CN212540740U - Geomembrane damage detection system - Google Patents

Abstract

The utility model discloses a damaged detecting system of geomembrane, a serial communication port, including briquetting, water jet equipment, circuit break-make tester, power, telluric electricity field, cross a line section of thick bamboo, terminal, first cable, second cable, third cable, the dirt bed has been laid to the below of geomembrane, the geomembrane top is located to the briquetting, the water jet equipment right-hand member is equipped with outlet pipe, handle, the outlet pipe is drawn forth the vertical downward buckling in back from water jet equipment inside, and the briquetting is located the right-hand of the vertical downward buckling section of outlet pipe. The utility model provides a detection rate of accuracy that prior art exists high inadequately, the not enough problem of reliability.

Description

Geomembrane damage detection system

Technical Field

The utility model relates to an environmental engineering technical field specifically is a damaged detecting system of geomembrane.

Background

The leakage of the refuse landfill has great harm to the environment, after the soil is polluted by the leakage, the soil can be salinized and poisoned, pathogens such as parasites, pathogenic bacteria and the like in the soil can cause diseases, the leakage can also pollute the underground water, and toxic and harmful substances finally enter food chains of human beings to cause serious injury to the human bodies. The technology of adopting the geomembrane to perform anti-leakage treatment on the refuse landfill is more and more widely applied in China, and data shows that the defects of the geomembrane of up to 97 percent are caused in the construction process, and the geomembrane is greatly damaged by carelessness of operators or construction according to scientific procedures, so that leakage is caused. Therefore, detection of damage to the geomembrane is particularly important. After the construction of the drainage layer/protective soil layer on the geomembrane is finished, the electrical leakage damage detection is adopted, so that the method is an effective means for ensuring the quality of the leakage-proof engineering.

The water gun method is used as an electrical leakage damage detection means and is gradually applied to the field of geomembrane leakage damage detection, and a geomembrane leakage damage detection system based on the water gun method can be used for carrying out leakage detection on a geomembrane without a covering (such as geotextile and the like). This technique is particularly suitable for use during geomembrane installation or after cleaning. If there is a leak in the geomembrane, the flowing water contacts the conductive material below the geomembrane through the leak, thus forming a closed circuit with other components, and a detection device is used to monitor the current or voltage change to determine if there is a leak.

The existing geomembrane damage detection system based on the water gun method has certain defects: 1. when the detection system moves and operates, the part contacting with the geomembrane often pushes or rolls up the geomembrane to form a bulge or a bulge, so that the geomembrane is separated from the conducting layer below the geomembrane, if the bulge or the bulge is damaged, a closed electric loop cannot be formed due to the separation of the geomembrane and the conducting layer below the geomembrane, so that the system is judged to be not damaged by mistake, and the problem of low detection accuracy is caused; 2. the position relation between the water pipe and the test electrode of the detection system is set randomly, when the geomembrane is damaged and leaked, the conditions of overlarge water passing area range and poor contact between the detection electrode and water or a conducting layer occur due to poor position relation between the test electrode and the leak and the water pipe, so that the problem of low detection accuracy is caused, and the reliability of the system is influenced.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of prior art, the utility model provides a damaged detecting system of geomembrane solves the not enough high, the not enough problem of reliability of detection rate of accuracy that prior art exists.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the terms are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; 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 utility model provides a technical scheme that above-mentioned problem adopted is:

a geomembrane damage detection system is characterized by comprising a pressing block, a water spraying device, a circuit on-off tester, a power supply, a grounding electrode, a wire passing cylinder, a binding post, a first cable, a second cable and a third cable, wherein a soil layer is laid below the geomembrane, the pressing block is arranged above the geomembrane, the right end of the water spraying device is provided with a water outlet pipe and a handle, the water outlet pipe is led out from the inside of the water spraying device and then vertically bent downwards, the pressing block is positioned at the right side of the vertical downward bending section of the water outlet pipe, a guide plate comprises a first plate body, a plate bending section and a second plate body, the first plate body and the second plate body are connected through the plate bending section, the first plate body, the plate bending section and the second plate body jointly form a hook-shaped plate structure, the top of the first plate body is fixedly connected with the bottom of the pressing block, the bottom of the plate bending section is in contact with the upper surface of, the second plate body points to the vertical downward bending section of the water outlet pipe in an obliquely upward manner, the top of the compression roller is fixedly connected with the bottom of the pressing block, the outer wall of the left side of the pressing block is provided with a fixing block, the fixing block comprises a vertically through pipeline hole, and the vertical downward bending section of the water outlet pipe penetrates through the pipeline hole;

