CN204064593U - Seepage of seepage-proof layer detection system - Google Patents
Seepage of seepage-proof layer detection system Download PDFInfo
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- CN204064593U CN204064593U CN201420354107.1U CN201420354107U CN204064593U CN 204064593 U CN204064593 U CN 204064593U CN 201420354107 U CN201420354107 U CN 201420354107U CN 204064593 U CN204064593 U CN 204064593U
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Abstract
The utility model provides a kind of seepage of seepage-proof layer detection system.This system comprises conductive grid, be laid on the below of impervious barrier, described conductive grid comprises by the first wire group of first direction arrangement and the second wire group by second direction arrangement, arbitrary wire in described first wire group all has a point of crossing with the arbitrary wire square crossing in the second wire group, each wires cross place forms each net point in described conductive grid, and two wire insulations at each net point place are arranged; Monitor and detection device, for each loop providing source signal respectively to the arbitrary wire composition in the arbitrary wire in described first wire group and the second wire group, and gathers the effective electric signal in each loop respectively.Whether the detection system that the utility model provides, effectively can produce seepage to impervious barrier and detect, and location leak location, leakage monitoring pollution range.
Description
Technical field
The utility model relates to impervious barrier technology, particularly relates to a kind of seepage of seepage-proof layer detection system.
Background technology
Along with the quick growth of economy, China's solid waste generation is increasing trend, within 2010, the house refuse amount of clearing is more than 1.5 hundred million tons, industrial dangerous waste generation is 1,429 ten thousand tons, hazardous waste storage capacity over the years has reached hundred million tons, and a large amount of potentially danger of solid waste to environment produced is very important.Landfill stabilization is the final disposal mode of solid waste.When carrying out landfill disposal to refuse, for preventing causing secondary pollution to underground water, soil etc., need to lay artificial impervious liner at landfill yard, to isolate inside and outside landfill yard, prevent the pollutant percolate in landfill yard from entering soil and underground water, the synthetic material of artificial impervious liner mainly adopts high density polyethylene (HDPE).In landfill yard construction, and in operation process, very easily because of construction quality or run improper, impervious barrier is caused to occur seepage.The hundreds of family in the whole nation will be newly-built solid waste landfill disposal facility, urgently adopt seepage of seepage-proof layer on-line monitoring and detection technique to carry out supervising to its safe operation situation.Current existing seepage of seepage-proof layer detection technique, due to cost reason, cannot accomplish to apply widely.
On the other hand, large scale industry evaporation pond, storage slag field and industrial liquid storage tank, from its environmental sensitivity and performance of enterprises angle, also impervious barrier HDPE film leak detection problem urgently to be resolved hurrily.As Fujian Zijin Mining and the mining industry of Guangxi Gold river because seepage causes river pollution.Along with the generation of various industrial environment hazardous events, the online monitoring of leakage strengthening its seepage control system is also extremely urgent with detection.
Utility model content
The purpose of this utility model is just to provide a kind of seepage of seepage-proof layer detection system, whether occurs seepage, and can judge the position of seepage, monitoring pollution scope effectively to detect impervious barrier.
The utility model provides a kind of seepage of seepage-proof layer detection system, comprising:
Conductive grid, be laid on the below of impervious barrier, described conductive grid comprises by the first wire group of first direction arrangement and the second wire group by second direction arrangement, arbitrary wire in described first wire group all has a point of crossing with the arbitrary wire square crossing in the second wire group, each wires cross place forms each net point in described conductive grid, and two wire insulations at each net point place are arranged;
Monitor and detection device, for each loop providing source signal respectively to the arbitrary wire composition in the arbitrary wire in described first wire group and the second wire group, and the effective electric signal gathered respectively in each loop, and based on the electric signal in each loop of different time collection, determine whether the impervious barrier of the infall of two wires in each loop occurs seepage.
In above-mentioned system, the distance between each net point is identical, or in the scope of the value preset.
In above-mentioned system, described monitor and detection device comprises signal generating circuit, data acquisition circuit and data processing circuit, wherein:
Described signal generating circuit, for each loop providing source signal respectively to the arbitrary wire composition in the arbitrary wire in described first wire group and the second wire group;
Described data acquisition circuit, for when described signal generating circuit is to primary Ioops providing source signal in described each loop, gathers the effective electric signal in described primary Ioops;
Described data processing circuit, judge whether two wires cross places in described primary Ioops occur seepage for the effective electric signal in the described primary Ioops that collects based on described data acquisition circuit, simultaneously, based on the electric signal in each loop that described data acquisition circuit collects, determine that each grid point locations that seepage is corresponding appears in impervious barrier.
In above-mentioned system, each loop that the arbitrary wire in described first wire group and the arbitrary wire in the second wire group form is respectively arranged with gate-controlled switch, is connected to the two ends of signal source by common wire's section;
Described signal generating circuit comprises described signal source, and the on-off controller be connected with the gate-controlled switch on each loop, and described signal source is connected in common wire's section;
Described on-off controller passes through the opening and closing controlling each gate-controlled switch, by described signal source respectively to each loop providing source signal.
In above-mentioned system, each gate-controlled switch is relay switch, and described on-off controller controls the break-make of corresponding circuit by pilot relay.
In above-mentioned system, described data acquisition circuit comprises: signal acquisition circuit and analog to digital conversion circuit, wherein:
Described signal acquisition circuit, for gathering the effective electric signal of each loop when providing source signal;
Analog-digital conversion circuit as described, the simulating signal for the electric signal gathered by described signal acquisition circuit converts the digital signal to correspondence to;
Described data processing circuit, for obtaining the value of electrical signals that analog-digital conversion circuit as described collects, determines whether the impervious barrier at the net point place on corresponding loop occurs seepage.
In above-mentioned system, also can comprise:
Data communication module, is connected with described data acquisition circuit, for the electric signal gathered by described data acquisition circuit, by communication link to described data processing circuit.
In above-mentioned system, described data processing circuit, is specially central controller.
In above-mentioned system, described central controller, also for controlling described signal generating circuit, respectively to each loop providing source signal of the arbitrary wire composition in the arbitrary wire in described first wire group and the second wire group.
The seepage of seepage-proof layer detection system that the utility model embodiment provides, detect by the loop with the composition of wire between two of a point of crossing in the conductive grid to the rectangle be arranged on below impervious barrier, the electric signal that can detect based on each loop of different time, determine whether the point of crossing place of the wire in each loop produces Seepage, thus can determine whether impervious barrier seepage occurs, and there is the position of seepage.The system that the utility model provides can detect the seepage of impervious barrier in real time, and it has easy to detect, is convenient to the feature realized.
Accompanying drawing explanation
The theory structure schematic diagram of the seepage of seepage-proof layer detection system that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the structural representation of conductive grid in the utility model embodiment;
Fig. 3 is the structural representation of monitor and detection device in the utility model embodiment;
Fig. 4 is a structural representation of the utility model embodiment embody rule;
Fig. 5 is another structural representation of the utility model embodiment embody rule.
Embodiment
For the situation of impervious barrier generation seepage, the technical scheme that the utility model embodiment provides, by laying one deck conductive grid below impervious barrier, by the electric signal of each loop when different time conducts electricity respectively formed based on two wires forming each net point in conductive grid, determine whether the impervious barrier at corresponding each net point place seepage occurs, and produce the position of seepage.Be described in detail with the realization of instantiation to technical solutions of the utility model below.
As shown in Figure 1, the theory structure schematic diagram of the seepage of seepage-proof layer detection system provided for the utility model embodiment.As shown in Figure 1, this seepage of seepage-proof layer detection system comprises conductive grid 10, and monitor and detection device 20, wherein conductive grid 10 is laid on the below of impervious barrier to be detected, monitor and detection device 20 is by being energized respectively to the loop of the two wire compositions forming each net point in conductive grid 10, and detect effective electric signal in loop when different time is energized, determine whether the impervious barrier at respective grid points place produces seepage.Meanwhile, because the position of the relative impervious barrier of net point can pre-determine, therefore, accurately can determine that impervious barrier produces the particular location of seepage.
As shown in Figure 2, be the structural representation of conductive grid in the utility model embodiment.This conductive grid 10 is laid on the below of impervious barrier to be tested, as shown in Figure 2, this conductive grid 10 comprises the first wire group 101 by first direction and the second wire group 102 by second direction, first direction is vertical with second direction to be arranged, and has multiple wire respectively in the first wire group 101 and the second wire group 102; Arbitrary wire in first wire group 101 is all arranged with the arbitrary wire square crossing in the second wire group 102, and only there is a point of crossing, namely each wire in the first wire group 101 be arranged in parallel at first direction, each wire in second wire group 102 be arranged in parallel in the second direction vertical with first direction, intersection is there will not be between wire in first wire group 101, also intersection is there will not be between wire in second wire group, namely each wires cross place forms each net point in conductive grid 10, thus can form conductive grid 10; Meanwhile, two wire insulations at each net point place in conductive grid 10 are arranged, and as shown in Figure 2, two wires at net point Q place are arranged in insulation at infall.In the present embodiment, for ease of illustrating, during loop corresponding to net point described below, refer to the loop of the two wires compositions forming this net point.
In the present embodiment, by conductive grid is arranged to rectangular configuration, each grid point locations in conductive grid 10 easily can be determined, like this, when carrying out seepage of seepage-proof layer and detecting, more easily determine the leak location of impervious barrier; Meanwhile, be also convenient to the laying of conductive grid, improve laying effect.
In practical application, each wire in above-mentioned conductive grid can be specifically exposed conductive cords, it can be such as stainless steel wire rope, diameter can be selected to be the wire rope of 2mm, the desirable 5m of spacing between wire rope, wire rope infall carries out insulation by sprays insulating material and arranges, and the insulated lengths of spraying can be 50cm.Namely each wire is except being except mutually insulated at net point place, place outside grid point locations is all in naked state, like this, when seepage of seepage-proof layer, if have percolate through a certain grid point locations, two wire insulation character that then grid is pointed out will change, under the electric action of percolate, two wires are become nonisulated state by state of insulation, like this, the loop of two wire compositions will become low-resistance characteristic from high resistant characteristic, the loop of measuring like this will be different at the electric signal of high resistant characteristic and low-resistance characteristic two states, can determine whether net point place occurs seepage based on this change just.
In practical application, the distance in conductive grid 10 between each net point can be identical, or within the scope of the value preset, like this, can be convenient to the relative position determining each net point, and then be easy to the leak location determining impervious barrier.Particularly, formed the electric signal in the loop of two wire compositions of each net point by sequence detection, just can determine whether corresponding net point place seepage occurs.In practical application, according to seepage of seepage-proof layer accuracy of detection needs, the network of suitable distance net point can be set.
In practical application, for ease of the determination of the relative position to each net point in conductive grid 10, can in advance to sorting in order by the wire of preset rules arrangement in each wire group, and number, based on the numbering of each wire, corresponding net point can be determined, during test like this, also can measure based on numbering, improve and measure efficiency and measurement effect.Particularly, as shown in Figure 2, in the conductive grid 10 of rectangular node, to press the wire of first direction each wire arranged in parallel as X-direction in first wire group 101, number consecutively is X1, X2,, Xn, will press the wire of second direction each wire arranged in parallel as Y-direction in the second wire group 102, number consecutively Y1, Y2 ..., Ym, wherein, n and m be all be greater than 0 natural number; Each net point in conductive grid 10 just can utilize (Xi, Yj) represent, wherein, 1≤i≤n, 1≤j≤m, represents the point of crossing formed between the wire Yj of the jth row in the wire Xi of the i-th row in the first wire group 101 and the second wire group 102.Like this, utilizing monitor and detection device 20 to come for loop providing source signal corresponding to each net point in conductive grid 10, and when carrying out loop electrical signal detection, just can detect according to number order.In the present embodiment, according to the queueing discipline of conductive grid, each net point (Xi can be pre-determined, Yj) position below impervious barrier, or relative position relation, like this, when subsequent detection judges to loop electric signal, can promptly and accurately judge the position occurring seepage in impervious barrier.
In the present embodiment, monitor and detection device 20 can respectively to each loop providing source signal of the arbitrary wire composition in the arbitrary wire in the first wire group 101 and the second wire group 102, and the electric signal gathered respectively in each loop, and based on the electric signal in each loop gathered, determine whether the impervious barrier of the infall of two wires in each loop occurs seepage.Because two wires at the point of crossing place in each loop are arranged in insulation, if the impervious barrier generation Seepage of point of crossing place or adjacent, the electrical property (mainly the resistance in loop changes) in loop corresponding to respective grid points will be changed, therefore, just can determine whether respective grid points place Seepage occurs according to the electrical property of measure loop.
In practical application, provide the power supply of predeterminated voltage respectively by the loop corresponding for each net point, and by detecting the current signal of each loop when being energized, determine whether corresponding net point place Seepage occurs.Or, in practical application, also by the change of detectable voltage signals, determine whether net point place seepage occurs, specifically, can determine whether, at net point place, seepage occurs based on the electric current detected, the size of voltage under different conditions; Or, also based on size of current, determine that loop resistance change determines whether, at net point place, seepage occurs.With electric current in measure loop, and will determine that loop resistance variation pattern is to determine whether corresponding net point place produces seepage of seepage-proof layer phenomenon below.
Whether in the present embodiment, when needing the detection impervious barrier be laid on above conductive grid to occur to leak, the electric signal in the loop that two wires that just can detect each net point are successively formed, determine whether corresponding net point place seepage occurs.Be described with the testing process of the conductive grid of rectangular node shown in Fig. 2 below:
First, the position of each net point in conductive grid 10 can be pre-determined.
The position of net point, specifically can according to the position of the relative impervious barrier determined during route wires, namely in the position at impervious barrier place.Specifically can determine by each wire of X-direction and Y-direction arrangement according to above-mentioned, such as net point (Xi, Yj) corresponding position is just represented, this net point (Xi is formed according to detecting, the electric signal in the loop of two wire compositions Yj), when determining the position seepage of the impervious barrier that this net point (Xi, Yj) is corresponding, just correspondence can find the corresponding position of impervious barrier, to safeguard impervious barrier.By the actual position coordinate one_to_one corresponding of each net point and impervious barrier, like this, find a net point, just can determine impervious barrier correspondence position accurately.
Secondly, by monitor and detection device, provide signal source at different time respectively to the loop that each net point is corresponding, and detect the electric signal in each loop respectively when providing signal source.
Finally, according to the electric signal in each loop detected, determine whether impervious barrier position, net point place corresponding to each loop occurs seepage.
Particularly, by monitor and detection device 20, there is provided power supply to net point (X1 successively, Y1), (X2, Y2) ..., (Xi, Yj) ..., (Xn, Ym) corresponding loop, while providing signal source to loop corresponding to respective grid points, the electric signal on measuring circuit is current signal here, and according to the current signal detected and the voltage for providing to this loop, determine the resistance in loop, the resistance value of net point (Xi, Yj) to deserved loop is designated as Rijt1 here; Simultaneously, can after conductive grid be initially laid, detect and record the resistance value in the corresponding loop of each net point, here by net point (Xi, Yj) be designated as Rijt0 to the initial resistivity value in deserved loop, initial resistivity value is the background resistance value that initial measurement obtains when impervious barrier does not occur to leak.Like this, by the resistance value detecting loop corresponding to each net point of obtaining being compared with background resistance value, when this ratio, namely during the threshold value of resistance change rate more than a setting, just can judge that seepage appears in this net point place or neighbouring impervious barrier.
In practical application, the resistance value Rijt1 that net point (Xi, Yj) can be obtained when pre-test and the background resistance value Rijt0 of previous moment compares, the resistance change rate kij obtained:
Kij=(Rijt0-Rijt1)/Rijt0*100%, wherein, wherein i=1,2 ..., n, j=1,2 ..., m.
By measuring each net point, just can obtain the resistance change rate of each net point, and then obtain a matrix K:
Like this, by checking this matrix K, when the resistance change rate wherein occurred is greater than setting threshold value, just can think that seepage appears in the net point place of correspondence, meanwhile, can be defined as closest to seepage net point by the net point corresponding according to rate of change maximal value; Or, the resistance change rate that each net point that also can obtain according to certain a period of time periodically measurement is corresponding, by observing resistance change rate situation of change corresponding to net point, determine (such as whether Seepage increases the weight of leakage scenarios, or whether Seepage relaxes), to determine whether to repair timely seepage.Particularly, when impervious barrier generation seepage in place, when percolate diffuses to a certain net point, high resistant characteristic between the loop that two wires that the insulation of this net point place is arranged are formed will be changed, the loop of two wire formation will become low-resistance characteristic, resistance change rate now by detecting this net point obtained will be comparatively large, and then can determine that seepage appears in this net point place impervious barrier.Such as, the net point producing leakage is (Xa, Yb), and the loop be made up of wire Xa and wire Yb presents low-resistance feature, measure the resistance change rate kab obtained, this value is comparatively large, such as, exceed setting threshold value, just can determine to occur seepage, further, can compare according to the resistance change rate kij with other net points (Xi, Yj), the maximum net point of resistance change rate is very likely just near leak location; Meanwhile, also can judge the region roughly of Seepage occurs, and then the problem that seepage appears in impervious barrier can be oriented accurately; Meanwhile, also can analyze continuous a period of time, in the value that the different measuring cycle records, determine leak magnitude, and the particular location of seepage.
As a rule, if when seepage occurs impervious barrier, effusion may be diffused into multiple net point, therefore, during impervious barrier generation seepage, can detect that the resistance change rate at adjacent continuous multiple net point places can exceed default threshold value.Thus, the region producing Seepage can also be determined.
In practical application, can by predetermined period, the matrix K of real-time acquisition different cycles, and then whether can occur that seepage detects to impervious barrier, simultaneously, when seepage appears in impervious barrier, also can detect the diffusion zone of Seepage in real time, the range of scatter of percolate when leaking impervious barrier is monitored.Separately, also by analyzing the resistance change rate in the matrix K of different cycles, determining seepage range of scatter and seepage trend, can accurately orient the net point occurring leakage, and then determining that the position of seepage appears in impervious barrier.
Fig. 3 is the structural representation of monitor and detection device in the utility model embodiment.The present embodiment, as shown in Figure 3, above-mentioned monitor and detection device 20 specifically can comprise signal generating circuit 201, data acquisition circuit 202 and data processing circuit 203, wherein:
Signal generating circuit 201, for each loop providing source signal respectively to the arbitrary wire composition in the arbitrary wire in the first wire group 101 and the second wire group 102;
Data acquisition circuit 202, for when signal generating circuit 201 is to primary Ioops providing source signal in each loop, gathers the effective electric signal in this primary Ioops;
Data processing circuit 203, judge whether two wires cross places in this primary Ioops occur seepage for the effective electric signal in this primary Ioops of collecting based on data acquisition circuit 202, simultaneously, based on the electric signal in each loop that data acquisition circuit collects, determine that each grid point locations that seepage is corresponding appears in impervious barrier.
In practical application, signal generating circuit 201 and data acquisition circuit 202 can carry out powering and data acquisition within the cycle of default settings, guarantee like this to be energized respectively to each loop and to gather electric signal.During specific implementation, by signal generating circuit 201 when for primary Ioops providing source signal, a control signal can be sent and gathers to data acquisition circuit 202; Or, can, by the cycle of presetting, power to each loop respectively by signal generating circuit 201, and data acquisition circuit 202 can carry out the collection of electric signal by the same cycle; Or, can be concentrated by the controller of outside and control, during to ensure to power to the same circuit, the electric signal on it can be gathered simultaneously; Or, also can give each loop power supply by signal generating circuit 201 by predetermined period, and data acquisition circuit 202 continuous collecting, and then electric signal corresponding when determining each loop power supply by the power-up period of signal generating circuit.In practical application, suitable power supply and signals collecting mode can be selected as required.
In the present embodiment, after will illustrate as an example to carry out centralized control as the data processing circuit 203 of Centralized Controller, in practical application, be not limited thereto, as long as can collect accurately each loop energising time electric signal.In the present embodiment, data acquisition circuit 202 is specially signal acquisition circuit, and can be made up of current sensor etc., particular circuit configurations is not particularly limited, as long as can collect the current signal on loop.
Fig. 4 is a structural representation of the utility model embodiment embody rule.In the present embodiment, in conductive grid 10, each loop that arbitrary wire in arbitrary wire in first wire group 101 and the second wire group 102 forms is respectively arranged with gate-controlled switch, and the two ends of signal source are connected to by common wire's section, particularly, as shown in Figure 4, in first wire group 101, each wire holds equal physical connection together at A, the other end is not all connected, same, each wire in second wire group 102 holds equal physical connection together at B, the other end is not also all connected, and side a and b is connected by wire C, namely each loop that each net point is corresponding has common wire section C, and signal generating circuit 201 comprises signal source 2011, and on-off controller 2012 and by on-off controller 2012 control multiple gate-controlled switch T, wherein, signal source 2011 is connected in common wire section C, corresponding loop is in series with gate-controlled switch T to each net point in conductive grid 10 respectively, each gate-controlled switch T is all connected with on-off controller 2012, on-off controller 2012 is by controlling opening or closing of each gate-controlled switch T, respectively to the loop providing source signal that each net point in conductive grid is corresponding, namely signal source 2011 has a voltage, when the gate-controlled switch T on primary Ioops closes under on-off controller 2012 controls, a voltage will be provided for loop, now, the electric signal in this loop just can be gathered by data acquisition circuit 202.
In the present embodiment, described gate-controlled switch T is specifically as follows relay switch, can be electromagnetic relay device particularly, and on-off controller 2012 can by predetermined period, respectively to the relay switch energising on each loop, to control the break-make in each loop, there is good switch control rule effect.The low-voltage control circuit that this on-off controller can be made up of controllers such as single-chip microcomputers, according to the cycle of setting or other control signal, can control the break-make of each controlled switch respectively.In Fig. 4, do not provide the connecting line between gate-controlled switch T and on-off controller, but in practical application, each gate-controlled switch T is all connected with on-off controller.
In the present embodiment, as shown in Figure 4, described data acquisition circuit 202 specifically can comprise signal acquisition circuit 2021 and analog to digital conversion circuit 2022, wherein, signal acquisition circuit 2021 can be specifically current sensor or inductor, can detect the current signal flowed through in loop in real time; Analog to digital conversion circuit 2022 is electrically connected with signal acquisition circuit 2021, and the current signal that can be gathered converts corresponding digital signal in real time to, specifically can adopt the A/D device of 16.Such data processing circuit 203 just can pass the electric current of coming according to the analog to digital conversion circuit obtained, and determines whether the impervious barrier at the net point place on corresponding loop occurs seepage.During specific implementation, this data acquisition circuit 202 also can include single-chip microcomputer and cache memory section etc., to process and buffer memory the signal gathered, and then the data of buffer memory are transferred to data processing circuit 203 processes.
In the present embodiment, described data processing circuit 203 can be specifically a central controller, can be processed the signal gathered by it, and can control power-supply circuit 201, to provide power supply respectively to each loop, particularly, control each gate-controlled switch T by gauge tap controller 2012, to realize providing power supply respectively to each loop.
As shown in Figure 5, in the present embodiment, data processing circuit 203 also can be arranged on different positions from data acquisition circuit 202, and namely data processing circuit can be arranged on such as control desk etc., can at a distance to collecting data focus on, particularly, as shown in Figure 5, this monitor and detection device 20 also can comprise data communication module 204, is connected with data acquisition circuit 202, for the electric signal that data acquisition circuit is gathered, by communication link to data processing circuit 202.This data communication module 204 can be connected with the communication interface on data processing circuit at a distance by cables such as wired the Internet/LAN (Local Area Network), sends to data processing circuit to process the current digital signal collected; Or, this data communication module 204 also can be wireless communication module, such as mobile communication module, comes wirelessly current digital signal to be transferred to Value Data treatment circuit, and now data processing circuit also should have corresponding wireless communication module to receive corresponding signal.In practical application, form, the medium that Signal transmissions adopts is not particularly limited.
Like this, by data processing circuit 203 is arranged on the positions such as control desk, make maintainer just can determine whether impervious barrier occurs seepage based on measuring the data obtained at worktable; The described controller as data processing circuit 203 can be specifically computer equipment etc., it can be carried out automatic analysis and detect the data obtained by the data analysis software on it, and automatically generate above-mentioned matrix K, and can based on the data in matrix K, whether real-time analysis impervious barrier there is seepage, meanwhile, also can show in real time over the display; Staff further, can also warning device being connected with, when seepage being detected, sending warning message by warning device, so that can safeguard impervious barrier in time.
When also needing to control power-supply circuit as data processing circuit 203, control signal to be sent to by wireless communication module the collection that power-supply circuit and data acquisition circuit carry out power supply supply and electric signal by controller.
Wherein, the controller as data processing circuit 203 also can to detecting historical data stores, and inquiry, printing reports etc.
In practical application, the impervious element such as landfill yard, solution pool, when building, can lay multi-layer H DPE film impervious barrier lining or individual layer HDPE film impervious barrier, and conductive grid can be laid on the bottom of detected impervious barrier, and carry out seepage on-line checkingi to the impervious barrier on it.When detected impervious barrier does not occur to leak, the resistance characteristic in the loop that each net point in conductive grid is corresponding would not change.
In practical application, above-mentioned power-supply circuit specifically can provide high-voltage signal source, specifically, can be adopt high frequency switching converter technology to convert alternating current to high voltage direct current, can utilize pulse width modulation (PWM) technology realize AC DC conversion.By providing high-voltage signal, the accuracy of testing result can be improved; Meanwhile, if provide high pressure, so data acquisition circuit realizes electric isolution by coupled circuit, to guarantee the safety of data acquisition circuit, avoids affected by high.
To sum up, the seepage of seepage-proof layer detection system that the utility model embodiment provides, by detecting the loop with the composition of wire between two of a point of crossing in the conductive grid be arranged on below impervious barrier, the electric signal that can detect based on each loop of different time, determine whether the point of crossing place of the wire in each loop produces Seepage, thus can determine whether impervious barrier seepage occurs, and there is the position of seepage.The system that the utility model provides can detect the seepage of impervious barrier in real time, and it has easy to detect, is convenient to the feature realized.When being confirmed the leak location that impervious barrier occurs by above-mentioned check system, just can repair impervious barrier, to stop further seepage, improve anti-seepage effect.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (9)
1. a seepage of seepage-proof layer detection system, is characterized in that, comprising:
Conductive grid, be laid on the below of impervious barrier, described conductive grid comprises by the first wire group of first direction arrangement and the second wire group by second direction arrangement, arbitrary wire in described first wire group all has a point of crossing with the arbitrary wire square crossing in the second wire group, each wires cross place forms each net point in described conductive grid, and two wire insulations at each net point place are arranged;
Monitor and detection device, for each loop providing source signal respectively to the arbitrary wire composition in the arbitrary wire in described first wire group and the second wire group, and the effective electric signal gathered respectively in each loop, and based on the electric signal in each loop of different time collection, determine whether the impervious barrier of the infall of two wires in each loop occurs seepage.
2. system according to claim 1, is characterized in that, the distance between each net point is identical, or in the scope of the value preset.
3. system according to claim 1, is characterized in that, described monitor and detection device comprises signal generating circuit, data acquisition circuit and data processing circuit, wherein:
Described signal generating circuit, for each loop providing source signal respectively to the arbitrary wire composition in the arbitrary wire in described first wire group and the second wire group;
Described data acquisition circuit, for when described signal generating circuit is to primary Ioops providing source signal in described each loop, gathers the effective electric signal in described primary Ioops;
Described data processing circuit, judge whether two wires cross places in described primary Ioops occur seepage for the effective electric signal in the described primary Ioops that collects based on described data acquisition circuit, simultaneously, based on the electric signal in each loop that described data acquisition circuit collects, determine that each grid point locations that seepage is corresponding appears in impervious barrier.
4. system according to claim 3, is characterized in that, each loop that the arbitrary wire in described first wire group and the arbitrary wire in the second wire group form is respectively arranged with gate-controlled switch, is connected to the two ends of signal source by common wire's section;
Described signal generating circuit comprises described signal source, and the on-off controller be connected with the gate-controlled switch on each loop, and described signal source is connected in common wire's section;
Described on-off controller passes through the opening and closing controlling each gate-controlled switch, by described signal source respectively to each loop providing source signal.
5. system according to claim 4, is characterized in that, each gate-controlled switch is relay switch, and described on-off controller controls the break-make of corresponding circuit by pilot relay.
6. system according to claim 3, is characterized in that, described data acquisition circuit comprises: signal acquisition circuit and analog to digital conversion circuit, wherein:
Described signal acquisition circuit, for gathering the effective electric signal of each loop when providing source signal;
Analog-digital conversion circuit as described, the simulating signal for the electric signal gathered by described signal acquisition circuit converts the digital signal to correspondence to;
Described data processing circuit, for obtaining the value of electrical signals that analog-digital conversion circuit as described collects, determines whether the impervious barrier at the net point place on corresponding loop occurs seepage.
7. system according to claim 3, is characterized in that, also comprises:
Data communication module, is connected with described data acquisition circuit, for the electric signal gathered by described data acquisition circuit, by communication link to described data processing circuit.
8., according to the arbitrary described system of claim 3-7, it is characterized in that, described data processing circuit, is specially central controller.
9. system according to claim 8, is characterized in that, described central controller, also for controlling described signal generating circuit, respectively to each loop providing source signal of the arbitrary wire composition in the arbitrary wire in described first wire group and the second wire group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420354107.1U CN204064593U (en) | 2014-06-27 | 2014-06-27 | Seepage of seepage-proof layer detection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850516A (en) * | 2015-05-20 | 2018-03-27 | 沙特***石油公司 | Detect the sampling technique of hydrocarbon seepage |
| CN109738138A (en) * | 2019-01-31 | 2019-05-10 | 河北工程大学 | A kind of method and system using traveling wave positioning HDPE film leak location |
| CN110297037A (en) * | 2018-03-23 | 2019-10-01 | 中国环境科学研究院 | A kind of detection system and method for vertical seepage control layer |
| US11614378B2 (en) | 2017-01-06 | 2023-03-28 | Direct-C Limited | Polymeric nanocomposite based sensor and coating systems and their applications |
-
2014
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850516A (en) * | 2015-05-20 | 2018-03-27 | 沙特***石油公司 | Detect the sampling technique of hydrocarbon seepage |
| CN107850516B (en) * | 2015-05-20 | 2021-05-28 | 沙特***石油公司 | Sampling technique for detecting hydrocarbon leaks |
| US11614378B2 (en) | 2017-01-06 | 2023-03-28 | Direct-C Limited | Polymeric nanocomposite based sensor and coating systems and their applications |
| CN110297037A (en) * | 2018-03-23 | 2019-10-01 | 中国环境科学研究院 | A kind of detection system and method for vertical seepage control layer |
| CN109738138A (en) * | 2019-01-31 | 2019-05-10 | 河北工程大学 | A kind of method and system using traveling wave positioning HDPE film leak location |
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