Monitoring device for leakage of structure

Abstract

The utility model belongs to the technical field of seepage prevention, and discloses a structure seepage monitoring device, which comprises a flow guide layer arranged below a bottom plate of a pool and having a gradient, and the lower end of the flow guide layer is communicated with a flow guide ditch; the waterproof layer has a gradient, is arranged below the flow guide layer and is used for preventing leakage liquid from flowing into the ground; the diversion trench has a gradient, the lower end of the diversion trench is communicated with the monitoring well, and the diversion trench is used for guiding leakage liquid into the monitoring well; and the monitoring well is used for judging whether the pool leaks or not according to whether leakage liquid exists in the monitoring well. According to the application, the waterproof layer is laid below the flow guide layer, so that the erroneous judgment of the leakage of the water pool caused by the leakage liquid permeating underground or seeping along the pool wall without flowing into the monitoring well can be prevented, and the pollution of the leakage liquid to the surrounding underground water and soil is also avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of seepage prevention, and particularly relates to a monitoring device for seepage of a structure. BACKGROUND

[0002] With the emphasis on ecological environment problems, for ferrous metal smelting and other industry projects, attention needs to be paid to the influence of wastewater produced in each production process on the water environment, so the EIA report proposes that visual monitoring measures need to be taken for wastewater, acid and alkali pipelines and structures.

[0003] To monitor the seepage of the pool, in the prior art, a flow guide layer is arranged at the bottom of the pool, the flow guide layer is connected to the water collecting well through a flow guide pipeline, and whether the water collecting well has water is used to observe the seepage of the pool. For example, the prior art one (patent number CN115075372A) is a pool structure with visual seepage. Relates to the technical field of pool seepage prevention, the pool structure comprises a water storage pool, a water collecting well and a flow guide pipeline, the water collecting well is arranged on one side of the water storage pool and is deeper than the water storage pool, a flow guide layer is arranged on the bottom plate of the water storage pool, an anti-seepage layer is arranged above the flow guide layer, one end of the flow guide pipeline is in communication with the flow guide layer, and the other end of the flow guide pipeline is in communication with the water collecting well. However, it has the following defects:

[0004] (1) The flow guide layer is located above the bottom plate of the pool, and the damage of the anti-seepage layer does not mean that the pool will immediately seep, and the seepage of the pool cannot be truly reflected;

[0005] (2) For pools with different elevations of the continuous pool bottom, water collecting wells and flow guide pipelines need to be arranged respectively, and the investment cost is high;

[0006] (3) No seepage prevention measures are taken around the monitoring well, and if the well wall of the monitoring well seeps, the monitoring result may be confused, and whether the pool seeps can not be observed in time.

[0007] Therefore, it is necessary to improve the technology to improve the monitoring accuracy of wastewater seepage. UTILITY MODEL CONTENTS

[0008] To solve the above problems, the present application provides a monitoring device for seepage of a structure, comprising:

[0009] A flow guide layer is arranged below the pool bottom plate and has a slope, and the low end thereof is in communication with a flow guide ditch;

[0010] A waterproof layer is arranged below the flow guide layer and has a slope, and is used to prevent seepage liquid from flowing into the ground;

[0011] The flow guide ditch has a slope, and the low end thereof is in communication with the monitoring well, and is used to guide the seepage liquid therein into the monitoring well;

[0012] The monitoring well is used for judging whether the pool leaks or not according to whether the inside of the monitoring well has the seepage liquid.

[0013] Optionally, the waterproof layer comprises a first clay layer and a first waterproof film from bottom to top, and geotextile is arranged as the first protective layer between the first waterproof film and the flow guide layer.

[0014] Optionally, the flow guide layer is made of sand, and the flow guide layer is arranged between the pool bottom plate and the concrete cushion.

[0015] Optionally, a second waterproof film is arranged in the flow guide ditch, a second protective layer is further arranged in the inside of the second waterproof film, and pebbles are stacked in the inside of the second protective layer, and the second protective layer is geotextile.

[0016] Optionally, from inside to outside, a third protective layer, a third waterproof film and a third clay layer are arranged on the outside of the wall of the monitoring well, and the third protective layer is geotextile.

[0017] Optionally, polyurea waterproof material is arranged on the inner wall of the pool.

[0018] Optionally, a second clay layer is arranged on the periphery of the pool.

