JP2017536490A - High water pressure compatible mud balance pipe propulsion device and construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaching unit device and a construction method for a mud balance pipe propulsion device compatible with high water pressure. SOLUTION: A reaching device and method for a high water pressure compatible mud balance pipe propulsion device, using a wire brush as a first-layer water-stopping material for a reaching-port pressure chamber and having sufficient bearing capacity. Can withstand the soil pressure on the outer wall of the section and prevent sediment discharge; the second layer is water-stopped with a rubber waterproofing material; and polyurethane resin is injected between the two water-stopping materials to inject water from the pipe thruster and the formation The system connection is closed, and mud water is injected between the pipe section outer wall and the arrival port pipe to close it, so that there is no water leakage even when the reaching section chamber is opened, and the pipe propulsion machine can be completed smoothly. Compared with the prior art, the present invention can effectively prevent water permeation and water leakage accidents in the work process of the mud balance pipe propulsion machine, and greatly improve the safety of implementation. [Selection] Figure 3

Description

  The present invention belongs to the field of mud balance pipe propulsion technology, and relates to a high water pressure compatible mud balance pipe propulsion unit reacher and method.

  The reach of the mirror of the mud balance pipe propulsion machine is one of the major risk points during pipe propulsion construction, especially in complex geological formations where groundwater is abundant, soil is soft, and water pressure is high. After the pipe propulsion machine enters the reaching section pressure chamber, it is necessary to open the reaching section chamber to process the cutter head and to remove the wiring and piping. During the process of opening the reaching chamber, groundwater is abundant and pressure is high, the soil body on the outer wall of the pipe section is easy to scour, spring water and boiling appear, drain the earth and sand in the formation, pipe propulsion curve alignment and pipe The roof construction will be affected and the amount of sediment runoff will be excessive, which may cause safety problems such as subsidence or cracking of the ground surface.

  The present invention uses a wire brush as the first layer water-stopping material of the reaching part pressure chamber, has sufficient bearing capacity, can withstand the water and soil pressure on the outer wall of the pipe section, and prevents sediment discharge; Water is stopped with a rubber waterproofing material; and polyurethane resin is injected between the two layers of water stopping material to block the water connection between the pipe propulsion unit and the formation, and muddy water is injected between the outer wall of the pipe section and the access pipe. By closing it, there is no water leakage even if the reaching portion chamber is opened, and the reaching operation of the pipe propulsion device is completed smoothly.

In order to achieve the above object, the technical means used by the present invention is a high water pressure compatible mud balance pipe propulsion unit reaching unit, which includes a pipe propulsion unit cutter head 4, an access port pipe 6, and a front chamber 7. The center chamber 8, the rear chamber 9, the pressure relief pipe 10, the pressure relief pipe valve 11, the reaching part chamber base 12, the pipe propulsion machine reaching base 13, the muddy water tank 14, the viewing window 15, the well-shaped rib plate 16 and the bolt. Including a hole 17, a mud hole 18, a front chamber reinforcing rib plate 19, a center chamber reinforcing rib plate 20, a preliminary grout hose 21, a wire brush type water blocking material 22, and a rubber water blocking material 23;
The front chamber 7, the center chamber 8, and the rear chamber 9 are sequentially connected to form a reaching portion chamber body, and the chamber body is mounted on the reaching portion chamber base 12; the tube propulsion machine cutter head 4 is at the front end of the chamber body. In contact with the pipe section 5 of the pipe roof;
The reach chamber pedestal 12 is mounted on a pipe propulsion machine arrival cradle 13; the front chamber 7 and the arrival port pipe 6 are solidified through bolts; the pipe propulsion machine cradle 13 is a pipe roof construction work well 1 Provided between the side wall and the reinforced concrete underground continuous wall 2; one end of the pressure relief pipe 10 is connected to the rear chamber 9, and a pressure relief pipe valve 11 is provided on the pressure relief pipe 10, and the other end of the pressure relief pipe 10. Is connected to the muddy water tank 14; a well-shaped rib plate 16 is provided on the end surface of the rear chamber 9, a viewing window 15 is provided on the top of the end surface of the rear chamber 9, and a drainage hole 18 is provided on the bottom of the end surface of the rear chamber 9; Bolt holes 17 are provided uniformly and symmetrically on the end face of the chamber 9; a front chamber reinforcing rib plate 19 is welded to the outer periphery of the front chamber 7; A center chamber reinforcing rib plate 20 is welded to the outer periphery of the chamber 8; a wire brush type water blocking material 22 is provided on the chamber body between the access port pipe 6 and the front chamber 7; A rubber waterproofing material 23 is provided on the chamber body between them; a preliminary grout hose 21 is provided on the chamber body between the inlet pipe 6 and the wire brush type water stopping material 22 and the wire brush type water stopping material 22 and the rubber water stopping material. It is provided on the chamber body between the material 23.

