置方法を提供すること
を目的とするものであつて、この発明の要旨とす
るところは、センターホールジヤツキ１を備えて
いる挿込治具２をトンネル内からセグメント３の
グラウト孔４に螺合連結し、前端に回転切削用カ
ツタ５を備えていると共に中間周壁に可動止水パ
ツキング６により閉塞された開口部７を備えてい
る穿孔具８を、センターホールジヤツキ１および
前記グラウト孔４に挿入し、次に穿孔具８をセン
ターホールジヤツキ１により押進しながら回転し
て、その穿孔具８によりグラウト材９を貫通して
地山１０まで穿孔すると共に、前記開口部７を地
山１０に位置させ、次に穿孔具８内に水圧計１１
１を挿入すると共に前記可動止水パツキング６を
押圧移動して開口部７を開放することを特徴とす
るシールドトンネル用水圧計設置方法にある。
The object of the present invention is to provide a method for installing a water pressure gauge for a shield tunnel that can advantageously solve the above-mentioned problems. The fitting jig 2 is screwed and connected to the grout hole 4 of the segment 3 from inside the tunnel, and has a rotary cutting cutter 5 at the front end and an opening 7 closed by a movable waterproof packing 6 on the intermediate peripheral wall. The drilling tool 8 is inserted into the center hole jack 1 and the grout hole 4, and then the drilling tool 8 is rotated while being pushed by the center hole jack 1, so that the drilling tool 8 penetrates the grout material 9. Then, the opening 7 is located in the ground 10, and then a water pressure gauge 11 is inserted into the drilling tool 8.
1 is inserted, and the movable water stop packing 6 is pressed and moved to open the opening 7.
次にこの発明を図示の例によつて詳細に説明す
る。
Next, the present invention will be explained in detail using illustrated examples.
第１図はこの発明において用いられる挿込治具
２を示すものであつて、セグメントにおけるグラ
ウト孔の雌ねじ部に螺合される雄ねじ筒１２に截
頭円錐部１３を介して一対のジヤツキ保持用アー
ム１４が一体に連設され、かつセンターホールジ
ヤツキ１は各アーム１４の間に嵌入されてビスに
より固定されている。 FIG. 1 shows an insertion jig 2 used in the present invention, in which a pair of jacks for retaining are inserted through a truncated conical part 13 into a male threaded cylinder 12 which is screwed into a female threaded part of a grout hole in a segment. The arms 14 are integrally arranged, and the center hole jack 1 is fitted between each arm 14 and fixed with screws.
第２図および第３図はこの発明において用いら
れる穿孔具８を示すものであつて、後端に回動操
作用ハンドル１５を取付けた後部軸１６の周囲
に、複数の環状係止溝１７が後部軸長手方向に間
隔をおいて設けられ、かつ後部軸１６の前端部に
は雄ねじ軸１８が一体に連設され、さらに前端に
回転切削用カツタ５を備えている中空の前部軸１
９の後端部に設けられた雌ねじ部に前記雄ねじ軸
１８が螺合連結されている。前部軸１９の中間部
の周壁に複数の開口部７が設けられ、かつ前部軸
１９内にその開口部７を塞ぐゴム製可動止水パツ
キング６が摺動可能に嵌合され、その可動止水パ
ツキング６の後部は前部軸１９内に設けられたス
トツパ２０に係合されている。 FIGS. 2 and 3 show a drilling tool 8 used in the present invention, in which a plurality of annular locking grooves 17 are formed around a rear shaft 16 to which a rotating handle 15 is attached at the rear end. A hollow front shaft 1 is provided at intervals in the longitudinal direction of the rear shaft, a male screw shaft 18 is integrally connected to the front end of the rear shaft 16, and a rotary cutting cutter 5 is provided at the front end.
The male threaded shaft 18 is threadedly connected to a female threaded portion provided at the rear end of the shaft 9 . A plurality of openings 7 are provided in the circumferential wall of the intermediate portion of the front shaft 19, and a rubber movable waterproof packing 6 that closes the openings 7 is slidably fitted into the front shaft 19, and its movable The rear part of the waterproof packing 6 is engaged with a stopper 20 provided in the front shaft 19.