[0019] Optionally, the edge of the waterproof film is embedded between the pool wall or the wall of the monitoring well and the clay layer upwards.

[0020] Optionally, a concrete cushion extending along the length direction of the pool is arranged above the middle position of the first clay layer in the width direction of the pool, the first waterproof film is arranged on the concrete cushion and the first clay layer, flow guide layers are arranged on both sides of the concrete cushion respectively, and flow guide ditches and monitoring wells are arranged on both sides in the width direction of the pool respectively.

[0021] Optionally, the first to third waterproof films are HDPE films.

[0022] The monitoring device for the leakage of the structure has the following beneficial effects:

[0023] (1) The waterproof layer arranged below the flow guide layer can prevent the seepage liquid from seeping into the ground or seeping out along the pool wall, and the seepage liquid does not flow into the monitoring well to cause the misjudgment of the pool leakage.

[0024] (2) The waterproof layer arranged on the periphery of the flow guide ditch and the monitoring well can prevent the underground water from entering the flow guide ditch and the monitoring well to cause the misjudgment of the pool leakage.

[0025] (3) The flow guide layers arranged on both sides of the pool in the downward direction can reduce the length of the flow guide layer, reduce the elevation of the flow guide ditch and the monitoring well, and reduce the investment cost.

[0026] (4) By embedding the edge of the HDPE film between the pool wall or well wall and the clay layer, the HDPE film is fixed firmly, and the waterproof reliability is improved.

[0027] (5) By the communication of the diversion ditch, one monitoring well can be shared for water pools of different elevations, and the investment cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above features and technical advantages of the present application will become more apparent and easier to understand from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.

[0029] Figure 1 is a top view of the monitoring device for leakage of the structure of the embodiment of the present application.

[0030] Figure 2 is Figure 1 is a 1-1 sectional view of

[0031] Figure 3 is a layout schematic diagram of the waterproof layer, the protective layer, the diversion layer and the cushion layer of the embodiment of the present application.

[0032] Figure 4 is a sectional view of the diversion ditch of the embodiment of the present application.

[0033] Figure 5 is a peripheral schematic diagram of the monitoring well of the embodiment of the present application.

[0034] Figure 6 is a schematic diagram of the embodiment of the present application in which the diversion ditch is arranged from the middle to both sides.

[0035] Figure 7 is a sectional view of the diversion ditch arranged from the middle to both sides.

[0036] Figure 8 is Figure 1 is a 2-2 sectional view of

[0037] Figure 9 is a schematic diagram of one communication mode of the diversion ditch and the continuous water pool of different elevations.

[0038] Figure 10 is a schematic diagram of another communication mode of the diversion ditch and the continuous water pool of different elevations. DETAILED DESCRIPTION

[0039] The embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art can appreciate that the described embodiments can be modified in various ways or combinations without departing from the spirit and scope of the present application. Therefore, the drawings and the description are illustrative in nature rather than limiting the scope of protection of the claims. In addition, in the present specification, the drawings are not drawn to scale, and the same reference numerals represent the same parts.

[0040] In the description of the present application, it should be understood that the terms "intermediate", "length", "width", "thickness", "upper", "lower", "left", "right", "horizontal", "bottom", "inner", "outer", "periphery" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] The monitoring device for leakage of the structure of the present application can determine whether the pool leaks by observing the monitoring well when the pool leaks, and the leakage liquid can flow into the monitoring well along the slope of the diversion ditch, thereby avoiding the situation that the underground water seeps into the monitoring well or the diversion ditch, resulting in incorrect monitoring results of the structure leakage. The structure in the present application mainly refers to the full underground pool, the semi-underground pool and the above-ground pool in sewage treatment, and the pool structure as a whole is the structure to be monitored.

[0042] The monitoring device for leakage of the structure of the present application mainly includes a diversion layer 20 having a certain slope, which guides the leakage liquid of the pool to the diversion ditch 50 through a material with a large porosity; a waterproof layer 40 arranged below the diversion layer, which has a water blocking effect to prevent the leakage liquid from flowing into the ground and failing to flow into the diversion ditch; a diversion ditch 50 having a certain slope, which is in communication with the monitoring well 60 at the low end and is used for guiding the leakage liquid therein into the monitoring well; and a monitoring well 60 used for determining whether the pool leaks according to whether the monitoring well has the leakage liquid therein.

