CN210395452U - Seepage-proofing structure for leakage monitoring system - Google Patents
Seepage-proofing structure for leakage monitoring system Download PDFInfo
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- CN210395452U CN210395452U CN201921044169.1U CN201921044169U CN210395452U CN 210395452 U CN210395452 U CN 210395452U CN 201921044169 U CN201921044169 U CN 201921044169U CN 210395452 U CN210395452 U CN 210395452U
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Abstract
The utility model relates to an seepage prevention structure for leakage monitoring system, it sets up the equipotential layer that contains electrically conductive geotechnological cloth and the flexible monitoring electrode of the electrically connected of electrically conductive fiber line with electrically conductive geotechnological cloth in seepage prevention structure, perhaps contain the equipotential layer of the compound geotechnological drainage network of electrically conductive geotechnological and the flexible monitoring electrode of the electrically connected of electrically conductive fiber line with the compound geotechnological drainage network of electrically conductive geotechnological, can carry out leakage detection more accurately, and flexible monitoring electrode is made by non-metallic conductive material, can prevent acid-base and electrochemical corrosion, make this structure can use for a long time.
Description
Technical Field
The application relates to the technical field of leakage monitoring systems, in particular to an anti-seepage structure for a leakage monitoring system.
Background
With the rapid development of economic construction in China and the increasing improvement of the living standard of people, more and more garbage needs to be buried, and the detection and monitoring of the garbage leachate leakage are necessary work for protecting the water and soil environment around the landfill. The bottom of the traditional refuse landfill is not always subjected to anti-seepage treatment, and the refuse leachate leaks into the underground soil layer to pollute the surrounding underground water and soil; although the modern sanitary refuse landfill is subjected to anti-seepage treatment, a geomembrane and a clay layer are laid at the bottom of the landfill, the geomembrane is difficult to ensure that no holes or cracks exist due to the influence of factors such as construction, and the clay layer is easy to generate cracks if the treatment is not good; even in a landfill site having a double-layer impermeable treatment, it is sometimes difficult to ensure that leachate leakage does not occur.
For the situation of garbage leachate leakage, the traditional monitoring methods comprise two methods: firstly, drilling a water quality observation well in an affected area of a landfill area, extracting an underground water sample, and detecting whether leakage exists or not by using a method for comparing an uncontaminated water sample with a possibly contaminated water sample; and secondly, pumping water samples of underground water from a drainage pipeline for analysis and comparison in a landfill site provided with a double-layer drainage system. The first monitoring method is not easy to continuously monitor, if leakage is monitored, water and soil in a certain range are always polluted, the monitoring method is time-consuming and labor-consuming, only the damage and leakage of the geomembrane of the landfill site can be determined, and the position of the leak cannot be positioned; the second monitoring method is not easy to realize continuous monitoring, and the holes of the drainage pipeline are blocked by the broken stones dissolved by the leachate, so that sampling monitoring is difficult.
Because the common high-density polyethylene (HDPE) film is a common high-density polyethylene film, the HDPE film can be buried underground after being used in engineering, and whether the HDPE film is damaged or broken later or even torn by external force cannot be seen by workers, and the HDPE film can be passively remedied only after a leakage accident occurs. However, the underground construction area is huge, and the problem occurs and the positioning cannot be carried out in time, so that the loss is further enlarged.
Among the correlation technique, the chinese utility model patent of granted bulletin number CN201762735U discloses a waste water liquid storage tank seepage detection's electrically conductive geotechnological cloth structure, includes groundwater collection drainage guide system, foundation layer, supplementary barrier layer, electrically conductive geotechnological cloth, main barrier layer and inverted filter from supreme down in proper order. According to different projects, the positions and the number of detection points are preset, the detection points are connected to the conductive geotextile through special equipment, because the resistance of the conductive geotextile can be changed after the conductive geotextile is soaked by liquid, when the conductive geotextile is not soaked by the seepage liquid, the resistance of the conductive geotextile is a constant value generally, if the waste water leaks, the special equipment connected to the conductive geotextile can detect the change of the resistance in real time, therefore, the leakage can be found out effectively in time, and the positions of the leakage points can be determined through the data comparison of the detection points at different positions.
The inventor finds that the technical scheme of the patent has the defect of inaccurate monitoring.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides an impermeable structure for a leak monitoring system.
