CN217630124U - Under-film exhaust and drainage device - Google Patents

Abstract

The application discloses drainage device that exhausts under membrane belongs to aqueous vapor processing apparatus field. An under-membrane venting and drainage device for geomembrane anti-seepage systems, comprising: the device comprises an adjusting tank, a well body, a drainage ditch and a geomembrane, wherein the geomembrane covers the adjusting tank, the drainage ditch and the well body; the bottom of the adjusting tank is symmetrically arranged in a slope from two side walls to the center; a well body is arranged at the position close to the bottom of the side wall; the geomembrane extends from the top opening of the well body to the inner wall of the well body to form an inner wall membrane, and the inner wall membrane is provided with an exhaust structure; the bottom of the pool of equalizing basin has seted up the escape canal, and the escape canal includes first ditch and second escape canal, and first ditch is the slope setting, and the incline direction of first ditch is opposite with the incline direction of bottom of the pool, first ditch and well body intercommunication. This application can effectively solve under the geomembrane membrane because groundwater exosmosis and persist gas under the membrane and cause the not smooth problem of drainage exhaust, further eliminate the geomembrane and lead to the risk of breaking the damage because of the physiosis.

Description

Under-film exhaust and drainage device

Technical Field

The application belongs to the technical field of aqueous vapor processing apparatus, concretely relates to drainage device exhausts under membrane.

Background

In recent years, geomembrane (geotextile) coverage is widely applied to an environmental remediation anti-seepage system and gradually becomes a more common and effective remediation means in the actual production construction process. The geomembrane horizontal seepage control has strong adaptability to terrain and geological conditions, convenient construction and simple process, and is widely applied to seepage control treatment in various scenes. Although geomembranes are used as large area flexible geosynthetic material or materials, their low permeability characteristics are often used as an impermeable lining for liquid or gas reservoirs; however, due to various factors, ballooning under the membrane and causing new leakage problems may still occur.

For example, after the geomembrane is covered, a series of problems may be brought along, wherein the biggest hidden trouble is that underground water is leaked out under the geomembrane due to the rise of the underground water level or during the laying process, so that gas and water are possibly stored under the geomembrane, and the geomembrane is inflated and further broken and damaged after a long time.

In the related art, for water seepage under a geomembrane, drainage ditches with certain width and thickness formed by broken stones and stone blocks are arranged under the geomembrane, or drainage blind pipes are arranged for drainage. However, the existing drainage structure cannot rapidly and effectively discharge the seeped water and the trapped air. Therefore, the existing technologies are not perfect enough and are expected to be further improved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problems, the present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the utility model provides a drainage device exhausts under membrane can alleviate the geomembrane under the geomembrane because groundwater exosmosis and the membrane persist gas and cause the not smooth problem of drainage exhaust, can effectively reduce or avoid the geomembrane to lead to the risk of breaking the damage because of the physiosis, can overcome not enough among the prior art.

In order to solve the technical problem, the present application is implemented as follows:

according to one aspect of the present application, there is provided an under-membrane air bleed and drain for a geomembrane anti-seepage system, the under-membrane air bleed and drain comprising: the system comprises an adjusting tank, a well body, a drainage ditch and a geomembrane, wherein the geomembrane covers the adjusting tank, the drainage ditch and the well body;

the adjusting tank comprises a tank bottom and two opposite side walls, the tank bottom is symmetrically arranged in a slope from the two side walls to the center, and the tank bottom has a slope inclining downwards from the side walls to the center of the tank bottom;

the well body is arranged at the position, close to the bottom of the pool, of at least one of the two side walls, part of the well body extends towards the lower part of the pool bottom, and the other part of the well body extends out of the pool bottom;

the top end of the well body is open, the geomembrane covers the outer wall of the well body, the geomembrane extends from the open end to the inner wall of the well body to form an inner wall membrane, and the inner wall membrane is provided with an exhaust structure and used for exhausting gas under the membrane;

the equalizing basin the bottom of the pool has been seted up the escape canal, the escape canal includes first drainage ditch and second escape canal, first drainage ditch with the perpendicular and crossing arrangement in second escape canal, first drainage ditch is the slope setting, just the slope direction of first drainage ditch with the slope opposite direction of bottom of the pool, first drainage ditch with well body intercommunication for discharge the water that will membrane under.

In some embodiments, the first drain ditch has a slope that slopes in a direction from a center of the bottom to the side wall, and the slope of the first drain ditch is less than the slope of the bottom.