第４図は水圧計保持具２１を示すものであつ
て、保持用管体２２の前端部に水圧計１１が固定
され、かつ水圧計１１に接続された測定ケーブル
２３は管体２２内を通つて外部に導き出されてい
る。 FIG. 4 shows the water pressure gauge holder 21, in which the water pressure gauge 11 is fixed to the front end of the holding tube 22, and the measurement cable 23 connected to the water pressure gauge 11 is passed through the tube 22. It is led outside.
第５図はセグメント３の裏側にモルタルからな
るグラウト材９を、グラウトした状態を示すもの
であつて、セグメント３における雌ねじ付き金属
製筒体により形成されたグラウト４孔に螺合セツ
トされている弾性材料製逆止弁２５が閉じられて
いる。 FIG. 5 shows a state in which a grout material 9 made of mortar is grouted on the back side of the segment 3, and is screwed into four grout holes formed by a female threaded metal cylinder in the segment 3. The elastic material check valve 25 is closed.
前記挿込治具２、穿孔具８および水圧計保持具
２１を使用して水圧計１１を地山１０に設置する
場合はまず第６図に示すように、セグメント３に
おけるグラウト孔４の内端側にゴム製１次止水リ
ング２６を螺合固定し、次いで挿込治具２の前端
の雄ねじ筒１２をグラウト孔４の内端部に螺合連
結する。 When installing the water pressure gauge 11 in the ground 10 using the insertion jig 2, the drilling tool 8, and the water pressure gauge holder 21, first insert the inner end of the grout hole 4 in the segment 3, as shown in FIG. A primary rubber water stop ring 26 is screwed and fixed to the side, and then the male threaded cylinder 12 at the front end of the insertion jig 2 is screwed and connected to the inner end of the grout hole 4.
次に第７図に示すように穿孔具８の軸部をセン
ターホールジヤツキ１、軸受２７およびグラウト
孔４に挿入し、かつ軸受２７の前面に係合される
スナツプリングまたはその他の係合部材２８を前
記環状係止溝１７に側方から嵌合係止する。 Next, as shown in FIG. 7, the shaft of the drilling tool 8 is inserted into the center hole jack 1, the bearing 27, and the grout hole 4, and a snap ring or other engaging member 28 is engaged with the front surface of the bearing 27. is fitted and locked into the annular locking groove 17 from the side.
次に第８図に示すように、前記穿孔具８をセン
ターホールジヤツキ１により押圧しらがら、ハン
ドル１５を手に把持して穿孔具８を手動回転する
ことにより、グラウト材９を貫通して地山１０に
達する孔を穿設すると共に穿孔具８の開口部７を
地山１０に位置させる。 Next, as shown in FIG. 8, while pressing the drilling tool 8 with the center hole jack 1, the handle 15 is held in the hand and the drilling tool 8 is rotated manually, thereby penetrating the grout material 9. A hole reaching the ground 10 is drilled and the opening 7 of the drilling tool 8 is positioned in the ground 10.
次に挿込治具２および穿孔具８における後部軸
１６を取外して第９図に示す状態にする。 Next, the insertion jig 2 and the rear shaft 16 of the punching tool 8 are removed to create the state shown in FIG. 9.
次に第１０図に示すように水圧計保持具２１を
穿孔具８における後部軸１６および前部軸１９内
に挿入し、その水圧計保持具２１の前端部により
可動止水パツキング６を前方に押圧移動して開口
部７を開放すると共に、プラグ２９をグラウト孔
４に螺合固定して、そのプラグ２９により前部軸
１９および水圧計保持具２１の後端部を支承す
る。 Next, as shown in FIG. 10, insert the water pressure gauge holder 21 into the rear shaft 16 and front shaft 19 of the drilling tool 8, and use the front end of the water pressure gauge holder 21 to move the movable water stop packing 6 forward. While pressing and moving to open the opening 7, the plug 29 is screwed and fixed into the grout hole 4, and the plug 29 supports the front shaft 19 and the rear end of the water pressure gauge holder 21.
このようにすると地山１０の水圧が開口部７を
通つて水圧計１１に作用するので、地山１０の水
圧を測定することができる。 In this way, the water pressure of the earth 10 acts on the water pressure gauge 11 through the opening 7, so that the water pressure of the earth 10 can be measured.
