CN104111151B - Seepage of seepage-proof layer detection method - Google Patents
Seepage of seepage-proof layer detection method Download PDFInfo
- Publication number
- CN104111151B CN104111151B CN201410299600.2A CN201410299600A CN104111151B CN 104111151 B CN104111151 B CN 104111151B CN 201410299600 A CN201410299600 A CN 201410299600A CN 104111151 B CN104111151 B CN 104111151B
- Authority
- CN
- China
- Prior art keywords
- seepage
- wire
- mtd
- loop
- mesh point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention provides a kind of seepage of seepage-proof layer detection method.This method is included in laying conductive grid below impervious barrier, wherein, 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；Each loop of any wire composition in any wire and the second wire group respectively into the first wire group provides source signal, and gathers effective electric signal in each loop respectively；Electric signal in each loop gathered based on different time, determines whether the impervious barrier of the infall of two in each loop wires seepage occurs.Whether the detection method 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 detection technique, more particularly to a kind of seepage of seepage-proof layer detection method.
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 detection method, 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 detection method, including：
Conductive grid is laid below impervious barrier, wherein, the conductive grid includes first leading by what preset rules were arranged
Any wire in line group and the second wire group, the first wire group with any wires cross and tool in the second wire group
There are two wire insulations at each mesh point formed at a crosspoint, each wires cross in the conductive grid, each mesh point
Set；
Each loop of any wire composition in any wire and the second wire group respectively into the first wire group
Source signal is provided, and gathers effective electric signal in each loop respectively；
Electric signal in each loop gathered based on different time, determine two wires in each loop infall it is anti-
Whether infiltration layer there is seepage.
In above-mentioned method, the conductive grid is specially rectangular mesh, any wire in the first wire group with
Any wire square crossing in second wire group is set, and intersection carries out insulation processing.
In above-mentioned method, the distance between each mesh point is identical, or in the range of default value.
In above-mentioned method, 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；
It is each that any wire in any wire and the second wire group respectively into the first wire group is constituted
Loop provides source signal, is specially：
By the opening and closing of the gate-controlled switch on each described loop of control, from the signal source respectively to each loop
Source signal is provided.
In above-mentioned method, each gate-controlled switch is relay switch.
In above-mentioned method, first direction each wire arranged in parallel will be pressed in the first wire group as X side
To wire, number consecutively is X1, X2 ..., Xn, will be in the second wire group by second direction each wire arranged in parallel point
Not as the wire of Y-direction, number consecutively Y1, Y2 ..., Ym, wherein, n and m are greater than 0 natural number；The conductive grid
In each mesh point utilize (Xi, Yj) to represent, wherein, 1≤i≤n, 1≤j≤m represent the i-th row in the first wire group
The crosspoint formed between the wire Yj of wire Xi and the jth row in the second wire group；
It is each that any wire in any wire and the second wire group respectively into the first wire group is constituted
Loop provides source signal, and gathers effective electric signal in each loop respectively, is specially：
Successively provide source signal to 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, the current signal in measuring loop；
The electric signal in each loop gathered based on different time, determines to obtain the infall of two wires in each loop
Whether impervious barrier there is seepage, is specially：
According to the current signal of detection and be the voltage of the source signal provided to the loop, the resistance in each loop is determined, will
The resistance value in the corresponding loop of mesh point (Xi, Yj) is designated as Rijt1；
The background resistance value Rijt0 that mesh point (Xi, Yj) is currently measured into obtained resistance value Rijt1 and previous moment enters
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, 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, so as to according to the matrix K, when wherein
When the resistance change rate of appearance is more than given threshold, determine occur seepage at corresponding mesh point, and by rate of change maximum pair
The mesh point answered is defined as the mesh point closest to seepage；Or, each net obtained according to certain a period of time periodically measurement
The corresponding resistance change rate of lattice point, by observing the corresponding resistance change rate situation of change of mesh point, determines leakage scenarios, wherein
Matrix K is：
Seepage of seepage-proof layer detection method 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 detection method that the present invention is provided can detect the seepage of impervious barrier in real time, and it has detection
It is convenient, the characteristics of being easy to implement.
