JPH0194197A - Facing hydraulic holder in mud pressure type shield - Google Patents
Facing hydraulic holder in mud pressure type shieldInfo
- Publication number
- JPH0194197A JPH0194197A JP25226487A JP25226487A JPH0194197A JP H0194197 A JPH0194197 A JP H0194197A JP 25226487 A JP25226487 A JP 25226487A JP 25226487 A JP25226487 A JP 25226487A JP H0194197 A JPH0194197 A JP H0194197A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- water pressure
- mud
- compressor
- holding tank
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 abstract 4
- 230000006837 decompression Effects 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 6
- 238000005086 pumping Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
切羽水圧の変動に対応し切羽水圧を一定（設定圧力）に
保たせることにより切羽の崩壊や噴発を防止できるよう
にした泥水加圧式シールドにおける切羽水圧保持装置に
関する発明である。[Detailed Description of the Invention] [Industrial Application Field] A mud water pressurization type shield that can prevent collapse and blowout of the face by keeping the face water pressure constant (set pressure) in response to fluctuations in the face water pressure. This invention relates to a face water pressure holding device.
従来の切羽水圧急上昇時の対応策として圧抜弁をシール
ド機のバルクヘッド又は送泥回路に設置して対応してい
る。切羽水圧低下時の対応策としては立坑上に加圧水（
泥水）タンクを設置し、送泥する回路を１系統を増設し
チャンバー内に送泥して対応したり、立坑上に加圧水（
泥水）タンクを設置し、既設の送泥回路よりチャンバー
内に送泥して対応したり、坑内（マシン後方）に補助の
泥水タンクを設け、チャンバー内に送泥することにより
対応したり、又は坑内（マシン後方）に逸泥付貯槽を設
け、注入ポンプにて、この逸泥材をチャンバーに供給す
ることにより対応しているものである。Conventional countermeasures against sudden increases in face water pressure include installing pressure relief valves in the shield machine's bulkhead or mud feeding circuit. As a countermeasure against a drop in water pressure at the face, pressurized water (
A mud water) tank is installed, an additional circuit is added to feed mud into the chamber, and pressurized water (muddy water) is installed above the shaft.
You can respond by installing a mud water tank and feeding mud into the chamber from the existing mud feeding circuit, or by installing an auxiliary mud water tank in the mine (behind the machine) and feeding mud into the chamber. This is achieved by installing a storage tank with sludge inside the mine (behind the machine) and supplying this sludge material to the chamber using an injection pump.
泥水加圧シールドにおいてチャンバー内排泥管口等で閉
塞すると切羽水圧が急激に上昇する、また送排泥管を延
長する時−時送泥が止絶え、切羽で逸水が生じると切羽
水圧が自然水圧まで低下する。この二つの現象は切羽安
定の理論に反し切羽崩壊につながると言う問題点を解決
しようとする発明である。In a mud water pressurization shield, if the mud drainage pipe opening in the chamber is blocked, the water pressure at the face will rise rapidly, and when extending the mud pipe, the water pressure at the face will increase if the mud stops flowing and water is lost at the face. Water pressure drops to natural water pressure. This invention aims to solve the problem that these two phenomena go against the theory of face stability and lead to face collapse.
シールド機のチャンバー内の圧力を一定に保つために送
泥管及び排泥管を設けた装置に於いて、送泥管の一箇所
にバルブを設け、該バルブを股ぐようにして水圧保持タ
ンクより突出している二本のパイプを送泥管に連結し、
二本のパイプには各自動開閉バルブを設けると共に、水
圧保持タンクの上部に圧力調整弁を介してコンプレッサ
ーを連結し、水圧保持タンクの上部に空気流量調節弁を
設け下部に緊急排水弁を設け、更に水圧保持タンクに二
個のレベルスイッチを設け前記各自動開閉バルブ、コン
プレッサー、緊急排水弁等と連動するように回路等を形
成して切羽水圧の急上昇、低下に対応して減圧及び泥水
の供給をし、タンク内の圧縮空気によって切羽水圧の上
昇率を緩和し、かつ切羽泥水圧の変動を少なくし問題点
を解決したものである。In a device equipped with a mud feeding pipe and mud draining pipe in order to keep the pressure in the chamber of a shield machine constant, a valve is installed at one point of the mud feeding pipe, and a water pressure holding tank is installed across the valve. Connect the two more protruding pipes to the mud pipe,
Each of the two pipes is equipped with an automatic opening/closing valve, a compressor is connected to the top of the water pressure holding tank via a pressure regulating valve, an air flow control valve is installed at the top of the water pressure holding tank, and an emergency drain valve is installed at the bottom. In addition, two level switches are installed in the water pressure holding tank, and a circuit is formed to operate in conjunction with the automatic opening/closing valves, compressor, emergency drain valve, etc., to reduce pressure and drain muddy water in response to sudden rises or drops in water pressure at the face. This problem was solved by supplying compressed air in the tank, moderating the rate of increase in water pressure at the face mud, and reducing fluctuations in mud water pressure at the face mud.