the water jet equipment upper surface is located to circuit break-make tester, telluric electricity field inserts in the earth layer, the outlet pipe vertical downward bending section left side is located to the terminal, surface contact on terminal bottom and the geomembrane, circuit break-make tester, power pass through first cable electricity and link to each other, power, telluric electricity field pass through second cable electricity and link to each other, circuit break-make tester passes through the third cable electricity with the terminal and links to each other, cross bobbin and fixed block left end fixed connection, cross the bobbin and include the vertical cable hole that link up to, the third cable is worn to establish and is crossed from the cable hole.

Among this technical scheme, because the briquetting, the guide board, the action of gravity of compression roller, in the motion process, can guarantee the in close contact with of dirt bed and geomembrane, the structure of compression roller, the structure of board bending segment fillet has guaranteed the soft level and smooth cisoid of contact with the geomembrane in the motion process, the inhomogeneous situation of the geomembrane atress is suddenly high or suddenly low has effectively been avoided, thereby guarantee further increase the in close contact with of dirt bed and geomembrane, just so can effectively avoid because the not good detection erroneous judgement that brings of contact of dirt bed and geomembrane, obviously improve the detection rate of accuracy. Moreover, first plate body, second plate body can effectively block rivers too big or splash right-hand, and the structure that second plate body and geomembrane upper surface are constituteed can also play backward flow effect left to rivers, and this has delayed the speed of rivers diffusion, has increased rivers flow time, helps more fully with geomembrane surface contact to make the misjudgment rate further reduce, survey the rate of accuracy and further improve. In addition, the connection relation and the structure of the fixing block, the wire passing cylinder and the pressing block ensure the fixity of the relative positions of the vertical downward bending section of the water outlet pipe and the binding post, and meanwhile, the swinging is not easy to occur, so that the probability of the conditions that the water passing area is too large and the contact between the detection electrode and water or a conducting layer is poor when the geomembrane is damaged is greatly reduced, the detection accuracy is further increased, and the system reliability is obviously improved.

Preferably, the distance between the pipe orifice at the tail end of the water outlet pipe and the upper surface of the geomembrane is 2-5 cm. The terminal mouth of pipe of outlet pipe is apart from the height of geomembrane upper surface can not too big, and too high then splashes seriously, also can not be too little, and too little then causes rivers too little easily, can not effectively enter into the dirt bed through the leakage point, all easily causes the erroneous judgement, and 2 ~ 5cm highly is favorable to further improving the detection accuracy of system.

Preferably, the horizontal distance between the vertical downward bending section of the water outlet pipe and the wiring terminal is less than 3 cm. The position of the binding post can be effectively guaranteed by the distance, and the third cable is prevented from swinging. The system stability is enhanced, and the detection accuracy is ensured.

Preferably, the horizontal distance between the vertical downward bent section of the water outlet pipe and the bent section of the plate is more than 5 cm. Such distance more is favorable to the second plate body to block rivers too big or splash to right-hand, makes the structure that second plate body and geomembrane upper surface are constituteed more easily play the effect of backward flow left to rivers, has delayed the speed of rivers diffusion more, has increased rivers flow time, more helps more fully with geomembrane surface contact to make the misjudgment rate further reduce, the detection accuracy further improves.

Preferably, the grounding electrode is a lightning protection copper binding post. The copper wiring terminal lead has good performance, is easy to purchase, low in price and high in cost performance, and lightning protection enables the detection system to work in lightning weather and environment, so that the stability and the applicable scene are increased.