  It is a mud balance pipe propulsion device reaching method for high water pressure, and the flow of the method is as follows.

  S1: As shown in FIG. 1, after assembling the front chamber 7, the center chamber 8, and the rear chamber 9 in this order on the tube propulsion device arrival stand 13, they are connected to the arrival port tube 6 with bolts.

  S2: Fill the reaching part chamber with clean water from the pressure relief pipe 10, inspect the airtightness of the reaching part chamber, check for water leakage / leakage, repair it by tightening bolts, replacing the joint rubber packing, etc. The water in the reaching section chamber is discharged until it is empty, and the valve 11 of the pressure relief pipe is opened to fill mud balance mud.

  S3: The cutter head posture is adjusted according to the survey result before the tube propulsion device 4 arrives, and the tube propulsion device 4 reaches the reaching section chamber in a good posture.

  S4: The excavation speed of the pipe propulsion unit 4 is controlled to within 1 cm / min, the speed is reduced, the mine-portion unreinforced concrete 3 is mirror-cut to penetrate into the reaching part chamber, and the valve 11 of the pressure relief pipe is closed.

  S5: The entire pipe propulsion unit 4 enters the arrival designation position of the reaching section chamber, drains the muddy water in the chamber, cleans the mud pipe, and stops the operation of the pipe propulsion unit 4.

  S6: As shown in FIG. 3, the preliminary grout hose 21 is injected with polyurethane resin between the two layers of the water stop material to stop the water (the preliminary grout hose has three positions: directly above the front chamber, lower left and lower right. The grout uses a small pneumatic grout pump, and is first injected into the lower auxiliary grout hose and then into the upper auxiliary grout hose. The speed is as slow as possible, avoiding grout spills, connecting polyurethane resin and wire brush together to form one piece, preventing sediment spills in the formation, and blocking the water system communication between front chamber 7 and center chamber 8 .

  S7: After the polyurethane resin solidifies, the water stop effect is inspected, the preliminary grout hose is opened, the grout conduit is crazed into the chamber with a reinforcing bar, and if there is no water immersion, the access port pipe can be grouted; If there is, inject the polyurethane resin into the flooded area.

  S8: Inject muddy water from the auxiliary grout hose on the inlet pipe 6 (the auxiliary grout hose is arranged at three positions, directly above the inlet pipe, lower left and lower right, and arranged at 120 degrees in the circumferential direction); , Using a hydraulic grouting pump, first inject into the auxiliary grout hose on one side, open the auxiliary grout hose on the other side, close the grout hose when the grout liquid flows out from the auxiliary grout hose on the other side, and Open the auxiliary grout hose and close the auxiliary grout hose when the grouting liquid flows out; if the grout pressure is excessive, grout in place of the other auxiliary grout hose and between the outer wall of the pipe section and the inlet pipe The gap is filled with the grout liquid, and the communication between the front chamber 7 and the inlet pipe 6 and the water in the formation is closed.

  S9: Check the grouting effect after the mud has solidified, open the preliminary grouting hose, grouting the grouting pipe to the inside of the arrival port, and if there is no water, the chamber can be opened and the reaching work can be done; Inject muddy water into the flooded area.

