A water diversion structure for underground space side wall leakage and its construction method

Abstract

The present invention discloses a water diversion structure for underground space side wall leakage and a construction method thereof, comprising a structural bottom layer, an underground waterproof layer, a hydrophobic plate layer, a cushion layer and a reinforced concrete layer which are sequentially arranged from bottom to top, wherein the hydrophobic plate layer comprises a hydrophobic plate body and hydrophobic plate edge blocks arranged on opposite sides of the hydrophobic plate body, the top surface of the hydrophobic plate body is formed with a flooding slope which can guide groundwater to flow to the hydrophobic plate edge blocks on both sides, the top surface of the hydrophobic plate edge blocks is provided with a drainage channel which can converge groundwater, and an impurity cleaning mechanism which can clean solid impurities accumulated therein is provided at the drainage channel; the present invention can drain water in time, reduce regional water accumulation, improve the overall strength and durability of the water diversion structure, prevent groundwater from seeping into the wall, and effectively protect the inner wall and shear wall.

Description

Technical Field

[0001] The invention relates to a seepage drainage technology for underground space side walls, and in particular to an underground space side wall seepage drainage structure and a construction method thereof. Background Art

[0002] With the continuous development of the economy and society and the continuous advancement of urban-rural integration, the development and utilization of underground space has become an important way to expand urban space, improve land utilization, enhance urban functions, ease traffic congestion, and overcome the contradiction of insufficient land resources. It is also an important way to promote new urbanization and promote sustainable economic and social development. In underground space, side walls are prone to water seepage, especially in underground space in areas with abundant groundwater. The water seepage phenomenon is more prominent, and the accumulated water cannot be discharged in time, resulting in cracks or holes in the side walls of the underground space, and even collapse accidents.

[0003] The Chinese invention patent with application number 202011258154.2 discloses a basement waterproofing membrane construction method and waterproof structure, including a cushion layer, a pressure relief layer, a base layer and a waterproofing membrane layer are arranged on the upper side of the cushion layer from bottom to top; the pressure relief layer is a double-layer hollow structure; a plurality of water-permeable holes are arranged at the bottom of the pressure relief layer; a balancing valve assembly is arranged in the water-permeable hole, which is moved in the vertical direction by the water pressure of the buoyancy component and connected with different holes, and then when the static water pressure of the basement is higher than the pressure of the balancing valve assembly, the groundwater flows into the pressure relief layer, and the base layer and the waterproofing membrane layer constitute a secondary waterproofing structure, thereby strengthening the waterproofing of the basement; the waterproofing structure is mainly waterproofed by waterproofing membrane, and the effective time of waterproofing is short. As the use time increases, the waterproofing membrane ages and its waterproofing performance gradually decreases. Water seepage still occurs in the basement. The waterproofing structure realizes self-balance of pressure. In fact, the groundwater is not discharged in time. Over time, it is still easy to cause water accumulation and affect the basement wall. Summary of the invention

[0004] The purpose of the present invention is to provide a water diversion structure for underground space side wall leakage and a construction method thereof, which can drain water in time, reduce regional water accumulation, and thus effectively protect the underground space wall.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A water diversion structure for leakage of the side wall of an underground space comprises a structural bottom layer, an underground waterproof layer, a hydrophobic plate layer, a cushion layer and a reinforced concrete layer which are arranged in sequence from bottom to top, wherein the hydrophobic plate layer comprises a hydrophobic plate body and hydrophobic plate side blocks arranged on opposite sides of the hydrophobic plate body, a flooding slope which can guide groundwater to flow toward the hydrophobic plate side blocks on both sides is formed on the top surface of the hydrophobic plate body, a drainage concave channel which can converge groundwater is arranged on the top surface of the hydrophobic plate side blocks, and an impurity cleaning mechanism which can clean solid impurities accumulated therein is arranged at the drainage concave channel.

