Construction device and method for comprehensive arrangement of foundation pit dewatering pipelines

Abstract

The invention relates to a construction device and method for comprehensive arrangement of foundation pit dewatering pipelines, and relates to the technical field of constructional engineering.The construction device comprises a waterproof sleeve, supporting ribs and a crossover coupling, the outer diameter of the waterproof sleeve is smaller than the inner diameter of a well point water filter pipe, and the multiple supporting ribs capable of being supported above the well point water filter pipe are fixed to the lower portion of the waterproof sleeve; the waterproof sleeve can be located on the well point water filter pipe; the lower portion of the waterproof sleeve is fixedly sleeved with an adapter capable of being communicated with the internal drainage pipe and the external drainage pipe in a sealed mode, the internal drainage pipe extends upwards to the position above the waterproof sleeve from the well point water filtering pipe and is bent downwards to be connected to the adapter, and the external drainage pipe is connected with a drainage bus. According to the construction method, the drainage pipe is embedded into the bottom of the cushion layer through the technologies of comprehensively arranging the foundation pit dewatering pipelines, reserving in advance, pre-embedding the reinforcing steel bar rings and the like, so that the influence of the drainage pipe is avoided when reinforcing steel bars are bound on the cushion layer or concrete is poured on the cushion layer subsequently, and the construction efficiency can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a construction device and method for comprehensive arrangement of foundation pit dewatering pipelines. Background Art

[0002] In recent years, along with the downturn of the real estate industry, the housing construction industry has gradually declined, resulting in a reduction in investment in the industry and a serious extensive management. Due to the particularity of the industry, there can no longer be further breakthroughs in construction management, so construction methods and technological innovation have become new breakthroughs.

[0003] In foundation pit projects, rapid precipitation is required in the early stage, which causes the precipitation pipeline to enter the construction site too early, thus affecting the transportation efficiency within the site. In order to protect the precipitation pipeline, certain protective facilities need to be invested in the later stage, which is costly and the protective facilities are easily damaged. More importantly, although the later protection measures are in place, accidents are inevitable, resulting in damage to the precipitation pipeline. Once unattended, the pipeline may leak water for a long time, and the basement may be soaked in water for a long time, affecting the quality of the project. After the precipitation stops in the later stage, the precipitation pipeline becomes construction waste again, and the removal requires special personnel, which wastes manpower. Therefore, it has become an important construction issue to plan the foundation pit precipitation management in advance and avoid these problems after comprehensive arrangement. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a construction method for the comprehensive arrangement of foundation pit dewatering pipelines, which can effectively solve the problem of chaotic arrangement of foundation pit dewatering pipelines, resulting in reduced subsequent construction efficiency and the need for additional protection measures, which not only affects the appearance, but also makes the dewatering pipelines prone to damage.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a construction device for the comprehensive arrangement of foundation pit dewatering pipelines, arranged above the well-point water filter pipe corresponding to the finished surface of the foundation pit; including a waterproof sleeve, supporting ribs and a conversion joint, the outer diameter of the waterproof sleeve is smaller than the inner diameter of the well-point water filter pipe, and the lower part of the waterproof sleeve is fixed with a plurality of supporting ribs that can be supported above the well-point water filter pipe so that the waterproof sleeve can be seated on the well-point water filter pipe; the lower fixed sealing sleeve of the waterproof sleeve is provided with a conversion joint that can connect the internal drainage pipe and the external drainage pipe, wherein the internal drainage pipe extends upward from the well-point water filter pipe to above the waterproof sleeve, and is bent downward to be connected to the conversion joint, and the external drainage pipe is connected to the drainage bus.

[0006] Furthermore, two water-stop rings are arranged on the outer side of the waterproof cylinder, and the outer diameter of the water-stop ring is larger than the outer diameter of the well point water filter pipe.

[0007] Furthermore, a mounting hole is provided on the inner wall of the waterproof sleeve, the conversion joint is sleeved in the mounting hole, and the inner and outer sides of the conversion joint are sealed and connected to the inner wall of the waterproof sleeve through threads and sealing gaskets.

[0008] Furthermore, a support groove is provided at the bottom of the waterproof sleeve, and the support ribs are fixed in the support groove, so that the lower edge of the waterproof sleeve is lower than the upper edge of the well point water filter pipe.

[0009] Furthermore, it also includes a fixing sleeve, which is slidably sleeved on the outer end of the support rib and locked by a top screw to establish a supporting point between the outer end of the support rib and the outer wall of the well point water filter pipe.