In some of these embodiments, the slope of the bottom of the pool is between 0.4% and 0.6%; and/or the inclination of the first drainage ditch is 0.1-0.2%.

In some of these embodiments, the venting structure comprises a vent opening in the inner wall membrane, the vent opening being spaced from the opening of the well by a distance of 4cm to 6cm.

In some embodiments, a drainage opening is formed in a side wall of the well body and is used for communicating with the first drainage ditch; and/or a drainage mechanism is arranged in the well body.

In some embodiments, a strainer is installed at the water outlet; and/or the diameter of the water discharge opening is 20cm-40cm, and the distance between the lower end of the water discharge opening and the bottom end of the first drainage ditch is 5cm-15cm.

In some embodiments, the drainage mechanism includes a drainage pump disposed on an inner wall of the well body, and a first pumping pipe and a second pumping pipe connected to the drainage pump; the first water pumping pipe extends towards the bottom end of the well body, and the distance between the bottom end of the first water pumping pipe and the bottom of the well body is 10cm-30cm; the second water pumping pipe extends towards the opening direction of the well body and extends out of the side wall of the well body to the outside of the well body, and the distance between the top end of the second water pumping pipe and the opening of the well body is 40-60 cm.

In some embodiments, the number of the first drainage ditches is one, and two ends of each first drainage ditch are respectively communicated with the well bodies on two sides; the second escape canal is two, two the spaced equidistance of second escape canal distributes the bottom of a pool center with between the well body, and two the second escape canal respectively with first escape canal is perpendicular and crossing.

In some embodiments, drainage silt-preventing plates are respectively laid on two sides of the first drainage ditch, and granules are arranged inside the first drainage ditch.

In some embodiments, the inside and the upper two sides of the first drainage ditch are provided with granules, drainage silt-preventing plates are laid on the granules on the upper two sides of the first drainage ditch, and the geomembrane covers the drainage silt-preventing plates.

Implement the technical scheme of the utility model, following beneficial effect has at least:

in the embodiment of the application, the provided under-membrane exhaust and drainage device can be applied to a geomembrane anti-seepage system, wherein the bottom of the regulating tank is provided with symmetrically arranged slopes, and the bottom of the regulating tank is provided with a slope inclining downwards from the side wall to the center of the bottom of the regulating tank, namely, the center of the bottom of the regulating tank can be used as the lowest point; a well body is arranged at the position of the pool bottom close to the side wall, namely the high position of the pool bottom; and a drainage ditch is also formed in the bottom of the pool, wherein the first drainage ditch is communicated with the well body and has a slope opposite to the inclination direction of the bottom of the pool. Like this, through the setting of the well body to utilize the different setting of bottom of the pool slope and first ditch slope, realized can exhaust again can the drainage under the membrane, both solved the difficult problem of drainage under the membrane, help realizing the reciprocal cyclic utilization of water resource again.

Therefore, the under-membrane exhaust and drainage device can effectively solve the problem that drainage and exhaust are not smooth due to the fact that underground water seeps outwards and gas is reserved under the membrane under the geomembrane, further eliminates the risk that the geomembrane is broken and damaged due to air inflation, and can break the problem that the traditional single exhaust or drainage can only be selected by one of the two.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a downfilm exhaust and drainage device according to some embodiments of the present invention;

FIG. 2 is a schematic sectional view taken along the line a-a in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line b-b of FIG. 2;

fig. 4 is a schematic structural diagram of a conditioning tank in a membrane lower exhaust and drainage device according to some embodiments of the present invention.

Description of reference numerals:

10-a regulating reservoir; 101-the bottom of the pool; 111-center of pool bottom; 102-a side wall;

20-well body; 201-a water drainage port; 202-a filter screen;

30-a drainage ditch; 301-a first drain ditch; 302-a second drain; 311-drainage silt-preventing plate; 312-pellets;

40-a geomembrane; 401-inner wall membrane; 402-vent hole.

50-a drainage mechanism; 501, draining a pump; 502-a first suction pipe; 503-second suction pipe.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For numerical ranges, between the endpoints of each of the ranges or between the individual points, and between the individual points may be combined with each other to provide one or more new numerical ranges.

It should be noted that the term "and/or"/"used herein is only one kind of association relationship describing associated objects, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone.

The embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

The geomembrane has the advantages of good seepage-proofing performance, strong adaptive deformability, low construction cost, high construction speed and the like, and is widely applied to the field of environmental remediation seepage-proofing engineering of earth and rockfill dams, dykes, carbide slag and the like. For example, in some regions or in some enterprises, large-scale carbide slag mountains exist, which not only occupy valuable land resources, but also pollute soil and shallow groundwater. The non-woven geotextile covers the surface of the carbide slag pile, so that dust raising phenomenon can be controlled, but a part of leaked underground exists for years due to a sewage ditch around the slag mountain formed by gathering of unorganized runoff on the slag mountain caused by rainfall, the alkalinity of eluviated water exceeds the standard, a certain degree of pollution is caused to shallow underground water and soil, and the balance of an ecological hydrological environment system is damaged. In order to avoid pollution, anti-seepage and anti-loss measures are needed to ensure that the water quality reaches the standard so as to form a good ecological environment. Based on this, the utility model people of this application adopt geomembrane (be the geomembrane of high density polyethylene material promptly like the HDPE) double slit hot melt welding laying technology to weld, carry out the membrane to the naked carbide slag in scene and cover. The HDPE geomembrane has stronger weather resistance and ageing resistance, can be used for a long time in a naked way to keep the original performance, and has better chemical stability, higher rigidity and toughness, good mechanical strength, good environmental stress cracking resistance and good tearing strength resistance; in addition, as the density increases, the mechanical properties and barrier properties will increase accordingly, heat resistance, and tensile strength will also be higher; can resist corrosion of acid, alkali, organic solvent and the like, and is a better choice for serving as an impermeable environment-friendly material. On this basis, the utility model discloses the people still builds facilities such as total equalizing basin in relevant place and realizes ladder retaining and water conservancy diversion, blocks rainwater and carbide slag pile body direct contact, disposes pH on-line monitoring system and adds the medicine pond simultaneously, realizes rainwater real-time supervision, the quality of water that exceeds standard administers and prevents the damaged prevention of osmosis membrane. However, there is a problem in that gas is left under the membrane during the process of laying and welding the HDPE geomembrane, and there is a high possibility that water is accumulated under the membrane along with the infiltration of groundwater, which causes a safety hazard to the quality of the membrane after the inspection and acceptance and during the maintenance and quality guarantee period.

In view of this, the present application provides a novel device and a novel process technology for collecting, exhausting and draining gas under a geomembrane anti-seepage covering membrane, in order to solve the problem of unsmooth drainage and exhaust caused by the seepage of groundwater and the gas remaining under the membrane under the geomembrane, and reduce or avoid the risk of rupture and damage of the geomembrane due to gas expansion. See below for a description of specific solutions.

Referring to fig. 1 to 4, in some embodiments of the present application, there is provided an under-membrane air evacuation and drainage device for a geomembrane anti-seepage system, the under-membrane air evacuation and drainage device comprising: the device comprises a regulating tank 10, a well body 20, a drainage ditch 30 and a geomembrane 40, wherein the geomembrane 40 covers the regulating tank 10, the drainage ditch 30 and the well body 20. The geomembrane 40 may be an HPDE geomembrane.

The under-membrane air exhaust and drainage device provided by the embodiment can be applied to the field of an anti-seepage system for repairing a geomembrane environment, for example, the device can be applied to the above-mentioned carbide slag pollution treatment project, and certainly, the device can also be applied to other fields, and the device is not limited in the embodiment.

Specifically, in the provided under-membrane exhaust and drainage device, the regulation tank 10 comprises a tank bottom 101 and two opposite side walls 102, the tank bottom 101 is symmetrically arranged in a slope from the two side walls 102 to the center, and the tank bottom 101 has a slope which is inclined downwards from the side walls 102 to the center 111 of the tank bottom.

The conditioning tank 10 may be a conditioning tank 10 having a substantially square shape, and the conditioning tank 10 includes a tank bottom 101 and a plurality of side walls 102 disposed around the tank bottom 101. For example, the adjusting tank 10 has two side walls 102 disposed oppositely on the left and right sides of the tank bottom 101, and the adjusting tank 10 also has two side walls disposed oppositely on the front and rear sides. The present embodiment will be described below mainly with reference to two side walls provided on the left and right sides of the conditioning tank 10. Specifically, the two side walls 102 provided on the left and right sides of the bottom 101 of the conditioning tank 10 may be a first side wall and a second side wall, respectively. The bottom 101 of the adjusting tank 10 is a symmetrically disposed bottom with a slope, and the bottom 101 has a slope inclined along a first side wall to the center 111 of the bottom and a slope inclined along a second side wall to the center 111 of the bottom.

