Recyclable well wall structure and mounting method

Abstract

The invention discloses a recoverable well wall structure and an installation method. The device is characterized by comprising a well wall structure floral tube, an outer rib jet pipe, a jet hole channel, an outer rib jet pipe end a, an outer rib jet pipe end b, a threaded pressure-bearing cap, an inserting and riveting end A, a riveting and locking hole, an inserting and riveting end B, a riveting and locking pin, a pressure sealing ring, a jet hole channel screwed plug, a well bottom sealing plate, soil filtering gauze and a high-pressure water pump. Compared with the prior art, the recoverable well wall structure device has the advantages that the recoverable well wall structure device is integrally made of a steel material and can be recycled for multiple times, the service life is prolonged, corrosion is avoided, anti-corrosion paint can be sprayed on the surface, the recoverable well wall structure device can be connected section by section to serve as a filter type well wall structure of a tube well, and the recoverable well wall structure device is rapid and convenient to mount and dismount in the construction process; and transportation and storage are neat.

Description

Technical Field

[0001] The patent of this invention relates to the field of green environmental protection technology, and in particular to a recyclable well wall structure and installation method. Background Art

[0002] In areas with high groundwater levels, pipe well dewatering technology is used as a construction method to lower groundwater levels. By drilling holes on the surface and installing a filtering well wall structure, groundwater is pumped out of the well with the help of pumping equipment to achieve the purpose of lowering the groundwater level in the surrounding area. This technology has been widely used in construction projects such as construction engineering, tunnel construction, and foundation pit excavation, where groundwater levels need to be lowered. Through pipe well dewatering, the water layer pressure in the soil layer and the soil pressure on the retaining structure can be reduced, which can effectively reduce the risks of pipe bursts and collapse during construction, ensuring the safety of the construction process and the quality of the project.

[0003] In the actual design process of the project, it is often necessary to quickly lower the groundwater level in the site according to the progress characteristics of the project, so as to facilitate the subsequent earth excavation and civil construction. In this case, either measures are taken to run precipitation in advance, or a certain number of precipitation wells are added accordingly. During the construction process, if precipitation is run in advance, not only will a large amount of groundwater resources be exploited, but also electricity resources will be wasted. In some areas, there will be a shortage of electricity. If a certain number of precipitation wells are added to speed up the lowering of the groundwater level.

[0004] Application No. CN202011508526.2 discloses a method for sealing a drainage well in a foundation pit, comprising the following steps: S1: selecting the location of the drainage well and inserting a steel pipe as the well wall of the drainage well; S2: welding a water stop ring on the neck of the steel pipe and welding a connecting ring on the top of the steel pipe; S3: arranging a waterproof membrane on the outer wall of the steel pipe, and the waterproof membrane extends from the bottom of the well to the bottom of the water stop ring; S4: arranging a water stop copper bar clamp under the water stop ring, and the water stop copper bar clamp is used to clamp the waterproof membrane; S5: laying a bottom plate on both sides of the foundation pit and the drainage well, and a reserved sealing position is provided on the bottom plate, and a steel pipe is arranged in the reserved sealing position; S6: placing a water pump in the steel pipe to reduce the water to 50 cm below the lowest point of the foundation pit, and stopping the drainage after the basement structure is completed; S7: withdrawing the water pump, filling the drainage well with gravel, and sealing a manhole cover with holes on the connecting ring; S8: grouting along the holes on the manhole cover.

[0005] In announcement number CN112627828A, a mine shaft wall structure and a construction method thereof are disclosed, wherein the mine shaft wall structure comprises: a plurality of shaft wall prefabricated components, which are arranged in a circumferential direction along the center of the shaft and are stacked along the axial direction of the shaft; the shaft wall prefabricated components comprise: a multi-cavity square steel pipe, which has a rectangular cross-section and comprises a square cavity formed by a plurality of steel plates; a plurality of circular composite material pipes, which have a circular cross-section and are arranged one by one in the square cavity, wherein the first concrete is filled between the circular composite material pipe and the multi-cavity square steel pipe, and the second concrete is filled inside the circular composite material pipe.

