WO2021098285A1 - Method and apparatus for segmented obstacle removal of existing in-situ tube well - Google Patents

Abstract

The present invention relates to the field of underground obstacle removal, and provides a method and apparatus for segmented obstacle removal of an existing in-situ tube well. The apparatus can move up and down along with a flexible high-pressure pipe in an in-situ tube well by using a housing, a water jet cutter bit, a motor drive device, a rotary disc, a rotating pipeline and a connection device, and therefore the water jet cutter bit can move to positions different in depth in the in-situ tube well, and after a booster pump is opened and water in a water storage tank is boosted by the booster pump, water sequentially passes through the flexible high-pressure pipe, the connection device and the rotating pipeline, and then is jetted out by means of the water jet cutter bit so as to implement high-pressure water cutting on the in-situ tube well, and therefore the in-situ tube well can be cut into pieces, parts of a tube segment can be dug out by using the device, and obstacle removal for the in-situ tube well is realized, and furthermore use of corresponding devices of a large vibration pile driver extractor, a full rotary drill and the like is avoided, and therefore the apparatus reduces influence to environment, is convenient, quick and safe to operate, and solves the problems that large influence is caused to the surrounding environment, high production cost is consumed and the like in the underground obstacle removal process.

Description

Existing in-situ tube well segmentation clearing method and device Technical field

The invention belongs to the field of underground obstacle clearance, and in particular relates to an existing in-situ tube well segmented obstacle clearance method and device.

Background technique

The removal of underground obstacles in the construction site is inevitable during the construction process, and it is also complicated. At the same time, the location, shape, size, and depth of underground obstacles are also uncertain. Before the construction of the foundation pit project, it is necessary to remove and break the underground unknown obstacles in the construction site to prevent a large number of obstacles from appearing during the construction of the enclosure structure and affecting the construction progress.

At present, there are only two methods to remove obstacles: (1) Vibratory pile sinking and pulling machine: For obstacles in areas with high environmental requirements, we usually use the vibrating pile sinking and pulling machine to remove obstacles, which is simple, quick and effective. , Construction noise is small, but there is vibration; it is a common way for us to clear obstacles; (2) 360-degree azimuth drilling rig clearing: for underground obstacles with large cross-sections and deep buried depths, such as borehole pouring Obstacles, such as piles, are more complicated, and the rotating cylinder pile puller is used to remove them, and the corresponding mature technology has been formed, and the cost is high.

At present, there is no better method for removing underground obstacles such as in-situ tube wells with a deeper burial and a small cross-section. The existing open-cut method is used for construction. Due to the deep underground obstacles, the impact on the environment is large, and the construction effect is poor; if the 360-degree azimuth drilling rig technology is used to clear the obstacle, the cross section of the obstacle is small, and the construction cost of this method is high. ,Uneconomical.

Summary of the invention

The purpose of the present invention is to provide an existing in-situ tube well segmentation clearing method and device, which has practicability and maneuverability, avoids the use of large-scale vibratory pile sinking and pulling rigs and azimuth drilling rigs, and reduces environmental impact It is easy to operate, fast and safe, and solves the problems of large surrounding environmental impact and large production costs in the process of removing underground obstacles.

To solve the above technical problems, the present invention provides the following technical solutions:

An existing in-situ tube well segmentation clearing device includes a portable water cutting equipment for cutting in-situ tube wells. The portable water cutting equipment includes a water storage tank, a booster pump, a flexible high-pressure pipe, a housing, and a water A cutter head, a motor transmission device, a rotating disc, a rotating pipe, and a connecting device. One end of the flexible high-pressure pipe is connected to a booster pump, and the other end of the flexible high-pressure pipe extends into the housing and connects to the rotating pipe The upper end of the rotating pipe is connected by a connecting device, the lower end of the rotating pipe is provided with the waterjet cutter head, the flexible high-pressure pipe is fixedly connected with the connecting device, the rotating pipe can rotate relative to the flexible high-pressure pipe, the motor The transmission device drives the rotating disc to rotate, and the rotating disc is fixedly sleeved on the rotating pipe. After the water in the water storage tank is pressurized by the booster pump, it sequentially passes through the flexible high-pressure pipe, the connecting device, and the rotating pipe. After being sprayed out by the waterjet cutter head, the casing, the waterjet cutter head, the motor transmission device, the rotating disk, the rotating pipe, and the connecting device can follow the flexible high-pressure pipe to move up and down in the in-situ tube well.

Preferably, in the above-mentioned existing in-situ tube well segmented obstacle clearing device, the portable water cutting equipment further includes a walking wheel, and the walking wheels are respectively arranged around the housing so that the housing can walk through The wheel runs up and down along the inner wall of the in-situ tube well.