[0043] Please refer to Figures 1 to 3At the bottom of the pool 100, from bottom to top, there are waterproof layer 40, protective layer 30, flow guide layer 20 and cushion layer 10. The waterproof layer 40 includes, from bottom to top, first clay layer 402 and first waterproof film 401. The first clay layer 402 has good impermeability, and the first waterproof film 401 can be a HDPE (high-density polyethylene) film, which is a flexible waterproof material with high impermeability, corrosion resistance and weather resistance. The first clay layer 402 has a certain slope, for example, the slope i is 0.005, so that the first waterproof film 401 laid thereon also has the same slope, facilitating the convergence of the leakage liquid.

[0044] For example, the permeability coefficient of the first clay layer 402 is not greater than 1.0x10 -5 cm / s, and the thickness of the first waterproof film 401 is 2mm.

[0045] When the pool leaks, the leakage liquid reaches the first waterproof film 401. Because the first waterproof film 401 has a water-blocking effect, the leakage liquid will not seep into the ground, but will continue to converge along the slope to the flow guide ditch, thereby effectively guiding the leakage liquid to the flow guide ditch.

[0046] To protect the waterproof layer 40 from being damaged by the flow guide layer 20, a first protective layer 30 can also be laid on the waterproof layer 40. Non-woven geotextile can be used. The function of the geotextile protective layer is to block the flow guide layer and the waterproof film, avoiding damage to the waterproof layer by the flow guide layer material. The laid protective layer 30 can maintain the same slope as the waterproof layer.

[0047] The flow guide layer 20 is laid on the protective layer 30 and serves to guide the leakage liquid into the flow guide ditch 50. The flow guide layer 20 can be a material with good permeability and is laid along the slope of the waterproof layer 40, with the low end of the slope being in communication with the flow guide ditch 50. Thus, if the pool bottom leaks, the leakage liquid will flow along the slope into the flow guide ditch 50.

[0048] For example, the flow guide layer 20 can be laid with medium-coarse sand. If the pool bottom of the structure leaks, the leakage liquid will seep downward through the pool bottom cracks. Because there are pores between the sand particles of the medium-coarse sand, these pores will become the flow guide channels for the leakage liquid. The slope of the flow guide layer is consistent with that of the flow guide layer, for example, the slope i of the waterproof layer 40 is 0.005, and the slope i of the flow guide layer is also 0.005, which can ensure that the leakage liquid flows smoothly into the flow guide ditch, and the bottom of the monitoring well and the flow guide ditch is not too deep to increase the total investment. The use of medium-coarse sand for the flow guide layer can make the compaction coefficient reach 0.94, ensuring that the pool bottom foundation compaction coefficient meets the requirements, and the pores between the medium-coarse sand meet the flow guide function of the flow guide layer.

[0049] The flow guide layer material is not limited to medium-coarse sand, but can also be other materials with high water permeability.

[0050] The upper end of the flow guide layer 20 is horizontal to facilitate the arrangement of the cushion layer 10. The cushion layer 10 can be a concrete cushion layer, for example, a 150mm-thick C20 concrete cushion layer, which should extend 100mm beyond the bottom of the pool. The upper end of the cushion layer is in contact with the pool bottom plate, and the lower end is in contact with the flow guide layer.

[0051] As shown in Figure 1 , the flow guide ditch 50 is arranged on one side of the pool 100, and the flow guide ditch 50 has a slope, which can be, for example, 0.005 in Figure 1 . The low end is in communication with the monitoring well 60. This makes the leakage liquid in the flow guide ditch 50 flow into the monitoring well 60 through the flow guide ditch 50. By observing the water outflow in the monitoring well 60, whether the pool is leaking can be monitored. The flow guide ditch can extend parallel to the pool, but the present application does not exclude that the flow guide ditch can extend in other directions, as long as the low end is in communication with the monitoring well 60.

[0052] In some embodiments, referring to Figure 4 , a second waterproof membrane 503, which can be an HDPE membrane, is laid in the flow guide ditch 50, and a second protective layer 502, which can be a non-woven geotextile, is laid inside the second waterproof membrane 503, and pebbles 501 are laid inside the second protective layer 502. The pebbles have large gaps between them and have the function of guiding flow. The second waterproof membrane 503 is made of the same material as the first waterproof membrane 401, which can prevent groundwater from flowing into the monitoring well after seeping into the flow guide ditch, resulting in inaccurate detection results.