なお、穿孔具８により穿孔を行なう場合、セン
ターホールジヤツキ１の全ストローク近くまで穿
孔が行なわれたのち、センターホールジヤツキ１
を短縮し、次いで係合部材２８を後方の環状係止
溝１７に移設して再び穿孔を開始する。 In addition, when drilling with the drilling tool 8, after drilling has been performed to almost the full stroke of the center hole jack 1, the center hole jack 1
is shortened, and then the engaging member 28 is moved to the rear annular locking groove 17 and drilling is started again.
二次ライニングを施す際には、水圧計１１を撤
去すると、地山の水がトンネル内に侵入すること
になるので、これを防止するために、カツタ５お
よび可動止水パツキング６を備えている前部軸１
９と水圧計１１とを撤去しないで埋殺しにする。 When applying the secondary lining, if the water pressure gauge 11 is removed, water from the ground will enter the tunnel, so to prevent this, a cutter 5 and a movable water stop packing 6 are provided. Front axis 1
9 and the water pressure gauge 11 are buried without being removed.
この発明によれば、センターホールジヤツキ１
を備えている挿込治具２をトンネル内からセグメ
ント３のグラウト孔４に螺合連結し、前端に回転
切削用カツタ５を備えていると共に中間周壁に可
動止水パツキング６により閉塞された開口部７を
備えている穿孔具８を、センターホールジヤツキ
１および前記グラウト孔４に挿入し、次に穿孔具
８をセンターホールジヤツキ１により押進しなが
ら回転して、その穿孔具８により穿孔を行なうの
で、簡単な手段によつてグラウト材９を貫通して
地山１０に達する孔を容易に穿設することができ
ると共に穿孔具８の開口部７を地山１０に位置さ
せることができ、次に穿孔具８内に水圧計１１を
挿入すると共に前記可動止水パツキング６を押圧
移動して開口部７を開放するという簡単な操作を
行なうことにより、容易にかつ迅速に地山１０の
水圧を測定することができる。またトンネルの内
側から地山に向かつて穿孔するので、穿孔予定位
置の地表に障害物があつたり、水底地盤のトンネ
ルであつても任意の位置で地山に向かつて穿孔し
て水圧計１１を設置することができ、さらに大型
で高価なボーリング機械を使用する必要がなく、
しかも穿孔長さが著しく短かくて済むので、高能
率でかつ経済的に水圧計を設置できる等の効果が
得られる。
According to this invention, the center hole jack 1
An insertion jig 2 is screwed into the grout hole 4 of the segment 3 from inside the tunnel, and an opening is provided with a rotary cutting cutter 5 at the front end and is closed by a movable waterproof packing 6 on the intermediate peripheral wall. The drilling tool 8 having the section 7 is inserted into the center hole jack 1 and the grout hole 4, and then the drilling tool 8 is rotated while being pushed by the center hole jack 1, and the drilling tool 8 is rotated. Since drilling is performed, it is possible to easily drill a hole that penetrates the grout material 9 and reaches the ground 10 by a simple means, and the opening 7 of the drilling tool 8 can be positioned in the ground 10. Then, by performing a simple operation of inserting the water pressure gauge 11 into the drilling tool 8 and pressing the movable water stop packing 6 to open the opening 7, the ground 10 can be easily and quickly removed. water pressure can be measured. In addition, since the tunnel is drilled from the inside of the tunnel toward the ground, there may be obstacles on the ground surface at the planned drilling location, and even if the tunnel is underwater, the water pressure gauge 11 may be measured by drilling toward the ground at any location. There is no need to use large and expensive boring machines.
In addition, since the length of the perforation can be extremely short, effects such as being able to install the water pressure gauge efficiently and economically can be obtained.