Preferably, in the above-mentioned existing in-situ tube well segmented clearing device, the connecting device is a universal device.

Preferably, in the above-mentioned existing in-situ tube well segmented clearing device, the universal device includes a fixed part and a rotating part, the rotating part is coaxially connected with the fixed part, and the rotating part can be opposite to each other. The fixed part rotates, the fixed part is fixedly connected to the flexible high-pressure pipe, the rotating part is fixedly connected to the rotating pipe, and the high-pressure liquid in the flexible high-pressure pipe can pass through the fixed part and the rotating part to be transmitted to Rotate the pipe.

Preferably, in the above-mentioned existing in-situ tube well segmented clearing device, the connecting device includes a connecting seat, and a through hole penetrating up and down is provided in the connecting seat. The upper end is sealed to the flexible high-pressure pipe, and the lower end of the through hole of the connecting seat is provided with a bearing. The bearing includes an inner ring, an outer ring, and a retainer that is positioned between the inner ring and the outer ring. The upper end of the rotating pipe is sealed and fixedly connected with the inner ring of the bearing, and the outer ring of the bearing is fixedly connected with the connecting seat.

Preferably, in the above-mentioned existing in-situ tube well segmented clearing device, the flexible high-pressure pipe is driven to move up and down via a winch.

Preferably, in the above-mentioned existing in-situ tube well segmented obstacle clearing device, the motor transmission mechanism includes a motor and a worm, the motor drives the worm to rotate, the worm drives the rotating disc to rotate, and the The worm and the rotating disk constitute a worm gear transmission pair.

The invention also discloses an existing in-situ tubular well segmentation clearing method, which includes the following steps:

Step 1: Remove the soil covering the upper part of the in-situ tube well, so that the top of the in-situ tube well is exposed to the soil;

Step 2: Use the existing in-situ tube well as described above to cut the in-situ tube well into several partial pipe sections from bottom to top;

Step 3: Use a rotary drilling rig to dig out the partial pipe sections from top to bottom.

It can be seen from the technical solutions disclosed above that, compared with the prior art, the beneficial effects of the present invention are as follows:

The existing in-situ tube well segmented obstacle clearing device provided by the present invention can follow the flexible high-pressure pipe in the original position through the housing, the waterjet cutter head, the motor transmission device, the rotating disc, the rotating pipeline, and the connecting device. The position tube well moves up and down. Therefore, the waterjet cutter head can be moved to different depth positions of the in-situ tube well, and the booster pump is turned on. After the water in the water storage tank is pressurized by the booster pump, it passes through the flexible high-pressure pipe, After connecting the device and rotating the pipe, it is sprayed out by the waterjet cutter head, and the in-situ tube well is subjected to high-pressure water cutting, so that the in-situ tube well can be cut into partial pipe sections that can be dug out with a machine, so as to realize the in-situ tube well clearance , It can avoid the use of large-scale vibratory pile sinking and pulling rigs and related equipment such as azimuth drilling rigs, reducing the impact on the environment, convenient, fast, and safe to operate, solving the problem of large surrounding environmental impact and greater production during the process of removing underground obstacles Difficulties such as cost.

Description of the drawings

Figure 1 is a schematic structural diagram of an existing in-situ tubular well segmented clearing device according to an embodiment of the present invention;

2 is a schematic diagram of the installation of a waterjet cutter head according to an embodiment of the present invention;

Figure 3 is a top view of Figure 2;

4 is a schematic diagram of the structure of a connecting device in an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of step three of an existing in-situ tube well segmented clearing method according to an embodiment of the present invention.

In the picture: 1-in-situ tube well, 2-flexible high-pressure pipe, 3-shell, 4-waterjet cutter head, 5-motor transmission device, 6-rotating disc, 7-rotating pipeline, 8-connection device, 81- Connecting seat, 82-bearing, 9-walking wheel, 10-portable box, 11-rotary drilling rig.

Detailed ways

Hereinafter, the present invention will be further described in detail with reference to the drawings and specific embodiments. Hereinafter, the technical content and features of the present invention will be described in detail by the listed embodiments in combination with the accompanying drawings. It should be additionally noted that the drawings are in a very simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "up" and "down" mentioned below are consistent with the directions of the upper and lower sides of the drawings, but this cannot be a limitation of the technical solution of the present invention.