Brief description of the drawings
Fig. 1 is the circuit principle structure schematic diagram provided in an embodiment of the present invention for realizing leak detection；
Fig. 2 is the structural representation of conductive grid in the embodiment of the present invention；
Fig. 3 is the schematic flow sheet of seepage of seepage-proof layer detection method provided in an embodiment of the present invention；
Fig. 4 is the structural representation that the embodiment of the present invention realizes monitor and detection device in the circuit of leak detection；
Fig. 5 is the electrical block diagram for a concrete application for realizing present invention method；
Fig. 6 is the electrical block diagram for another concrete application for realizing present invention method.
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, forms each loop of two wires composition of each mesh point in conductive grid by detecting 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.
First, the Cleaning Principle of detection method of the embodiment of the present invention is illustrated.
As shown in figure 1, being the circuit principle structure schematic diagram provided in an embodiment of the present invention for realizing leak detection.Such as Fig. 1
Shown, seepage of seepage-proof layer detection circuit mainly includes conductive grid 10, and monitor and detection device 20, wherein conductive grid 10
The lower section of impervious barrier to be detected is laid on, monitor and detection device 20 can be by forming the two of each mesh point in conductive grid 10
The loop of root wire composition is separately energized, and detects effective electric signal in loop when different time is powered, to determine corresponding grid
Whether the impervious barrier at point 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 a kind of structural representation of conductive grid in the embodiment of the present invention.The conductive grid 10 is laid on
The lower section of impervious barrier to be tested, as shown in Fig. 2 the conductive grid 10 includes the first wire group 101 arranged by preset rules
With the second wire group 102, there are multiple wires respectively in the first wire group 101 and the second wire group 102；First wire group 101
In any wire with any wires cross in the second wire group 102, and only have a crosspoint, i.e. the first wire group
Be not in intersect between wire in 101, be also not in intersect between the wire in the second wire group, at each wires cross
Each mesh point formed in conductive grid 10, so as to form conductive grid 10；Meanwhile, each mesh point in conductive grid 10
Two wire insulations at place are set, as shown in Fig. 2 two wires at mesh point Q are in insulation set in infall.The present embodiment
In, for purposes of illustration only, during the corresponding loop of mesh point described below, referring to returning for the two wires composition to form the mesh point
Road.
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.
The principle of seepage of seepage-proof layer detection is carried out to the inventive method above, and corresponding detection circuit has been carried out in detail
Illustrate, the specific measurement process measured in impervious barrier is illustrated below.Fig. 3 is that impervious barrier provided in an embodiment of the present invention oozes
The schematic flow sheet of leak detection method.As shown in figure 3, the present embodiment seepage of seepage-proof layer detection method specifically may include following step
Suddenly：
Step 101, conductive grid is laid below impervious barrier, wherein, the conductive grid is included by preset rules arrangement
The first wire group and the second wire group, any wire in the first wire group with any wire in the second wire group
Intersect and have and form two at each mesh point in the conductive grid, each mesh point at a crosspoint, each wires cross
Wire insulation is set；
Any wire composition in step 102, any wire respectively into the first wire group and the second wire group
Each loop source signal is provided, and gather effective electric signal in each loop respectively；
Electric signal in step 103, each loop gathered based on different time, determines the friendship of two wires in each loop
Whether the impervious barrier at fork there is seepage.
In above-mentioned steps 102, it can lay and lead first below impervious barrier when impervious barrier is laid in the region of Anti-seeping technology
Power grid.Wherein, conductive grid is specifically as follows the rectangular configuration shown in above-mentioned Fig. 2；The distance between each mesh point is identical, or
Person is in the range of default value.
In above-mentioned steps 102, when the conductive grid used in step 101 is the rectangular configuration shown in Fig. 2, and the first wire
Gate-controlled switch is respectively arranged with each loop of any wire composition in any wire and the second wire group in group, and is passed through
When common wire's section is connected to the two ends of signal source, the step is concretely：By controlling the gate-controlled switch on each loop
Open and close, source signal is provided to each loop respectively by the signal source of common wire's section connection from each loop.For ease of right
The control of gate-controlled switch, is connected on each loop to obtain gate-controlled switch concretely above-mentioned relay switch.
Specifically, first direction each wire arranged in parallel can will be pressed in the first wire group in advance as X-direction
Wire, number consecutively is X1, X2 ..., Xn, and second direction each wire arranged in parallel will be pressed in the second wire group as Y
The wire in direction, number consecutively Y1, Y2 ..., Ym, wherein, n and m are greater than 0 natural number；Each grid in conductive grid
Point utilizes (Xi, Yj) to represent, wherein, 1≤i≤n, 1≤j≤m represent the wire Xi and the of the i-th row in the first wire group
The crosspoint formed between the wire Yj of jth row in two wire groups.