[0006] In the above technology, after the groundwater level drops to meet the requirements, these added precipitation wells will be closed, causing the precipitation wells to be idle in the middle and later stages. The filtering well wall structure of the precipitation well cannot be dismantled or recycled, which increases the construction cost and causes pollution to the underground space in the area. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a recyclable well wall structure and an installation and disassembly method.

[0008] In order to solve the above problems, the technical solution of the present invention is: a recyclable well wall structure, including a well wall structure flower pipe, an outer rib jet pipe, a jet channel, an outer rib jet pipe end a, an outer rib jet pipe end b, a threaded pressure cap, a plug rivet end A, a rivet lock hole, a plug rivet end B, a rivet lock pin, a pressure sealing ring, a jet channel wire plug, a well bottom sealing plate 7, a soil filter gauze and a high-pressure water pump, wherein the well wall structure flower pipe is a steel flower pipe with a certain thickness, and the pipe body has a water hole with a certain porosity;

[0009] The outer rib jet pipe is composed of multiple steel pipes, which are parallel and evenly fixed on the outer edge of the well wall structure flower pipe. The outer rib jet pipe is distributed with multiple jet channels, and the jet channels are holes on the outer rib jet pipe that are inclined downward at 45 degrees;

[0010] The outer rib jet pipe end a and the outer rib jet pipe end b are connecting ends of two sections of the outer rib jet pipe on the recyclable well wall structure;

[0011] The plug-in rivet end A and the plug-in rivet end B are connecting ends of the upper and lower sections of the well wall structure flower pipe, and the inner edge of the plug-in rivet end A is inserted into the interior of the plug-in rivet end B;

[0012] The jet channel plug is a thread cap installed on the lowermost end of the outer rib jet pipe on the first section of the recoverable well wall structure;

[0013] The bottom seal plate is circular in size and matches the outer diameter of the well wall structure flower tube, and is installed at the lowest end of the first section of the recoverable well wall structure;

[0014] The soil filter gauze is a gauze with a certain mesh number, and is wrapped as a whole on the outer surface of the recyclable well wall structure.

[0015] Furthermore, a plurality of outer rib jet tubes are fixed on the outer wall of the well wall structure flower tube 1.

[0016] Furthermore, a rivet lock hole is provided between the insert rivet end A and the insert rivet end B, and a rivet lock pin is inserted inside.

[0017] Furthermore, the outer rib jet tube end a and the outer rib jet tube end b are connected by a pressure sealing ring arranged in the middle and a threaded pressure cap.

[0018] A method for connecting a recoverable well wall structure, characterized in that: the connection method is to place a pressure sealing ring between the upper and lower corresponding outer rib jet tubes, and then rotate the threaded pressure-bearing cap on the outer rib jet tube end b to make the outer rib jet tube end a press the pressure sealing ring, insert the edge of the rivet end A into the interior of the rivet end B4, and rotate the upper section of the well wall structure flower tube to align each rivet lock hole, and then place the rivet lock pins in turn and lock them tightly. The bottom well sealing plate adopts a circular size that matches the outer diameter of the well wall structure flower tube. It is installed at the lowest end of the first section of the recoverable well wall structure, and the connection method is the same as the rivet end A and the rivet end B to ensure that it is firmly connected to the recoverable well wall structure.

[0019] A method for installing a recyclable well wall structure, characterized in that:

[0020] Step 1: Construction of the holes in the precipitation well;

[0021] Step 2: Install the easily removable well wall structure device. Before installation, the well bottom sealing plate and the jet hole plug of the first section of the easily removable well wall structure device should be firmly installed. In addition, the outside of the easily removable well wall structure device should be wrapped with soil gauze as required;

[0022] Step 3: Adjust the position of the easily removable well wall structure device to place it in the center of the well hole, and then backfill the filter material evenly around the easily removable well wall structure device, backfill the part below the groundwater level with medium and coarse sand with a large permeability coefficient, and backfill the part above the groundwater level with clay soil with a small permeability coefficient;

