CN108759769B - Underwater geomembrane monitoring method adopting pentagonal monitoring disc - Google Patents
Underwater geomembrane monitoring method adopting pentagonal monitoring disc Download PDFInfo
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- CN108759769B CN108759769B CN201810631954.0A CN201810631954A CN108759769B CN 108759769 B CN108759769 B CN 108759769B CN 201810631954 A CN201810631954 A CN 201810631954A CN 108759769 B CN108759769 B CN 108759769B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N2033/0096—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 testing material properties on thin layers or coatings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses an underwater geomembrane monitoring method adopting pentagonal monitoring discs, which comprises the following steps: at least three rows of monitoring nodes are arranged in a reservoir bottom or a canal bottom water area to form a monitoring node array, stress strain detection devices of the first monitoring nodes and the last monitoring nodes in even rows comprise pentagon monitoring panels and pentagon covers matched with the pentagon monitoring panels, ropes are connected between the stress strain detection devices of the monitoring nodes in each row, and the method comprises the following steps: the stress-strain monitoring devices of the monitoring nodes in each row are connected with the control buses of the row, and the control buses of each row are electrically connected with the control boxes arranged on the dykes; step three: the control center preliminarily determines the position coordinates of the monitoring nodes which send out signals first or have large signal peaks as the coordinates of deformation or damage positions of the geomembrane. The technical scheme of the invention satisfies the collection of multi-directional signals and is more beneficial to the monitoring of hidden danger of leakage at the bottom of a warehouse or a canal.
Description
Technical Field
The invention relates to an underwater geomembrane monitoring method adopting a pentagonal monitoring disc.
Background
The geomembrane is used as a high molecular polymer, has high tensile strength and high elongation, bears water pressure and adapts to deformation of a dam body, and is widely applied to hydraulic engineering due to water impermeability so as to isolate leakage channels of water flow. In the early stage of China, the geomembrane is used for vertical plastic-paving seepage-proofing engineering of a base or a canal base, and is widely applied to water conservancy engineering such as plain reservoirs in recent years; in the engineering of plain reservoir, face rockfill dam, canal and cofferdam, it is an effective technique to adopt geomembrane for seepage prevention.
In general, if a plurality of monitoring nodes are laid under a geomembrane to obtain state data of a reservoir bottom or a canal bottom, control is often needed one by one, so that a control system is complicated, if a network structure is adopted, data transmission is needed by adopting a bus structure, once a certain monitoring node is damaged and cannot work normally, a gap exists in collected data, an island of the monitoring node exists, the integrity of the reservoir bottom or the canal bottom and the geomembrane can not be completely guaranteed, if ropes are adopted to link the monitoring nodes to form a monitoring node array, but in the monitoring node array, the monitoring node structures at different positions are different, some monitoring nodes at the edge of the array are often only needed to be linked with one side by ropes, and if some monitoring nodes are in the center of the array, the monitoring nodes with various structures are needed to be used for selection.
At present, in urban construction and partial hydraulic engineering, the adoption of geomembranes for seepage prevention in areas with poor geological conditions and lacking ideal impermeable layers becomes a preferred scheme. The geomembrane belongs to a flexible material, has strong adaptability to deformation of an underwater foundation, and can meet the economic life requirements of most hydraulic engineering at the aging speed under the condition of not being pierced and torn by external force, and is particularly suitable for being used as a reservoir bottom seepage prevention scheme in areas with multiple earthquakes and karst areas.