シールド機（ＩＪのチャンバー（２）内の圧力を一定に
保つために送泥管（３）及び排泥管（４）を設けた装置
に於いて、送泥管（３）の一箇所にバルブ（５）を設け
、該バルブ（５）を股ぐようにして水圧保持タンク（６
）より突出している二本のパイプ（７）を送泥管（３）
に連結し、二本のパイプ（７）には各自動開閉バルブ（
８）を設けると共に、水圧保持タンク（６）の上部に圧
力調整弁（９）を介してコンプレッサーα０）を連結し
、水圧保持タンク（６）の下部に緊急排水弁ａυを設け
、更に水圧保持タンク（６）に二個のレベルスイッチ（
１２１を設け、前記各自動開閉バルブ（８）、コンプレ
ッサーａＯ）、緊急排水弁０υ及び水圧保持タンク（６
）の上部に設けた空気流量調節弁α３）と二個のレベル
スイッチ（１２＋とが連動するように回路等を形成して
成るものである。送泥管（３）を送泥ポンプ（１４１を
介して貯泥槽（１５１に連結すると共に、排泥管（４）
を泥水処理装置（図示せず）に連結する。送泥管（３）
及び排泥管（４）の中間に伸縮管０６）を各設けると共
に、伸縮管ａＦ５の前後にバルブ（１７ａ）（１７ｂ）
を設けるものである。チャンバー（２）近（に於いて送
泥管（３）及び排泥管（４）に各バルブＱ８）を設ける
と共に、バルブα樽の後部に於いて送泥管（３）及び排
泥管（４）とを中間にバルブ翰を有する管（２Ｃｊで連
結する。排泥管（４）と管（２１との連結部とバルブ（
１７ａ）との間で排泥管（４）に排泥ポンプ（２１）を
設け、送泥管（３）においてはバルブα樽と管（２ｃｊ
とが中間に位置するようにして中間にバルブ（２２１を
有するバイパス（ハ）設けるものである。In a shield machine (equipment equipped with a mud feeding pipe (3) and a mud draining pipe (4) in order to keep the pressure in the IJ chamber (2) constant, a valve is installed at one location of the mud feeding pipe (3). (5), and a water pressure holding tank (6
) The two pipes (7) protruding from the mud pipe (3)
The two pipes (7) are connected to each automatic opening/closing valve (
8), a compressor α0) is connected to the upper part of the water pressure holding tank (6) via a pressure regulating valve (9), and an emergency drain valve aυ is provided at the lower part of the water pressure holding tank (6) to further maintain water pressure. Two level switches (
121, each automatic opening/closing valve (8), compressor aO), emergency drain valve 0υ and water pressure holding tank (6
) is formed by forming a circuit etc. so that the air flow control valve α3) provided on the upper part of the mud pump (141) and two level switches (12+) are linked. It is connected to the mud storage tank (151) through the mud drain pipe (4)
is connected to a mud water treatment device (not shown). Sludge pipe (3)
A telescopic pipe 06) is provided in the middle of the mud removal pipe (4), and valves (17a) (17b) are installed before and after the telescopic pipe aF5.
It is intended to provide Each valve Q8 is installed near the chamber (2) on the mud feeding pipe (3) and the mud draining pipe (4), and the mud feeding pipe (3) and the mud flushing pipe (3) are installed at the rear of the valve α barrel. 4) is connected with a pipe (2Cj) having a valve holder in the middle.The connecting part between the mud removal pipe (4) and the pipe (21) and the valve (
A sludge pump (21) is installed in the sludge pipe (4) between the sludge pipe (3) and the valve α barrel and the pipe (2cj
A bypass (c) having a valve (221) is provided in the middle so that the two are located in the middle.