[0023] Step 4: After the precipitation cycle is over, remove the relevant cables, pipelines and precipitation facilities in the well, then firmly connect the high-pressure pump pipe of the high-pressure water pump to the end b of the outer rib jet pipe at the wellhead, and inject water into the outer rib jet pipes in turn. The water injected into the outer rib jet pipes radiates outward through the jet channels under the power of high pressure to disturb the consolidated soil around the easily removable well wall structure device. After each outer rib jet pipe is injected with high-pressure water, the well wall structure device can be easily removed and recovered by external power;

[0024] Step 5: After the well wall structure device is removed, the well hole of the dewatering well shall be backfilled and compacted as required.

[0025] Furthermore, a plurality of outer rib jet tubes with jet channels are fixed to the outer wall of the well wall structure flower tube.

[0026] Compared with the existing technology, the advantages of the present invention are: a recyclable well wall structure and an installation method of the patented invention, the recyclable well wall structure device is made of steel material as a whole, in order to be recycled multiple times and extend the service life to avoid corrosion, anti-corrosion paint can be sprayed on the surface, and it can be connected section by section as a filtering well wall structure of the pipe well, which is fast and convenient to install and dismantle during the construction process, and neatly transported and stored. In addition, an outer rib jet pipe with a jet channel is arranged on it, on the one hand, water can be passed into the outer rib jet pipe by connecting a high-pressure water pump, and the high-pressure water is ejected at high speed through the jet channel, which disturbs and cuts the soil that has been consolidated by precipitation around the well wall structure, so that a simple lifting device can be used to easily lift the well wall structure from the well hole, and then dismantle and recycle it section by section, and in addition, the outer rib jet pipe has a certain rigidity, and it is evenly fixed on the outside of the well wall structure flower pipe, which can effectively reduce the bending and deformation of the well wall structure during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic cross-sectional structure diagram of the recoverable shaft wall structure device of the present invention.

[0028] Figure 2 It is the recyclable well wall structure device of the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0029] Figure 3 The cross-sectional structure of the recoverable well wall structure device of the present invention is shown in FIG. Figure 1 .

[0030] Figure 4 The cross-sectional structure of the recoverable well wall structure device of the present invention is shown in FIG. Figure 2 .

[0031] Figure 5 It is a schematic diagram of the structure of the recoverable shaft wall structure device of the present invention after the upper and lower sections are connected.

[0032] Figure 6 The cross-sectional structure of the bottom sealing plate of the recoverable well wall structure device of the present invention is shown in FIG. Figure 1 .

[0033] Figure 7 The cross-sectional structure of the bottom sealing plate of the recoverable well wall structure device of the present invention is shown in FIG. Figure 2 .

[0034] Figure 8 This is a process diagram of the present invention.

[0035] Reference numerals:

[0036] 1. Well wall structure flower pipe; 2. External rib jet pipe; 21. Jet channel; 22. External rib jet pipe end a; 23. External rib jet pipe end b; 24. Threaded pressure cap; 3. Insert rivet end A; 31. Rivet lock hole; 4. Insert rivet end B; 5. Pressure sealing ring; 6. Jet channel wire plug; 7. Well bottom sealing plate; 8. Filter cloth. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0038] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0039] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] like Figures 1 to 5 As shown, a recyclable well wall structure is characterized in that it includes a well wall structure flower tube 1, an outer rib jet tube 2, a jet channel 21, an outer rib jet tube end a22, an outer rib jet tube end b23, a threaded pressure cap 24, a plug rivet end A3, a rivet lock hole 31, a plug rivet end B4, a rivet lock pin 41, a pressure sealing ring 5, a jet channel wire plug 6, a well bottom sealing plate 7, a soil filter gauze 8 and a high-pressure water pump 9,

[0041] The well wall structure flower tube 1 is a steel flower tube with a suitable length, diameter and certain thickness, and the tube body has water holes with a certain porosity. A plurality of outer rib jet tubes 2 with jet channels 21 are fixed to the outer wall of the well wall structure flower tube 1;

[0042] The outer rib jet pipe 2 is a plurality of small-diameter steel pipes with a certain rigidity, which are parallel and evenly fixed on the outer edge of the well wall structure flower pipe. The outer rib jet pipe 2 is distributed with a plurality of jet channels 21, and the jet channels 21 are holes on the outer rib jet pipe that are inclined downward at 45 degrees.