In this embodiment, the center position of the adjustment tank 10 in the project site is set as the lowest point of the elevation, and the left and right sides of the tank bottom 101 are respectively set to be gently sloping toward the center point of the tank bottom, so that the tank bottom 101 is symmetrically inclined from the side walls 102 at both sides to the center direction, the center 111 of the tank bottom can be used as the lowest point, and the position of the tank bottom 101 near the side walls 102 is the high point.

In other embodiments, the adjustment tank 10 may have other shapes and structures, which are not limited in this embodiment.

The structure of the regulating reservoir 10 is symmetrical, and the structures of both sides may be the same, and the following description will mainly take one side of the regulating reservoir 10, such as the left side or the right side, as an example.

In this embodiment, the well 20 is disposed near the bottom 101 of at least one of the two side walls 102, for example, one well 20 may be disposed near the bottom 101 of the first side wall, and one well 20 may be disposed near the bottom 101 of the second side wall, that is, one well 20 may be disposed at each of the high points of the two sides of the bottom 101, and the wells 20 may be located at the middle of the front and rear sides. Alternatively, in other embodiments, a well 20 may be disposed at the bottom 101 near the first or second sidewall. Wherein, a part of the well body 20 extends to the lower part of the pool bottom 101, and the other part of the well body 20 extends to the upper part of the pool bottom 101. It should be understood that the two wells on the left and right sides may have the same or similar structure, and the following description will mainly use one well as an example.

Optionally, the well body 20 is a hollow well body, and the well body 20 may be a cement hollow well and may function as a pumping well.

Alternatively, the well 20 may have an inner diameter of 0.8m to 1.6m and a height of 4m to 5m. Illustratively, the well 20 may have an inner diameter of 1m and a height of 4.5m. In addition, in other embodiments, the inner diameter and the height of the well 20 can be set selectively according to different practical situations.

Optionally, the well 20 is located at the bottom of the well 20 at a position about 1m below the bottom of the conditioning tank 10. Optionally, an aerial ladder may be disposed in the well body 20 to facilitate the up-and-down movement of the operator.

In this embodiment, the top end of the well body 20 is open, the geomembrane 40 covers the outer wall of the well body 20, the geomembrane 40 extends from the open end to the inner wall of the well body 20 to form an inner wall membrane 401, and the inner wall membrane 401 is provided with an exhaust structure for exhausting gas under the membrane. Optionally, a well cover may be disposed at the opening of the well body 20.

The above-mentioned HPDE geomembrane can cover the equalizing basin 10 completely, and the outer wall of the well body 20 can cover the HPDE geomembrane completely and is connected with the bottom 101 of the equalizing basin 10, and the geomembrane 40 above the well body 20 can leave a small amount of allowance and be rolled to the inner wall of the well body 20 and fixed. That is, the geomembrane 40 may extend from the opening of the well body 20 to the inner wall of the well body 20 to form the inner wall membrane 401, and the geomembrane 40 may be fixedly connected with the inner wall of the well body 20. The provision of a venting structure in the inner wall membrane 401 may enable venting of the gas under the membrane.

In this embodiment, the drainage ditch 30 has been seted up to the bottom 101 of equalizing basin 10, and this drainage ditch 30 includes first drainage ditch 301 and second drainage ditch 302, and first drainage ditch 301 is perpendicular and crossing the arrangement with second drainage ditch 302, and first drainage ditch 301 is the slope setting, and the slope direction of first drainage ditch 301 is opposite with the slope direction of bottom 101, and first drainage ditch 301 communicates with well body 20 for discharge the water under the membrane.

The first drain channel 301 may be formed in the left-right direction, the second drain channel 302 may be formed in the front-rear direction, both ends of the first drain channel 301 may be communicated with the left and right well bodies 20, respectively, and the second drain channel 302 may be communicated with the first drain channel 301. The first drainage channel 301 is inclined in a direction opposite to the inclination direction of the bottom 101, that is, the first drainage channel 301 may be inclined from the center 111 of the bottom toward the side wall 102, and the first drainage channel 301 may be inclined in a direction opposite to the inclination direction of the bottom 101. The second drainage ditch 302 can be used for collecting the accumulated water, the accumulated water flows into the first drainage ditch 301, and the accumulated water flows into the well body 20, so that the accumulated water under the membrane can be drained.

