WO2017075742A1

WO2017075742A1 - Device and process for receiving slurry-balanced pipe jacking machine in high-water-pressure condition

Info

Publication number: WO2017075742A1
Application number: PCT/CN2015/000884
Authority: WO
Inventors: 彭仕国; 韩利民; 潘建立; 张斌梁; 高海东; 黄欣; 刘应亮; 马胜利; 罗兴虎; 宫大辉
Original assignee: 中铁十八局集团有限公司
Priority date: 2015-11-04
Filing date: 2015-12-10
Publication date: 2017-05-11
Also published as: JP2017536490A; CN105257299B; JP6397940B2; CN105257299A

Abstract

A device and a process for receiving a slurry-balanced pipe jacking machine in a high-water-pressure condition. As to the device and the process, a steel brush is used as a first water-stopping curtain of a pressurized receiving cabin, to make it have a sufficient pressure-bearing capacity to bear the water and earth pressure on an outer wall of a pipe joint, preventing the soil erosion; rubber is used for a second water-stopping curtain (23) to stop water; and then inject Marithan between the two water-stopping curtains to close the water-system communication between the pipe jacking machine and the formation, and inject cement paste between the outer wall of the pipe joint and an orifice-pipe to achieve clogging. Accordingly, there is no water leakage when the cabin is opened, and the operation of receiving the pipe jacking machine is successfully completed. Said device and process can effectively prevent water-permeating and water-leakage accidents during the operation of the slurry-balanced pipe jacking machine, improving the security of the process implementation.

Description

Mud water balance pipe jacking device receiving device and process under high water condition

Technical field

The invention relates to a mud water balance pipe jack receiving device and a process under high water conditions, and belongs to the technical field of mud water balance pipe jacking.

Background technique

The acceptance of the mud-water balance pipe jacking machine is one of the major risk points in the pipe jacking construction, especially in complex geological strata with abundant groundwater, weak soil and large water pressure. After the pipe jacking machine enters the pressurized receiving compartment, it is necessary to open the handling head and remove the pipeline. During the process of opening the cabin, due to the rich groundwater and high pressure, the soil outside the pipe section is easily washed out, and there is water and mud, which causes water and soil loss in the stratum, affecting the curve of the pipe jacking and the construction of the pipe curtain. Large and further may cause safety hazards such as surface collapse or cracks.

Summary of the invention

The invention adopts a steel brush as the first water stop curtain of the pressurized receiving compartment, so that it has sufficient pressure bearing capacity to withstand the water and earth pressure of the outer wall of the pipe joint to prevent soil erosion; the second adopts a rubber water curtain Stop the water; then, in the two water curtain curtains, the Ma Lisan closed pipe jacking machine is connected with the water system of the stratum, and the cement pipe is sealed between the outer wall of the pipe joint and the orifice pipe, so that no water leakage is achieved in the opening, and the pipe jacking is successfully completed. The machine receives the work.

In order to achieve the above object, the technical solution adopted by the present invention is a mud-water balance pipe jacking machine receiving device under high water conditions, which comprises a pipe jacking machine head 4, a receiving orifice pipe 6, a front tank 7, a middle tank 8, and a tail tank. 9. Pressure relief pipe 10, pressure relief pipe valve 11, receiving compartment base 12, pipe jacking machine receiving platform 13, mud pool 14, observation window 15, well-shaped rib 16, bolt hole 17, slurry hole 18, front Compartment reinforcing rib 19, middle cabin reinforcing rib 20, reserved grouting pipe 21, steel brush curtain 22, rubber water curtain 23;

The front compartment 7, the middle compartment 8, and the tail compartment 9 are sequentially connected to form a cabin portion, and the cabin portion is mounted on the receiving compartment base 12; the pipe jacking machine head 4 is disposed at the front end of the cabin portion and is in contact with the tube curtain section 5 ;