Example one

Please refer to Figures 1 to 5, this embodiment discloses an existing in-situ tube well segmented clearing device, including a portable water cutting equipment for cutting in-situ tube well 1, the portable water cutting equipment includes water storage Tank, booster pump, flexible high-pressure pipe 2, housing 3, waterjet cutter head 4, motor transmission device 5, rotating disc 6, rotating pipe 7, and connecting device 8. One end of the flexible high-pressure pipe 2 is connected to the booster Pump connection. The other end of the flexible high-pressure pipe 2 extends into the housing 3 and is connected to the upper end of the rotating pipe 7 through a connecting device 8. The lower end of the rotating pipe 7 is provided with the waterjet cutter head 4, The flexible high-pressure pipe 2 is fixedly connected to the connecting device 8, the rotating pipe 7 can rotate relative to the flexible high-pressure pipe 2, the motor transmission device 5 drives the rotating disk 6 to rotate, and the rotating disk 6 is fixed. It is sleeved on the rotating pipe 7, and the water in the water storage tank is pressurized by the booster pump, and then is sprayed out through the waterjet cutter head 4 through the flexible high-pressure pipe 2, the connecting device 8, and the rotating pipe 7 in sequence. The housing 3, the waterjet cutter head 4, the motor transmission device 5, the rotating disk 6, the rotating pipe 7, and the connecting device 8 can follow the flexible high-pressure pipe 2 to move up and down in the in-situ pipe well 1.

The existing in-situ tube well segmented obstacle clearing device provided by this embodiment can follow the said housing 3, waterjet cutter head 4, motor transmission device 5, rotating disk 6, rotating pipe 7, and connecting device 8 The flexible high-pressure pipe 2 moves up and down in the in-situ tube well 1, therefore, the waterjet cutter head 4 can be moved to different depth positions of the in-situ tube well 1, and the booster pump is turned on, and the water in the water storage tank is pressurized After the pump is pressurized, it passes through the flexible high-pressure pipe 2, the connecting device 8, and the rotating pipe 7 in turn, and then is sprayed out by the waterjet cutter head 4 to perform high-pressure water cutting on the in-situ tube well 1, so that the in-situ tube well 1 can be cut into individual roots The partial pipe section excavated by a machine can be used to clear the obstacles of the pipe well 1 in situ.

In order to make the waterjet cutter head 4 installed on the housing 3 walk stably along the axial direction of the in-situ tube well 1 and facilitate the cutting of the in-situ tube well 1, preferably, in the above-mentioned existing in-situ tube well segmented clearing device, The portable water cutting equipment also includes a walking wheel 9, and the walking wheels 9 are respectively arranged around the housing 3, so that the housing 3 can walk up and down along the inner wall of the in-situ tube well 1 through the walking wheel 9 .

Preferably, in the above-mentioned existing in-situ tubular well segmented clearing device, the connecting device 8 includes a connecting seat 81, and a through hole that penetrates up and down is provided in the connecting seat 81. The upper end of the through hole is hermetically connected to the flexible high-pressure pipe 2, and the lower end of the through hole of the connecting seat 81 is provided with a bearing 82. The bearing 82 includes an inner ring, an outer ring, and an inner ring and an outer ring. The upper end of the rotating pipe 7 is sealed and fixedly connected with the inner ring of the bearing, and the outer ring of the bearing is fixedly connected with the connecting seat 81.

Of course, the connecting device 8 can also be a universal device, similar to the principle of a fountain rotating nozzle. Specifically, the universal device includes a fixed part and a rotating part, the rotating part is coaxially connected with the fixed part, and the rotating part can rotate relative to the fixed part, and the fixed part is connected to the flexible high pressure The tube 2 is fixedly connected, the rotating part is fixedly connected to the rotating pipe 7, and the high-pressure liquid in the flexible high-pressure pipe 2 can be transferred to the rotating pipe 7 after passing through the fixed part and the rotating part.

Preferably, in the above-mentioned existing in-situ tube well segmented clearing device, the flexible high-pressure pipe 2 is driven to move up and down via a hoist.

Preferably, in the above-mentioned existing in-situ tube well segmented obstacle clearing device, the motor transmission mechanism includes a motor and a worm, the motor drives the worm to rotate, and the worm drives the rotating disk 6 to rotate, so The worm and the rotating disk 6 constitute a worm gear transmission pair, so as to realize the transmission of the power of the motor output shaft to the rotating disk 6, thereby driving the rotating pipe 7 and the waterjet cutter head 4 installed on the rotating pipe 7 to rotate.

