CN113775823B - Construction method of underwater pipe-taking tool - Google Patents

Abstract

The application discloses a construction method of an underwater pipe-taking tool, which comprises the following steps: removing a circuit pipeline and components in the pipe jacking tool: (2) sealing the blank of the pipe jacking tool device; (3) plugging the back of the jacking pipe and injecting water into the pipeline; (4) excavating a pipe jacking tool on water; (5) diver cuts the pipe-jacking tool underwater; and (6) hoisting the pipe jacking tool device by the water crane ship. The construction method can solve the problems of large investment, large construction difficulty, low safety and the like to a great extent, and achieves the effects of small investment, small construction difficulty and high safety.

Description

Construction method of underwater pipe-taking tool

Technical Field

The invention relates to the technical field of pipe jacking construction, in particular to a construction method of an underwater pipe jacking tool.

Background

Along with the rapid development of modern infrastructure, pipe jacking construction is more and more used in the construction process, pipe jacking construction is underground and underground construction, only needs to arrange an originating well and a receiving well, and is small in occupied area, small in influence on ground facilities, less in construction pollution, high in civilized construction degree and much shorter in construction period compared with slotting construction, but the originating and receiving of pipe jacking are still procedures with certain difficulty compared with each other, particularly in special complex geological environments such as underwater pipe jacking, the underwater receiving of pipe jacking tools is a procedure which is difficult and has larger risk, and therefore the construction method of the underwater pipe jacking tools can perfectly solve the problem.

At present, a construction scheme of receiving a pipe jacking tool in water under normal conditions is that a cofferdam is arranged in water, and a pipe jacking receiving well is arranged after water in the cofferdam is drained. Or the open caisson is directly carried out in water to be used as a jacking pipe receiving working well, and the two schemes have the advantages of complex construction procedures, high difficulty, high risk, long construction period and high construction cost.

Disclosure of Invention

The invention aims to provide a construction method of an underwater pipe-taking tool, which solves the defects in the prior art.

The technical problems to be solved by the invention are realized by the following technical scheme:

a construction method of an underwater pipe-taking tool, the method comprising the steps of:

(1) Removing the circuit pipeline and components in the pipe jacking tool:

(2) Sealing and blocking a blank of the pipe jacking tool;

(3) Plugging the back of the jacking pipe and injecting water into the pipeline;

(4) Excavating a pipe jacking tool on water;

(5) The diver cuts the pipe jacking tool underwater;

(6) The water crane ship lifts the pipe jacking tool.

Preferably, before the step (1), the method further comprises: the pipeline is jacked to a preset position, the elevation and the position of the tail end of the jacking pipe are rechecked, the jack is dismantled, the power supply is turned off, and the slurry pump is turned off.

Preferably, the step (1) specifically includes:

and (3) entering the pipe jacking tool by a professional operator to remove the pipe jacking machine head circuit board and the electric cable, removing the mud pipe of the mud pump, and extracting the mud pipe section by section from the pipeline until the mud pipe is completely extracted.

Preferably, the step (2) specifically includes:

(21) After removing the circuit pipeline and components in the pipe jacking tool, the traction air compressor injects fresh air into the pipe, transports the blank plate to a designated position, and traction wires and welding positions marked by red paint of the welding machine;

(22) After the jacking pipe is jacked into the preset position, the auxiliary group pipeline of the jacking pipe equipment is withdrawn, the air compressor is started, fresh air is continuously injected into the pipe, an operator pulls the air outlet pipe of the air compressor into the jacking pipe pipeline to conduct jacking pipe sealing plate welding, and the jacking pipe sealing plate adopts a mode of multiple welding.

Preferably, the step (3) specifically includes:

(31) Removing wires and cables in a pipeline before construction, checking welding seams of the pipeline, and then installing a blank plate or a gate valve;

(32) And (3) plugging the steel pipe at the tail end of the jacking pipe of the water taking pump room by adopting a blind plate or a valve, namely welding a DN200 water injection pipe with a flange plate on a pipeline at the tail end of the water taking pump room, injecting water into the pipeline after the welding is finished, and tightly plugging a DN200 water injection hole by using a flange plate after the jacking pipe is filled with water.