The receiving compartment base 12 is mounted on the jacking machine receiving platform 13; the front compartment 7 and the receiving orifice tube 6 are passed The bolting connection is fixed; the pipe jacking machine receiving platform 13 is disposed between the side wall of the pipe curtain working working well 1 and the reinforced concrete underground continuous wall 2; one end of the pressure releasing pipe 10 is connected with the tail tank 9, and the pressure releasing pipe 10 is provided with a drain The pressure tube valve 11 and the other end of the pressure relief tube 10 are connected to the mud pool 14; the end surface of the tail chamber 9 is provided with a well-shaped rib 16 , and the end surface of the tail chamber 9 is provided with an observation window 15 , and the end surface of the tail chamber 9 is provided at the bottom end. There is a discharge hole 18; a bolt hole 17 is uniformly symmetrically arranged on the end surface of the tail chamber 9; a front compartment reinforcement rib 19 is welded to the periphery of the front compartment 7; a middle compartment reinforcement rib 20 is welded to the periphery of the middle compartment 8; A steel brush curtain 22 is disposed on the cabin portion between the mouth tube 6 and the front cabin 7; a rubber water curtain 22 is disposed on the cabin portion between the front cabin 7 and the middle cabin 8; The slurry tube 21 is disposed on a cabin portion between the receiving orifice tube 6 and the steel brush curtain 22 and a portion of the body between the steel brush curtain 22 and the rubber water curtain 22.

The process of receiving the mud-water balance pipe jacking machine under high water conditions, the process flow is as follows,

S1 is connected to the receiving orifice tube 6 by bolting on the pipe jacking machine receiving platform 13 according to the front tank 7, the middle tank 8, and the tail tank 9, as shown in Fig. 1.

S2 fills the receiving tank from the pressure relief pipe 10 to the receiving compartment, checks the tightness of the receiving compartment, tightens the bolts in time, tightens the bolts in time, replaces the rubber pad, and so on. After the qualified, the receiving compartment is emptied, and the pressure relief pipe valve 11 is opened. Fill the mud with water to balance the mud.

Before the S3 pipe jacking machine 4 receives the head posture according to the measurement result, the pipe jacking machine 4 can reach the receiving cabin in a good posture.

The drilling speed of the S4 pipe jacking machine 4 is controlled within 1cm/min, and the concrete wall 3 is decelerated to break into the concrete door, and the pressure relief pipe valve 11 is closed.

The S5 pipe jacking machine 4 enters the receiving compartment as a whole and reaches the designated position, extracts the mud in the tank, flushes the mud pipeline, and stops the pipe jacking machine 4.

S6 from the reserved grouting pipe 21 to the two curtains, Ma Li San stopped water (reserved grouting pipe is arranged in the front, the lower left and the lower right three positions, arranged in a circular direction of 120 degrees); The slurry is a small pneumatic grouting machine. Firstly, the lower side is reserved for the grouting pipe, and the upper part is reserved for the grouting pipe. When grouting, the grouting speed should not be too fast, avoiding the loss of the slurry, so that the Ma Li San and the steel brush can be fully combined to form a whole, preventing the formation. Soil erosion, the closed front compartment 7 is connected to the water system of the middle compartment 8, as shown in Figure 3.

After the S7 is finally solidified, the water stop effect is checked. Open the reserved grouting pipe, use the steel bar to dredge the grouting pipe into the cabin, and start the grouting of the receiving orifice pipe without seepage; if there is water seepage, fill the water seepage part with Ma Lisan.

S8 grouts the cement slurry from the reserved grouting pipe on the receiving orifice pipe 6 (the reserved grouting pipe is arranged at the top, bottom left and bottom right positions of the receiving orifice pipe, and is arranged in a circular direction of 120 degrees); The hydraulic grouting machine is used. The grouting pipe is reserved on one side, and the grouting pipe is opened on the other side. When the grouting pipe on the other side is reserved, the grouting pipe is closed and then opened. The grouting pipe is reserved in the upper part, and the reserved grouting pipe is closed when the slurry flows out; if the grouting pressure is too large, the other grouting pipe is grouted, so that the slurry is filled between the outer wall of the pipe joint and the receiving orifice pipe. The gap, the closed front compartment 7, the orifice tube 6 and the water in the formation.

After the S9 is substantially solidified, the grouting effect is checked. Open the reserved grouting pipe, unblock the grouting pipe into the receiving orifice pipe, if there is no water seepage, you can open the warehouse to receive the work; if there is water seepage, refill the seepage part with cement slurry.

After the S10 grouting effect is passed, the slurry hole 18 is opened to remove the mud in the tank, and the back cover is opened to directly check whether there is water leakage or water seepage in the tank. When there is no water leakage, the upper half of the middle tank 8 and the tail tank 9 are removed. Remove the mud and sand in the cabin, lift the pipe jacking machine 4, and then remove the lower semicircular portion.

S11 in the first and second tube sections 5 after the pipe jacking machine 4, the position of the reserved guide wire tube is injected into the double liquid slurry to stop the water, completely blocking the communication between the receiving orifice tube 6 and the water in the formation; The removal of the pipeline inside the pipe can be started.