Therefore, based on the arrangement, the under-membrane air exhaust and drainage device provided by the embodiment can effectively solve the problem that drainage and air exhaust are unsmooth due to the fact that underground water seeps outwards and air remains under the membrane under the geomembrane, further eliminates the risk of rupture and damage of the geomembrane due to air inflation, and can also break the problem that only one of the single air exhaust or drainage can be selected in the traditional sense. Specifically, the bottom 101 of the adjusting tank 10 of the under-film exhaust and drainage device is provided with symmetrically arranged slopes, the center 111 of the bottom can be used as the lowest point, the position of the bottom 101 close to the side wall 102 can be used as a high point, and both exhaust and drainage under the film are realized by using the slope of the bottom 101 opposite to the slope of the bottom of the first drainage ditch 301. Since the slope of the floor 101 slopes downwardly from the side walls 102 to the center 111 of the floor, i.e., the slope of the floor 101 increases gradually toward the well 20, the sub-membrane gases can flow gradually along the floor 101 toward the well 20 and can be vented through the vent structure in the inner wall membrane 401. The accumulated water under the membrane can be collected into a first drainage ditch 301 (main drainage ditch) in the left-right direction through a second drainage ditch 302 in the front-back direction, and the accumulated water flows into the well body 20 by utilizing the different arrangement of the gradient of the pool bottom 101 and the gradient of the first drainage ditch 301, so that the accumulated water can be discharged. Therefore, the air exhaust and water drainage under the film are realized, the problem of water drainage under the film is solved, and the reciprocating cyclic utilization of water resources is facilitated.

Further, in some preferred embodiments of the present invention, the first drain channel 301 is filled with the aggregate 312; thus, when the accumulated water is collected into the first drainage channel 301 through the second drainage channel 302, the filled granules 312 can effectively prevent the problem of poor circulation of the water flow due to clogging of sludge. Further, in some preferred embodiments of the present invention, a drainage mechanism 50 is provided in the well body 20; like this, when ponding in the first ditch 301 flows into the well through outlet 201, when the well ponding reaches a take the altitude, drainage mechanism 50 (like automatic drainage pump) can pass through the drain pipe according to the liquid level with the ponding in the well and take out to equalizing basin 10 along the wall of a well export, has both solved the difficult problem of membrane drainage, has realized the reciprocal cyclic utilization of water resource again.

In some embodiments, the first drain channel 301 has a slope that slopes in a direction from the center 111 of the floor to the side wall 102, and the slope of the first drain channel 301 is less than the slope of the floor 101.

The first drain 301 has a slope opposite to the slope of the pool bottom 101, and the slope of the first drain 301 has a slope smaller than the slope of the pool bottom 101, which helps to allow accumulated water to flow from the first drain 301 to the well 20 and helps to allow trapped air to flow along the pool bottom 101 to the well 20 and to be discharged through the air discharge structure on the inner wall membrane 401. Thereby utilize the difference of bottom of the pool 101 slope and the first gutter 301 slope, especially the slope of first gutter 301 is less than the slope of bottom of the pool 101, can realize the demand that can drainage and exhaust under the geomembrane.

Optionally, the tank bottom 101 is inclined downwards from the side wall 102 to the center 111 of the tank bottom, and the inclination of the tank bottom 101 is 0.4% -0.6%. Illustratively, the slope of the pond bottom 101 may be 0.4%, 0.5%, 0.6%, etc., preferably 0.5%

Optionally, the first drainage channel 301 is inclined upward from the sidewall 102 to the center 111 of the pool bottom, and the inclination of the first drainage channel 301 is 0.1% -0.2%. For example, the slope of the first drain channel 301 may be 0.1%, 0.15%, 0.2%, etc., preferably 0.1%.

The slope of the pool bottom or the slope of the first drainage channel 301 should not be too large or too small, so as to avoid affecting the air exhaust or drainage effect or affecting the anti-seepage covering effect of the geomembrane.

In some embodiments, the venting structure comprises a vent 402 opening in the inner wall membrane 401, the distance between the vent 402 and the opening of the well 20 being 4cm to 6cm.

The inner wall film 401 is provided with the vent holes 402 to serve as a vent structure, so that the structure is simple, the processing is convenient, and the gas can be discharged. Optionally, the distance between the vent 402 and the opening (top end) of the well 20 is 4cm to 6cm, and illustratively, the distance may be 4cm, 4.5cm, 5cm, 5.5cm, 6cm, etc., preferably 5cm. Within this distance range, the exhaust is facilitated, and the exhaust efficiency can be improved.