In a first aspect, the present application provides an impermeable structure for a leak monitoring system, comprising: the impermeable layer is laid on the field bottom and/or the side slope and comprises bentonite pads or clay; the equipotential layer is laid on the impervious layer and comprises conductive geotextile; the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotextile, are made of non-metal conductive materials and are used for feeding back and transmitting potential data to the leakage monitoring system; and the anti-seepage film is laid on the equipotential layer connected with the flexible monitoring electrode.
In certain embodiments, the electrically conductive geotextile comprises electrically conductive fiber threads and a nonwoven geotextile, wherein the electrically conductive fiber threads are cross-stitched to the nonwoven geotextile and the electrically conductive fiber threads are uniformly arranged.
In certain embodiments, the conductive fiber threads are carbon conductive fibers or graphite fibers.
In a second aspect, the present application provides an impermeable structure for a leak monitoring system, comprising: the impermeable layer is laid on the field bottom and/or the side slope and comprises bentonite pads or clay; the equipotential layer is laid on the impervious layer and comprises an electric conduction geotechnical composite geotechnical drainage network; the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotechnical composite geotechnical drainage network, are made of non-metal conductive materials and are used for feeding back and transmitting potential data to the leakage monitoring system; and the anti-seepage film is laid on the equipotential layer connected with the flexible monitoring electrode.
In some embodiments, an electrically conductive geocomposite geodrainage mesh comprises: the geotextile comprises conductive fiber threads and a first non-woven geotextile, a geotextile drainage net and a second non-woven geotextile, wherein the conductive fiber threads are cross-stitched on the first non-woven geotextile; the conductive geotextile is thermally bonded on one surface of the geotechnical drainage network, and the other surface of the geotechnical drainage network is thermally bonded with the second non-woven geotextile, wherein the second non-woven geotextile is the conductive geotextile or the non-conductive geotextile.
In a third aspect, the present application provides an impermeable structure for a leak monitoring system, comprising: the first impermeable membrane is laid on the foundation layer of the field bottom and/or the side slope; the equipotential layer is laid on the first impermeable membrane and comprises conductive geotextile; the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotextile, are made of non-metal conductive materials and are used for feeding back and transmitting potential data to the leakage monitoring system; the second impermeable membrane is laid on the equipotential layer connected with the flexible monitoring electrode; the non-woven geotextile layer is laid on the second impermeable membrane; and the gravel guide and discharge layer is paved on the non-woven geotextile layer.
In certain embodiments, the electrically conductive geotextile comprises electrically conductive fiber threads and a nonwoven geotextile, wherein the electrically conductive fiber threads are cross-stitched to the nonwoven geotextile and the electrically conductive fiber threads are uniformly arranged.
In certain embodiments, the conductive fiber threads are carbon conductive fibers or graphite fibers.
In a fourth aspect, the present application provides an impermeable structure for a leak monitoring system, comprising: the first impermeable membrane is laid on the foundation layer of the field bottom and/or the side slope; the equipotential layer is laid on the first impermeable membrane and comprises a conductive geotechnical composite geotechnical drainage network; the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotechnical composite geotechnical drainage network, are made of non-metal conductive materials and are used for feeding back and transmitting potential data to the leakage monitoring system; the second impermeable membrane is laid on the equipotential layer connected with the flexible monitoring electrode; the non-woven geotextile layer is laid on the second impermeable membrane; and the gravel guide and discharge layer is paved on the non-woven geotextile layer.
In some embodiments, an electrically conductive geocomposite geodrainage mesh comprises: the geotextile comprises conductive fiber threads and a first non-woven geotextile, a geotextile drainage net and a second non-woven geotextile, wherein the conductive fiber threads are cross-stitched on the first non-woven geotextile; the conductive geotextile is thermally bonded on one surface of the geotechnical drainage network, and the other surface of the geotechnical drainage network is thermally bonded with the second non-woven geotextile, wherein the second non-woven geotextile is the conductive geotextile or the non-conductive geotextile.
