CN1995702A

CN1995702A - Treatment method for slurry circulation in shield tunneling

Info

Publication number: CN1995702A
Application number: CN 200610132426
Authority: CN
Inventors: 王小军; 何伦; 朱劲峰; 邵孟新; 陈锦云
Original assignee: GUANGDONG PROV FOUNDATION ENGINEERING Co
Current assignee: Guangdong Hua Qiao construction group Limited by Share Ltd
Priority date: 2006-12-30
Filing date: 2006-12-30
Publication date: 2007-07-11
Anticipated expiration: 2026-12-30
Also published as: CN1995702B

Abstract

The invention relates to a slurry circulation treatment method in shield tunneling, comprising following procedures that detecting and estimating if the draining port is jammed, starting the shield tunneling machine to run the sand slurry in positive cycling method if the draining port is not jammed, or starting the shield tunneling machine to rung the sand slurry in reversed cycling method. In the invention, because the reversed cycling method for sand slurry is used to chisel the jam of draining port skillfully, it is provided with simple and easy operation, quick speed and high efficiency. It can save the construction period and can avoid the risky character existing when opening storehouse. It can make the tunneling machine move as it chisels abnormal objects so that it provides better safeguard for controlling the construction period.

Description

The processing method of mud circulation in a kind of shield driving

Technical field

The present invention relates to the realm of building construction, particularly relate to the processing method of the mud circulation in the shield driving device.

Background technology

At numerous construction fields that need with the slurry shield engineerings, when situation that the plasma discharge mouth in muddy water storehouse stops up occurring in the past, need arrive in the muddy water storehouse by artificial starting gate by the staff and carry out labor cleaning's foreign matter, this kind operating type is called in construction and opens a position.Open a position the activity duration long, have a big risk, shield machine need stop; Also need under the geological conditions condition of severe to carry out foundation stabilization construction if run into, increased engineering cost greatly from ground.The operation that opens a position generally needs 2-3 days time, carries out the face of land as needs and reinforces, and then needs the duration to reach more than 1 month, has a strong impact on the duration progress.

Summary of the invention

The objective of the invention is problem, a kind of easily simple, safety, reliable, processing method of saving mud circulation in the high shield driving of duration, efficient controlled is provided at above-mentioned existence.

The objective of the invention is to be achieved through the following technical solutions:

(1), the phenomenon that whether exists moment sharply to raise by the mud pressure that detects in the muddy water storehouse judges whether the plasma discharge mouth stops up, obstruction then forwards step 3 to as the plasma discharge mouth, otherwise

(2), starting the direct circulation mode that shield excavation machine carries out mud turns round, at this moment, close by magnet valve I, electromagnetic valve II, electromagnetic valve II I, electromagnetic valve I V, electromagnetic valve V open, from send the mud pipe, be delivered to send slurry mouthful and enter in the muddy water storehouse soil body that the knife cutting with shield excavation machine gets off by the mud of sludge pump I pump water and take in the mud pipe, and send back to the muddy water treatment system on ground by the mud that mud pipe will have a soil body by the plasma discharge mouth;

(3), start the contrary endless form running that shield excavation machine carries out mud, at this moment, pneumatic operated valve II, pneumatic operated valve are opened, hydraulic valve I, pneumatic operated valve III, pneumatic operated valve V close, the mud that pumps by sludge pump I, from the bypass duct that send the mud pipe, flow to and be delivered to foreign matter that the plasma discharge mouth will be blocked in the plasma discharge mouth in the mud pipe and wash open and enter in the muddy water storehouse foreign matter in the muddy water storehouse is pulverized again, and send the mud pipe to take the muddy water treatment system that sends back to ground to mud pipe out of by second bypass duct from sending the slurry mouth to enter into to send the mud mouth to enter into it.

The present invention is owing to adopt the method for the working method that increases the contrary circulation of mud, utilize the switching of each electromagnetic valve in the mole dexterously, when the plasma discharge mouth in muddy water storehouse is blocked, utilize the break-make of the electromagnetic valve of each bypass duct to carry out the switching of slurry transportation pipeline, promptly when mud is delivered in the shield machine head by sending the mud pipe, switching by each electromagnetic valve, the original slurry mouth that send is become the plasma discharge mouth, original plasma discharge mouth become send the mud mouth, make mud enter the muddy water storehouse by mud pipe and plasma discharge mouth, remove the foreign matter that the plasma discharge mouth stops up thereby reach, send the mud pipe by sending the slurry mouth to enter then, in head, switch by circuit, make that mud comes back to mud pipe after, carry back the mud disposal system on ground.Thereby remove the obstruction of plasma discharge mouth effectively, and it controls simply easily, rapidly and efficiently, both saved the duration the existing risk of having avoided again opening a position, and make shield excavation machine when getting rid of foreign matter, can also continue driving, provide guarantee for controlling the construction period preferably.

Followingly describe realization of the present invention in conjunction with the accompanying drawings in detail:

Description of drawings

Fig. 1 is a shield excavation machine of the present invention mud direct circulation pattern diagram under normal circumstances;

Fig. 2 is the contrary circulation mode schematic diagram of the mud of shield excavation machine of the present invention under stopping state;

The specific embodiment

As Fig. 1～shown in Figure 2, the processing method of mud circulation comprises the steps: in the shield driving of the present invention

(1), in the whole muddy water induction system, in order to control the mud pressure in the muddy water storehouse 11 preferably, then setting and sending the mud pipe is 10 writing brushes, mud pipe is 8 writing brushes, during driving, by the pressure inductor in muddy water storehouse 11, mud pressure value in the muddy water storehouse 11 directly is transferred to central control room, thereby whether the mud pressure that detects in the muddy water storehouse 11 exists the phenomenon of rapid rising of moment to judge whether plasma discharge mouth 14 stops up, and stops up as plasma discharge mouth 14 and then forwards step 3 to, otherwise

(2), starting the direct circulation mode that shield excavation machine 1 carries out mud turns round, at this moment, hydraulic buttery valve I, air-operated solenoid valve II, air-operated solenoid valve III close, air-operated solenoid valve IV, air-operated solenoid valve V open, by sludge pump I pump mud, from send the mud pipe, be delivered to and send slurry mouth 13, and enter in the muddy water storehouse 11, the soil body that the cutterhead 12 of shield excavation machine is cut takes in the mud pipe by plasma discharge mouth 14, and sends back to the mud disposal system on ground by the mud that mud pipe will have a soil body;

(3), start the contrary endless form running that shield excavation machine 1 carries out mud, at this moment, air-operated solenoid valve II opens, hydraulic buttery valve I, air-operated solenoid valve IV, air-operated solenoid valve V closes, the mud that pumps by sludge pump I, from the bypass duct that send the mud pipe, flow to and be delivered to foreign matter that plasma discharge mouth 14 will be blocked in plasma discharge mouth 14 in the mud pipe and wash open and enter in the muddy water storehouse 11 foreign matters in the muddy water storehouse 11 are pulverized again, and send the mud pipe to take the muddy water treatment system that sends back to ground to mud pipe out of by second bypass duct from sending slurry mouthfuls 13 to enter into to send the mud mouth to enter into it.

Claims

1, the processing method of mud circulation in a kind of shield driving is characterized in that comprising the steps:

(1), the phenomenon that whether exists moment sharply to raise by the mud pressure in the pressure detecting muddy water storehouse (11) judges whether plasma discharge mouth (14) stops up, obstruction then forwards step 3 to as plasma discharge mouth (14), otherwise

(2), starting the direct circulation mode that shield excavation machine (1) carries out mud turns round, at this moment, close by magnet valve I, electromagnetic valve II, electromagnetic valve II I, electromagnetic valve II IV, electromagnetic valve V open, from send the mud pipe, be delivered to send slurry mouthful (13) and enter in the muddy water storehouse (11) soil body that the cutterhead (12) with shield excavation machine cuts by the mud of sludge pump I pump water and take in the mud pipe, and send back to the muddy water treatment system on ground by the mud that mud pipe will have a soil body by plasma discharge mouth (14);

(3), start the contrary endless form running that shield excavation machine (1) carries out mud, at this moment, electromagnetic valve II, electromagnetic valve II I opens, electromagnetic valve I, electromagnetic valve I V, electromagnetic valve V closes, the mud that pumps by sludge pump I, from the bypass duct that send the mud pipe, flow to and be delivered to foreign matter that plasma discharge mouth (14) will be blocked in plasma discharge mouth (14) in the mud pipe and wash open and enter in the muddy water storehouse (1) foreign matter in muddy water storehouse (1) is pulverized again, and send the mud pipe to take the muddy water treatment system that sends back to ground to mud pipe out of by second bypass duct from sending slurry mouthful (13) to enter into to send the mud mouth and enter into it.