After the S12 is solidified, the guide wire tube is opened to check the water stop effect, and the water seepage part is filled; when the grouting effect meets the requirements, the front tank and the transition ring are removed, and the pipe joint 5 and the receiving hole are immediately blocked by the steel plate. mouth The gap between the tubes 6 is as shown in FIG.

After the S13 pipe is completely removed, the mud replacement grouting is carried out, and the receiving work is completed.

Compared with the prior art, the invention can effectively prevent the water leakage and water leakage accidents of the mud water balance pipe jacking machine working process, and greatly improve the safety of the process implementation.

DRAWINGS

Figure 1 is a schematic view of the operation of the pressurized receiving compartment of the muddy water balance pipe jacking machine.

Figure 2 is a schematic view showing the structure of the rear hatch of the pressurized receiving compartment of the mud-water balance pipe jacking machine.

Fig. 3 is a schematic view showing the structure of the water curtain of the front compartment of the pressurized receiving tank of the mud-water balance pipe jacking machine.

Figure 4 is a schematic view of the sealing plate of the pipe wall and the orifice pipe.

In the picture: 1-tube curtain construction working well, 2-reinforced concrete underground continuous wall, 3-primed concrete underground continuous wall, 4-pipe tube head, 5-tube curtain tube section, 6-receiving orifice tube, 7 - front compartment, 8-mid compartment, 9-tail compartment, 10-pressure relief pipe, 11-relief pipe valve, 12-receiving tank base, 13-pipe jacking platform, 14-mud pool, 15-observation Window, 16-well-shaped ribbed, 17-bolt hole, 18-slurry hole, 19-front compartment reinforced rib, 20-middle compartment reinforced rib, 21- reserved grouting tube, 22-steel brush Curtain, 23-rubber water curtain, 24-block steel plate.

detailed description

As shown in Figure 1-4, the mud-water balance pipe jacking machine receiving device under high water conditions includes a pipe jacking machine head 4, a receiving orifice pipe 6, a front tank 7, a middle tank 8, a tail tank 9, and a pressure relief. Tube 10, pressure relief pipe valve 11, receiving compartment base 12, pipe jacking machine receiving platform 13, mud pool 14, observation window 15, well-shaped rib 16, bolt hole 17, slurry hole 18, front compartment reinforcing rib 19. The mid-cabin reinforced rib 20, the reserved grouting pipe 21, the steel brush water curtain 22, the rubber water curtain 22;

Claims

A mud-water balance pipe jacking machine receiving device under high water conditions, characterized in that the device comprises a pipe jacking machine head (4), a receiving orifice pipe (6), a front tank (7), a middle tank (8), a tail tank (9), pressure relief pipe (10), pressure relief pipe valve (11), receiving compartment base (12), pipe jacking machine receiving platform (13), mud pool (14), observation window (15), well shape Rib (16), bolt hole (17), slurry hole (18), front tank reinforcement rib (19), middle tank reinforcement rib (20), reserved grouting pipe (21), steel brush water stop Curtain (22), rubber water curtain (23);

The front compartment (7), the middle compartment (8) and the tail compartment (9) are sequentially connected to form a cabin part, the cabin part is mounted on the receiving compartment base (12); the pipe jacking head (4) is arranged in the cabin Part of the front end and in contact with the tube tube section (5);

The receiving compartment base (12) is mounted on the pipe jacking machine receiving platform (13); the front compartment (7) and the receiving orifice pipe (6) are fixed by bolts; the pipe jacking machine receiving platform (13) is arranged in the pipe curtain construction Between the side wall of the working well (1) and the reinforced concrete underground continuous wall (2); one end of the pressure relief pipe (10) is connected with the tail tank 9, and the pressure relief pipe (10) is provided with a pressure relief pipe valve (11), The other end of the pressure relief pipe (10) is connected with the mud pool (14); the end of the tail tank (9) is provided with a ribbed rib (16), and the end of the end of the tail (9) is provided with an observation window (15). The bottom end of the tail chamber (9) is provided with a slurry discharge hole (18); the end surface of the tail chamber (9) is uniformly symmetrically provided with a bolt hole (17); and the front chamber (7) is welded with a front chamber reinforcement rib ( 19); the middle compartment (8) is welded with a middle cabin reinforcing rib (20); a cabin brush body between the receiving orifice tube (6) and the front compartment (7) is provided with a steel brush curtain ( 22); a rubber water curtain (23) is arranged on the cabin portion between the front cabin (7) and the middle cabin (8); the reserved grouting pipe (21) is arranged at the receiving orifice pipe (6) and Between the steel brush curtains (22) and between the steel curtain curtain (22) and the rubber water curtain (23).
The process of receiving the mud-water balance pipe jacking machine under high water conditions is characterized in that the process flow is as follows.

S1 is connected to the receiving orifice tube (6) by bolts on the pipe jacking machine receiving platform (13) according to the front compartment (7), the middle compartment (8) and the tail compartment (9);

S2 fills the receiving tank from the pressure relief pipe (10) with clean water, checks the tightness of the receiving compartment, tightens the bolts in time, tightens the bolts, replaces the rubber pad, and other measures to repair. After passing the air, the receiving compartment is evacuated and the pressure relief valve is opened. (11), filled with muddy water balance mud;

The S3 pipe jacking machine (4) adjusts the attitude of the nose according to the measurement result before receiving, so that the pipe jacking machine (4) can reach the receiving cabin in a good posture;

S4 pipe jacking machine (4) drilling speed is controlled within 1cm / min, deceleration to break the hole door concrete wall (3) began to enter the receiving compartment, close the pressure relief pipe valve (11);

The S5 pipe jacking machine (4) enters the receiving compartment as a whole and reaches the designated position, extracts the mud in the tank, flushes the mud pipeline, and stops the pipe jacking machine (4);

S6 from the reserved grouting pipe (21) to the two curtains, Ma Li San stopped water, reserved grouting pipe is arranged in the front compartment, the lower left and the lower right three positions, arranged in a circular direction of 120 degrees; The grouting adopts a small pneumatic grouting machine. The grouting pipe is reserved on the lower side, and the grouting pipe is reserved in the upper part. The grouting speed should not be too fast when grouting, avoiding the loss of slurry, and making the powder and steel The brush can be fully combined to form a whole body to prevent water and soil loss in the formation, and the closed front compartment (7) is connected with the water system of the middle compartment (8);

After the S7 is finally solidified, the water-stopping effect is checked; the reserved grouting pipe is opened, and the grouting pipe is dredged into the tank by the steel bar, and the receiving orifice pipe can be started without water seepage; if there is water seepage, the water seepage Part replenishment Ma Lisan;

S8 grouts the cement slurry from the reserved grouting pipe on the receiving orifice pipe (6), and the reserved grouting pipe is arranged at the top, bottom left and bottom right positions of the receiving orifice pipe, and is arranged in a circular direction of 120 degrees; grouting At the time, the hydraulic grouting machine is used, the grouting pipe is reserved on one side, and the grouting pipe is opened on the other side. When the grouting pipe on the other side is reserved, the grouting pipe is closed, and then the grouting pipe is closed. Open the upper reserved grouting pipe, close the reserved grouting pipe when the slurry flows out; if the grouting pressure is too large, change the other grouting pipe to grout, so that the slurry fills the outer wall of the pipe joint and the receiving orifice pipe a gap, closing the front compartment (7), the orifice tube (6) and the water in the formation;

S9 After the cement slurry is basically solidified, check the grouting effect; open the reserved grouting pipe, dredge the grouting pipe to the receiving orifice pipe, and if there is no water seepage, open the binning work; if there is water seepage, fill the seepage site Grouting slurry

After the S10 grouting effect is passed, open the slurry drain hole (18) to remove the mud in the cabin, open the back cover and directly check whether there is water leakage or water seepage in the cabin. When there is no water leakage, remove the middle cabin (8) and the tail tank (9) ) in the upper semicircle, remove the mud and sand in the cabin, lift the pipe jacking machine (4), and then remove the lower semicircle;

S11 in the first and second tube sections (5) after the pipe jacking machine (4), the position of the reserved guide wire tube is injected into the double liquid slurry to stop the water, completely blocking the communication between the receiving orifice tube (6) and the water in the formation. After the grouting is completed, the demolition work of the pipeline can be started;

After S12 is solidified, the guide wire tube is opened to check the water stop effect, and the water seepage part is refilled; after the grouting effect meets the requirements, the front tank and the transition ring are removed, and the pipe joint is immediately blocked with a steel plate (5) Receiving a gap between the orifice tubes (6);

After the S13 pipe is completely removed, the mud replacement grouting is carried out, and the receiving work is completed.