This structure that this application embodiment provided sets up the equipotential layer that contains electrically conductive geotechnological cloth and the flexible monitoring electrode of the electrically connected of electrically conductive fiber line with electrically conductive geotechnological cloth in seepage prevention structure, perhaps contain the equipotential layer of the compound geotechnological drainage network of electrically conductive geotechnological and the flexible monitoring electrode of the electrically connected of electrically conductive fiber line with the compound geotechnological drainage network of electrically conductive geotechnological, can carry out leakage detection more accurately, and flexible monitoring electrode is made by non-metallic conductive material, can prevent acid-base and electrochemical corrosion, make this structure can use for a long time.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of an anti-seepage structure for a leakage monitoring system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of an electrically conductive geotextile according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an embodiment of an electrically conductive geocomposite drainage network according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structure view of another embodiment of an anti-seepage structure for a leakage monitoring system according to an embodiment of the present invention; and
fig. 5 is a schematic distribution diagram of a flexible monitoring electrode according to an embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "part", or "unit" used to denote elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
The terms "upper", "lower", "left", "right", "inner", "outer", and the like refer to orientations or positional relationships based on the drawings, or the orientations or positional relationships that are conventionally used to place the products of the present invention, and are used for convenience in describing the present invention and simplifying the description, but 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 present invention.
Furthermore, the terms "vertical" and the like do not require absolute perpendicularity between the components, but may be slightly inclined. Such as "vertical" merely means that the direction is relatively more vertical and does not mean that the structure must be perfectly vertical, but may be slightly inclined.
In the description of the present invention, it is also to be understood that the terms "disposed," "mounted," "connected," and the like are intended to be construed broadly unless otherwise specifically indicated and limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment of the application provides an seepage prevention structure for leakage monitoring system, set up the equipotential layer that contains electrically conductive geotechnological cloth and the flexible monitoring electrode of the electrical connection of conductive fiber line with electrically conductive geotechnological cloth in seepage prevention structure, perhaps contain the equipotential layer of the compound geotechnological drainage network of electrically conductive geotechnological and the flexible monitoring electrode of the electrical connection of conductive fiber line with the compound geotechnological drainage network of electrically conductive geotechnological, can carry out leakage detection more accurately, and flexible monitoring electrode is made by non-metallic conductive material, can prevent acid-base and electrochemical corrosion, make this structure can use for a long time.
This embodiment provides a barrier structure, which is a single-layer barrier system, and is shown with reference to fig. 1, and comprises: the impermeable layer 4 is laid on the field bottom and/or the side slope and comprises bentonite pads or clay; an equipotential layer 3 laid on the impervious layer 4; a plurality of flexible monitoring electrodes 2 are arranged on the equipotential layer 3, and a connection point 5 is formed at the connection position; and the impermeable membrane 1 is laid on the equipotential layer 3 after the flexible monitoring electrode 2 is connected.
In this example, a bentonite pad may be used with a gauge of about 4800g/m2, with the compacted clay having a thickness of no less than 300 mm.
In some embodiments, referring to fig. 2, the equipotential layer 3 includes an electrically conductive geotextile 31, the electrically conductive geotextile 31 includes electrically conductive fiber threads 311 and a non-woven geotextile 312, wherein the electrically conductive fiber threads 311 are cross-stitched to the non-woven geotextile 312, and the electrically conductive fiber threads 311 are uniformly arranged.
In certain embodiments, referring to fig. 3, the equipotential layer 3 includes an electrically conductive geosynthetic drainage network 32. The electrically conductive geocomposite geodrainage network 32 includes: an electrically conductive geotextile 323 (see fig. 2) comprising electrically conductive fiber threads 321 and a nonwoven geotextile 322, a geotextile drainage mesh 324, and a nonwoven geotextile 325, wherein the electrically conductive fiber threads 321 are cross-stitched to the nonwoven geotextile 322; the conductive geotextile 323 is thermally bonded to one side of the geotextile 324, and the non-woven geotextile 325 is thermally bonded to the other side of the geotextile 324, wherein the non-woven geotextile 325 is a conductive geotextile or a non-conductive geotextile.
This embodiment provides another barrier structure, which is a two-layer barrier system, as shown with reference to fig. 4, and which comprises: the impermeable membrane 11 is laid on the foundation layer 8 of the field bottom and/or the side slope; the equipotential layer 7 is laid on the impermeable membrane 11; a plurality of flexible monitoring electrodes 2 are arranged on the equipotential layer 7; the anti-seepage film 12 is laid on the equipotential layer 7; a non-woven geotextile layer 9 laid on the impermeable membrane 12; and a gravel guide and discharge layer 6 which is laid on the non-woven geotextile layer 9.
In some embodiments, the equipotential layer 7 is shown with reference to fig. 2 or fig. 3, and will not be described herein again.