[0043] The outer rib jet pipe end a22 and the outer rib jet pipe end b23 are the connecting ends of the outer rib jet pipe 2 on the two sections of the recoverable well wall structure device. The connection method is to place a pressure sealing ring 5 between the upper and lower corresponding outer rib jet pipes 2, and then rotate the threaded pressure-bearing cap 24 on the outer rib jet pipe end b23 to make the outer rib jet pipe end a22 press the pressure sealing ring 5. The outer rib jet pipe end a22 and the outer rib jet pipe end b23 are connected by the threaded pressure-bearing cap 24 with the pressure sealing ring 5 set in the middle.

[0044] The plug rivet end A3 and the plug rivet end B4 are the connecting ends of the upper and lower sections of the well wall structure flower pipe 1. The edge of the plug rivet end A3 is inserted into the inside of the plug rivet end B4, and the upper section of the well wall structure flower pipe 1 is slowly rotated to ensure that each rivet lock hole 31 is transparent, and then the rivet lock pin 41 is placed in sequence and locked. The plug rivet end A3 and the plug rivet end B4 are quickly connected through the rivet lock hole 31 using the rivet lock pin 41;

[0045] The jet channel plug 6 is a thread cap installed on the lowermost end of the outer rib jet pipe 2 on the first section of the recoverable well wall structure;

[0046] The bottom sealing plate 7 is a thick plate with a circular size that matches the outer diameter of the well wall structure flower tube 1. It is installed at the lowest end of the first section of the recoverable well wall structure, and the connection method is the same as the plug-in rivet end A3 and the plug-in rivet end B4 to ensure that it is firmly connected to the recoverable well wall structure;

[0047] The soil filter gauze 8 is a gauze with a certain mesh number, and is entirely wrapped around the outer surface of the recyclable well wall structure device.

[0048] A method for installing a recyclable well wall structure, characterized in that:

[0049] Step 1: Construction of the holes in the precipitation well;

[0050] Step 2: Install the easily removable well wall structure device. Before installation, the well bottom sealing plate and the jet hole plug of the first section of the easily removable well wall structure device should be firmly installed. In addition, the outside of the easily removable well wall structure device should be wrapped with soil gauze as required;

[0051] Step 3: Adjust the position of the easily removable well wall structure device to place it in the center of the well hole, and then backfill the filter material evenly around the easily removable well wall structure device, backfill the part below the groundwater level with medium and coarse sand with a large permeability coefficient, and backfill the part above the groundwater level with clay soil with a small permeability coefficient;

[0052] Step 4: After the precipitation cycle is over, remove the relevant cables, pipelines and precipitation facilities in the well, then firmly connect the high-pressure pump pipe of the high-pressure water pump to the end b of the outer rib jet pipe at the wellhead, and inject water into the outer rib jet pipes in turn. The water injected into the outer rib jet pipes radiates outward through the jet channels under the power of high pressure to disturb the consolidated soil around the easily removable well wall structure device. After each outer rib jet pipe is injected with high-pressure water, the well wall structure device can be easily removed and recovered by external power;

[0053] Step 5: After the well wall structure device is removed, the well hole of the dewatering well shall be backfilled and compacted as required, using the construction method of high-pressure water cutting and disturbing the soil.

[0054] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A recyclable well wall structure, characterized in that: It comprises a well wall structure flower tube (1), an external rib jet tube (2), a jet channel (21), an external rib jet tube end a (22), an external rib jet tube end b (23), a threaded pressure cap (24), a plug-in rivet end A (3), a rivet lock hole (31), a plug-in rivet end B (4), a rivet lock pin (41), a pressure sealing ring (5), a jet channel thread plug (6), a well bottom sealing plate (7), a soil filter gauze (8) and a high-pressure water pump. The well wall structure flower tube (1) is a steel flower tube with a certain thickness, and the tube body has a water hole with a certain porosity. The outer rib jet pipe (2) is composed of a plurality of steel pipes, which are parallel and evenly fixed on the outer edge of the well wall structure flower pipe. The outer rib jet pipe (2) is distributed with a plurality of jet channels (21), and the jet channels (21) are holes on the outer rib jet pipe that are inclined downward at 45 degrees. The outer rib jet pipe end a (22) and the outer rib jet pipe end b (23) are connecting ends of two sections of the outer rib jet pipe (2) on the recoverable well wall structure; The rivet end A (3) and the rivet end B (4) are connecting ends of the upper and lower sections of the well wall structure flower pipe (1), and the inner edge of the rivet end A (3) is inserted into the interior of the rivet end B (4); The jet channel plug (6) is a thread cap installed on the lowermost end of the outer rib jet pipe (2) on the first section of the recoverable well wall structure; The bottom sealing plate (7) is circular in size and matches the outer diameter of the well wall structure flower tube (1), and is installed at the lowest end of the first section of the recoverable well wall structure; The soil filter gauze (8) is a gauze with a certain mesh number, and is entirely wrapped around the outer surface of the recyclable well wall structure.

2. A recyclable well wall structure according to claim 1, characterized in that: A plurality of outer rib jet tubes (2) are fixed on the outer wall of the well wall structure flower tube (1).

3. A recyclable well wall structure according to claim 1, characterized in that: A rivet lock hole (31) is provided between the rivet end A (3) and the rivet end B (4), and a rivet lock pin is inserted inside.

4. A recyclable well wall structure according to claim 1, characterized in that: The outer rib jet pipe end a (22) and the outer rib jet pipe end b (23) are connected by a pressure sealing ring (5) arranged in the middle and a threaded pressure-bearing cap (24).

5. A method for connecting a recoverable well wall structure, characterized in that: The connection method is as follows: after placing a pressure seal ring (5) between the upper and lower corresponding outer rib jet tubes (2), the threaded pressure cap (24) on the outer rib jet tube end b (23) is rotated to make the outer rib jet tube end a (22) press the pressure seal ring (5), the edge of the rivet end A (3) is inserted into the interior of the rivet end B (4), and the upper section of the well wall structure flower tube (1) is rotated to align each rivet lock hole (31), and then the rivet lock pins are placed in sequence and locked. The well bottom sealing plate (7) adopts a circular size that matches the outer diameter of the well wall structure flower tube (1). It is installed at the lowest end of the first section of the recoverable well wall structure, and the connection method is the same as the rivet end A (3) and the rivet end B (4) to ensure that it is firmly connected to the recoverable well wall structure.

6. A method for installing a recyclable shaft wall structure, characterized in that: Step 1: construct the well hole for dewatering; Step 2: Place the easily removable well wall structure. Before placement, the well bottom sealing plate and the jet hole plug of the first section of the easily removable well wall structure should be firmly installed. In addition, the outside of the easily removable well wall structure should be wrapped with soil gauze as required; Step 3: Adjust the position of the easily removable well wall structure to place it in the center of the well hole, and then backfill the filter material evenly around the easily removable well wall structure. The part below the groundwater level is backfilled with medium and coarse sand with a large permeability coefficient, and the part above the groundwater level is backfilled with clay soil with a small permeability coefficient. Step 4: After the precipitation cycle is over, remove the relevant cables, pipelines and precipitation facilities in the well, then firmly connect the high-pressure pump pipe of the high-pressure water pump to the end b of the outer rib jet pipe at the wellhead, and inject water into the outer rib jet pipes in turn. The water injected into the outer rib jet pipes radiates outward through the jet channels under the power of high pressure to disturb the consolidated soil around the easily removable well wall structure. After each outer rib jet pipe is injected with high-pressure water, the well wall structure can be easily removed and recovered by external power; Step 5: After the well wall structure is removed, the precipitation well hole shall be backfilled and compacted as required.

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