[0007] On the basis of the above technical solution, the present invention can be improved as follows:

[0008] Furthermore, the impurity cleaning mechanism includes a bracket fixedly arranged on the top surface of the hydrophobic plate edge block and a cleaning component slidably arranged on the bracket, and the cleaning component cooperates with the drainage channel when sliding.

[0009] Furthermore, the bracket is an elongated frame parallel to the length direction of the hydrophobic plate edge block, and a slide groove parallel to its length direction is provided on the bracket. The slide groove is slidably connected to a cleaning component, and the cleaning component slides along the slide groove and cooperates with the drainage channel.

[0010] Furthermore, the cleaning assembly includes a slider slidably connected to the slide groove, the top surface of the slider is hinged with a handrail, and a cleaning head is fixedly arranged on the bottom surface of the slider. The slider is driven to slide by the handrail, and the cleaning head is correspondingly driven to slide along the drainage channel and fit tightly with the drainage channel.

[0011] Furthermore, a plurality of hydrophobic holes parallel to the sliding direction of the cleaning head are provided through the cleaning head.

[0012] Furthermore, the top surface of the hydrophobic plate body forms a flashing slope which gradually inclines from the middle to the hydrophobic plate edge blocks on both sides.

[0013] Furthermore, a plane is formed in the middle of the top surface of the hydrophobic plate body, and a flashing slope is formed at the edge which is gradually inclined toward the hydrophobic plate edge blocks on both sides.

[0014] The present invention also provides a construction method for the above-mentioned underground space side wall water diversion structure, comprising the following steps:

[0015] S01, build the structural base layer and underground waterproof layer from bottom to top;

[0016] S02, laying the water-repellent board layer. When laying the water-repellent board, naturally spread the water-repellent board along the flashing direction, lay it loosely, and level the flashing slope along the edges of the inner wall and shear wall;

[0017] S03, after the hydrophobic plates are laid, the hydrophobic plates are welded together to form a hydrophobic plate layer; during welding, the number of overlapping layers of the hydrophobic plates is less than three;

[0018] S04, construct the cushion layer, and vibrate and compact the hydrophobic slab layer with coarse sand or mung bean stone concrete to form a cushion layer;

[0019] S05, constructing a reinforced concrete layer, tying a bidirectional steel mesh, and pouring concrete on the drain plate to form a reinforced concrete layer;

[0020] S06, the drainage channel is connected to the drain plate.

[0021] Furthermore, in step S02, intervals are set between the flashing slope and the inner wall, and between the flashing slope and the shear wall; before laying the drain plate, clean the base where the drain plate is to be laid to ensure that the surface of the base is flat and free of foreign matter, and level it with cement mortar. After leveling, set a water-blocking strip near the wall. The water-blocking strip is cast with fine stone concrete, and is 2 to 3 cm higher than the leveled bottom plate.

[0022] Furthermore, in step S03, the welded edges of the hydrophobic plates are filled with liquid glue at places where they are not firmly welded; after the hydrophobic plates are welded, a gap is left below the weld, and a hydrophobic plate strip is provided in the gap as a hydrophobic plate lining to ensure a tight connection between the two sections of the hydrophobic plates.

[0023] Compared with the prior art, the technology of the present invention has the following advantages:

[0024] (1) The water diversion structure of the present invention is provided with a flooding slope and a drainage concave channel, so that rainwater can flow into the drainage concave channel along the flooding slope, and timely drainage can be achieved, thereby reducing regional water accumulation and improving the overall strength and durability of the water diversion structure; at the same time, since the drainage concave channel is separated from the inner wall and the shear wall, groundwater is prevented from infiltrating into the wall, thereby effectively protecting the inner wall and the shear wall;

[0025] (2) The water diversion structure of the present invention is provided with an impurity cleaning mechanism to facilitate cleaning personnel to clean solid impurities accumulated inside the drainage channel, thereby improving the overall durability of the water diversion structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1 It is a structural schematic diagram of the underground space side wall leakage drainage structure of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the hydrophobic plate layer of the present invention;

[0029] Figure 3 for Figure 2 A partial enlarged view of point A.