[0053] In some embodiments, referring to Figure 5 , the monitoring well 60 is used to monitor whether the pool leaks, and the depth of the monitoring well depends on the pool bottom elevation and the pool width (the extension direction of the flow guide layer). That is, the depth of the monitoring well 60 should be deeper than the depth of the pool, so that the leakage liquid at the bottom of the pool can flow into the monitoring well through the flow guide layer and the flow guide ditch. The outer wall of the monitoring well has a backfill clay layer to prevent groundwater from seeping into the monitoring well and affecting the monitoring results. Specifically, from the inside to the outside of the monitoring well wall 600, a third protective layer 601, a third waterproof membrane 602 and a third clay layer 603 are arranged, the third clay layer 603 has good anti-seepage performance, and the third waterproof membrane 602 can be an HDPE membrane, which can prevent groundwater from seeping into the monitoring well. The third protective layer 601 can be a geotextile to protect the third waterproof membrane 602 from being damaged.

[0054] In some embodiments, the inner surface of the pool can be sprayed with polyurea waterproof coating 70, which has the characteristic of preventing leakage. Specifically, it can be polyurea waterproof coating type II product, and of course other waterproof coating can also be sprayed.

[0055] In some embodiments, a second clay layer 101 is laid around the outer perimeter of the pool, for example, within 1m of the outer wall of the pool, to prevent leachate from the pool wall from flowing into the surrounding soil and contaminating it. The backfilling range can be determined based on soil characteristics and pollutant diffusion patterns, which will not be detailed here. The second clay layer 101 has good impermeability and can prevent pool wall leakage from contaminating the surrounding soil.

[0056] The construction of each clay layer can be carried out using a layered compaction method to ensure that the compaction degree meets the design requirements. To fix the waterproof membrane, the edge of the waterproof membrane can be buried upwards between the pool wall or well wall and the clay layer, preferably 1.2m above the bottom of the pool or well. However, for the first waterproof membrane 401, which is located on the side of the diversion ditch, it does not need to be buried between the pool wall and the clay layer, otherwise it will prevent the leachate from flowing into the diversion ditch. The joints of each HDPE membrane should be welded using a hot-melt welding method to ensure a firm and reliable connection.

[0057] The monitoring process of the leakage monitoring device for this structure is explained below. When leakage occurs at the bottom of the pool, the leaking fluid seeps down to the first waterproof membrane 401. Because the waterproof membrane has a water-blocking function, the leaking fluid cannot continue to seep down and can only continue to flow along the slope of the guide layer to the guide ditch. After entering the guide ditch, the leaking fluid flows along the slope to the monitoring well because the guide ditch has a slope. If water is observed in the monitoring well, it can be determined that leakage has occurred in the pool.

[0058] Furthermore, to ensure more accurate monitoring, the water composition in the monitoring well can be further determined. If it is similar to the water composition inside the structure, it can be determined that the water tank is leaking.

[0059] In some embodiments, for large water tanks, in order to raise the bottom of the diversion ditch and the bottom of the monitoring well and reduce costs, the diversion layer can be sloped from the middle to both sides. Since the length of the diversion ditch is reduced, the bottom of the diversion ditch and the bottom of the monitoring well can be raised.

[0060] like Figure 6 , Figure 7 As shown, a concrete pad 80 can be set in the middle of the width of the pool. Specifically, a first clay layer 402 is first laid at the bottom of the pool, and a concrete pad 80 extending along the length of the pool is set above the first clay layer 402 at the middle position in the width direction of the pool. A first waterproof membrane 401 is laid on the concrete pad and the first clay layer 402. A flow guiding layer 20 can be set on both sides of the concrete pad 80. The bottom plate of the pool is on the flow guiding layers on both sides. It should be noted that the bottom plate can also be a whole that covers the concrete pad 80 and the flow guiding layers on both sides.

[0061] Correspondingly, the water diversion ditch 50 and the monitoring well 60 are arranged on both sides of the pool in the width direction. When there is a crack on the bottom of the pool, if the crack is on the left side of the concrete cushion 80, the seepage liquid will flow into the left water diversion ditch 50 from the left water diversion layer, and then flow into the left monitoring well 60. If the crack is on the right side of the concrete cushion 80, the seepage liquid will flow into the right water diversion ditch 50 from the right water diversion layer, and then flow into the right monitoring well 60.