In addition, other types of exhaust structures may also be adopted, and the specific structure or type of the exhaust structure is not limited in this embodiment, and other structural manners may also be known by those skilled in the art, and are not described herein again. In addition, in other embodiments, the distance between the exhaust hole 402 and the opening of the well body 20 can be adjusted according to actual conditions.

In some embodiments, there is one first drainage ditch 301, and both ends of the first drainage ditch 301 are respectively communicated with the wells 20 on both sides; the number of the second drainage ditches 302 is two, the two second drainage ditches 302 are equidistantly distributed between the pool bottom center 111 and the well body 20 at intervals, and the two second drainage ditches 302 are perpendicular to and intersect with the first drainage ditch 301.

Alternatively, the width of the first drain channel 301 may be about 50 cm. Alternatively, the second drainage ditch 302 may be two drainage ditches of 50 × 50cm.

The two second drainage ditches 302 can be equidistantly distributed between the center 111 of the pool bottom and the well body 20, and can be used for realizing better collection of accumulated water under the membrane. The two front-rear direction second drainage ditches 302 are communicated with one left-right direction first drainage ditch 301.

In some embodiments, drainage silt-proof boards 311 are respectively laid on both sides of the first drainage ditch 301, and granules 312 are disposed inside the first drainage ditch 301. Alternatively, the granules 312 are disposed inside and above the first drainage ditch 301, and the drainage silt preventing plate 311 is laid on the granules 312 above the first drainage ditch 301, and the geomembrane 40 covers the drainage silt preventing plate 311.

The drainage silt-preventing plates 311 are laid on both sides of the first drainage ditch 301 to be separated from the silt in the external engineering, and the ditch of the first drainage ditch 301 is filled with the aggregate 312, so that the accumulated water in the ditch can smoothly circulate and cannot be blocked by the silt. Further, the first drainage ditch 301 may be filled with the granular material 312, and the drainage silt preventing plate 311 may be laid on the granular material 312, followed by coating the drainage silt preventing plate 311 with a film.

Thus, the problem of poor circulation caused by sludge blockage during drainage can be effectively solved by filling the granules 312 in the first drainage channel 301. Moreover, the drainage silt-preventing plate 311 can be used as a practical permeable material, and can effectively collect the extravasated water into the first drainage channel 301.

In some embodiments, the side wall of the well 20 is opened with a drain opening 201 for communicating with the first drain ditch 301.

In order to communicate the well body 20 with the first drain channel 301, a drain opening 201 needs to be formed in a side wall of the well body 20 so that water flows from the first drain channel 301 into the well body 20.

Optionally, a filter screen 202 is installed at the drain opening 201. In this way, the granular material 312 is prevented from falling into the well body 20, and the function of effectively intercepting other impurities can be achieved.

Optionally, the diameter of the drainage opening 201 is 20cm-40cm. Illustratively, the diameter of the drain opening 201 may be 20cm, 30cm, 40cm, etc., preferably 30cm. The diameter of the drain opening 201 should not be too large or too small to avoid affecting the water flow speed or the drainage effect.

Optionally, the distance between the lower end of the drain opening 201 and the bottom end of the first drain ditch 301 is 5cm-15cm. Illustratively, the distance between the lower end of the drain opening 201 and the bottom end of the first drain groove 301 may be 5cm, 6cm, 8cm, 10cm, 12cm, 15cm, or the like, preferably 10cm. In the embodiment, the surplus of about 10cm is reserved below the well wall drainage opening 201, so that the drainage opening 201 can be effectively prevented from being blocked by sludge.

Therefore, the inner wall of the lower part of the pool bottom 101 of the well body 20 is provided with a drain opening 201 with the length of about 30cm, the lower part of the inner wall is provided with a margin of about 10cm and is communicated with the first drainage channel 301, and the filter screen 202 is arranged at the drain opening 201, so that the granular materials can be prevented from falling into the well body, and the drain opening 201 can be effectively prevented from being blocked by silt.

In some embodiments, a drainage mechanism 50 is disposed within the well body 20. By providing the drainage mechanism 50 in the well body 20, the accumulated water in the well body 20 can be drained to the outside through the drainage mechanism 50. Alternatively, the drainage mechanism 50 may adopt an automatic drainage mechanism, which can automatically drain water according to the level of the liquid.