[0030] Markings on the attached drawings: 1-structure bottom layer, 2-underground waterproof layer, 3-drainage board layer, 31-drainage board body, 32-drainage board edge block, 32a-drainage channel, 32b-bracket, 32c-slider, 32d-handrail, 32e-cleaning head, 4-cushion layer, 5-reinforced concrete layer, 5a-bidirectional steel mesh. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Example 1

[0033] See also Figure 1 The present invention relates to a water diversion structure for underground space side wall leakage, which comprises a structural bottom layer 1, an underground waterproof layer 2, a hydrophobic board layer 3, a cushion layer 4 and a reinforced concrete layer 5 which are arranged in sequence from bottom to top; the cushion layer 4 is formed by pouring fine stone concrete; a bidirectional steel mesh 5a is built into the reinforced concrete layer 5 to strengthen the water diversion structure.

[0034] The hydrophobic plate layer 3 includes a hydrophobic plate body 31 and hydrophobic plate side blocks 32 arranged on opposite sides of the hydrophobic plate body 31. The hydrophobic plate body 31 is formed by splicing a plurality of hydrophobic plates together. The top surface of the hydrophobic plate body 31 forms a water-splashing slope that gradually inclines from the middle to the hydrophobic plate side blocks 32 on both sides. The inclination angle of the water-splashing slope is 1.5°. According to actual conditions, the inclination angle can also be 3°. The top surface of the hydrophobic plate side block 32 is provided with a drainage channel 32a parallel to its length direction, and the ports of the drainage channel 32a are located on both sides of the length direction of the hydrophobic plate side block 32. So that groundwater can flow along the water-splashing slope of the hydrophobic plate body 31 to the hydrophobic plate side block 32, flow into the drainage channel 32a on the hydrophobic plate side block 32, and be discharged through the drainage channel 32a, thereby improving the hydrophobic effect. In addition, an impurity cleaning mechanism is provided at the drainage channel 32a to clean solid impurities accumulated therein, so as to improve the overall durability of the water diversion structure.

[0035] Specifically, the impurity cleaning mechanism includes a bracket 32b fixedly arranged on the top surface of the hydrophobic plate edge block 32 and a cleaning component slidably arranged on the bracket 32b; the bracket 32b is an elongated frame with an inverted L-shaped cross-section and parallel to the length direction of the hydrophobic plate edge block 32, and the elongated frame is composed of a vertical section and a horizontal section. The vertical section is vertically fixed on the top surface of the hydrophobic plate edge block 32 and is located on one side of the drainage channel 32a, and the horizontal section is parallel to the top surface of the hydrophobic plate edge block 32 and extends horizontally to the top of the drainage channel 32a; a slide groove parallel to its length direction is arranged on the horizontal section of the elongated frame, and the cleaning component is slidably connected to the slide groove, and the cleaning component slides along the slide groove and cooperates with the drainage channel 32a to clean the solid impurities accumulated inside the drainage channel 32a.

[0036] The cleaning assembly includes a slider 32c slidably connected to the slide groove, a handrail 32d is hinged on the top surface of the slider 32c, a carrying handle is fixedly provided on the top of the handrail 32d, a cleaning head 32e is fixedly provided on the bottom surface of the slider 32c, the cleaning head 32e is tightly fitted with the drainage channel 32a and can slide along the drainage channel 32a, and the cleaning head 32e is a rubber block corresponding to the shape of the drainage channel 32a; the handrail 32d is operated by holding the carrying handle to drive the slider 32c to slide along the slide groove, and correspondingly drive the cleaning head 32e to slide along the drainage channel 32a to scrape off the solid impurities accumulated inside the drainage channel 32a.

[0037] A plurality of drainage holes parallel to the sliding direction of the cleaning head 32e are provided through the cleaning head 32e. When the cleaning head 32e slides, groundwater can flow through the drainage holes to avoid disturbing the groundwater and overflowing the drainage channel 32a.