  S10: After passing the inspection of the grouting effect, the mud hole 18 is opened to discharge the muddy water in the chamber, the rear cover is opened, and the chamber is directly checked for leakage or inundation. The upper half of the chamber 8 and the rear chamber 9 are disassembled, the muddy water and gravel in the chamber are cleaned, and when the pipe propulsion unit 4 is pulled up, the lower semicircle is immediately dismantled.

  S11: Water injection is stopped by injecting a two-component grout into the preliminary sheath pipe position in the pipe section 5 of the first and second sections after the pipe propulsion unit 4, and the communication between the arrival pipe 6 and the water in the formation is completely cut off. After dismantling the grout, you can start dismantling the wiring and piping in the pipe.

  S12: As shown in FIG. 4, after the two-component grout is solidified, the water pipe is opened to inspect the water-stopping effect, and grouted to a part where the water has been submerged; The ring is disassembled, and the gap between the tube section 5 and the arrival port tube 6 is immediately closed with a steel plate.

  S13: After dismantling all the wiring and piping in the pipe, mud substitution grout is performed to complete the reaching operation.

  Compared with the prior art, the present invention can effectively prevent water permeation and water leakage accidents in the work process of the mud balance pipe propulsion machine, and greatly improve the safety of implementation.

It is a schematic diagram which shows the reach | attainment part pressure chamber operation | work of a mud balance pipe | tube propulsion machine. It is a schematic diagram which shows the structure of the rear chamber rear cover of the reach | attainment part pressure chamber of a mud balance pipe | tube propulsion machine. It is a schematic diagram which shows the structure of the front chamber water stop material of the reach | attainment part pressure chamber of a mud balance pipe | tube propulsion machine. It is a schematic diagram which shows the steel plate for obstruction | occlusion of a pipe wall and an access port pipe.

As shown in FIGS. 1 to 4, the reaching device of the high water pressure compatible mud balance pipe propulsion machine includes a pipe propulsion machine cutter head 4, an arrival port pipe 6, a front chamber 7, a center chamber 8, a rear chamber 9 and a pressure. Relief pipe 10, pressure relief valve 11, reaching portion chamber base 12, tube propulsion device arrival receptacle 13, muddy water tank 14, viewing window 15, I-shaped rib plate 16, bolt hole 17, mud hole 18, and front chamber A reinforcing rib plate 19, a center chamber reinforcing rib plate 20, a preliminary grout hose 21, a wire brush type water blocking material 22, and a rubber water blocking material 23;
The front chamber 7, the center chamber 8, and the rear chamber 9 are sequentially connected to form a reaching portion chamber body, and the chamber body is mounted on the reaching portion chamber base 12; the tube propulsion machine cutter head 4 is at the front end of the chamber body. In contact with the pipe section 5 of the pipe roof;
The reach chamber pedestal 12 is mounted on a pipe propulsion machine arrival cradle 13; the front chamber 7 and the arrival port pipe 6 are solidified through bolts; the pipe propulsion machine cradle 13 is a pipe roof construction work well 1 Provided between the side wall and the reinforced concrete underground continuous wall 2; one end of the pressure relief pipe 10 is connected to the rear chamber 9, and a pressure relief pipe valve 11 is provided on the pressure relief pipe 10, and the other end of the pressure relief pipe 10. Is connected to the muddy water tank 14; a well-shaped rib plate 16 is provided on the end surface of the rear chamber 9, a viewing window 15 is provided on the top of the end surface of the rear chamber 9, and a drainage hole 18 is provided on the bottom of the end surface of the rear chamber 9; Bolt holes 17 are provided uniformly and symmetrically on the end face of the chamber 9; a front chamber reinforcing rib plate 19 is welded to the outer periphery of the front chamber 7; A center chamber reinforcing rib plate 20 is welded to the outer periphery of the chamber 8; a wire brush type water blocking material 22 is provided on the chamber body between the access port pipe 6 and the front chamber 7; A rubber waterproofing material 23 is provided on the chamber body between them; a preliminary grout hose 21 is provided on the chamber body between the inlet pipe 6 and the wire brush type water stopping material 22 and the wire brush type water stopping material 22 and the rubber water stopping material. It is provided on the chamber body between the material 23.

  The flow of the reaching method of the mud balance pipe propulsion machine for high water pressure is as follows.

  S1: As shown in FIG. 1, after assembling the front chamber 7, the center chamber 8, and the rear chamber 9 in this order on the tube propulsion device arrival stand 13, they are connected to the arrival port tube 6 with bolts.

  S2: Fill the reaching part chamber with clean water from the pressure relief pipe 10, inspect the airtightness of the reaching part chamber, check for water leakage / leakage, repair it by tightening bolts, replacing the joint rubber packing, etc. The water in the reaching section chamber is discharged until it is empty, and the valve 11 of the pressure relief pipe is opened to fill mud balance mud.

  S3: The cutter head posture is adjusted according to the survey result before the tube propulsion device 4 arrives, and the tube propulsion device 4 reaches the reaching section chamber in a good posture.

  S4: The excavation speed of the pipe propulsion unit 4 is controlled to within 1 cm / min, the speed is reduced, the mine-portion unreinforced concrete 3 is mirror-cut to penetrate into the reaching part chamber, and the valve 11 of the pressure relief pipe is closed.

  S5: The entire pipe propulsion unit 4 enters the arrival designation position of the reaching section chamber, drains the muddy water in the chamber, cleans the mud pipe, and stops the operation of the pipe propulsion unit 4.

  S6: As shown in FIG. 3, the preliminary grout hose 21 is injected with polyurethane resin between the two layers of the water stop material to stop the water (the preliminary grout hose has three positions: directly above the front chamber, lower left and lower right. The grout uses a small pneumatic grout pump, and is first injected into the lower auxiliary grout hose and then into the upper auxiliary grout hose. The speed is as slow as possible, avoiding grout spills, connecting polyurethane resin and wire brush together to form one piece, preventing sediment spills in the formation, and blocking the water system communication between front chamber 7 and center chamber 8 .

  S7: After the polyurethane resin solidifies, the water stop effect is inspected, the preliminary grout hose is opened, the grout conduit is crazed into the chamber with a reinforcing bar, and if there is no water immersion, the access port pipe can be grouted; If there is, inject the polyurethane resin into the flooded area.

  S8: Inject muddy water from the auxiliary grout hose on the inlet pipe 6 (the auxiliary grout hose is arranged at three positions, directly above the inlet pipe, lower left and lower right, and arranged at 120 degrees in the circumferential direction); , Using a hydraulic grouting pump, first inject into the auxiliary grout hose on one side, open the auxiliary grout hose on the other side, close the grout hose when the grout liquid flows out from the auxiliary grout hose on the other side, and Open the auxiliary grout hose and close the auxiliary grout hose when the grouting liquid flows out; if the grout pressure is excessive, grout in place of the other auxiliary grout hose and between the outer wall of the pipe section and the inlet pipe The gap is filled with the grout liquid, and the communication between the front chamber 7 and the inlet pipe 6 and the water in the formation is closed.

  S9: Check the grouting effect after the mud has solidified, open the preliminary grouting hose, grouting the grouting pipe to the inside of the arrival port, and if there is no water, the chamber can be opened and the reaching work can be done; Inject muddy water into the flooded area.

  S10: After passing the inspection of the grouting effect, the mud hole 18 is opened to discharge the muddy water in the chamber, the rear cover is opened, and the chamber is directly checked for leakage or inundation. The upper half of the chamber 8 and the rear chamber 9 are disassembled, the muddy water and gravel in the chamber are cleaned, and when the pipe propulsion unit 4 is pulled up, the lower semicircle is immediately dismantled.

  S11: Water injection is stopped by injecting a two-component grout into the preliminary sheath pipe position in the pipe section 5 of the first and second sections after the pipe propulsion unit 4, and the communication between the arrival pipe 6 and the water in the formation is completely cut off. After dismantling the grout, you can start dismantling the wiring and piping in the pipe.

  S12: As shown in FIG. 4, after the two-component grout is solidified, the water pipe is opened to inspect the water-stopping effect, and grouted to a part where the water has been submerged; The ring is disassembled, and the gap between the tube section 5 and the arrival port tube 6 is immediately closed with a steel plate.

  S13: After dismantling all the wiring and piping in the pipe, mud substitution grout is performed to complete the reaching operation.

DESCRIPTION OF SYMBOLS 1 Pipe roof construction work pit 2 Reinforced concrete underground continuous wall 3 Unreinforced concrete underground continuous wall 4 Pipe propulsion machine cutter head 5 Pipe roof pipe section 6 Reaching port pipe 7 Front chamber 8 Center chamber 9 Rear chamber 10 Pressure relief pipe DESCRIPTION OF SYMBOLS 11 Valve of pressure relief pipe 12 Reaching part chamber base 13 Pipe propulsion machine arrival stand 14 Muddy water tank 15 Viewing window 16 I-shaped rib plate 17 Bolt hole 18 Drain hole 19 Front chamber reinforcing rib plate 20 Center chamber reinforcing rib plate 21 Preliminary Grout hose 22 Wire brush type water stop material 23 Rubber water stop material 24 Steel plate for closing

Claims (2)

A high pressure hydraulic mud balance pipe propulsion unit that includes a pipe propulsion unit cutter head (4), an arrival port pipe (6), a front chamber (7), a center chamber (8), and a rear chamber. (9), pressure relief pipe (10), pressure relief pipe valve (11), reaching chamber chamber base (12), pipe propulsion machine reaching base (13), mud tank (14), viewing window (15), Well-shaped rib plate (16), bolt hole (17), drainage hole (18), front chamber reinforcing rib plate (19), center chamber reinforcing rib plate (20), spare grout hose (21), wire brush type stopper A water material (22) and a rubber waterproofing material (23),
The front chamber (7), the center chamber (8), and the rear chamber (9) are connected in sequence to form a reaching portion chamber body, and the chamber body is mounted on the reaching portion chamber base (12). The tube propellant cutter head (4) is provided at the front end of the chamber body and contacts the tube section (5) of the pipe roof;
The reach chamber pedestal (12) is mounted on the tube propulsion device arrival cradle (13), and the front chamber (7) and the arrival port tube (6) are solidified through bolts; A cradle (13) is provided between the side wall of the pipe roof work pit (1) and the underground continuous wall (2) of reinforced concrete; one end of the pressure relief pipe (10) is connected to the rear chamber (9). The pressure relief pipe valve (11) is provided on the pressure relief pipe (10), and the other end of the pressure relief pipe (10) is joined to the mud tank (14); the rear chamber (9) The well-shaped rib plate (16) is provided on the end surface of the rear chamber, the viewing window (15) is provided on the top of the end surface of the rear chamber (9), and the mud holes (18 ); Uniform bolt holes (17) on the end face of the rear chamber (9) Provided symmetrically; the front chamber reinforcing rib plate (19) is welded to the outer periphery of the front chamber (7); the center chamber reinforcing rib plate (20) is welded to the outer periphery of the center chamber (8). The wire brush type water blocking material (22) is provided on the chamber body between the access port pipe (6) and the front chamber (7); the front chamber (7) and the center chamber ( 8) A rubber water stop material (23) is provided on the chamber body between the auxiliary grout hose (21) and the wire brush type water stop material (22). A reaching portion of a high water pressure compatible mud balance pipe propulsion device provided on the chamber body and on the chamber body between the wire brush-type water-stopping material (22) and the rubber water-stopping material (23). apparatus. It is a high water pressure compatible mud balance pipe propulsion machine reaching construction method, and the flow of the construction method is as follows,
S1: After assembling the front chamber (7), the center chamber (8), and the rear chamber (9) in this order on the tube propulsion machine arrival cradle (13), it is connected to the arrival port pipe (6) with bolts.
S2: Fill the reach chamber from the pressure relief pipe (10) with clean water, inspect the air tightness of the reach chamber, check for water leakage / leakage, repair by tightening bolts, replacing the joint rubber packing, etc. , After passing, drain the water in the reaching section chamber until empty, open the valve (11) of the pressure relief pipe to fill mud balance mud water,