Now, any in any wire respectively into the first wire group and the second wire group of above-mentioned steps 102 leads
Each loop of line composition provides source signal, and gathers effective electric signal in each loop respectively, concretely：Source letter is provided successively
Number to mesh point (X1, Y1), (X2, Y2) ..., (Xi, Yj) ..., (Xn, Ym) corresponding loop, corresponding to respective grid points
While loop provides signal source, the current signal in measuring loop.Wherein, the time interval of source signal is provided between each loop
Can be in the period of setting, such as 2s or 1min etc..
Meanwhile, above-mentioned step 103 specifically may include following steps：
According to the current signal of detection and be the voltage of the source signal provided to the loop, the resistance in each loop is determined, will
The resistance value in the corresponding loop of mesh point (Xi, Yj) is designated as Rijt1；
Mesh point (Xi, Yj) is currently measured to obtained resistance value Rijt1 and background resistance value Rijt0 to be compared, obtained
The resistance change rate kij arrived, wherein background resistance value Rijt0 are the corresponding mesh point that measurement is obtained when impervious barrier is not leaked
Resistance value：
Kij=(Rijt0-Rijt1)/Rijt0*100%, wherein, 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, so as to according to the matrix K, when wherein
When the resistance change rate of appearance is more than given threshold, determine occur seepage at corresponding mesh point, and by rate of change maximum pair
The mesh point answered is defined as the mesh point closest to seepage；Or, each net obtained according to certain a period of time periodically measurement
The corresponding resistance change rate of lattice point, by observing the corresponding resistance change rate situation of change of mesh point, determines leakage scenarios, its
In, matrix K is：
As can be seen that by setting conductive grid below impervious barrier, and by measuring each conductive grid in energization
Electric signal, determines whether seepage occur at the corresponding mesh point in each loop, so that the leak detection processing to impervious barrier can be realized.
Fig. 4 is the structural representation that the embodiment of the present invention realizes monitor and detection device in the circuit of leak detection.The present invention
When embodiment is implemented, the monitor and detection device shown in above-mentioned Fig. 1 specifically may include each circuit module as shown in Figure 4, tool
Body, as shown in figure 4, above-mentioned monitor and detection device 20 specifically may include signal generating circuit 201, data acquisition circuit 202
And data processing circuit 203, wherein：
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.
When the present embodiment method is realized, can using Centralized Controller as data processing circuit 203, to realize centralized Control,
Specific control is simple, realizes the characteristics of facilitating, and in practical application, it is not limited to this, is as long as can accurately collect each time
Electric signal when road is powered.In the present embodiment, data acquisition circuit 202 is specially signal acquisition circuit, can there is electric current biography
Sensor etc. is constituted, and particular circuit configurations are not particularly limited, as long as the current signal on loop can be collected.
Fig. 5 is the electrical block diagram for a concrete application for realizing present invention method.As shown in figure 5, leading
In power grid 10, on each loop of any wire composition in any wire and the second wire group 102 in the first wire group 101
Gate-controlled switch is respectively arranged with, and the two ends of signal source are connected to by common wire's section, specifically, as shown in figure 5, first leads
Each wire is physically joined together at A ends in line group 101, and the other end is not attached to, likewise, in the second wire group 102
Each wire is physically joined together at B ends, and the other end is also not attached to, and side a and b is connected by wire C, i.e., each grid
The corresponding each loop of point has common wire's section C；And signal generating circuit 201 includes signal source 2011, and switch controller
2012 and multiple gate-controlled switch T by the control of switch controller 2012, wherein, signal source 2011 is connected in common wire's section C,
Gate-controlled switch T, each gate-controlled switch T are in series with respectively with switching control on each mesh point correspondence loop in conductive grid 10
Device 2012 is connected, and switch controller 2012 can be by controlling opening or closing for each gate-controlled switch T, respectively into conductive grid
The corresponding loop of each mesh point, which provides source signal, i.e. signal source 2011, has a voltage, when the gate-controlled switch T on primary Ioops is being opened
When being closed under the control of gateway controller 2012, a voltage will be provided for loop, now, it is possible to pass through data acquisition circuit 202
Gather the electric signal in the loop.
