CN104111152B - Seepage of seepage-proof layer detecting system - Google Patents
Seepage of seepage-proof layer detecting system Download PDFInfo
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- CN104111152B CN104111152B CN201410299850.6A CN201410299850A CN104111152B CN 104111152 B CN104111152 B CN 104111152B CN 201410299850 A CN201410299850 A CN 201410299850A CN 104111152 B CN104111152 B CN 104111152B
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Abstract
The present invention provides a kind of seepage of seepage-proof layer detecting system.The system includes conductive grid, it is laid on the lower section of impervious barrier, the conductive grid includes the first wire group and the second wire group arranged by preset rules, any wire in the first wire group is with any wires cross in the second wire group and with a crosspoint, two wire insulations at each mesh point formed at each wires cross in the conductive grid, each mesh point are set；Monitor and detection device, each loop for any wire composition in any wire respectively into the first wire group and the second wire group provides source signal, and effective electric signal in each loop is gathered respectively, and based on the electric signal in each loop not gathered in the same time, determine whether the infall and its neighbouring impervious barrier of two in each loop wires seepage occur.Whether the detecting system that the present invention is provided, effectively can produce seepage to impervious barrier and detect, and positioning leak location, leakage monitoring pollution range.
Description
Technical field
The present invention relates to impervious barrier technology, more particularly to a kind of seepage of seepage-proof layer detecting system.
Background technology
With economic rapid growth, China's solid waste yield is in increasing trend, the house refuse amount of clearing in 2010
1.5 hundred million tons are alreadyd exceed, industrial dangerous waste yield is 14,290,000 tons, and hazardous waste storage capacity over the years is up to hundred million tons, largely
The solid waste of generation is very important to the potentially danger that environment is polluted.Landfill stabilization is the final of solid waste
Disposal options.When carrying out landfill disposal to waste, to prevent from causing secondary pollution to underground water, soil etc., it is necessary in landfill
The artificial impervious liner of field laying, will isolate inside and outside landfill yard, prevent the pollutant percolate in landfill yard from entering soil and ground
Lower water, the synthetic material of artificial impervious liner mainly uses high density polyethylene (HDPE) (HDPE).In landfill yard construction, and runed
Cheng Zhong, easily because construction quality or operation are improper, causes impervious barrier seepage occur.The hundreds of families in the whole nation will be newly-built solid waste
Landfill stabilization facility, it would be highly desirable to carried out its safe operation situation in supervision using seepage of seepage-proof layer on-line monitoring and detection technique.
Current existing seepage of seepage-proof layer detection technique, due to cost reason, it is impossible to accomplish extensive popularization and application.
On the other hand, large scale industry evaporation pond, storage slag and industrial liquid storage tank, from its environmental sensitivity and performance of enterprises angle
Degree sets out, also impervious barrier HDPE film leak detection problem urgently to be resolved hurrily.If Fujian Zijin Mining and the mining industry of Guangxi Gold river are due to oozing
Leakage causes river pollution.With the generation of various industrial environment hazardous events, strengthen the online monitoring of leakage of its seepage control system
It is also extremely urgent with detecting.
The content of the invention
It is an object of the invention to provide a kind of seepage of seepage-proof layer detecting system, whether oozed with effective detection impervious barrier
Leakage, and can determine whether the position of seepage, monitoring pollution scope.
The present invention provides a kind of seepage of seepage-proof layer detecting system, including：
Conductive grid, is laid on the lower section of impervious barrier, and the conductive grid includes the first wire arranged by preset rules
Group and the second wire group, any wire in the first wire group is with any wires cross in the second wire group and having
Two wire insulations at each mesh point formed at one crosspoint, each wires cross in the conductive grid, each mesh point are set
Put；
Monitor and detection device, for any in any wire respectively into the first wire group and the second wire group
Each loop of wire composition provides source signal, and gathers effective electric signal in each loop respectively, and is adopted based on different time
Electric signal in each loop of collection, determines whether the impervious barrier of the infall of two in each loop wires seepage occurs.
In above-mentioned system, the distance between each mesh point is identical, or in the range of default value.