Optionally, the drainage mechanism 50 includes a drainage pump 501 disposed on the inner wall of the well body 20, and a first pumping pipe 502 and a second pumping pipe 503 connected to the drainage pump 501; the first pumping pipe 502 extends towards the bottom end of the well body 20, and the second pumping pipe 503 extends towards the top end of the well body 20 and extends out of the side wall of the well body 20.

The drainage pump 501 may be an automatic drainage pump, the automatic drainage mechanism 50 may automatically drain water according to the level of the liquid, and the structure and the operation principle of the automatic drainage pump refer to the prior art, which is not limited in this embodiment.

Two ends of the drainage pump 501 may be respectively connected to a first drainage pipe 502 and a second drainage pipe 503, and the first drainage pipe and the second drainage pipe may be PPR drainage pipes; if the first end of the drainage pump 501 extends toward the bottom end of the well 20 through the first pumping pipe 502, the second end of the drainage pump 501 extends toward the top end of the well 20, i.e. the opening direction, through the second pumping pipe 503, and the second pumping pipe 503 bends to extend out of the well 20 from the sidewall of the well 20 to communicate with the outside. In this way, after the accumulated water under the membrane is collected to a certain amount in the well body 20, the drainage pump 501 can be started, and the accumulated water is pumped into the regulating reservoir 10 through the drainage pump 501, the first water pumping pipe 502 and the second water pumping pipe 503.

Therefore, the automatic drainage mechanism 50 is arranged in the well body 20, the automatic drainage mechanism 50 in the well body 20 can automatically realize external drainage back to the pool according to the accumulated water condition in the well body 20, all processes are completed in the well, and the problem that the insertion pipe cannot be conveniently drained due to the limitation of the well cover is avoided. In addition, the automatic drainage mechanism 50 pumps the accumulated water in the well body 20 into the regulating reservoir 10 along the outlet of the well wall through the second water pumping pipe 503, which not only solves the problem of under-membrane drainage, but also realizes the reciprocating cyclic utilization of water resources.

Optionally, the distance between the bottom end of the first pumping pipe 502 and the bottom of the well body 20 is 10cm-30cm. Illustratively, the distance between the bottom end of the first pumping tube 502 and the bottom of the well body 20 may be 10cm, 15cm, 20cm, 25cm, 30cm, etc., preferably 20cm. Therefore, the water discharging device is more beneficial to realizing smooth water discharging and can improve the water discharging effect and efficiency.

Optionally, the distance between the top end of the second pumping pipe 503 and the opening of the well body 20 is 40cm-60cm. Illustratively, the distance between the top end of the second pumping tube 503 and the opening of the well body 20 may be 40cm, 45cm, 50cm, 55cm, 60cm, etc., preferably 60cm. Therefore, the water discharging device is more beneficial to realizing smooth water discharging and can improve the water discharging effect and efficiency.

In some embodiments, there is also provided an under-membrane vent drain method, comprising:

providing a regulating reservoir 10, wherein the regulating reservoir 10 comprises a reservoir bottom 101 and two oppositely arranged side walls 102, the reservoir bottom 101 is arranged in a symmetrical slope from the two side walls 102 to the center direction, and the reservoir bottom 101 has a slope which is downwards inclined from the side walls 102 to the center 111 of the reservoir bottom;

a well body 20 is arranged at a position close to the pool bottom 101 of at least one side wall 102 of the two side walls 102, a part of the well body 20 extends towards the lower part of the pool bottom 101, and the other part of the well body 20 extends out of the pool bottom 101;

a drainage ditch is formed in the bottom 101 of the adjusting tank 10, the drainage ditch comprises a first drainage ditch 301 and a second drainage ditch 302, the first drainage ditch 301 and the second drainage ditch 302 are arranged vertically and crosswise, the first drainage ditch 301 is arranged in an inclined manner, the inclined direction of the first drainage ditch 301 is opposite to that of the bottom 101, and the first drainage ditch 301 is communicated with the well body 20;

the adjusting tank 10, the drainage ditch and the well body 20 are all covered with geomembranes 40;

the top end of the well body 20 is open, the geomembrane 40 extends from the open end to the inner wall of the well body 20 to form an inner wall membrane 401, the inner wall membrane 401 is provided with an exhaust structure, and gas under the membrane is exhausted by means of the gradient of the bottom 101 of the regulating tank 10, the well body 20 and the exhaust structure; the inclination direction of the first drainage ditch 301 is opposite to the inclination direction of the pond bottom 101, and the water under the membrane is discharged through the second drainage ditch 302, the first drainage ditch 301 and the well body 20 in sequence.