S3: The cutter head posture is adjusted according to the survey result before reaching the pipe propulsion device (4), and the pipe propulsion device (4) reaches the reaching portion chamber in a good posture,
S4: The excavation speed of the pipe propulsion unit (4) is controlled to within 1 cm / min, decelerated, the mine-portion unreinforced concrete (3) is mirror-cut and penetrated into the reaching part chamber, and the pressure relief pipe Close the valve (11)
S5: The pipe propulsion device (4) as a whole enters the arrival designated position of the reaching section chamber, drains the muddy water in the chamber, cleans the muddy water pipe, stops the operation of the pipe propulsion device (4),
S6: The preliminary grout hose (21) is injected with polyurethane resin between the two layers of the water stop material to stop water (the preliminary grout hose is arranged at three positions, directly above the front chamber, lower left and lower right, The grout uses a small pneumatic grout pump, and first injects into the lower auxiliary grout hose and then into the upper auxiliary grout hose, and the grout speed during grout is as much as possible. Slowly avoid grouting outflow, fully connect polyurethane resin and wire brush to form one body, prevent sediment outflow in the formation, block the water system communication between front chamber (7) and center chamber (8) ,
S7: After the polyurethane resin solidifies, the water stop effect is inspected, the preliminary grout hose is opened, the grout conduit is crazed into the chamber with a reinforcing bar, and if there is no water immersion, the access port pipe can be grouted; If there is water, inject polyurethane resin into the water
S8: Muddy water from the preliminary grout hose on the arrival port pipe (6) (the preliminary grout hose is disposed at three positions, directly above, lower left and lower right of the arrival port pipe, and is arranged at 120 degrees in the circumferential direction) When grouting, use a hydraulic grout pump, first inject into the spare grout hose on one side, open the spare grout hose on the other side, and when the grout liquid flows out from the spare grout hose on the other side, Close the hose and open the upper auxiliary grout hose and close the auxiliary grout hose when the grouting liquid flows out; if the pressure of the grout is excessive, grout instead of the other auxiliary grout hose The gap between the access port pipe is filled with grout liquid, the front chamber (7), the access pipe (6) and the water in the formation are blocked,
S9: After the muddy water solidifies, the grout effect is inspected, the preliminary grout hose is opened, the grout pipe is sprinkled into the arrival port pipe, and if there is no water immersion, the chamber can be opened and the reaching operation can be performed; If there is, pour muddy water into the flooded area,
S10: After passing the inspection of the grouting effect, the mud hole (18) is opened to discharge the muddy water in the chamber, the rear cover is opened, and the chamber is checked directly for the presence of water leakage or inundation, and there is no water leakage. When dismantling the upper half of the center chamber (8) and rear chamber (9), cleaning the muddy water and gravel in the chamber and pulling up the pipe propulsion unit (4), the lower half is immediately dismantled. And
S11: A two-component grout is injected into the preliminary sheath pipe position in the pipe section (5) of the first and second sections after the pipe propulsion device (4) to stop the water, and the inlet pipe (6) is completely stopped. And disconnecting the water in the formation; after the completion of the grout, the disassembly work of the wiring and piping in the pipe can be started,
S12: After the two-component grout solidifies, open the Saya tube to inspect the water-stopping effect, grout to the part where the water is flooded; after the grout effect meets the requirements, disassemble the front chamber and the ring, immediately Close the gap between the tube section (5) and the access port tube (6),
S13: A high water pressure compatible mud balance pipe propulsion machine reaching method characterized in that after all the wiring and piping in the pipe are dismantled, mud substitution grout is performed and the reaching work is completed.

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