In the embodiment of the application, the gravel guide and discharge layer 6 can adopt graded pebbles with the grain diameter of about 15mm to 30mm, and the thickness is not less than 300 mm. The non-woven geotextile can adopt the specification of about 600g/m 2. The base layer 8 generally requires a field bottom compacted density of greater than 0.93 and a slope compacted density of greater than 0.90.
In the examples of the present application, the barrier film 1, the barrier film 11 and the barrier film 12 are HDPE films, the thickness of which is not less than 2.0mm in a specific implementation.
In the embodiment of the present application, the conductive fiber lines 321 and 311 are carbon conductive fibers or graphite fibers, the carbon conductive fibers are made of a high molecular polymer with conductive carbon added thereto, and the graphite fibers are made of a high molecular polymer with conductive graphite added thereto. Carbon conductive fibers or graphite fibers are known materials and will not be described in detail herein.
This structure that this application embodiment provided sets up the equipotential layer that contains electrically conductive geotechnological cloth and the flexible monitoring electrode of the electrically conductive fiber line electrically connected with electrically conductive geotechnological cloth in anti-seepage structure, perhaps contains electrically conductive geotechnological composite geotechnological drainage network and the equipotential layer of the electrically conductive fiber line electrically connected's of electrically conductive geotechnological composite geotechnological drainage network flexible monitoring electrode, can carry out the leakage detection more accurately, and flexible monitoring electrode is made by non-metallic conductive material, can prevent acid-base and electrochemical corrosion, make this structure can use for a long time.
The following describes a laying method according to an embodiment of the present application.
Referring to the seepage-proofing structure shown in fig. 1, the bottom and the side slope of the refuse landfill are flattened and compacted to reach the standard of the construction of the seepage-proofing material, and then a bentonite pad or clay is laid as a seepage-proofing layer 4. An equal potential layer 3 is formed by laying conductive geotextile above a bentonite pad or clay (namely an impermeable layer 4), and flexible monitoring electrodes 2 are arranged and uniformly distributed on the conductive geotextile and form connecting points 5 of the electrodes and the geotextile conductive fiber lines with the conductive geotextile conductive fiber lines. The data abnormal points can be analyzed by combining a leakage monitoring system, the specific position of the leakage point of the impermeable membrane is determined, the leakage condition is rapidly confirmed, and the large-scale pollutant leakage accident is prevented.
Referring to the anti-seepage structure shown in fig. 4, the base layer 8 on the bottom and the side slope of the refuse landfill site is flattened and compacted to reach the standard of anti-seepage material construction, and then an anti-seepage film 11 is laid. An electric conduction geotechnical composite geotechnical drainage net is laid above the impermeable membrane 11 to form an equipotential layer 7, and the flexible monitoring electrodes 2 are uniformly distributed on the electric conduction geotechnical composite geotechnical drainage net and form connection points 5 of the electrodes and the electric conduction fiber lines with the electric conduction geotechnical composite geotechnical drainage net. An impermeable membrane 12 is laid over the flexible monitoring electrode 2. A non-woven geotextile 9 is laid over the impermeable membrane 12. The gravel packing layer 6 is completed over the non-woven geotextile 9.
In the embodiment of the present application, referring to fig. 1, 4 and 5, a plurality of flexible monitoring electrodes 2 are distributed on the equipotential layer 7 or 3, and optionally, one flexible monitoring electrode 2 is disposed in a rectangular area with a length of 1.5 m and a width of 1 m. The flexible monitoring electrodes 2 are led out to an external interface through insulated wires and can be electrically connected with the flexible monitoring electrodes 2 through the external interface. During detection, the plurality of flexible monitoring electrodes 2 feed back and transmit potential data to the leakage monitoring system, and the leakage monitoring system determines leakage points based on the potential data. For detection and missing point analysis, reference is made to the prior art, and details thereof are not repeated in the embodiments of the present application.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description, and do not represent the advantages and disadvantages of the embodiments of the present invention.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. An impermeable structure for a leak monitoring system, comprising:
the impermeable layer is laid on the field bottom and/or the side slope and comprises bentonite pads or clay;
the equipotential layer is laid on the impermeable layer and comprises conductive geotextile;
the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotextile, and are made of non-metal conductive materials and used for feeding back and transmitting potential data to a leakage monitoring system; and
and the anti-seepage film is laid on the equipotential layer after the plurality of flexible monitoring electrodes are connected.
2. The seepage prevention structure for the seepage monitoring system as claimed in claim 1, wherein the electrically conductive geotextile comprises the electrically conductive fiber threads and a non-woven geotextile, wherein the electrically conductive fiber threads are cross-stitched on the non-woven geotextile, and the electrically conductive fiber threads are uniformly arranged.
3. The seepage prevention structure for a seepage monitoring system as claimed in claim 1 or 2, wherein the conductive fiber thread is a carbon conductive fiber or a graphite fiber.
4. An impermeable structure for a leak monitoring system, comprising:
the impermeable layer is laid on the field bottom and/or the side slope and comprises bentonite pads or clay;
the equipotential layer is laid on the impervious layer and comprises a conductive geotechnical composite geotechnical drainage network;
the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotechnical composite geotechnical drainage network, are made of non-metal conductive materials and are used for feeding back and transmitting potential data to a leakage monitoring system; and
and the anti-seepage film is laid on the equipotential layer after the plurality of flexible monitoring electrodes are connected.
5. The impermeable structure for leak monitoring systems as defined in claim 4, wherein the electrically conductive geocomposite geodisplacement mesh comprises: an electrically conductive geotextile comprising the electrically conductive fiber threads and a first nonwoven geotextile, a geotextile drainage network, and a second nonwoven geotextile, wherein the electrically conductive fiber threads are cross-stitched to the first nonwoven geotextile; the conductive geotextile is thermally bonded on one surface of the geotechnical drainage network, and the second non-woven geotextile is thermally bonded on the other surface of the geotechnical drainage network, wherein the second non-woven geotextile is the conductive geotextile or the non-conductive geotextile.
6. An impermeable structure for a leak monitoring system, comprising:
the first impermeable membrane is laid on the foundation layer of the field bottom and/or the side slope;
the equipotential layer is laid on the first impermeable membrane and comprises conductive geotextile;
the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotextile, and are made of non-metal conductive materials and used for feeding back and transmitting potential data to a leakage monitoring system;
the second impermeable membrane is laid on the equipotential layer connected with the plurality of flexible monitoring electrodes;
the non-woven geotextile layer is laid on the second impermeable membrane; and
and the gravel guide and discharge layer is laid on the non-woven geotextile layer.
7. The seepage prevention structure for the seepage monitoring system as claimed in claim 6, wherein the electrically conductive geotextile comprises the electrically conductive fiber threads and a non-woven geotextile, wherein the electrically conductive fiber threads are cross-stitched on the non-woven geotextile, and the electrically conductive fiber threads are uniformly arranged.
8. The seepage prevention structure for a seepage monitoring system as claimed in claim 6 or 7, wherein the conductive fiber thread is a carbon conductive fiber or a graphite fiber.
9. An impermeable structure for a leak monitoring system, comprising:
the first impermeable membrane is laid on the foundation layer of the field bottom and/or the side slope;
the equipotential layer is laid on the first impermeable membrane and comprises a conductive geotechnical composite geotechnical drainage network;
the flexible monitoring electrodes are electrically connected with the conductive fiber wires of the conductive geotechnical composite geotechnical drainage network, are made of non-metal conductive materials and are used for feeding back and transmitting potential data to a leakage monitoring system;
the second impermeable membrane is laid on the equipotential layer connected with the plurality of flexible monitoring electrodes;
the non-woven geotextile layer is laid on the second impermeable membrane; and
and the gravel guide and discharge layer is laid on the non-woven geotextile layer.
10. The impermeable structure for leak monitoring systems as defined in claim 9, wherein the electrically conductive geocomposite geodisplacement mesh comprises: an electrically conductive geotextile comprising the electrically conductive fiber threads and a first nonwoven geotextile, a geotextile drainage network, and a second nonwoven geotextile, wherein the electrically conductive fiber threads are cross-stitched to the first nonwoven geotextile; the conductive geotextile is thermally bonded on one surface of the geotechnical drainage network, and the second non-woven geotextile is thermally bonded on the other surface of the geotechnical drainage network, wherein the second non-woven geotextile is the conductive geotextile or the non-conductive geotextile.
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| CN115404840A (en) * | 2022-08-24 | 2022-11-29 | 中南大学 | Damage perception and catastrophe early warning intelligent geotextile based on deep learning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115404840A (en) * | 2022-08-24 | 2022-11-29 | 中南大学 | Damage perception and catastrophe early warning intelligent geotextile based on deep learning |
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