Wherein, described gate-controlled switch T is specifically as follows relay switch, can be specifically electromagnetic relay device, and
Switch controller 2012 can be powered to the relay switch on each loop respectively by predetermined period, to control the break-make in each loop,
With preferable switch control effect.The low-voltage control that the switch controller can be made up of controllers such as single-chip microcomputers
Circuit, cycle that can be according to setting or other control signals, to control the break-make of each controlled switch respectively.In Fig. 5, do not give
The connecting line gone out between gate-controlled switch T and switch controller, but in practical application, each gate-controlled switch T is and switch controller
Connection.
As shown in figure 5, described data acquisition circuit 202 is specific to may include signal acquisition circuit 2021 and analog-to-digital conversion electricity
Road 2022, wherein, signal acquisition circuit 2021 can be specifically current sensor or inductor, can in real time detect and flow through in loop
Current signal；Analog to digital conversion circuit 2022 is electrically connected with signal acquisition circuit 2021, and the current signal that can be gathered is real-time
Corresponding data signal is converted into, the A/D devices of 16 can be specifically used.So data processing circuit 203 just can be according to obtaining
The analog to digital conversion circuit taken is transmitted through the electric current come, it is determined that whether the impervious barrier at the mesh point on correspondence loop seepage occurs.Tool
When body is realized, the data acquisition circuit 202 may also include single-chip microcomputer and cache memory section etc., so that the signal to collection enters
Row processing and caching, are then again handled the data transfer of caching to data processing circuit 203.
In practical application, 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.
Fig. 6 is the electrical block diagram for another concrete application for realizing present invention method.As shown in fig. 6, with
Unlike circuit structure shown in above-mentioned Fig. 5, in the present embodiment, data processing circuit 203 can also be set with data acquisition circuit 202
Put and be may be provided in different positions, i.e. data processing circuit such as console, can be at a distance to collecting to obtain data progress
Focus on, specifically, as shown in fig. 6, the monitor and detection device 20 may also include data communication module 204, with data acquisition
Circuit 202 is connected, and for the electric signal for gathering data acquisition circuit, passes through communication link to data processing circuit 202.
The data communication module 204 can be by the cables such as wired internet/LAN and the data processing circuit of distant place
Communication interface is connected, and the current digital signal collected is sent into data processing circuit and handled；Or, the data communication
Module 204 can also be wireless communication module, such as mobile communication module, wirelessly to transmit current digital signal
To Value Data process circuit, now data processing circuit should also have corresponding wireless communication module to receive corresponding signal.
In practical application, the form used, medium are transmitted to signal and 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 detection method 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 (4)
1. a kind of seepage of seepage-proof layer detection method, the seepage of seepage-proof layer detection method detects circuit to antiseepage using seepage of seepage-proof layer
The leakage scenarios of layer are detected that the seepage of seepage-proof layer detection circuit includes conductive grid and provided with monitor and detection device, should
Monitor and detection device includes signal generating circuit, data acquisition circuit and data processing circuit, and the signal generating circuit includes
Signal source, switch controller and the gate-controlled switch controlled by the switch controller, the data acquisition circuit are adopted including signal
Collector and analog to digital conversion circuit, the monitor and detection device also include data communication module, the data communication module and institute
Data acquisition circuit connection is stated, the electric signal for the data acquisition circuit to be gathered passes through communication link to the number
According to process circuit, the monitor and detection device is also associated with warning device, when detecting seepage, is sent out by the warning device
Go out warning message,
The seepage of seepage-proof layer detection method is characterised by, including：
Conductive grid is laid below impervious barrier, wherein, the conductive grid includes the first wire group arranged by preset rules
With the second wire group, any wire in the first wire group is with any wires cross in the second wire group and with one
Two wire insulations at each mesh point formed at crosspoint, each wires cross in the conductive grid, each mesh point are set,