Preferably, the circuit on-off tester is provided with an audible and visual alarm module. Therefore, the method is more intuitive, and is convenient for workers to find out the damage in time so as to further process, and the method is high in response speed, convenient and efficient.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model effectively avoids the detection misjudgment caused by poor contact between the soil layer and the geomembrane, and obviously improves the detection accuracy rate;

(2) the utility model greatly reduces the probability of the condition of overlarge water passing area and poor contact between the detection electrode and water or a conducting layer, thereby further increasing the detection accuracy and obviously improving the system reliability;

(3) the utility model has high cost performance and high stability;

(4) the utility model discloses it is more directly perceived, response speed is fast, convenient high-efficient.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view taken along the plane a-a of fig. 1.

Reference numbers and corresponding part names in the drawings: 1. a clay layer, 2, a geomembrane, 3, a water spraying device, 31, a water outlet pipe, 32, a handle, 4, a pressing block, 41, a guide plate, 411, a first plate body, 412, a plate bending section, 413, a second plate body, 42, a pressing roller, 43, a fixing block, 431, a pipeline hole, 5, a circuit on-off tester, 51, a power supply, 52, a grounding electrode, 53, a wire passing cylinder, 531, a cable hole, 54, a binding post, 55, a first cable, 56, a second cable, 57 and a third cable.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Example 1

As shown in fig. 1 and 2, a geomembrane damage detection system comprises a pressing block 4, a water spraying device 3, a circuit on-off tester 5, a power supply 51, a grounding electrode 52, a wire passing cylinder 53, a binding post 54, a first cable 55, a second cable 56 and a third cable 57, wherein a soil layer 1 is laid below the geomembrane 2, the pressing block 4 is arranged above the geomembrane 2, a water outlet pipe 31 and a handle 32 are arranged at the right end of the water spraying device 3, the water outlet pipe 31 is vertically bent downwards after being led out from the inside of the water spraying device 3, the pressing block 4 is positioned at the right side of the vertically downward bent section of the water outlet pipe 31, a guide plate 41 and a compression roller 42 are arranged between the geomembrane 2 and the pressing block 4, the guide plate 41 is positioned at the right side of the vertically downward bent section of the water outlet pipe 31, the guide plate 41 comprises a first plate body 411, a plate bent section 412 and a second plate body 413, the water outlet pipe 31 is characterized in that the first plate body 411, the plate bending section 412 and the second plate body 413 jointly form a hook-shaped plate structure, the top of the first plate body 411 is fixedly connected with the bottom of the pressing block 4, the bottom of the plate bending section 412 is in contact with the upper surface of the geomembrane 2, the plate bending section 412 is rounded, the bottom end of the plate bending section 412 is in contact with the upper surface of the geomembrane 2, the second plate body 413 obliquely upwards points to the water outlet pipe 31 and vertically downwards bends, the top of the pressing roller 42 is fixedly connected with the bottom of the pressing block 4, the outer wall of the left side of the pressing block 4 is provided with a fixing block 43, the fixing block 43 comprises a vertically through pipeline hole 431;

the circuit on-off tester 5 is arranged on the upper surface of the water spraying device 3, the grounding electrode 52 is inserted into the soil layer 1, the binding post 54 is arranged on the left side of the vertical downward bending section of the water outlet pipe 31, the bottom of the binding post 54 is in surface contact with the upper surface of the geomembrane 2, the circuit on-off tester 5 and the power supply 51 are electrically connected through a first cable 55, the power supply 51 and the grounding electrode 52 are electrically connected through a second cable 56, the circuit on-off tester 5 is electrically connected with the binding post 54 through a third cable 57, the wire passing cylinder 53 is fixedly connected with the left end of the fixed block 43, the wire passing cylinder 53 comprises a vertical through cable hole 531, and the third cable 57 penetrates through the cable hole 531 to.

During operation, people and power machinery apply force from handle 32, and the push system moves right, and water jet equipment 3 can select current devices such as spray gun or integrated spray tank, can adopt ordinary running water or add the water that has certain increase electric conductive property material in the water jet equipment 3, and rivers are followed the vertical downward bending section blowout of outlet pipe 31 and are reached geomembrane 2 upper surface. Meanwhile, the power supply 51 is started, if the geomembrane 2 is provided with a damaged leak (leakage point), water flow enters the soil layer 1 through the leakage point, the circuit on-off tester 5, the first cable 55, the power supply 51, the second cable 56, the grounding electrode 52, the soil layer 1, the leakage point, the wiring terminal 54 and the third cable 57 form a closed conducting circuit, the circuit on-off tester 5 displays circuit connection, and the existence of the leakage point can be judged. During the use, according to the reality, can increase the satellite positioning module, also can increase the device of automatic locking to realize surveying the intellectuality of leakage point and raise the efficiency, but these are current mature techniques, also not the utility model discloses an innovation point place, the event is not reacted and is in the utility model discloses in, also do not describe its theory of operation again.

Because the briquetting 4, the guide board 41, the action of gravity of compression roller 42, in the motion process, can guarantee the in close contact with of dirt bed 1 and geomembrane 2, the structure of compression roller 42, the structure of board bending segment 412 radius angle has guaranteed the soft level and smooth and straight of contact with geomembrane 2 in the motion process, effectively avoided the condition that geomembrane 2 atress is suddenly high suddenly low inhomogeneous, thereby guarantee further to increase the in close contact with of dirt bed 1 and geomembrane 2, just so can effectively avoid because the not good detection erroneous judgement that brings of contact of dirt bed 1 and geomembrane 2, obviously improved the detection rate of accuracy. Moreover, first plate body 411, second plate body 413 can effectively block that rivers are too big or splash to right-hand, and the structure that second plate body 413 and geomembrane 2 upper surface are constituteed can also play backward flow effect left to rivers, and this speed that has delayed the rivers diffusion has increased rivers flow time, helps more fully with geomembrane 2 surface contact to make the misjudgment rate further reduce, survey the rate of accuracy and further improve. In addition, the connection relation and the structure of the fixing block 43, the wire passing cylinder 53 and the pressing block 4 ensure the fixing of the relative positions of the vertical downward bending section of the water outlet pipe 31 and the binding post 54, and meanwhile, the swinging is not easy to occur, so that the probability of poor contact or over-large range finding and short circuit is greatly reduced, the detection accuracy is further increased, and the system reliability is obviously improved.

Preferably, the distance between the pipe orifice at the tail end of the water outlet pipe 31 and the upper surface of the geomembrane 2 is 2-5 cm. The terminal mouth of pipe of outlet pipe 31 is apart from geomembrane 2 upper surface highly can not too big, and too high then splashes seriously, also can not be too little, and too little then causes rivers too little easily, can not effectively enter into soil layer 1 through the leakage point, all easily causes the erroneous judgement, and 2 ~ 5 cm's height is favorable to further improving the detection rate of accuracy of system.

Preferably, the horizontal distance between the vertically downward bent section of the water outlet pipe 31 and the binding post 54 is less than 3 cm. Such a distance is effective to secure the position of the terminal 54 and prevent the swing of the third cable 57. The system stability is enhanced, and the detection accuracy is ensured.

Preferably, the horizontal distance between the vertical downward bending section of the water outlet pipe 31 and the plate bending section 412 is more than 5 cm. Such distance is more favorable to the second plate body 413 to block that rivers are too big or splash to right-hand, makes the structure that second plate body 413 and geomembrane 2 upper surface are constituteed play the effect of backward flow left to rivers more easily, has delayed the speed of rivers diffusion more, has increased rivers flow time, more helps more fully with geomembrane 2 surface contact to make the misjudgment rate further reduce, survey the rate of accuracy and further improve.

Example 2

As shown in fig. 1 and fig. 2, in order to better demonstrate the present invention, as a further optimization of embodiment 1, the present embodiment includes all the technical features of embodiment 1, and the difference is that the present embodiment further includes the following technical features:

preferably, the ground electrode 52 is a lightning-proof copper post. The copper wiring terminal lead has good performance, is easy to purchase, low in price and high in cost performance, and lightning protection enables the detection system to work in lightning weather and environment, so that the stability and the applicable scene are increased.

Preferably, the circuit on-off tester 5 is provided with an audible and visual alarm module. Therefore, the method is more intuitive, and is convenient for workers to find out the damage in time so as to further process, and the method is high in response speed, convenient and efficient.

As described above, the present invention can be preferably realized.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical essence of the present invention is that within the spirit and principle of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.

Claims (6)

1. The geomembrane damage detection system is characterized by comprising a pressing block (4), a water spraying device (3), a circuit on-off tester (5), a power supply (51), a grounding electrode (52), a wire passing cylinder (53), a binding post (54), a first cable (55), a second cable (56) and a third cable (57), a clay layer (1) is laid below the geomembrane (2), the pressing block (4) is arranged above the geomembrane (2), a water outlet pipe (31) and a handle (32) are arranged at the right end of the water spraying device (3), the water outlet pipe (31) is vertically bent downwards after being led out from the inside of the water spraying device (3), the pressing block (4) is positioned at the right side of the vertical downward bending section of the water outlet pipe (31), a guide plate (41) and a pressing roller (42) are arranged between the geomembrane (2) and the pressing block (4), the guide plate (41) is positioned at the right side of the vertical downward bending, the guide plate (41) comprises a first plate body (411), a plate bending section (412) and a second plate body (413), the first plate body (411) and the second plate body (413) are connected through the plate bending section (412), the first plate body (411), the plate bending section (412) and the second plate body (413) jointly form a hook-shaped plate structure, the top of the first plate body (411) is fixedly connected with the bottom of the pressing block (4), the bottom of the plate bending section (412) is in surface contact with the upper surface of the geomembrane (2), the plate bending section (412) is chamfered, the bottom of the plate bending section (412) is in surface contact with the upper surface of the geomembrane (2), the second plate body (413) points to the vertical downward bending section of the water outlet pipe (31) in an inclined upward direction, the top of the pressing roller (42) is fixedly connected with the bottom of the pressing block (4), the outer wall of the left side of the pressing block (4) is provided with a fixing, the water outlet pipe (31) vertically bends downwards and passes through the pipeline hole (431);

the circuit on-off tester (5) is arranged on the upper surface of the water spraying device (3), the grounding electrode (52) is inserted into a soil layer (1), the binding post (54) is arranged on the left side of the vertical downward bending section of the water outlet pipe (31), the bottom of the binding post (54) is in surface contact with the upper surface of the geomembrane (2), the circuit on-off tester (5) and the power supply (51) are electrically connected through a first cable (55), the power supply (51) and the grounding electrode (52) are electrically connected through a second cable (56), the circuit on-off tester (5) is electrically connected with the binding post (54) through a third cable (57), the wire passing cylinder (53) is fixedly connected with the left end of the fixed block (43), the wire passing cylinder (53) comprises a vertical through cable hole (531), and the third cable (57) penetrates through the cable hole (531).

2. The geomembrane damage detection system according to claim 1, wherein a height of a terminal nozzle of the water outlet pipe (31) from an upper surface of the geomembrane (2) is 2 to 5 cm.

3. A geomembrane damage detection system according to claim 1, wherein said outlet pipe (31) is horizontally spaced from the terminal post (54) by less than 3cm at a vertically downward bent section.

4. A geomembrane damage detection system according to claim 1, wherein said outlet pipe (31) is horizontally spaced from the plate bending section (412) by more than 5cm at a vertically downward bending section.

5. A geomembrane damage detection system according to claim 1, wherein said ground electrode (52) is a lightning protected copper stud.

6. Geomembrane damage detection system according to claim 1, wherein said on-off circuit tester (5) is provided with an audible and visual alarm module.

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