[0038] Example 2

[0039] Compared with Example 1, the difference between this Example 2 is that a plane is formed in the middle of the top surface of the hydrophobic plate body 31, and a flashing slope is formed at the edge which gradually inclines toward the hydrophobic plate edge blocks 32 on both sides. When groundwater falls at the center of the hydrophobic plate body 31, it stays for a short time, and finally flows to the hydrophobic plate edge blocks 32 through the flashing slope at the edge; the inclination angle of the flashing slope at the edge of the hydrophobic plate body 31 is 1.5°, and the inclination angle can also be 3° according to actual conditions.

[0040] The present invention also provides a construction method for a water diversion structure on a side wall of an underground space, comprising the following steps:

[0041] S01, construct the structural bottom layer 1 and underground waterproof layer 2 from bottom to top;

[0042] S02, laying the hydrophobic board layer 3. When laying the hydrophobic board, naturally unfold the hydrophobic board along the flashing direction, lay it loosely, and level the flashing slope along the edge of the inner wall and the shear wall. The distance between the flashing slope and the inner wall and between the flashing slope and the shear wall is 20 cm to prevent water from leaking from the underground space from penetrating into the wall;

[0043] S03, after the hydrophobic plates are laid, the hydrophobic plates are welded together using a hot melt welding machine to form a hydrophobic plate layer 3; the welding edge of the hydrophobic plates is more than 8 cm to avoid welding penetration, false welding and leakage welding, and the unwelded parts are filled with liquid glue; when welding, the debris in the hydrophobic plate interlayer is cleaned to avoid drainage blockage, and when welding, the number of overlapping layers of the hydrophobic plates is less than three to avoid overlapping welding;

[0044] S04, constructing the cushion layer 4, vibrating and compacting the hydrophobic board layer 3 with coarse sand or mung bean stone concrete to form the cushion layer 4;

[0045] S05, constructing a reinforced concrete layer 5, tying a bidirectional steel mesh 5a, and pouring concrete on the drain plate to form a reinforced concrete layer 5; the thickness of the concrete is greater than 100 mm to avoid bulging or cracking of the concrete due to insufficient rigidity;

[0046] S06, the drainage channel 32a is connected to the hydrophobic plate;

[0047] S07, pouring of base slab concrete.

[0048] In step S02, before laying the hydrophobic board, thoroughly clean the base where the hydrophobic board is to be laid to ensure that the surface of the base is flat and free of foreign matter, and level it with cement mortar. After leveling, set a water-blocking strip 30 cm along the wall. The water-blocking strip is cast with fine stone concrete and is 2 to 3 cm higher than the leveled bottom plate.

[0049] The material of the hydrophobic plate in this embodiment is preferably HDPE high-density polyethylene full raw material, the height of the hydrophobic plate is 12mm, the thickness of the coil is more than 0.8mm, and the compressive strength of the hydrophobic plate shell is 200KN / m 2 The tensile strength of the hydrophobic board is above 200N / 50mm, the elongation at break of the hydrophobic board is above 25%, and the tearing performance of the hydrophobic board is above 100N in the longitudinal or transverse direction.

[0050] In step S03, after the hydrophobic plate is welded, a gap is left below the weld, and a 12 cm wide hydrophobic strip is arranged in the gap as a hydrophobic plate lining to ensure a tight connection between the two sections of the hydrophobic plate, thereby avoiding water seepage due to the gap below the hydrophobic plate, thereby enhancing the density of the hydrophobic plate.

[0051] In step S05, during the concrete pouring operation, a 500mm long drainage plate free pouring area is reserved at the concrete overhead, steel mesh and construction joints, and the construction joints are roughened to facilitate the next concrete pouring operation.

[0052] In step S06,

[0053] For the drain plate laid at the drainage concave 32a, the drain plate needs to extend 30mm from the edge of the drainage concave 32a, set up the drainage concave 32a support formwork on the extended part of the drain plate, and pour concrete. After solidification, remove the formwork and cut off the extended part of the drain plate;

[0054] For the drain plate laid at a distance of 10 to 15 cm from the drainage blind pipe or drainage concave 32a, the drainage blind pipe or drainage concave 32a and the drain plate are connected by a plastic pipe with a length of 10 to 15 cm, and then covered with concrete after connection.

[0055] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A water diversion structure for side wall leakage in an underground space, comprising a structural bottom layer, an underground waterproof layer, a hydrophobic board layer, a cushion layer and a reinforced concrete layer arranged in sequence from bottom to top, It is characterized in that The hydrophobic plate layer comprises a hydrophobic plate body and hydrophobic plate side blocks arranged on opposite sides of the hydrophobic plate body, the top surface of the hydrophobic plate body is formed with a flooding slope that can guide groundwater to flow to the hydrophobic plate side blocks on both sides, the top surface of the hydrophobic plate side blocks is provided with a drainage concave channel that can converge groundwater, and the drainage concave channel is provided with an impurity cleaning mechanism that can clean solid impurities accumulated therein; The impurity cleaning mechanism includes a bracket fixedly arranged on the top surface of the hydrophobic plate edge block and a slidable cleaning component arranged on the bracket, and the cleaning component cooperates with the drainage concave channel when sliding; The bracket is an elongated frame parallel to the length direction of the drain plate edge block, and a slide groove parallel to the length direction is provided on the bracket, and a cleaning component is slidably connected to the slide groove, and the cleaning component slides along the slide groove and cooperates with the drainage concave; The cleaning assembly includes a slider slidably connected to the slide groove, a hand lever is hinged on the top surface of the slider, and a cleaning head is fixedly arranged on the bottom surface of the slider. The slider is driven to slide by the hand lever, and the cleaning head is correspondingly driven to slide along the drainage channel and fit closely with the drainage channel. The cleaning head is provided with a plurality of water-repellent holes which are parallel to the sliding direction thereof.

2. The underground space side wall leakage drainage structure according to claim 1, It is characterized in that The top surface of the hydrophobic plate body forms a water-splashing slope which gradually inclines from the middle to the hydrophobic plate edge blocks on both sides.

3. The underground space side wall leakage drainage structure according to claim 1, It is characterized in that A plane is formed in the middle of the top surface of the hydrophobic plate body, and a flooding slope is formed at the edge which is gradually inclined toward the hydrophobic plate edge blocks on both sides.

4. A construction method for the underground space side wall water diversion structure according to any one of claims 1 to 3, The following steps are involved: S01, build the structural base layer and underground waterproof layer from bottom to top; S02, laying the water-repellent board layer. When laying the water-repellent board, naturally spread the water-repellent board along the flashing direction, lay it loosely, and level the flashing slope along the edges of the inner wall and shear wall; S03, after the hydrophobic plates are laid, the hydrophobic plates are welded together to form a hydrophobic plate layer; during welding, the number of overlapping layers of the hydrophobic plates is less than three; S04, construct the cushion layer, and vibrate and compact the hydrophobic board layer with coarse sand or pebbled concrete to form a cushion layer; S05, constructing a reinforced concrete layer, tying a bidirectional steel mesh, and pouring concrete on the drain plate to form a reinforced concrete layer; S06, the drainage channel is connected to the drain plate; S07, pouring of base slab concrete.

5. The construction method of the underground space side wall leakage diversion structure according to claim 4, It is characterized in that In step S02, intervals are set between the flashing slope and the inner wall, and between the flashing slope and the shear wall; before laying the drain plate, clean the base where the drain plate is to be laid to ensure that the surface of the base is flat and free of foreign matter, and level it with cement mortar. After leveling, set a water-blocking strip near the wall. The water-blocking strip is cast with fine stone concrete, and is 2 to 3 cm higher than the leveled bottom plate.

6. The construction method of the underground space side wall leakage diversion structure according to claim 4, It is characterized in that In step S03, the welded edges of the hydrophobic plates are filled with liquid glue at places where they are not firmly welded; after the hydrophobic plates are welded, a gap is left below the weld, and a hydrophobic strip is provided in the gap as a hydrophobic plate lining to ensure a tight connection between the two sections of the hydrophobic plates.

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