Be in series with the gate-controlled switch respectively on each mesh point correspondence loop in the conductive grid, each gate-controlled switch with
The switch controller connection, the switch controller can control each beating for the gate-controlled switch to open or close by predetermined period
Close, the corresponding loop of each mesh point into the conductive grid provides source signal respectively, and the source signal is opened using high frequency
The high-voltage signal that converter technique converts alternating current to high voltage direct current is closed, the data acquisition circuit is realized by termination power
It is electrically isolated with high-voltage signal source, to ensure the security of the data acquisition circuit；
First direction each wire arranged in parallel will be pressed in the first wire group as the wire of X-direction, number consecutively
For X1, X2 ..., Xn, using in the second wire group by each wire leading as Y-direction that second direction is arranged in parallel
Line, number consecutively Y1, Y2 ..., Ym, wherein, n and m are greater than 0 natural number；Each mesh point profit in the conductive grid
Represented with (Xi, Yj), wherein, 1≤i≤n, 1≤j≤m represent that the wire Xi of the i-th row in the first wire group is led with second
The crosspoint formed between the wire Yj of jth row in line group；
Each loop of any wire composition in any wire and the second wire group respectively into the first wire group is provided
Source signal, and effective electric signal in each loop is gathered respectively, it is specially：Successively provide source signal to mesh point (X1, Y1),
(X2, Y2) ..., (Xi, Yj) ..., (Xn, Ym) corresponding loop, providing the same of signal source to the corresponding loop of respective grid points
When, the current signal in measuring loop, analog-digital conversion circuit as described electrically connects with the signal acquisition circuit, the signal is adopted
The current signal of collector collection is converted into corresponding data signal in real time, the data acquisition circuit also include single-chip microcomputer and
Cache memory section, is handled and is cached with the signal to collection, then by the data transfer of caching to the data processing circuit
Handled；
Electric signal in each loop gathered based on different time, determines the impervious barrier of the infall of two wires in each loop
Whether there is seepage, be specially：
According to the current signal of detection and be the voltage of the source signal provided to the loop, the resistance in each loop is determined, by grid
The resistance value in the corresponding loop of point (Xi, Yj) is designated as Rijt1；
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>
<mo>...</mo>
</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>
<mo>...</mo>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mrow>
<mn>2</mn>
<mi>m</mi>
</mrow>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>...</mo>
</mtd>
<mtd>
<mo>...</mo>
</mtd>
<mtd>
<mo>...</mo>
</mtd>
<mtd>
<mo>...</mo>
</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>
<mo>...</mo>
</mtd>
<mtd>
<msub>
<mi>k</mi>
<mrow>
<mi>n</mi>
<mi>m</mi>
</mrow>
</msub>
</mtd>
</mtr>
</mtable>
</mfenced>
</mrow>
According to the matrix K, when the resistance change rate wherein occurred is more than given threshold, determine to ooze at corresponding mesh point
Leakage, and the corresponding mesh point of rate of change maximum is defined as to the mesh point closest to seepage；Or, according in certain a period of time
The corresponding resistance change rate of each mesh point that periodic measurement is obtained, feelings are changed by observing the corresponding resistance change rate of mesh point
Condition, determines the variation tendency of seepage.
2. seepage of seepage-proof layer detection method according to claim 1, it is characterised in that the conductive grid is specially rectangle
Any wire in grid, the first wire group is set with any wire square crossing in the second wire group, is intersected
Insulation processing is carried out at point.
3. seepage of seepage-proof layer detection method according to claim 1 or 2, it is characterised in that the distance between each mesh point
It is identical, or in the range of default value.
4. seepage of seepage-proof layer detection method according to claim 1, it is characterised in that the gate-controlled switch is opened for relay
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299600.2A CN104111151B (en) | 2014-06-27 | 2014-06-27 | Seepage of seepage-proof layer detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299600.2A CN104111151B (en) | 2014-06-27 | 2014-06-27 | Seepage of seepage-proof layer detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104111151A CN104111151A (en) | 2014-10-22 |
| CN104111151B true CN104111151B (en) | 2017-10-13 |
Family
ID=51708033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410299600.2A Active CN104111151B (en) | 2014-06-27 | 2014-06-27 | Seepage of seepage-proof layer detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104111151B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677565B (en) * | 2015-02-15 | 2017-09-05 | 中国科学院武汉岩土力学研究所 | A kind of damaged leakage detection method of landfill site seepage prevention layer |