[0062] For the continuous pool with different elevations, please refer to Figure 8 The pool with the pool bottom elevations of -2.5 m and -3.5 m can be provided with the concrete cushion 80 in the middle of the pool in the width direction. Specifically, first, the first clay layer 402 is laid on the bottom of the pool. For the pool with a smaller depth, the first clay layer laid on the bottom is thicker. The concrete cushion 80 extending along the length direction of the pool is arranged above the first clay layer 402 in the middle of the pool in the width direction, and the concrete cushion 80 is correspondingly undulating according to the depth of the pool. The first waterproof film 401 and the first protective layer 30 are continuously laid on the concrete cushion and the first clay layer 402. The water diversion layer 20 can be arranged on both sides of the concrete cushion 80, and correspondingly, the water diversion ditch 50 and the monitoring well 60 are arranged on both sides of the pool in the width direction.

[0063] For the continuous pool with different elevations, please refer to Figure 9 The water diversion layer on the bottom of the -2.5 m pool can have a slope of 0.005, and the water diversion layer on the bottom of the -3.5 m pool can also have a slope of 0.005. Since the elevations of the bottoms of the pools are different, the low ends of the water diversion layers are also different, and correspondingly, the heights of the water diversion ditches are also different. The water diversion ditch of the -2.5 m pool is above the water diversion ditch of the -3.5 m pool, but the slopes of the water diversion ditches can both be 0.005. The high end of the water diversion ditch of the -3.5 m pool is in communication with the low end of the water diversion ditch of the -2.5 m pool. Thus, the seepage liquid in the water diversion ditch of the pool with a higher elevation can flow into the water diversion ditch of the pool with a lower elevation, and the low end of the water diversion ditch of the pool with a lower elevation is in communication with the monitoring well. Thus, the seepage condition of the continuous pool with different elevations can be detected.

[0064] Alternatively, please refer to Figure 10 The slope of the water diversion layer of the -2.5 m pool can be set to be larger, so that the seepage liquid can flow into the water diversion ditch of the -3.5 m pool.

[0065] It should be noted that the slope of 0.005 of the water diversion layer and the water diversion ditch is only exemplary, and the present application does not limit the value.

[0066] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for monitoring leakage of a structure, characterized in that, The application relates to a water pool leakage detection device. The device comprises a diversion layer arranged below the water pool bottom plate, having a slope, the low end of which is communicated with a diversion ditch; A waterproof layer having a slope is arranged below the diversion layer, used for preventing seepage liquid from flowing into the ground; The diversion ditch has a slope, the low end of which is communicated with a monitoring well, used for guiding the seepage liquid in the diversion ditch into the monitoring well; The monitoring well is used for judging whether the water pool leaks according to whether the inside of the monitoring well has seepage liquid.

2. The monitoring device for leaks in structures of claim 1, wherein, The waterproof layer comprises a first clay layer and a first waterproof film from bottom to top, and a geotextile is arranged as a first protective layer between the first waterproof film and the diversion layer.

3. The monitoring device for leaks in structures of claim 1, wherein, The diversion layer is paved with sand, and the diversion layer is located between the water pool bottom plate and a concrete cushion layer.

4. The monitoring device for leaks in structures of claim 2, wherein, A second waterproof film is paved in the diversion ditch, a second protective layer is further paved on the inside of the second waterproof film, and pebbles are accumulated on the inside of the second protective layer, and the second protective layer is a geotextile.

5. The monitoring device for leaks in structures of claim 4, wherein, A third protective layer, a third waterproof film and a third clay layer are arranged from inside to outside on the outside of the well wall of the monitoring well, and the third protective layer is a geotextile.

6. The apparatus of claim 1, wherein, Polyurea waterproof material is arranged on the inner wall of the water pool.

7. The apparatus of claim 5, wherein the at least one sensor is a pressure sensor. A second clay layer is paved on the periphery of the water pool.

8. The monitoring device for leaks in structures of claim 7, wherein, The edges of the waterproof film are buried upward between the pool wall or well wall and the clay layer.

9. The apparatus of claim 2, wherein, A concrete cushion block extending along the length direction of the water pool is arranged above the middle position of the first clay layer in the width direction of the water pool, the first waterproof film is paved on the concrete cushion block and the first clay layer, diversion layers are arranged on the two sides of the concrete cushion block respectively, and diversion ditches and monitoring wells are arranged on the two sides in the width direction of the water pool respectively.

10. The apparatus of claim 5, wherein, The first to third waterproof films are HDPE films.

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