Preferably, the step (4) specifically includes:

(41) Before construction, the position and the elevation of a tool device are accurately measured on a dredger, and the dredger is fixed after being opened to a designated position;

(42) According to the jacking distance of the jacking pipe, the position of the jacking pipe tool is determined, then a water dredger is used for digging a groove, the contour of the jacking pipe tool is dug out, the position of the jacking pipe tool is accurately determined by the water from a diver, and the working surface of the bottom of the jacking pipe tool is required to be cut underwater by adopting soil attached to the high-pressure water gun to wash the jacking pipe tool underwater and the later period.

Preferably, the step (5) specifically includes:

(51) The method comprises the steps that the peripheral dredge condition of a tool device is required to be retested before construction, a diver submerges to the tool device to weld a lifting ring, and the diver is required to use a high-pressure water gun to wash out soil attached to the pipe jacking tool device under water, and the working face of the bottom of the pipe jacking tool device is required to be cut under water in the later period;

(52) After the diver confirms the specific position of the pipe jacking tool, and excavates the working face of the cutting pipe jacking tool, the diver is matched with a water sling to hoist and fix the pipe jacking tool to be cut, and then the diver performs cutting operation on a pipe with the tail of 50cm-100cm of the pipe jacking tool to divide the pipe jacking tool and the pipeline.

Preferably, the step (6) specifically includes:

(61) Before construction, checking the welded hoisting rings of the tool, the anchoring fixity of the crane ship and the rechecking of the steel wire rope of the crane ship;

(62) After the pipe jacking tool is cut, the diver and the workers on the hoisting ship confirm that the pipe jacking tool is firmly hoisted again, the unhooking risk is avoided, after the diver is confirmed to be free of errors, the diver is separated from the cutting working face, and after the diver is separated from the working face, the hoisting ship slowly lifts the hook, and the pipe jacking tool is hoisted to the hoisting ship.

Preferably, the construction method of the underwater pipe-taking tool further comprises the following steps:

(7) The circular use of push pipe tool ware: after the underwater pipe jacking tool is cut, the underwater pipe jacking tool is transported by a transport ship and hung to a transport vehicle and then dried to a pipe jacking tool manufacturer, and after the condition is confirmed, the dismantled components are reinstalled, so that the recycling of the pipe jacking tool is realized.

According to the construction method, a pipe jacking receiving well is not required to be arranged in water, a pipe jacking tool can be taken out by using divers and water mechanical equipment, the construction method is used for excavating earthwork around the pipe jacking tool according to positioning measurement and fine control of a water dredger, then the divers are assisted in the water to be matched with accurate positioning, after positioning is completed, the water dredger is used for hoisting and fixing the pipe jacking tool, the divers are used for cutting the pipe jacking tool, and then the water surface is hoisted. The construction method can solve the problems of larger investment, larger construction difficulty, lower safety and the like to a great extent, and realizes smaller investment, smaller construction difficulty and higher safety.

Drawings

Fig. 1 is a schematic view of a construction method of an underwater pipe-extracting tool of the present invention.

Wherein: 1-pipe jacking tool, 2-lifting points, 3-crane ships, 4-tool cutting points, 5-water lines, 6-underwater dredge directions and 7-steel pipes.

Detailed Description

The following detailed description of specific embodiments of the invention is provided to facilitate a further understanding of the invention.

Fig. 1 is a schematic view of a construction method of an underwater pipe-extracting tool of the present invention. As shown in the figure:

a construction method of an underwater pipe-taking tool comprises the following steps:

(1) Removing the inner circuit and components of the pipe jacking tool:

after the jacking process of the pipe jacking is finished, the main jack is firstly removed, the power supply is cut off, the slurry pump is shut down, a professional operator enters the pipe jacking tool to remove the circuit board and the electric cable of the pipe jacking machine head, the slurry pipe of the slurry pump is removed, and the slurry pipe is extracted section by section from the pipeline until the slurry pipe is completely extracted. Therefore, when the pipe jacking tool is excavated, water is prevented from rushing into the pipe jacking tool, and the tool components are soaked in the water for a long time, so that the damage is avoided.