In above-mentioned system, the monitor and detection device is included at signal generating circuit, data acquisition circuit and data
Circuit is managed, wherein：
The signal generating circuit, in any wire respectively into the first wire group and the second wire group
Each loop of any wire composition provides source signal；
The data acquisition circuit, source letter is provided for the primary Ioops in the signal generating circuit into each loop
Number when, gather effective electric signal in the primary Ioops；
The data processing circuit, for effective electricity in the primary Ioops that are collected based on the data acquisition circuit
Signal judges whether seepage occur at two wires cross in the primary Ioops, meanwhile, adopted based on the data acquisition circuit
Collect the electric signal in obtained each loop, determine that the corresponding each grid point locations of seepage occurs in impervious barrier.
In above-mentioned system, what any wire in any wire and the second wire group in the first wire group was constituted
Gate-controlled switch is respectively arranged with each loop, the two ends of signal source are connected to by common wire's section；
The signal generating circuit includes the signal source, and the switch control being connected with the gate-controlled switch on each loop
Device, the signal source is connected in common wire's section；
The switch controller is by controlling the opening and closing of each gate-controlled switch, from the signal source respectively to each loop
Source signal is provided.
In above-mentioned system, each gate-controlled switch is relay switch, and the switch controller is controlled by control relay
The break-make of corresponding circuit processed.
In above-mentioned system, the data acquisition circuit includes：Signal acquisition circuit and analog to digital conversion circuit, wherein：
The signal acquisition circuit, for gathering effective electric signal of each loop when providing source signal；
Analog-digital conversion circuit as described, the analog signal of the electric signal for the signal acquisition circuit to be gathered is converted into pair
Corresponding data signal；
The data processing circuit, for obtaining the value of electrical signals that analog-digital conversion circuit as described is collected, it is determined that corresponding to back
Whether the impervious barrier at mesh point on road there is seepage.
In above-mentioned system, it may also include：
Data communication module, is connected with the data acquisition circuit, for the telecommunications for gathering the data acquisition circuit
Number, pass through communication link to the data processing circuit.
In above-mentioned system, the data processing circuit, specially central controller.
In above-mentioned system, the central controller is additionally operable to control the signal generating circuit, respectively to described first
Each loop of any wire composition in any wire and the second wire group in wire group provides source signal.
Seepage of seepage-proof layer detecting system provided in an embodiment of the present invention, can pass through the conductive mesh to being arranged on below impervious barrier
In lattice with a crosspoint wire two-by-two composition loop detected, the electricity that can be detected based on each loop of different time
Signal, determines whether the intersection of the wire in each loop produces Seepage, so as to can determine that whether impervious barrier oozes
Leakage, and occur the position of seepage.The system that the present invention is provided can detect the seepage of impervious barrier in real time, and it has detection side
Just, the characteristics of being easy to implement.
Brief description of the drawings
Fig. 1 is the theory structure schematic diagram of seepage of seepage-proof layer detecting system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of conductive grid in the embodiment of the present invention；
Fig. 3 is the structural representation of monitor and detection device in the embodiment of the present invention；
Fig. 4 is a structural representation of concrete application of the embodiment of the present invention；
Fig. 5 is another structural representation of concrete application of the embodiment of the present invention.
Embodiment
The situation of seepage occurs for impervious barrier, the present invention provides the technical scheme that embodiment is provided, by impervious barrier
One layer of conductive grid is laid below, by each loop based on the two wires composition that each mesh point is formed in conductive grid in difference
Electric signal when time is conductive respectively, to determine whether the impervious barrier at each mesh point of correspondence occurs seepage, and produces seepage
Position.The realization of technical solution of the present invention will be described in detail with instantiation below.
As shown in figure 1, being the theory structure schematic diagram of seepage of seepage-proof layer detecting system provided in an embodiment of the present invention.As schemed
Shown in 1, the seepage of seepage-proof layer detecting system includes conductive grid 10, and monitor and detection device 20, and wherein conductive grid 10 is spread
It is located at the lower section of impervious barrier to be detected, monitor and detection device 20 can be by forming two of each mesh point in conductive grid 10
The loop of wire composition is separately energized, and detects effective electric signal in loop when different time is powered, to determine respective grid points
Whether the impervious barrier at place produces seepage.Simultaneously as mesh point can be predefined with respect to the position of impervious barrier, therefore, can be accurate
Determine that impervious barrier produces the particular location of seepage.
As shown in Fig. 2 being the structural representation of conductive grid in the embodiment of the present invention.The conductive grid 10 is laid on to be measured
The lower section of the impervious barrier of examination, as shown in Fig. 2 the conductive grid 10 includes the first wire group 101 and the arranged by preset rules
There are multiple wires respectively in two wire groups 102, the first wire group 101 and the second wire group 102；In first wire group 101
Any wire with any wires cross in the second wire group 102, and only have a crosspoint, i.e. the first wire group 101 in
Wire between be not in intersect, be also not in intersect between the wire in the second wire group, be shape at each wires cross
Into each mesh point in conductive grid 10, so as to form conductive grid 10；Meanwhile, at each mesh point in conductive grid 10
Two wire insulations are set, as shown in Fig. 2 two wires at mesh point Q are in insulation set in infall.In the present embodiment,
For purposes of illustration only, during the corresponding loop of mesh point described below, referring to the loop of two wires composition to form the mesh point.
As shown in Fig. 2 the concretely rectangular lattice structure of conductive grid 10 in the present embodiment, wherein, the first wire group 101
In any wire set with any wire square crossing in the second wire group 102, i.e. respectively leading in the first wire group 101
Line is be arranged in parallel in a first direction, and each wire in the second wire group 102 is set vertical with first direction second direction is parallel
Put.It is arranged to rectangular lattice structure so that each grid point locations in conductive grid 10 can be determined easily, so, prevented
During infiltration layer leak detection, it is easier to determine the leak location of impervious barrier.In practical application, conductive grid is except that can be rectangle net
Especially or the wire in wire and the second wire group in similar round, i.e. the first wire group can in circular arc set,
The present embodiment is not limited the concrete shape of conductive grid.Therefore, in practical application, the first wire group in conductive grid and
Wire in second wire group can also press arc as needed in addition to intersecting this default rule arrangement by parallel vertical
It is regularly arranged, form the structure of similar round.
In practical application, each wire in above-mentioned conductive grid can be specifically exposed conductive cords, for example, can be
Stainless steel steel wire rope, the spacing that can select between a diameter of 2mm steel wire rope, steel wire rope can use 5m, and steel wire rope infall can lead to
Cross sprays insulating material and carry out insulation set, the insulated lengths of spraying can be 50cm.I.e. each wire is except being phase at mesh point
Mutually insulation is outer, and the place outside grid point locations is in naked state, so, when seepage of seepage-proof layer, if there is percolate warp
A certain grid point locations are crossed, then two wire insulation properties that grid is pointed out will change, in the electric action of percolate
Under, two wires are become into nonisulated state by state of insulation, so, the loop of two wire compositions will be become by high resistant characteristic
For low-resistance characteristic, the loop so measured will be different in the electric signal of two states of high resistant characteristic and low-resistance characteristic, exactly
It can determine whether seepage occur at mesh point based on this change.
In practical application, the distance between each mesh point can be identical in conductive grid 10, or in the range of default value,
So, it can be easy to determine the relative position of each mesh point, and then be easy to determine the leak location of impervious barrier.Typically, it is conductive
Each mesh point in grid 10 is to be arranged regularly, and the distance between each mesh point, and relative position can determine that, such as Fig. 2 institutes
The grid of the rectangular mesh shown, so, the electric signal in the loop that two wires for forming each mesh point by sequence detection are constituted,
It is assured that at correspondence mesh point whether occur seepage.In practical application, can according to seepage of seepage-proof layer accuracy of detection needs, if
Put the network of suitable distance mesh point, and suitable shape network.
, can be in advance to each for ease of the determination of the relative position to each mesh point in conductive grid 10 in practical application
The wire arranged by preset rules in wire group is ranked up in order, and is numbered, so can the numbering based on each wire, really
Fixed corresponding mesh point, during test, can also be measured based on numbering, improve measurement efficiency and measurement effect.Specifically,
As shown in Fig. 2 in the conductive grid 10 of rectangular mesh, will respectively be led in the first wire group 101 by first direction is arranged in parallel
Line is respectively as the wire of X-direction, and number consecutively is X1, X2 ..., Xn, second direction parallel will be pressed in the second wire group 102
Each wire of row is respectively as the wire of Y-direction, number consecutively Y1, Y2 ..., Ym, wherein, n and m are greater than 0 natural number；
Each mesh point in conductive grid 10 can just utilize (Xi, Yj) to represent, wherein, 1≤i≤n, 1≤j≤m represent that first leads
The crosspoint formed between the wire Yj of the wire Xi of the i-th row in line group 101 and the jth row in the second wire group 102.This
Sample, is providing source signal, and carry out using monitor and detection device 20 for the corresponding loop of each mesh point in conductive grid 10
During the electrical signal detection of loop, it is possible to detected according to number order., can be according to the arrangement of conductive grid in the present embodiment
Rule, predefines position of each mesh point (Xi, Yj) below impervious barrier, or relative position relation, so, in subsequent detection
When judging to loop electric signal, the position for judging to occur seepage in impervious barrier that can be promptly and accurately.
In the present embodiment, any wire and the second wire that monitor and detection device 20 can respectively into the first wire group 101
Each loop of any wire composition in group 102 provides source signal, and gathers the electric signal in each loop respectively, and based on adopting
Electric signal in each loop of collection, determines whether the impervious barrier of the infall of two in each loop wires seepage occurs.Due to
Two wires of the intersection in each loop are in insulation set, if Seepage occurs for the impervious barrier of intersection or adjacent,
The electrical property (resistance in mainly loop changes) in the corresponding loop of respective grid points will be changed, therefore, according to detection
The electrical property in loop is assured that at respective grid points whether occur Seepage.
, can be by providing the power supply of predeterminated voltage respectively for the corresponding loop of each mesh point in practical application, and pass through inspection
Current signal of each loop in energization is surveyed, to determine whether occur Seepage at correspondence mesh point.Or, practical application
In, also can be by the changes of detectable voltage signals, to determine seepage whether occurs at mesh point, specifically, can be based on detection
Electric current, size of the voltage under different conditions come determine whether at mesh point occur seepage；Or, it is big also based on electric current
It is small, loop resistance change is determined to determine whether seepage occurs at mesh point.Below will be with electric current in measure loop, and really
Determine loop resistance variation pattern to determine whether produce seepage of seepage-proof layer phenomenon at corresponding mesh point.
In the present embodiment, when needing to detect whether the impervious barrier being laid on above conductive grid leaks, it is possible to
The electric signal in the loop of two wires formation of each mesh point is detected successively, to determine whether occur seepage at correspondence mesh point.
It will be illustrated below with the detection process of the conductive grid of rectangular mesh shown in Fig. 2：
First, the position of each mesh point in conductive grid 10 can be predefined.
The position of mesh point, the position of the relative impervious barrier determined when specifically can be according to laying wire, that is, in antiseepage
Position at layer.Can specifically be determined according to the above-mentioned each wire arranged by X-direction and Y-direction, for example mesh point (Xi,
Yj corresponding position) is meant that, according to the telecommunications in the loop for detecting the two wires composition to form the mesh point (Xi, Yj)
Number, when determining the position seepage of the corresponding impervious barrier of mesh point (Xi, Yj), it is possible to which correspondence finds the corresponding position of impervious barrier
Put, to be safeguarded to impervious barrier.Will each mesh point and impervious barrier actual position coordinate correspond, so, find one
Mesh point, it is possible to accurately determine impervious barrier correspondence position.
Secondly, by monitor and detection device, signal source is provided to the corresponding loop of each mesh point respectively in different time, and
Detect the electric signal in each loop respectively when providing signal source.
Finally, according to the electric signal in each loop of detection, impervious barrier position where determining the corresponding mesh point in each loop is
It is no seepage occur.
Specifically, by monitor and detection device 20, provide power to successively mesh point (X1, Y1), (X2, Y2) ..., (Xi,
Yj) ..., (Xn, Ym) corresponding loop, while signal source is provided to the corresponding loop of respective grid points, in measuring loop
Electric signal, be here current signal, and the current signal according to detection and the voltage to be provided to the loop, determine loop
Resistance, is designated as Rijt1 by mesh point (Xi, Yj) to the resistance value in deserved loop here；Meanwhile, can initially it be laid in conductive grid
Afterwards, the resistance value in each mesh point correspondence loop is detected and records, here by initial resistance of the mesh point (Xi, Yj) to deserved loop
Value is designated as Rijt0, and initial resistivity value is the background resistance value that initial measurement is obtained when impervious barrier is not leaked.So, lead to
Cross and compared the resistance value for detecting the obtained corresponding loop of each mesh point with background resistance value, when the ratio, that is, resistance
During the threshold value that rate of change is set more than one, so that it may judge that seepage occurs in the impervious barrier at or near the mesh point.
In practical application, mesh point (Xi, Yj) can currently be measured to the background of obtained resistance value Rijt1 and previous moment
Resistance value Rijt0 is compared, obtained resistance change rate kij：
Kij=(Rijt0-Rijt1)/Rijt0*100%, wherein, wherein i=1,2 ..., n, j=1,2 ..., m.
By measuring each mesh point, it is possible to obtain the resistance change rate of each mesh point, and then obtain a matrix K：
So, by checking the matrix K, when the resistance change rate wherein occurred is more than given threshold, it is possible to think
There is seepage at corresponding mesh point, meanwhile, it can be defined as according to the corresponding mesh point of rate of change maximum closest to seepage
Mesh point；Or, the corresponding resistance change rate of each mesh point that can be also obtained according to certain a period of time periodically measurement passes through
The corresponding resistance change rate situation of change of mesh point is observed, determines (for example whether Seepage aggravates leakage scenarios, or seepage
Whether phenomenon relaxes), to determine whether timely to repair seepage.Specifically, when the impervious barrier in place oozes
During leakage, when percolate diffuses to a certain mesh point, the height at the mesh point between the loop of two wires formation of insulation set
Resistance characteristic will be changed, and the loop of two wire formation will become low-resistance characteristic, now by detecting the obtained grid
The resistance change rate of point will be larger, and then can determine that seepage occurs in impervious barrier at the mesh point.For example, producing the net of leakage
Lattice point is (Xa, Yb), shows low-resistance feature by wire Xa and wire the Yb loop constituted, measures obtained resistance change rate
Kab, the value is larger, such as more than given threshold, it is possible to it is determined that be likely to occur seepage, further, can according to other nets
The resistance change rate kij of lattice point (Xi, Yj) compares, and the maximum mesh point of resistance change rate is just very likely closest to seepage
Position；It is also possible to judge occur the region substantially of Seepage, and then it can accurately orient impervious barrier and ooze
The problem of leakage；Meanwhile, continuous a period of time can be also analyzed, the value measured in different measurement periods determines leak magnitude, and
The particular location of seepage.
As a rule, when impervious barrier is in the event of seepage, effusion may be diffused into multiple mesh points, therefore, antiseepage
When seepage occurs for layer, can detect the resistance change rate at adjacent continuous multiple mesh points can exceed default threshold value.Thus,
The region for producing Seepage can also be determined.
In practical application, the matrix K of different cycles can be obtained in real time by predetermined period, and then whether impervious barrier can be gone out
Now seepage is detected, meanwhile, when seepage occurs in impervious barrier, the diffusion zone of Seepage can be also detected in real time, to antiseepage
The range of scatter of percolate during layer leakage is monitored.In addition, the resistance variations in matrix K that can also be by analyzing different cycles
Rate, determines seepage range of scatter and seepage trend, can be accurately positioned out the mesh point for leakage occur, and then determine anti-
There is the position of seepage in infiltration layer.
Fig. 3 is the structural representation of monitor and detection device in the embodiment of the present invention.The present embodiment, as shown in figure 3, above-mentioned
Monitor and detection device 20 specifically may include signal generating circuit 201, data acquisition circuit 202 and data processing circuit 203, its
In：
Signal generating circuit 201, in any wire respectively into the first wire group 101 and the second wire group 102
Any wire composition each loop provide source signal；
Data acquisition circuit 202, when providing source signal for the primary Ioops in signal generating circuit 201 into each loop,
Gather effective electric signal in the primary Ioops；
Data processing circuit 203, for effective electric signal in the primary Ioops that are collected based on data acquisition circuit 202
Judge whether seepage occur at two in the primary Ioops wires cross, meanwhile, based on data acquisition circuit collect it is each
The electric signal in loop, determines that the corresponding each grid point locations of seepage occurs in impervious barrier.
In practical application, signal generating circuit 201 and data acquisition circuit 202 can be supplied within the cycle of default settings
Electricity and data acquisition, so ensure each loop can be separately energized and be gathered electric signal.When implementing, can occur electricity by signal
Road 201 sends a control signal and is acquired to data acquisition circuit 202 when providing source signal for primary Ioops；Or, it can press
In the default cycle, powered respectively to each loop by signal generating circuit 201, and data acquisition circuit 202 can be by the same cycle
To enter the collection of horizontal electrical signal；Or, it can be controlled by outside controller to concentrate, to ensure to power to the same circuit
When, electric signal thereon can be gathered simultaneously；Or, predetermined period can be also pressed by signal generating circuit 201 to each loop power supply, and
The continuous collecting of data acquisition circuit 202, it is corresponding when then determining each loop power supply by the power-up period of signal generating circuit again
Electric signal.In practical application, suitable power supply and signal acquisition mode can be selected as needed.
In the present embodiment, behind will be come using the data processing circuit 203 as Centralized Controller centralized control work
Illustrate for example, in practical application, it is not limited to this, as long as electric signal when can accurately collect each loop energization is i.e.
Can.In the present embodiment, data acquisition circuit 202 is specially signal acquisition circuit, can be made up of current sensor etc., physical circuit
Structure is not particularly limited, as long as the current signal on loop can be collected.
Fig. 4 is a structural representation of concrete application of the embodiment of the present invention.In the present embodiment, in conductive grid 10, the
Being respectively arranged with each loop of any wire composition in any wire and the second wire group 102 in one wire group 101 can
Control is switched, and is connected to the two ends of signal source by common wire's section, specifically, as shown in figure 4, each in the first wire group 101
Wire is physically joined together at A ends, and the other end is not attached to, likewise, each wire in the second wire group 102 is at B ends
It is physically joined together, the other end is also not attached to, and side a and b is connected by wire C, i.e., each mesh point is corresponding each
Loop has common wire's section C；And signal generating circuit 201 includes signal source 2011, and switch controller 2012 and opened
Multiple gate-controlled switch T that gateway controller 2012 is controlled, wherein, signal source 2011 is connected in common wire's section C, conductive grid 10
In each mesh point correspondence loop on be in series with gate-controlled switch T respectively, each gate-controlled switch T connects with switch controller 2012
Connect, switch controller 2012 can be by controlling opening or closing for each gate-controlled switch T, each mesh point into conductive grid respectively
Corresponding loop, which provides source signal, i.e. signal source 2011, has a voltage, when the gate-controlled switch T on primary Ioops is in switch controller
When being closed under 2012 controls, a voltage will be provided for loop, now, it is possible to pass through data acquisition circuit 202 and gather this time
Electric signal in road.
In the present embodiment, described gate-controlled switch T is specifically as follows relay switch, can be specifically electromagnetic relay device
Part, and switch controller 2012 can be powered to the relay switch on each loop respectively by predetermined period, to control each loop
Break-make, with preferable switch control effect.The low electricity that the switch controller can be made up of controllers such as single-chip microcomputers
Voltage-controlled circuit processed, cycle that can be according to setting or other control signals, to control the break-make of each controlled switch respectively.In Fig. 4, and
The connecting line between gate-controlled switch T and switch controller is not provided, but in practical application, each gate-controlled switch T is and switch
Controller connection.
In the present embodiment, as shown in figure 4, described data acquisition circuit 202 specifically may include signal acquisition circuit 2021
With analog to digital conversion circuit 2022, wherein, signal acquisition circuit 2021 can be specifically current sensor or inductor, can examine in real time
Flow measurement is through the current signal in loop；Analog to digital conversion circuit 2022 is electrically connected with signal acquisition circuit 2021, can be gathered
Current signal is converted into corresponding data signal in real time, can specifically use the A/D devices of 16.Such data processing circuit 203
Can be just transmitted through according to the analog to digital conversion circuit of acquisition come electric current, it is determined that correspondence loop on mesh point at impervious barrier whether
There is seepage.When implementing, the data acquisition circuit 202 may also include single-chip microcomputer and cache memory section etc., so as to right
The signal of collection is handled and cached, and then again handles the data transfer of caching to data processing circuit 203.
In the present embodiment, described data processing circuit 203 can be specifically a central controller, can be by it to collection
Signal is handled, and power-supply circuit 201 can be controlled, and to provide power supply to each loop respectively, specifically, can be led to
Cross controlling switch controller 2012 to control each gate-controlled switch T, power supply is provided respectively to realize to each loop.
As shown in figure 5, in the present embodiment, data processing circuit 203 can also be arranged on different from data acquisition circuit 202
Position, i.e. data processing circuit may be provided at such as console, can at a distance to collect data are focused on, tool
Body, as shown in figure 5, the monitor and detection device 20 may also include data communication module 204, it is connected with data acquisition circuit 202,
For the electric signal for gathering data acquisition circuit, pass through communication link to data processing circuit 202.The data communication mould
Block 204 can be connected by the communication interface on the cables such as wired internet/LAN and the data processing circuit of distant place,
The current digital signal collected is sent into data processing circuit to be handled；Or, the data communication module 204 can also
It is wireless communication module, such as mobile communication module, wirelessly to transmit current digital signal to Value Data processing
Circuit, now data processing circuit should also there is corresponding wireless communication module to receive corresponding signal.It is right in practical application
The form of signal transmission use, medium are not particularly limited.
So, by the way that data processing circuit 203 is arranged on into the positions such as console so that attendant can be in workbench just
It can determine whether impervious barrier seepage occurs based on the obtained data of measurement；The described control as data processing circuit 203
Implement body processed can be computer equipment etc., and it can automatically analyze the number that detection is obtained by DAS thereon
According to, and automatically generate above-mentioned matrix K, it is possible to based on the data in matrix K, whether analysis impervious barrier there is seepage in real time,
Meanwhile, it can also be shown in real time over the display；Further, warning device can also be connected with, when detecting seepage,
Can be by warning device alert, so that staff can safeguard impervious barrier in time.
When also needing to be controlled power-supply circuit as data processing circuit 203, controller can be by wireless
Communication module sends control signals to power-supply circuit and data acquisition circuit and carries out adopting for power supply supply and electric signal
Collection.
Wherein, as data processing circuit 203 controller can also to detect historical data is stored, Yi Jicha
Inquiry, printing reports etc..
In practical application, the impervious element such as landfill yard, solution pool build when, can lay multi-layer H DPE films impervious barrier lining or
Individual layer HDPE film impervious barrier, and conductive grid can be laid on the bottom of detected impervious barrier, and impervious barrier thereon is oozed
Leak on-line checking.When detected impervious barrier is not leaked, the resistance in the corresponding loop of each mesh point in conductive grid
Characteristic would not change.
In practical application, above-mentioned power-supply circuit can specifically provide high-voltage signal source, specifically, can use
High frequency switching converter technology converts alternating current to high voltage direct current, you can using pulse width modulation (PWM) technology realize AC DC
Conversion.By providing high-voltage signal, the accuracy of testing result can be improved；Meanwhile, if providing high pressure, then data acquisition
Circuit can be realized by termination power and is electrically isolated, to ensure the safety of data acquisition circuit, it is to avoid affected by high.
To sum up, seepage of seepage-proof layer detecting system provided in an embodiment of the present invention, can be by being arranged on below impervious barrier
The loop of the composition of the wire two-by-two with a crosspoint in conductive grid is detected, can be detected based on each loop of different time
The electric signal arrived, determines whether the intersection of the wire in each loop produces Seepage, so as to whether can determine that impervious barrier
Generation seepage, and occur the position of seepage.The system that the present invention is provided can detect the seepage of impervious barrier in real time, and it has inspection
Survey convenient, the characteristics of being easy to implement.When confirming the leak location that impervious barrier occurs by above-mentioned inspection system, it is possible to right
Impervious barrier is repaired, and to prevent further seepage, improves anti-seepage effect.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (3)
1. a kind of seepage of seepage-proof layer detecting system, it is characterised in that including：
Conductive grid, is laid on the lower section of impervious barrier, the conductive grid include the first wire group arranged by preset rules and
Any wire in second wire group, the first wire group is handed over any wires cross in the second wire group and with one
Two wire insulations at each mesh point formed at crunode, each wires cross in the conductive grid, each mesh point are set, institute
Stating each mesh point in conductive grid utilizes (Xi, Yj) to represent, wherein, 1≤i≤n, 1≤j≤m, (Xi, Yj) represents described
The crosspoint formed between the wire Yj of the wire Xi of the i-th row in first wire group and the jth row in the second wire group；
Monitor and detection device, the monitor and detection device includes signal generating circuit, data acquisition circuit and data processing electricity
Road, wherein：
The signal generating circuit be used for successively provide source signal to mesh point (X1, Y1), (X2, Y2) ..., (Xi, Yj) ...,
(Xn, Ym) corresponding loop；
Be in series with gate-controlled switch respectively on each mesh point correspondence loop in the conductive grid, each gate-controlled switch with
Switch controller is connected, and the switch controller can control opening or closing for each gate-controlled switch by predetermined period, point
The corresponding loop of each mesh point not into the conductive grid provides source signal, and the source signal is to use high frequency switching converter
Technology converts alternating current to the high-voltage signal of high voltage direct current, and the data acquisition circuit is realized and high pressure by termination power
Signal source is electrically isolated, to ensure the security of the data acquisition circuit,
The data acquisition circuit includes signal acquisition circuit and analog to digital conversion circuit, in the signal generating circuit to each
When primary Ioops in loop provide source signal, gather effective electric signal in the primary Ioops, according to the current signal of detection and
For the voltage of the source signal provided to the loop, the resistance in each loop is determined, by the resistance in the corresponding loop of mesh point (Xi, Yj)
Value is designated as Rijt1, and analog-digital conversion circuit as described is electrically connected with the signal acquisition circuit, and the signal acquisition circuit is gathered
Current signal is converted into corresponding data signal in real time, and the data acquisition circuit also includes single-chip microcomputer and cache memory section,
Handled and cached with the signal to collection, then the data transfer of caching to the data processing circuit is handled,
The monitor and detection device also includes data communication module, and it is connected with the data acquisition circuit, for by the number
The electric signal gathered according to Acquisition Circuit is by communication link to the data processing circuit, and the monitor and detection device also connects
Warning device is connected to, when detecting seepage, by the warning device alert,
Mesh point (Xi, Yj) is currently measured to the background resistance value Rijt0 that obtained resistance value Rijt1 measures with previous moment to enter
Row compares, and obtained resistance change rate kij, wherein background resistance value Rijt0 are that measurement is obtained when impervious barrier is not leaked
The resistance value of correspondence mesh point, kij=(Rijt0-Rijt1)/Rijt0*100%, wherein i=1,2 ..., n, j=1,2 ..., m,
The resistance change rate for measuring obtained each mesh point is constituted into a matrix K, the matrix K is：
<mrow>
<mi>K</mi>
<mo>=</mo>
<mfenced open = "[" close = "]">
<mtable>
<mtr>
<mtd>
<msub>
<mi>k</mi>
<mn>11</mn>
</msub>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mn>12</mn>
</msub>
</mtd>
<mtd>
<mn>...</mn>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mrow>
<mn>1</mn>
<mi>m</mi>
</mrow>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>k</mi>
<mn>21</mn>
</msub>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mn>22</mn>
</msub>
</mtd>
<mtd>
<mn>...</mn>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mrow>
<mn>2</mn>
<mi>m</mi>
</mrow>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mn>...</mn>
</mtd>
<mtd>
<mn>...</mn>
</mtd>
<mtd>
<mn>...</mn>
</mtd>
<mtd>
<mn>...</mn>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>k</mi>
<mrow>
<mi>n</mi>
<mn>1</mn>
</mrow>
</msub>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mrow>
<mi>n</mi>
<mn>2</mn>
</mrow>
</msub>
</mtd>
<mtd>
<mn>...</mn>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mrow>
<mi>n</mi>
<mi>m</mi>
</mrow>
</msub>
</mtd>
</mtr>
</mtable>
</mfenced>
</mrow>
The data processing circuit is according to the matrix K, when the resistance change rate wherein occurred is more than given threshold, it is determined that correspondence
Mesh point at there is seepage, and the corresponding mesh point of rate of change maximum is defined as to the mesh point closest to seepage；Or,
The corresponding resistance change rate of each mesh point obtained according to certain a period of time periodically measurement, it is corresponding by observing mesh point
Resistance change rate situation of change, determines leakage scenarios.
2. seepage of seepage-proof layer detecting system according to claim 1, it is characterised in that each gate-controlled switch is opened for relay
Close, the switch controller controls the break-make of corresponding circuit by control relay.
3. seepage of seepage-proof layer detecting system according to claim 1, it is characterised in that the data processing circuit is center
Controller.
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| CN109839419B (en) * | 2018-03-23 | 2020-05-22 | 中国环境科学研究院 | Off-site detection system and method for impermeable layer |
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| CN113433049A (en) * | 2021-06-26 | 2021-09-24 | 武汉市深科工程检测有限公司 | Full-automatic concrete impermeability detection equipment and detection method |
| CN114216621B (en) | 2022-02-21 | 2022-05-17 | 成都理工大学 | Leakage detection and treatment simulation platform and simulation method |
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