送泥ポンプ０りを作動してチャンバー（２）及び水圧保
持タンク（６）に泥水を圧送し、チャンバー（２）内が
一定圧になったところでバルブ（５）を閉じ二個のレベ
ルスイッチ（１２＋により泥水の量を検知して自動開閉
バルブ（８）を作動して水圧保持タンク（６）内の泥水
を一定にさせておくと同時にコンプレッサーＱＯ）を作
動して水圧保持タンク（６）内に圧縮空気を圧送して常
に泥水の圧送量を一定圧にすることにより切羽水圧が急
上昇した時は電磁弁０３）を開くと同時に圧力調整弁（
９）を閉じ圧縮空気を逃がし泥水の圧送を減じて切羽水
圧を安定させ、切羽水圧が低下したときは電磁弁０３）
を閉じ圧力調整弁（９）開き圧縮空気を水圧保持タンク
（６）に送り泥水をチャンバー（２）に送って切羽水圧
を安定させるようにしたものである。Turn on the mud pump to pump mud into the chamber (2) and water pressure holding tank (6), and when the pressure inside the chamber (2) reaches a constant level, close the valve (5) and turn on the two level switches ( 12+ detects the amount of muddy water and operates the automatic open/close valve (8) to keep the muddy water in the water pressure holding tank (6) constant. By pumping compressed air to keep the pumping amount of mud water at a constant pressure, when the water pressure at the face suddenly increases, open the solenoid valve 03) and at the same time open the pressure regulating valve (
9) to release the compressed air and reduce the pumping of muddy water to stabilize the water pressure at the face, and when the water pressure at the face decreases, close the solenoid valve 03).
When the pressure regulating valve (9) is closed and the pressure regulating valve (9) is opened, compressed air is sent to the water pressure holding tank (6) and muddy water is sent to the chamber (2) to stabilize the water pressure at the face.
（ａ）、切羽水圧の急上昇、低下に対応して減圧及び泥
水の供給の両方が可能である。(a) It is possible to both reduce pressure and supply muddy water in response to sudden increases or decreases in water pressure at the face.
（ｂ）、水圧保持タンク（６）の圧縮空気によって、切
羽水圧の上昇率が緩和される。(b) The rate of increase in water pressure at the face is moderated by the compressed air in the water pressure holding tank (6).
（Ｃ）、既設の送泥回路に取り付けるので回路の増設け
ない。(C) Since it is attached to the existing mud feeding circuit, there is no need to add an additional circuit.
（ｄ）、切羽泥水圧の変動を少なくし、切羽の安全性が
著しく増加する。(d) Fluctuations in mud water pressure at the face are reduced, and the safety of the face is significantly increased.
図は本発明の実施例を示す系統図である。 The figure is a system diagram showing an embodiment of the present invention.
Claims (1)
めに送泥管及び排泥管を設けた装置に於いて、送泥管の
一箇所にバルブを設け、該バルブを股ぐようにして水圧
保持タンクより突出している二本のパイプを送泥管に連
結し、二本のパイプには各自動開閉バルブを設けると共
に、水圧保持タンクの上部に圧力調整弁を介してコンプ
レッサーを連結し、水圧保持タンクの上部に空気流量調
整弁を設け下部に緊急排水弁を設け、更に水圧保持タン
クに二個のレベルスイッチを設け前記各自動開閉バルブ
、コンプレッサー、緊急排水弁等と連動するように回路
等を形成して成ることを特徴とする泥水加圧式シールド
における切羽水圧保持装置。(1) In a device equipped with a mud feeding pipe and mud draining pipe in order to keep the pressure in the chamber of a shield machine constant, a valve is installed at one point of the mud feeding pipe, and the valve is crossed. Two pipes protruding from the water pressure holding tank are connected to the mud feeding pipe, each of the two pipes is provided with an automatic opening/closing valve, and a compressor is connected to the top of the water pressure holding tank via a pressure regulating valve. An air flow rate adjustment valve is installed at the top of the water pressure holding tank, an emergency drain valve is installed at the bottom, and two level switches are installed in the water pressure holding tank, and a circuit is configured to operate in conjunction with the automatic opening/closing valves, compressor, emergency drain valve, etc. A face water pressure holding device in a muddy water pressurizing type shield, characterized in that it is formed by forming, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25226487A JPH0194197A (en) | 1987-10-06 | 1987-10-06 | Facing hydraulic holder in mud pressure type shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25226487A JPH0194197A (en) | 1987-10-06 | 1987-10-06 | Facing hydraulic holder in mud pressure type shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0194197A true JPH0194197A (en) | 1989-04-12 |
Family
ID=17234815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25226487A Pending JPH0194197A (en) | 1987-10-06 | 1987-10-06 | Facing hydraulic holder in mud pressure type shield |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0194197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841578A (en) * | 2017-04-13 | 2017-06-13 | 中国科学院武汉岩土力学研究所 | A kind of slurry shield face mud hydraulic pressure experiment test device and method of testing |
-
1987
- 1987-10-06 JP JP25226487A patent/JPH0194197A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841578A (en) * | 2017-04-13 | 2017-06-13 | 中国科学院武汉岩土力学研究所 | A kind of slurry shield face mud hydraulic pressure experiment test device and method of testing |
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