(2) Sealing and blocking a sealing plate of a pipe jacking tool:

the push pipe sealing plate has the function of protecting the push tool from mud water in the cutting process of the tool, so that equipment in the tool is ensured to be intact, and the lower push pipe can be ensured to operate smoothly. Before the last jacking, the jacking pipe is positioned at the first pipe section, the preset position of the sealing plate in the pipe is determined, and meanwhile, a circle of 6mm reinforcing steel bars are welded on the periphery of the pipe wall outside the tool pipe, so that underwater cutting staff can smoothly determine the specific cutting position of the jacking pipe tool through a detection die, and the cutting is ensured to be rapid and accurate. Meanwhile, the welding position of the steel sealing plate is marked obviously by red paint in the pipe joint.

After the jacking pipe is jacked into the preset position, the auxiliary group pipeline of the jacking pipe equipment is withdrawn: pipeline such as inlet channel, outlet channel, components and parts open the air compressor machine, incessantly pour into fresh air into in the intraductal, and the operation personnel pulls the air compressor machine outlet duct to get into in the pipe jacking pipeline and carries out pipe jacking shrouding welding, and pipe jacking shrouding adopts the mode of welding in grades.

(3) Plugging the back of the jacking pipe and injecting water into the pipeline:

according to the construction condition of the follow-up pipeline, a blind plate or a valve is adopted for blocking the tail end steel pipe of the jacking pipe of the water taking pump room (DN 200 water injection pipe with flange pieces is welded on the pipeline at the end of the water taking pump room, the length of a short pipe is 20cm, water is injected into the pipeline after the welding is finished, and after the jacking pipe is filled with water, a flange blind plate is used for tightly blocking a DN200 water injection hole).

(4) The utility model discloses a push pipe tool ware excavates under water:

and determining the approximate position of the pipe jacking tool according to the specific meter number of jacking pipes, digging a groove by a water dredger, digging out the contour of the pipe jacking tool, accurately determining the position of the pipe jacking tool by the launching of a diver, and flushing soil attached to the pipe jacking tool and a working surface at the bottom of the pipe jacking tool in a later-stage underwater cutting mode by adopting a high-pressure water gun.

(5) An underwater cutting pipe jacking tool:

after a diver confirms the specific position of the pipe jacking tool 1 and excavates a working surface of the pipe jacking tool for cutting, the diver is matched with an overwater crane ship 3 (a sling ship), the pipe jacking tool to be cut is hoisted (a hoisting point 2) well, the pipe jacking tool is prevented from being deviated in the cutting process, the diver is injured, then the diver performs cutting operation on a steel pipe 7 with the tail of the pipe jacking tool being 50cm-100cm (a tool cutting point 4 is shown in fig. 1), and the pipe jacking tool and a pipeline are cut.

(6) The tool device for hoisting the pipe jacking on water comprises:

after the pipe jacking tool is cut, the diver and the workers on the hoisting ship confirm that the pipe jacking tool is firmly hoisted again, the unhooking risk is avoided, after the diver is confirmed to be free of errors, the diver is separated from the cutting working face, and after the diver is separated from the working face, the hoisting ship slowly lifts the hook, and the pipe jacking tool is hoisted to the hoisting ship.

(7) And finally, the pipe jacking tool taken out from the water is sent to a manufacturer for drying, and after the condition that no error exists, the removed components are reinstalled, so that the pipe jacking tool can work again.

The method breaks through the traditional dry method (comprising Larson steel sheet pile cofferdam, earth rock cofferdam and concrete receiving well) for taking the pipe jacking tool in rivers and lakes. The construction method of the underwater pipe-taking tool can solve the problems of large investment, large construction difficulty, low safety and the like to a great extent, and is small in investment, small in construction difficulty and high in safety.

Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited thereto, and that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The construction method of the underwater pipe-taking tool is characterized by comprising the following steps of:

(1) Removing the circuit pipeline and components in the pipe jacking tool:

(2) Sealing and blocking a sealing plate of a pipe jacking tool:

(21) After removing the circuit pipelines and components in the pipe jacking tool, drawing an air compressor to inject fresh air into the pipe, transporting a blank plate to a designated position, drawing a welding position marked by red paint on an electric wire and a welding machine, before jacking, determining the predetermined position of a sealing plate in the pipe at a first pipe joint, and welding a circle of 6mm steel bars outside the tool pipe along the periphery of the pipe wall, so that underwater cutting staff can smoothly determine the specific cutting position of the pipe jacking tool through a detection die, and cutting is ensured to be rapid and accurate;