It should be understood that the under-film air and water discharging method and the aforementioned under-film air and water discharging device are based on the same concept, and reference may be made to the aforementioned description of the under-film air and water discharging device regarding the device structure, connection and the like, and the under-film air and water discharging method at least has all the features and advantages of the aforementioned under-film air and water discharging device, and will not be described herein again.

Those not described in detail in this specification are within the skill of the art.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience of description and simplification of 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, should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An under-membrane exhaust and drainage device for a geomembrane anti-seepage system, the under-membrane exhaust and drainage device comprising: the device comprises an adjusting tank, a well body, a drainage ditch and a geomembrane, wherein the geomembrane covers the adjusting tank, the drainage ditch and the well body;

the adjusting tank comprises a tank bottom and two oppositely arranged side walls, the tank bottom is symmetrically arranged in a slope from the two side walls to the center, and the tank bottom has a slope which is downwards inclined from the side walls to the center of the tank bottom;

the well body is arranged at the position, close to the bottom of the pool, of at least one of the two side walls, part of the well body extends towards the lower part of the pool bottom, and the other part of the well body extends out of the pool bottom;

the top end of the well body is open, the geomembrane covers the outer wall of the well body, the geomembrane extends from the open end to the inner wall of the well body to form an inner wall membrane, and the inner wall membrane is provided with an exhaust structure and used for exhausting gas under the membrane;

the equalizing basin the bottom of the pool has been seted up the escape canal, the escape canal includes first drainage ditch and second escape canal, first drainage ditch with the perpendicular and crossing arrangement in second escape canal, first drainage ditch is the slope setting, just the slope direction of first drainage ditch with the slope opposite direction of bottom of the pool, first drainage ditch with well body intercommunication for discharge the water that will membrane under.

2. The under-film exhaust and drainage device according to claim 1, wherein the first drainage ditch has a slope that slopes in a direction from the center of the pool bottom to the side wall, and the slope of the first drainage ditch is smaller than the slope of the pool bottom.

3. The under-film air exhaust and drainage device according to claim 2, characterized in that the inclination of the pond bottom is 0.4% -0.6%;

and/or the inclination of the first drainage ditch is 0.1-0.2%.

4. The under-film exhaust and drainage device as claimed in claim 1, wherein the exhaust structure comprises an exhaust hole opened in the inner wall film, and the distance between the exhaust hole and the opening of the well body is 4cm-6cm.

5. The under-film exhaust and drainage device as claimed in claim 1, wherein a drain opening is formed in a side wall of the well body and used for communicating with the first drain ditch;

and/or a drainage mechanism is arranged in the well body.

6. The under-film air exhaust and drainage device according to claim 5, wherein a filter screen is installed at the water discharge opening;

and/or the diameter of the water discharge opening is 20cm-40cm, and the distance between the lower end of the water discharge opening and the bottom end of the first drainage ditch is 5cm-15cm.

7. The under-film air exhaust and drainage device according to claim 5, wherein the drainage mechanism comprises a drainage pump arranged on the inner wall of the well body, and a first suction pipe and a second suction pipe connected to the drainage pump;

the first water pumping pipe extends towards the bottom end of the well body, and the distance between the bottom end of the first water pumping pipe and the bottom of the well body is 10cm-30cm; the second water pumping pipe extends towards the opening direction of the well body and extends out of the side wall of the well body to the outside of the well body, and the distance between the top end of the second water pumping pipe and the opening of the well body is 40-60 cm.

8. The under-film exhaust and drainage device according to any one of claims 1 to 7, wherein the number of the first drainage ditches is one, and two ends of each first drainage ditch are respectively communicated with the wells on two sides; the second escape canal is two, two the spaced equidistance of second escape canal distributes the bottom of a pool center with between the well body, and two the second escape canal respectively with first escape canal is perpendicular and crossing.

9. The under-film exhaust and drainage device according to any one of claims 1 to 7, wherein drainage and silt prevention plates are laid on two sides of the first drainage ditch, and granules are arranged inside the first drainage ditch.

10. The under-membrane exhaust and drainage device according to claim 9, wherein granules are arranged inside and on two sides above the first drainage ditch, a drainage silt preventing plate is laid on the granules on the two sides above the first drainage ditch, and the geomembrane is covered on the drainage silt preventing plate.

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