| WO2016187318A1 (en) * | 2015-05-20 | 2016-11-24 | Saudi Arabian Oil Company | Sampling techniques to detect hydrocarbon seepage |
| CN105758590A (en) * | 2016-03-25 | 2016-07-13 | 神华集团有限责任公司 | Seepage monitoring system and method |
| CN109839432A (en) * | 2018-03-23 | 2019-06-04 | 中国环境科学研究院 | A kind of impervious barrier detection system and method based on magnetic field |
| CN109738138B (en) * | 2019-01-31 | 2020-11-24 | 河北工程大学 | Method and system for positioning HDPE (high-density polyethylene) film leakage position by utilizing traveling wave |
| AU2020376834B2 (en) | 2019-10-28 | 2023-02-02 | Enphase Energy, Inc. | Method and apparatus for tertiary control of microgrids with integrated over-current protection |
| CN111504581B (en) * | 2020-05-18 | 2022-07-05 | 中国环境科学研究院 | Landfill area leakage detection system and method |
| CN114111549A (en) * | 2021-11-30 | 2022-03-01 | 北京清航紫荆装备科技有限公司 | Membrane spacecraft and impact damage detection circuit and method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09243497A (en) * | 1996-03-05 | 1997-09-19 | Tsuruga Syst Kk | Apparatus for detecting water leak point |
| JP3438097B2 (en) * | 2001-04-12 | 2003-08-18 | 飛島建設株式会社 | Leak detection system for impermeable sheet |
| JP3463187B2 (en) * | 1997-06-05 | 2003-11-05 | 坂田電機株式会社 | Water leak location detection method |
| CN103528767A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Water leakage position detection device for large area |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09280992A (en) * | 1996-04-17 | 1997-10-31 | Sakata Denki Kk | Detecting system for leakage occurrence position |
| JP3622172B2 (en) * | 1998-03-05 | 2005-02-23 | 株式会社レイディック | Water leak occurrence position detection method |
| JP3259912B2 (en) * | 1999-07-06 | 2002-02-25 | 鹿島建設株式会社 | Leakage location detector for waste disposal sites |
| JP2001099742A (en) * | 1999-09-29 | 2001-04-13 | Maeda Corp | Water leakage detection system and method thereof |
| JP2007178252A (en) * | 2005-12-28 | 2007-07-12 | Shimizu Corp | Water leakage outbreak position-detecting device |
| CN102183343A (en) * | 2011-03-18 | 2011-09-14 | 华侨大学 | Device for detecting leachate leakage and leakage position in refuse landfill |
-
2014
- 2014-06-27 CN CN201410299600.2A patent/CN104111151B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09243497A (en) * | 1996-03-05 | 1997-09-19 | Tsuruga Syst Kk | Apparatus for detecting water leak point |
| JP3463187B2 (en) * | 1997-06-05 | 2003-11-05 | 坂田電機株式会社 | Water leak location detection method |
| JP3438097B2 (en) * | 2001-04-12 | 2003-08-18 | 飛島建設株式会社 | Leak detection system for impermeable sheet |
| CN103528767A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Water leakage position detection device for large area |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104111151A (en) | 2014-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104111152B (en) | Seepage of seepage-proof layer detecting system | |
| CN104111151B (en) | Seepage of seepage-proof layer detection method | |
| CN107389531A (en) | Monitoring of leakage system for geomembrane | |
| CN204064593U (en) | Seepage of seepage-proof layer detection system | |
| CN101464488B (en) | On-line monitoring system for high voltage cable | |
| CN105571644B (en) | A kind of insulator metallic dust filth on-Line Monitor Device and its monitoring method | |
| CN104110043B (en) | Antiseepage Rotating fields | |
| CN111504581B (en) | Landfill area leakage detection system and method | |
| CN102809568A (en) | Method and system for monitoring contamination distribution of insulator | |
| CN103727983B (en) | A kind of wireless hydrologic monitoring device of nuclear power plant | |
| CN205263227U (en) | Leakage detection equipment | |
| AU2015282458B2 (en) | A sensor and system for monitoring integrity of a waterproofing system or membrane | |
| CN102147315A (en) | Leachate seepage monitoring device for sanitary refuse landfill | |
| CN204059422U (en) | Impervious barrier | |
| CN104849620A (en) | Grounding grid fault diagnosis method based on BP neural network | |
| CN104110044B (en) | Antiseepage Rotating fields laying method | |
| CN106707066B (en) | Standard true type grounding test device | |
| CN203159712U (en) | Substation grounding grid anti-corrosion and monitoring device based on modular design | |
| CN114878092B (en) | Leakage monitoring device and monitoring method | |
| CN106788251A (en) | A kind of peasant household house roof photovoltaic power station detecting system and detection method | |
| CN110361578A (en) | The uniline of meter and soil layering is shorted shaft tower personal safety assessment system and method | |
| CN214040529U (en) | Landfill seepage monitoring devices | |
| CN201965002U (en) | Device for monitoring leachate seepage of refuse sanitary landfill | |
| CN103149477B (en) | Grounding grid defect diagnosis method and system utilizing square wave excitation source | |
| CN203350429U (en) | On-line real-time error monitoring system for alternating current sampling measurement apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |