JP2001288981A - Slurry transporter in slurry type shield tunneling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a relay pipe and a vertical piping unnecessary, and to converge ejected slurry with the closing of a slurry withdrawal pipe to the slurry withdrawal pipe and discharge the slurry. SOLUTION: The slurry transporter has a bypass pipe 14 directly making slurry on the slurry feed pipe flow to the slurry withdrawal pipe side when the slurry withdrawal pipe is closed near a face and slurry is ejected, a suction pipe 2 disposed at a place where slurry is ejected, a suction pump 3 connected to the suction pipe and a tank unit 4 connected to the suction pump, the slurry withdrawal pipe H is connected to the tank unit 4, and ejected slurry is converged to the slurry withdrawal pipe H and discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muddy water transport device in a muddy water shield method.

[0002]

2. Description of the Related Art When a tunnel is constructed by a muddy water shield method, since muddy water is ejected near a face due to a blockage of a pipe for sending and discharging muddy water, it is necessary to discharge the muddy water to the outside of the tunnel. Conventionally, such a drainage operation has been performed by installing a vacuum pump at the bottom of a starting shaft, and using a drainage pipe laid from a face through a shaft to a muddy water treatment facility on the ground.

[0003]

However, the above-mentioned conventional apparatus has the following problems. <B> To discharge the mud squirted out of the tunnel,
It is necessary to install long vertical drainage pipes from the bottom of the shaft to the muddy water treatment facilities on the ground. <B> In the case of a long-distance tunnel, it is necessary to provide a relay vacuum pump in the mine in the middle of the pipe laid all over the mine line. <C> In the case of a small-section tunnel, the relay pump becomes an obstacle, making it difficult to transport materials and equipment.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and eliminates the need for a vertical drain pipe and a relay pump. An object of the present invention is to provide a muddy water transport device in a shield method.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides muddy water to a face through a mud pipe, and excavates mud from the face through a mud pipe together with excavated earth and sand. In a muddy water transport system using the muddy shield method that discharges and excavates a tunnel, a bypass device that allows the muddy water on the mud pipe side to flow directly to the mud pipe side when the mud pipe is closed near the face and muddy water gushes And a suction pipe disposed at a position where muddy water is spouted, a suction pump connected to the suction pipe, and a tank unit connected to the suction pump. A muddy water transport device in a muddy water shield method, wherein the discharged muddy water is combined with the muddy drain and discharged.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

<A> Overview of muddy water transport In the muddy water shield method, as shown in FIG. 1, a mud pipe D from a regulating tank A provided on the ground to a face C via a mud pump B.
And a mud pipe H returning from the face C to the adjusting tank A via the mud water treatment equipment G via the mud pumps E and F.

<B> Bypass device 1 Electromagnetic check valves 11 and 12 are disposed immediately after the pump E of the above-mentioned exhaust pipe H and on the way to the face of the mud feeding pipe D. Further, a bypass pipe 14 for connecting the mud feeding pipe D and the mud discharging pipe H immediately after the electromagnetic check valves 11 and 12 is provided.
The bypass pipe 14 is provided with an electromagnetic check valve 13 that allows a flow from the mud pipe D to the mud pipe H. In the above, the bypass device 1 is configured by the check valves 11, 12, 13 and the bypass pipe 14.

<C> Suction pipe 2 and suction pump 3 The suction pipe 2 uses a pipe made of steel, resin, or the like. One end of the suction pipe 5 is disposed at a position from which muddy water is spouted, and the other end is connected to a suction port of the suction pump 3. The suction pump 3 uses a known vacuum pump or the like, and is mounted on a truck (not shown). A pipe is led out of the suction pump 3, and the other end of the pipe is connected to the tank unit 4.

<D> Tank Unit 4 The tank unit 4 comprises a collection tank and a discharge pump (not shown). The recovery tank is a tank for temporarily storing the ejected muddy water transported through the suction pipe 2 and the suction pump 3. The discharge pump discharges the muddy water into a drain pipe H
This is a pump for pumping toward.

[0011] As described above, the muddy water transport device of the present invention comprises:
The muddy water transport device in the muddy water shield method includes a bypass device 1, a suction pipe 2, a suction pump 3, and a tank unit 4.

<E> Discharge of ejected muddy water According to the muddy water transport device having the above-mentioned configuration, when the mud pipe is closed and closed near the face and muddy water is ejected, first, the bypass device 1 is moved to a central monitoring room (not shown) on the ground. Driving in muddy water, ie
The check valves 11 and 12 as shown in FIG. 1 are closed, the switching valve 13 is opened, and the muddy water in the mud pipe D is
Turn and avoid reaching the face. Next, the muddy water spouted into the mine is sequentially sucked from the tip of the suction pipe 2 by the operation of the suction pump 3. Then, the muddy water sucked by the suction pump 3 is sent out to the mud discharge pipe H via the pipe by driving of the discharge pump connected to the tank unit 4 via the pipe. The muddy water that has flowed into the drainage pipe H is discharged to the muddy water treatment equipment G by driving the discharge pump F.

[0013]

According to the present invention, the following effects can be obtained from the above description. <A> According to the muddy water transport device of the present invention, it is not necessary to separately provide a long drainage pipe or a relay vacuum pump in the pit, and the cost of materials and labor can be significantly reduced. <B> According to the muddy water transport device of the present invention, a relay pump and piping are not required, and a wide effective space in the pit can be secured. <C> According to the muddy water transport device of the present invention, the distance between the suction pump and the tank unit can be easily reduced via the fountain point and the suction pipe, so that a large amount of muddy water can be reliably discharged.
Can be done quickly.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a muddy water transport device according to the present invention.

Claims (1)

[Claims] 1. A muddy water transport device in a muddy shield construction method in which muddy water is supplied to a face through a mud pipe and muddy water is discharged from the face together with excavated earth and sand through a mud pipe to excavate a tunnel. When the muddy pipe is closed and muddy water gushes, a bypass device that allows the muddy water on the mud pipe side to flow directly to the muddy pipe side, a suction pipe arranged at a position where the muddy water gushes, and the suction pipe A suction pump connected to the suction pump, and a tank unit connected to the suction pump. The tank unit is connected to the drainage pipe, and the ejected muddy water is joined to the drainage pipe and discharged. Mud transport equipment in the mud shield method.