[0010] Furthermore, two supporting ribs are arranged in parallel and are located on both sides of the waterproof sleeve.

[0011] Furthermore, side ribs extend outward from the support ribs, and an annular body is provided between the middle portion of the side ribs and the outside of the support ribs.

[0012] Furthermore, a sealing layer is provided above the side ribs and the supporting ribs to seal the gap between the waterproof sleeve and the well point water filter pipe.

[0013] Furthermore, it also includes a sealing skirt, the upper part of which is fixed to the outer side of the lower part of the waterproof sleeve, and the lower part of which extends around the well point water filter pipe to seal the gap between the waterproof sleeve and the well point water filter pipe.

[0014] A construction method for comprehensive arrangement of foundation pit dewatering pipelines, and a construction device for comprehensive arrangement of foundation pit dewatering pipelines, comprising the following steps;

[0015] Step 1: dig the dewatering well point in the foundation pit to the finished surface; then lower the well point filter pipe back to a position higher than the finished surface;

[0016] Step 2: Arrange the drainage pipe, the upper end of the drainage pipe is bent through the hose and extends downward to the position of the conversion joint;

[0017] Step 3: Place the pre-made waterproof sleeve on the top of the well point water filter pipe through the support ribs, adjust the position of the waterproof sleeve so that the inner end joint of the conversion joint is connected to the drainage pipe; connect the external drainage pipe to the external joint of the conversion joint.

[0018] Step 4: dig a groove on the foundation that matches the external drainage pipe, extend the external drainage pipe along the groove to the outside of the foundation, and make the top elevation of the internal drainage pipe not lower than the bottom elevation of the concrete cushion layer;

[0019] Step 5: When the foundation pit is constructed, the pre-buried steel ring is pre-welded on the side wall of the foundation pit. When the supporting structure is constructed on the slope of the foundation pit, the pre-buried steel ring is pre-welded with the supporting surface steel of the slope. After the surface concrete is sprayed, the exposed steel ring is inserted into the external drainage pipe and connected to the drainage main pipe.

[0020] Step six, seal the gap between the waterproof sleeve and the well point water filter pipe, and then construct the cushion layer.

[0021] The beneficial effects of the above technical solution are:

[0022] 1. Improve construction efficiency:

[0023] The present invention realizes the effective organization and layout of foundation pit dewatering pipelines through an innovative construction device and construction method for comprehensive arrangement of foundation pit dewatering pipelines. This comprehensive arrangement method avoids construction obstacles caused by drainage pipelines when tying steel bars or pouring concrete on the subsequent cushion layer, thereby significantly improving the overall construction efficiency.

[0024] 2. Simplify the construction process:

[0025] The present invention simplifies the construction process and reduces the complexity and uncertainty of on-site operations by pre-fabricating and installing components such as waterproof sleeves, support ribs and conversion joints, promptly dropping well point water filter pipes after the foundation pit is excavated to the finished surface, and pre-digging grooves that are compatible with external drainage pipes.

[0026] 3. Reduce construction costs:

[0027] Due to the improvement of construction efficiency and the simplification of the process, the present invention helps to reduce construction costs. In addition, by pre-reserving and pre-embedding steel rings and other technical means, the subsequent repair or replacement of drainage pipelines due to damage or displacement is avoided, further saving costs.

[0028] 4. Enhance construction safety:

[0029] The invention ensures a tight seal between the waterproof sleeve and the well point filter pipe through standardized construction steps and component design, such as setting a sealing skirt and a sealing layer, and prevents safety problems caused by leakage. At the same time, through locking mechanisms such as a fixed sleeve and a top screw, the stability of the support rib is enhanced, the safety during the construction process is improved, and the displacement of the waterproof sleeve is avoided.

[0030] 5. Improve the construction environment:

[0031] By burying the drainage pipe at the bottom of the cushion layer, the present invention avoids the exposure and damage of the drainage pipeline during the construction process and reduces the generation of construction waste. This not only improves the construction environment, but also helps to reduce the impact and pollution on the environment.

[0032] 6. Improve construction quality:

[0033] The present invention ensures the stability and reliability of the drainage system through fine design and standardized construction steps. This comprehensive arrangement helps to avoid damage and displacement of drainage pipelines during construction, thereby improving the overall construction quality and project safety.

[0034] In summary, the present invention can effectively improve construction efficiency by comprehensively arranging the foundation pit drainage pipelines, reserving in advance and pre-embedding steel rings and other technologies, burying the drainage pipes at the bottom of the cushion layer, so that the subsequent tying of steel bars or pouring of concrete on the cushion layer will not be affected by the drainage pipelines. At the same time, the problem of damage that is easy to cause when such drainage pipes are unattended in the future is also solved, and the problem of garbage disposal after the construction is completed can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0036] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0037] Figure 3 for Figure 1 A schematic diagram of a top view structure;

[0038] Figure 4 It is a schematic diagram of the internal structure of the waterproof sleeve;

[0039] Figure 5 It is a schematic diagram of the implementation structure of the fixed sleeve;

[0040] Figure 6 Schematic diagram of the implementation structure of the ring body;

[0041] Figure 7 It is a schematic diagram of the construction structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the arrangement of the well point water filter pipes in the foundation pit;

[0043] Fig. 9 Schematic diagram of the method for fixing the dewatering pipeline on the slope of the foundation pit.

[0044] Figure markings: 1-well point water filter pipe, 2-internal drainage pipe, 3-waterproof sleeve, 4-drainage pipe, 5-sponge protective layer, 6-conversion joint, 61-internal structure, 62-external joint, 7-support ribs, 71-support groove, 8-concrete cushion, 9-side wall of foundation pit, 10-rebar ring, 11-side ribs, 12-annular body, 13-water stop ring, 14-external drainage pipe, 15-fixing sleeve, 16-top screw. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0046] Embodiment 1. This embodiment aims to provide a construction method for the comprehensive arrangement of foundation pit dewatering pipelines, which is mainly used for the comprehensive arrangement construction of foundation pit dewatering pipelines. In view of the current chaotic arrangement of foundation pit dewatering pipelines, which leads to reduced subsequent construction efficiency and the need for additional protection measures, which not only affects the appearance, but also makes the dewatering pipelines prone to damage, this embodiment provides a construction device for the comprehensive arrangement of foundation pit dewatering pipelines.

[0047] like Figure 1-4 As shown in the figure, a construction device for the comprehensive arrangement of foundation pit drainage pipelines is arranged above the well point water filter pipe 1 corresponding to the finished surface of the foundation pit; the device includes a waterproof sleeve 3, a supporting rib 7 and a conversion joint 6. The waterproof sleeve 3 is implemented as a cylinder sleeve, and its outer diameter is smaller than the inner diameter of the well point water filter pipe 1, so that the waterproof sleeve 3 can penetrate into the well point water filter pipe 1. In specific implementation, after the drainage well point is excavated to the finished surface in the foundation pit, the well point water filter pipe 1 will fall back to a position not much different from the height of the finished surface. Before pouring the cushion layer, waterproof measures should be taken. The well point waterproof steel sleeve is made in advance. The diameter of the well point waterproof steel sleeve is about 100mm smaller than the well point water filter pipe 1, the wall thickness is 5mm, and the height is customized according to the thickness of the raft foundation.

[0048] A plurality of supporting ribs 7 capable of supporting the top of the well-point water filter pipe 1 are fixed to the lower part of the waterproof sleeve 3 so that the waterproof sleeve 3 can be seated on the well-point water filter pipe 1; during implementation, two supporting ribs 7 are arranged in parallel in this embodiment and are located on both sides of the waterproof sleeve 3, and a supporting groove 71 is arranged at the bottom of the waterproof sleeve 3. The supporting ribs 7 are fixed in the supporting groove 71, and the lower edge of the waterproof sleeve 3 is made lower than the upper edge of the well-point water filter pipe 1, so that when the sealing structure is arranged, the outer wall of the waterproof sleeve 3 can be used as a sealing basis.

[0049] The lower fixed sealing sleeve of the waterproof sleeve 3 is provided with a conversion joint 6 that can connect the internal drainage pipe 2 and the external drainage pipe 14. In the specific arrangement structure, a mounting hole is opened on the inner wall of the waterproof sleeve 3, and the conversion joint 6 is mounted in the mounting hole. The inner and outer sides of the conversion joint 6 are sealed and connected to the inner wall of the waterproof sleeve 3 through threads and sealing gaskets, thereby realizing the sealed installation of the conversion joint 6. During implementation, the internal drainage pipe extends upward from the well point water filter pipe 1 to the top of the waterproof sleeve 3, and is bent downward to be connected to the conversion joint 6, and the external drainage pipe 14 is connected to the drainage bus. The conversion joint 6 has an internal joint 61 and an external joint 62, and the internal joint 61 is bent upward horizontally or vertically to facilitate docking with the internal drainage pipe.

[0050] When the conversion joint 6 is constructed, a hole with a diameter of about 100 mm is reserved at a position about 50 mm from the bottom of the well point waterproof sleeve 3. Since the hole is welded and cut after the well point waterproof steel sleeve is manufactured, it is very easy to cause the edge of the hole to have edges and corners, and then the drainage pipe is worn and broken. Therefore, protective measures need to be set up in advance around the hole.

[0051] During the specific implementation, the drainage pipeline is disconnected in advance at the hole of the well point waterproof steel sleeve, and connected using a hard conversion joint 6, and the outside of the hard conversion joint 6 is tightly wrapped with a sponge protective layer, and the thickness of the protective layer is not less than 50mm to ensure its sealing effect. The drainage pipeline extends from the water pump to the top of the well point waterproof steel sleeve, and is converted using a drainage hose 4, returning to the hole at the bottom of the waterproof sleeve 3, and extending through the hole. The external drainage pipe 14 is directly placed on the foundation, and the drainage pipe extends outside the foundation pit. It is fixed on the side wall 9 of the foundation pit with a pre-buried steel ring to prevent wear caused by shaking of the drainage pipe.

[0052] The construction method of the pre-embedded steel ring is as follows: the pre-embedded steel ring 10 on the side wall of the foundation pit can use round steel with a diameter of 6 mm. When the supporting structure is constructed on the slope of the foundation pit, the pre-embedded steel ring 10 is welded to the supporting surface steel bars of the slope. The diameter of the pre-embedded steel ring 10 should be greater than 200 mm. After the surface concrete is sprayed, the exposed steel ring 10 should not be less than 100 mm.

[0053] The diameter of the well point waterproof steel sleeve is smaller than that of the well point water filter pipe 1, and the support ribs 7 are used for support. The surrounding area can be sealed with a soft plastic bag or a sealing layer, such as a waterproof membrane, etc. After pouring the concrete cushion layer, the drainage pipeline will be directly left inside the cushion layer.

[0054] After the drainage pipeline extends out from the bottom hole of the well point waterproof sleeve 3, a groove with the same size as the drainage pipeline needs to be dug on the foundation, and the drainage pipeline is extended along the groove to the outside of the foundation. At this time, the top elevation of the drainage pipeline is consistent with the bottom elevation of the concrete cushion layer, and does not affect the thickness of the cushion layer.

[0055] In this embodiment, two water stop rings 13 are arranged on the outside of the waterproof sleeve 3, and the outer diameter of the water stop ring 13 is larger than the outer diameter of the well point water filter pipe 1. In specific implementation, two water stop rings 13 are arranged in the middle of the well point waterproof sleeve 3 by welding, and the diameter of the water stop ring is about 100mm larger than the diameter of the water filter pipe, and the wall thickness is the same as that of the steel sleeve. The two water stop ring structures can form a water stop structure in the cushion layer above the gap between the waterproof sleeve 3 and the well point water filter pipe 1, improve its water stop effect, and avoid water leakage in the gap between the waterproof sleeve 3 and the well point water filter pipe 1.

[0056] In specific implementation, this embodiment also provides a construction method for comprehensive arrangement of foundation pit dewatering pipelines, and a construction device for comprehensive arrangement of foundation pit dewatering pipelines, including the following steps:

[0057] Step 1: excavate the precipitation well point in the foundation pit to the finished surface; then lower the well point water filter pipe 1 back to a position higher than the finished surface;

[0058] Step 2: Arrange the drainage pipe, the upper end of the drainage pipe is bent through the hose and extends downward to the position of the conversion joint 6;

[0059] Step 3: Place the prefabricated waterproof sleeve 3 on the top of the well point water filter pipe 1 through the support ribs 7, adjust the position of the waterproof sleeve 3, so that the inner end joint of the conversion joint 6 is connected to the drainage pipe; connect the external drainage pipe to the external joint of the conversion joint 6

[0060] Step 4: dig a groove on the foundation that matches the external drainage pipe, extend the external drainage pipe along the groove to the outside of the foundation, and make the top elevation of the internal drainage pipe not lower than the bottom elevation of the concrete cushion layer;

[0061] Step 5: When the foundation pit is constructed, the pre-buried steel ring 10 is pre-welded on the side wall 9 of the foundation pit. When the supporting structure is constructed on the slope of the foundation pit, the pre-buried steel ring is pre-welded with the supporting surface steel bars of the slope. After the surface concrete is sprayed, the exposed steel ring is sheathed with an external drainage pipe inside the steel ring and connected to the drainage main pipe.

[0062] Step six, seal the gap between the waterproof sleeve 3 and the well point water filter pipe 1, and then construct the cushion layer.

[0063] After the foundation pit is excavated to the finished surface, the wellpoint drainage pipelines will all be scattered on the finished surface of the foundation. The wellpoint water filter pipe 1 is slightly higher than the foundation surface. Before the wellpoint waterproof sleeve 3 is placed, a hole is welded at its bottom to allow the drain pipe to pass smoothly. Two support ribs 7 are welded at the bottom of the wellpoint waterproof sleeve 3 to prevent the wellpoint waterproof sleeve 3 from falling. The length of the drain pipe is measured so that the drain pipe can be exposed at the top of the wellpoint waterproof sleeve 3, and the drain pipe is connected with a drainage hose. Then the drain pipe is extended into the wellpoint waterproof sleeve 3 to the bottom hole, and the drainage hose is used to connect at the bottom hole. When passing through the hole, the drain pipe is disconnected and connected with a hard conversion joint 6. Since the hole is welded later, the hole has many corners, and it is very easy to wear and tear the hole directly through the drain pipe, resulting in water leakage. Therefore, a sponge protective layer is set on the outside of the hard conversion joint 6 around the hole. At this time, the wellpoint waterproof sleeve 3 is installed, and the drain pipe connected at the bottom extends outward.

[0064] A small groove is dug in the foundation soil, which is large enough to put down the drainage pipe. After the drainage pipe extends outward from the bottom of the well point waterproof sleeve 3, it extends along the groove to the outside of the foundation, and then extends outward along the side wall of the foundation pit to the water pit for drainage.

[0065] The drainage pipe is very easy to shake on the side wall of the foundation pit, causing it to swing unsteadily from the water pit. Therefore, when constructing the support structure on the side wall of the foundation pit, pre-embed the steel ring in advance so that the drainage pipe can pass through the steel ring to prevent it from shaking. Then pour the cushion concrete and bury the drainage pipe at the bottom of the cushion. There is no pipeline influence on the surface from beginning to end, which greatly improves the transportation efficiency.

[0066] This embodiment uses a comprehensive arrangement of the foundation pit drainage pipelines, and uses technologies such as pre-reservation and pre-embedded steel rings to bury the drainage pipes at the bottom of the cushion layer, so that the subsequent tying of steel bars or pouring of concrete on the cushion layer will not be affected by the drainage pipes, which can effectively improve the construction efficiency. At the same time, the problem of damage that is easy to cause when such drainage pipes are unattended in the future is also solved, and the problem of garbage disposal after the construction is completed can also be reduced.

[0067] Embodiment 2: This embodiment further illustrates the installation structure of the waterproof sleeve 3.

[0068] In this embodiment, it also includes a fixing sleeve 15, which is slidably mounted on the outer end of the support rib 7 and locked by a top screw 16 to establish a support point from the outer end of the support rib 7 and the outer wall of the well-point water filter pipe 1. Through this structure, the support rib 7 can be closely attached to the well-point water filter pipe 1 from the outside to avoid displacement of the support rib 7 and ensure that the waterproof sleeve 3 is concentric with the well-point water filter pipe 1.

[0069] Embodiment 3, this embodiment further illustrates the gap sealing method between the support rib 7 and the waterproof sleeve 3 and the well point water filter pipe 1.

[0070] In this embodiment, side ribs 11 extend outwardly from the support ribs 7, and an annular body 12 is provided between the middle portion of the side ribs 11 and the outside of the support ribs 7. The annular body 12 can form an external water stop ring at the joint of the waterproof sleeve 3 and the well-point water filter pipe 1. During implementation, the joint of the waterproof sleeve 3 and the well-point water filter pipe 1 is located in the middle area of ​​the annular body to ensure the sealing of the joint between the waterproof sleeve 3 and the well-point water filter pipe 1.

[0071] Subsequently, a sealing layer is arranged above the side ribs and the supporting ribs 7 to seal and fill the gap between the annular body and the waterproof sleeve 3 and the well point water filter pipe 1 to seal the gap between the waterproof sleeve 3 and the well point water filter pipe 1.

[0072] Embodiment 4: This embodiment further illustrates the gap sealing method between the waterproof sleeve 3 and the well point water filter pipe 1.

[0073] This embodiment also includes a sealing skirt, the upper part of which is fixed to the outer side of the lower part of the waterproof sleeve 3, and the lower part of which extends to the periphery of the well point water filter pipe 1, and then a cushion layer is filled and the sealing skirt is compacted with the cushion layer to seal the gap between the waterproof sleeve 3 and the well point water filter pipe 1.

[0074] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. The basic concept of the present invention is to bury the drainage pipe at the bottom of the cushion layer by comprehensively arranging the foundation pit drainage pipelines, pre-reserving and pre-embedding steel rings, etc., so that the subsequent tying of steel bars or pouring of concrete on the cushion layer will not be affected by the drainage pipes. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A construction device for comprehensive arrangement of foundation pit dewatering pipelines, arranged above the well point water filter pipe corresponding to the finished surface of the foundation pit; characterized in that: It includes a waterproof sleeve, supporting ribs and a conversion joint, the outer diameter of the waterproof sleeve is smaller than the inner diameter of the well-point water filter pipe, and the lower part of the waterproof sleeve is fixed with multiple supporting ribs that can be supported on the top of the well-point water filter pipe so that the waterproof sleeve can be seated on the well-point water filter pipe; the lower fixed sealing sleeve of the waterproof sleeve is provided with a conversion joint that can connect the internal drainage pipe and the external drainage pipe, wherein the internal drainage pipe extends upward from the well-point water filter pipe to the top of the waterproof sleeve, and is bent downward to be connected to the conversion joint, and the external drainage pipe is connected to the drainage bus.

2. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to claim 1 is characterized in that: Two water-stop rings are arranged on the outer side of the waterproof cylinder, and the outer diameter of the water-stop ring is larger than the outer diameter of the well point water filter pipe.

3. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to claim 1 is characterized in that: A mounting hole is provided on the inner wall of the waterproof sleeve, the conversion joint is sleeved in the mounting hole, and the inner and outer sides of the conversion joint are sealed and connected with the inner wall of the waterproof sleeve through threads and sealing pads.

4. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to claim 1 is characterized in that: A supporting groove is arranged at the bottom of the waterproof sleeve, and the supporting ribs are fixed in the supporting groove, so that the lower edge of the waterproof sleeve is lower than the upper edge of the well point water filter pipe.

5. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to claim 1 is characterized in that: It also includes a fixing sleeve, which is slidably sleeved on the outer end of the supporting rib and is locked by a top screw to establish a supporting point between the outer end of the supporting rib and the outer wall of the well point water filter pipe.

6. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to any one of claim 1, characterized in that: Two supporting ribs are arranged in parallel and are located on both sides of the waterproof sleeve.

7. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to claim 6 is characterized by: Side ribs are extended outward from the support ribs, and an annular body is arranged between the middle part of the side ribs and the outside of the support ribs.

8. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to claim 7 is characterized by: A sealing layer is arranged above the side ribs and the supporting ribs to seal the gap between the waterproof sleeve and the well point water filter pipe.

9. The construction device for comprehensive arrangement of foundation pit dewatering pipelines according to claim 1, characterized in that: It also includes a sealing skirt, the upper part of which is fixed to the outer side of the lower part of the waterproof sleeve, and the lower part of which extends around the well point water filter pipe to seal the gap between the waterproof sleeve and the well point water filter pipe.

10. A construction method for comprehensive arrangement of foundation pit dewatering pipelines, applied to the construction device for comprehensive arrangement of foundation pit dewatering pipelines according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: dig the dewatering well point in the foundation pit to the finished surface; then lower the well point filter pipe back to a position higher than the finished surface; Step 2: Arrange the drainage pipe, the upper end of the drainage pipe is bent through the hose and extends downward to the position of the conversion joint; Step 3: Place the prefabricated waterproof sleeve on the top of the well point filter pipe through the support ribs, adjust the position of the waterproof sleeve so that the inner end joint of the conversion joint is connected to the drainage pipe; connect the external drainage pipe to the external joint of the conversion joint. Step 4: Dig a groove on the foundation that matches the external drainage pipe, extend the external drainage pipe along the groove to the outside of the foundation, and make the top elevation of the internal drainage pipe not lower than the bottom elevation of the concrete cushion layer; Step 5: When the foundation pit is constructed, the pre-buried steel ring is pre-welded on the side wall of the foundation pit. When the supporting structure is constructed on the slope of the foundation pit, the pre-buried steel ring is pre-welded with the supporting surface steel of the slope. After the surface concrete is sprayed, the exposed steel ring is inserted into the external drainage pipe and connected to the drainage main pipe. Step six, seal the gap between the waterproof sleeve and the well point water filter pipe, and then construct the cushion layer.

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