図面はこの発明の実施例を示すものであつて、
第１図は挿込治具の斜視図、第２図は穿孔具の側
面図、第３図はその穿孔具の一部を拡大して示す
縦断側面図、第４図は水圧計保持具の側面図、第
５図はセグメントの裏側にグラウトを施した状態
を示す縦断側面図、第６図ないし第１０図は水圧
計を設置する場合の施工順序を示す縦断側面図で
ある。
図において、１はセンターホールジヤツキ、２
は挿込治具、３はセグメント、４はグラウト孔、
５は回転切削用カツタ、６は可動止水パツキン
グ、７は開口部、８は穿孔具、９はグラウト材、
１０は地山、１１は水圧計、１２は雄ねじ筒、１
５は回動操作用ハンドル、１６は後部軸、１７は
環状係止溝、１９は前部軸、２１は水圧計保持
具、２３は測定ケーブル、２５は逆止弁、２６は
ゴム製１次止水リング、２８は係合部材、２９は
プラグである。
The drawings show embodiments of the invention,
Fig. 1 is a perspective view of the insertion jig, Fig. 2 is a side view of the drilling tool, Fig. 3 is an enlarged longitudinal side view of a part of the drilling tool, and Fig. 4 is a water pressure gauge holder. The side view, FIG. 5 is a longitudinal sectional side view showing a state in which grout is applied to the back side of the segment, and FIGS. 6 to 10 are longitudinal sectional side views showing the construction order when installing a water pressure gauge. In the figure, 1 is the center hole jack, 2
is an insertion jig, 3 is a segment, 4 is a grout hole,
5 is a rotary cutting cutter, 6 is a movable waterproof packing, 7 is an opening, 8 is a drilling tool, 9 is a grout material,
10 is the ground, 11 is the water pressure gauge, 12 is the male threaded cylinder, 1
5 is a rotating operation handle, 16 is a rear shaft, 17 is an annular locking groove, 19 is a front shaft, 21 is a water pressure gauge holder, 23 is a measurement cable, 25 is a check valve, 26 is a rubber primary A water stop ring, 28 is an engaging member, and 29 is a plug.
Claims (1)
治具２をトンネル内からセグメント３のグラウト
孔４に螺合連結し、前端に回転切削用カツタ５を
備えていると共に中間周壁に可動止水パツキング
６により閉塞された開口部７を備えている穿孔具
８を、センターホールジヤツキ１および前記グラ
ウト孔４に挿入し、次に穿孔具８をセンターホー
ルジヤツキ１により押進しながら回転して、その
穿孔具８によりグラウト材９を貫通して地山１０
まで穿孔すると共に、前記開口部７を地山１０に
位置させ、次に穿孔具８内に水圧計１１を挿入す
ると共に前記可動止水パツキング６を押圧移動し
て開口部７を開放することを特徴とするシールド
トンネル用水圧計設置方法。1 An insertion jig 2 equipped with a center hole jack 1 is screwed and connected to the grout hole 4 of the segment 3 from inside the tunnel, and is equipped with a rotary cutting cutter 5 at the front end and a movable water stop packing on the intermediate peripheral wall. A drilling tool 8 having an opening 7 closed by a hole 6 is inserted into the center hole jack 1 and the grout hole 4, and then the drilling tool 8 is rotated while being pushed by the center hole jack 1. , the drilling tool 8 penetrates the grout material 9 to form the ground 10.
At the same time, the opening 7 is positioned in the ground 10, and then the water pressure gauge 11 is inserted into the drilling tool 8, and the movable water stop packing 6 is pressed and moved to open the opening 7. Features: How to install water pressure gauges for shield tunnels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18984883A JPH0243873B2 (en) | 1983-10-13 | 1983-10-13 | SHIIRUDOTONNERUYOSUIATSUKEISETSUCHIHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18984883A JPH0243873B2 (en) | 1983-10-13 | 1983-10-13 | SHIIRUDOTONNERUYOSUIATSUKEISETSUCHIHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6085194A JPS6085194A (en) | 1985-05-14 |
| JPH0243873B2 true JPH0243873B2 (en) | 1990-10-01 |
Family
ID=16248205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18984883A Expired - Lifetime JPH0243873B2 (en) | 1983-10-13 | 1983-10-13 | SHIIRUDOTONNERUYOSUIATSUKEISETSUCHIHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243873B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7308797B2 (en) * | 2020-08-04 | 2023-07-14 | 大成建設株式会社 | Soil Sampling Jig and Soil Sampling Method in Ground around Shield Tunnel |
-
1983
- 1983-10-13 JP JP18984883A patent/JPH0243873B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6085194A (en) | 1985-05-14 |
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