Please continue to refer to Figures 1 to 5, the present invention also discloses an existing in-situ tubular well segmented clearing method, including the following steps:

Step 1: Remove the soil covering on the upper part of the in-situ tube well 1 so that the top of the in-situ tube well 1 exposes the soil;

Step 2: Use the existing in-situ tube well as described above to cut the in-situ tube well 1 into several partial pipe sections from bottom to top;

Step three, as shown in Fig. 5, use the rotary drilling rig 10 to dig out the partial pipe sections from top to bottom.

The present invention provides an existing in-situ tubular well segmented clearing method, which uses the existing in-situ tubular well segmented clearing device as described above to cut the in-situ tubular well 1 into several partial pipe sections from bottom to top; The segmental clearing device for the tube well is a portable water cutting equipment whose weight is less than 90 kilograms and can be controlled by two people, which greatly improves the flexibility and portability of the water cutting system and is not restricted by the working environment; the metal tube well is divided After the segment cutting is completed, use the sleeve rotary drilling of the rotary drilling rig to drill the obstacles after the segment. The length of the segment should be the same size as the height of the sleeve. The invention has strong practicability and convenient construction and operation. Using waterjet cutting technology, the obstacles are removed in sections through the sleeve of the rotary drilling rig. The construction process has little impact on the surrounding environment.

The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes or modifications made by a person of ordinary skill in the field of the present invention based on the above disclosure shall fall within the protection scope of the claims.

Claims (8)

An existing in-situ tube well segmented obstacle clearing device, which is characterized in that it comprises a portable water cutting equipment for cutting in-situ tube wells. The portable water cutting equipment includes a water storage tank, a booster pump, a flexible high-pressure pipe, The housing, the waterjet cutter head, the motor transmission device, the rotating disc, the rotating pipe, and the connecting device. One end of the flexible high-pressure pipe is connected to the booster pump, and the other end of the flexible high-pressure pipe extends into the housing and The upper end of the rotating pipe is connected by a connecting device, the lower end of the rotating pipe is provided with the waterjet cutter head, the flexible high-pressure pipe is fixedly connected with the connecting device, and the rotating pipe can rotate relative to the flexible high-pressure pipe , The motor transmission device drives the rotating disk to rotate, the rotating disk is fixedly sleeved on the rotating pipe, and the water in the water storage tank is pressurized by the booster pump, and then passes through the flexible high-pressure pipe and the connection The device and the rotating pipe are sprayed out by the waterjet cutter head. The housing, the waterjet cutter head, the motor transmission device, the rotating disc, the rotating pipe, and the connecting device can follow the flexible high-pressure pipe in the in-situ pipe. Move up and down in the well. The existing in-situ tube well segmented clearing device according to claim 1, wherein the portable water cutting equipment further comprises a walking wheel, and the walking wheels are respectively arranged around the housing so that the housing The body can walk up and down along the inner wall of the in-situ tube well through a traveling wheel. The existing in-situ tubular well segmented clearing device according to claim 1, wherein the connecting device is a universal device. The existing in-situ tubular well segmented clearing device according to claim 3, wherein the universal device includes a fixed part and a rotating part, the rotating part is coaxially connected with the fixed part, and the The rotating part can rotate relative to the fixed part, the fixed part is fixedly connected with the flexible high-pressure pipe, the rotating part is fixedly connected with the rotating pipe, and the high-pressure liquid in the flexible high-pressure pipe can pass through the fixed part and rotate The part is then transferred to the rotating pipeline. The existing in-situ tubular well segmented clearing device according to claim 1, wherein the connecting device includes a connecting seat, and a through hole is provided in the connecting seat. The upper end of the through hole is in a sealed connection with the flexible high-pressure pipe, and the lower end of the through hole of the connecting seat is provided with a bearing, and the bearing includes an inner ring, an outer ring, and a ring arranged between the inner ring and the outer ring. The upper end of the rotating pipe is sealed and fixedly connected with the inner ring of the bearing, and the outer ring of the bearing is fixedly connected with the connecting seat. The existing in-situ tube well segmented clearing device according to claim 1, wherein the flexible high-pressure pipe is driven to move up and down via a hoist. The existing in-situ tube well segmented clearing device according to claim 1, wherein the motor transmission mechanism includes a motor and a worm, the motor drives the worm to rotate, and the worm drives the rotating disk When rotating, the worm and the rotating disk constitute a worm gear transmission pair. An existing in-situ tube well segmentation clearing method is characterized in that it comprises the following steps: Step 1: Remove the soil covering the upper part of the in-situ tube well, so that the top of the in-situ tube well is exposed to the soil; Step 2: Use the existing in-situ tube well as described in any one of claims 1 to 7 to cut the in-situ tube well into several partial pipe sections from bottom to top; Step 3: Use a rotary drilling rig to dig out the partial pipe sections from top to bottom.

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