(22) After jacking the pipe jacking device into a preset position, withdrawing an auxiliary pipeline of the pipe jacking device, starting the air compressor, continuously injecting fresh air into the pipe, and pulling an air outlet pipe of the air compressor into the pipe jacking pipeline by an operator to weld a pipe jacking sealing plate, wherein the pipe jacking sealing plate adopts a mode of multiple welding;

(3) Plugging the back of the jacking pipe and injecting water into the pipeline;

(4) Excavating a pipe jacking tool on water;

(5) The diver cuts the pipe-jacking tool under water:

(51) The method comprises the steps that the peripheral dredge condition of a tool device is required to be retested before construction, a diver submerges to the tool device to weld a lifting ring, and the diver is required to use a high-pressure water gun to wash out soil attached to the pipe jacking tool device under water, and the working face of the bottom of the pipe jacking tool device is required to be cut under water in the later period;

(52) After a diver confirms the specific position of the pipe jacking tool, and excavates a working surface of the cutting pipe jacking tool, the diver is matched with a water sling to hoist and fix the pipe jacking tool to be cut, and then the diver performs cutting operation on a pipe with the tail of 50cm-100cm of the pipe jacking tool to divide the pipe jacking tool and the pipeline;

(6) The water crane ship lifts the pipe jacking tool.

2. The method for constructing an underwater pipe-extracting tool as defined in claim 1, wherein said step (1) is preceded by the steps of: the pipeline is jacked to a preset position, the elevation and the position of the tail end of the jacking pipe are rechecked, the jack is dismantled, the power supply is turned off, and the slurry pump is turned off.

3. The construction method of an underwater pipe-extracting tool according to claim 1, wherein the step (1) is specifically:

and (3) entering the pipe jacking tool by a professional operator to remove the pipe jacking machine head circuit board and the electric cable, removing the mud pipe of the mud pump, and extracting the mud pipe section by section from the pipeline until the mud pipe is completely extracted.

4. The construction method of an underwater pipe-extracting tool according to claim 1, wherein the step (3) is specifically:

(31) Removing wires and cables in a pipeline before construction, checking welding seams of the pipeline, and then installing a blank plate or a gate valve;

(32) And (3) plugging the steel pipe at the tail end of the jacking pipe of the water taking pump room by adopting a blind plate or a valve, namely welding a DN200 water injection pipe with a flange plate on a pipeline at the tail end of the water taking pump room, injecting water into the pipeline after the welding is finished, and tightly plugging a DN200 water injection hole by using a flange plate after the jacking pipe is filled with water.

5. The construction method of an underwater pipe-extracting tool according to claim 1, wherein the step (4) is specifically:

(41) Before construction, the position and the elevation of a tool device are accurately measured on a dredger, and the dredger is fixed after being opened to a designated position;

(42) According to the jacking distance of the jacking pipe, the position of the jacking pipe tool is determined, then a water dredger is used for digging a groove, the contour of the jacking pipe tool is dug out, the position of the jacking pipe tool is accurately determined by the water from a diver, and the working surface of the bottom of the jacking pipe tool is required to be cut underwater by adopting soil attached to the high-pressure water gun to wash the jacking pipe tool underwater and the later period.

6. The construction method of an underwater pipe-extracting tool according to claim 1, wherein the step (6) is specifically:

(61) Before construction, checking the welded hoisting rings of the tool, the anchoring fixity of the crane ship and the rechecking of the steel wire rope of the crane ship;

(62) After the pipe jacking tool is cut, the diver and the workers on the hoisting ship confirm that the pipe jacking tool is firmly hoisted again, the unhooking risk is avoided, after the diver is confirmed to be free of errors, the diver is separated from the cutting working face, and after the diver is separated from the working face, the hoisting ship slowly lifts the hook, and the pipe jacking tool is hoisted to the hoisting ship.

7. The construction method of an underwater pipe-extracting tool according to claim 1, wherein the construction method of an underwater pipe-extracting tool further comprises:

(7) The circular use of push pipe tool ware: after the underwater pipe jacking tool is cut, the underwater pipe jacking tool is transported by a transport ship and hung to a transport vehicle and then dried to a pipe jacking tool manufacturer, and after the condition is confirmed, the dismantled components are reinstalled, so that the recycling of the pipe jacking tool is realized.

Images