In practical application, the integrity of the geomembrane can face the test of deformation of the underwater foundation, and the deformation of the underwater foundation generally has two types, namely, the submerged foundation is in a collapse state, so that the geomembrane is partially suspended, the tensile strength and the shear strength of the membrane body are lower, and the submerged foundation is raised and the local stress, the displacement and the like of the geomembrane are caused by gas expansion. In short, once the underwater reservoir bottom geomembrane is damaged under the actions of geological environment, water and soil organisms, external force of a liner, flatulence and the like, the important defect that the cracking position is difficult to determine is immediately displayed. Because the seepage water rapidly diffuses in the soil body after passing through the geomembrane, even the embedded monitoring instrument can not determine the damaged part in a small range. The defect causes the short rush repair time to be lost in the initial stage of the membrane body cracking, leads the rupture and the permeation damage of the geomembrane to be rapidly expanded, and seriously threatens the safety of hydraulic engineering.
In a word, once the geomembrane is damaged, the leakage of reservoir water is aggravated, a large amount of water is lost, normal operation of the reservoir is influenced, and engineering safety is endangered. Therefore, effective monitoring techniques must be employed for geomembrane operation.
Disclosure of Invention
The technical problems solved by the invention are as follows: the technical problem of how to quickly find and accurately position the underwater anti-seepage geomembrane after accidental breakage is solved.
In order to achieve the above purpose, the invention provides an underwater geomembrane monitoring method adopting a pentagonal monitoring disc, which comprises the following steps:
setting at least three rows of monitoring nodes in a reservoir bottom or a canal bottom water area to form an odd-numbered row or an even-numbered row of monitoring node array, wherein each even-numbered row of monitoring nodes is respectively arranged between every two adjacent monitoring node interval areas of the odd-numbered row, each monitoring node comprises a stress-strain monitoring device, each stress-strain monitoring device of each even-numbered row comprises a pentagon monitoring disc and a pentagon cover matched with the pentagon monitoring disc, ropes are connected between the stress-strain monitoring devices of the monitoring nodes in each row, the stress-strain monitoring devices of the adjacent monitoring nodes of the adjacent rows are connected through the ropes to form triangular meshes, wherein the stress-strain monitoring devices of the first monitoring node of the adjacent odd-numbered row are also connected with the ropes, and the stress-strain monitoring devices of the tail end monitoring nodes of the adjacent odd-numbered row are also connected through the ropes;
Step two, keeping tension among ropes in the monitoring node array, fixedly mounting a stress strain detection device arranged on each monitoring node on one downward surface of a geomembrane, laying the geomembrane together with the stress strain detection device of the monitoring node on the downward surface on the surface of an underwater reservoir bottom or channel bottom, wherein the stress strain detection devices in the monitoring nodes in each row are connected with control buses of the row, and the control buses of the rows are electrically connected with control boxes arranged on a dyke;
thirdly, when any geomembrane deforms, stress-strain monitoring devices in monitoring nodes at corresponding positions on the back of the geomembrane firstly sense stress and send out data signals, meanwhile, ropes connected with the stress-strain monitoring devices are involved, the stress-strain monitoring devices in peripheral monitoring nodes sense deformation of the geomembrane and send out data signals, each data signal is transmitted to a control box through a control bus where the data signals are located, a controller in the control box uploads each data signal to a cloud server, an internal program of a central server of the control center performs time sequencing on the sent signals and compares the signals with a threshold lower limit of stress peaks born by the geomembrane, stress peak signals smaller than the threshold lower limit are discarded, stress peak signals larger than the threshold lower limit are recorded, the threshold lower limit is set to 80-140N/125 PX, N units are newtons, and PX is a pixel;
Taking the coordinate of the monitoring node where the stress-strain monitoring device with the maximum signal peak value or the first signal is located as the position coordinate of the deformation or damage position of the geomembrane; and a technician learning the coordinate signal checks the corresponding monitoring node and the surrounding area thereof, so that the deformation or damage position of the geomembrane can be obtained relatively accurately, and technical support is provided for further emergency treatment.
In addition, the embodiment according to the invention can have the following additional technical features:
according to one embodiment of the invention, five sides of the pentagon monitoring disc comprise an upper straight side and a lower straight side which are parallel to each other, a left straight side which is perpendicular to the upper straight side and the lower straight side respectively, a right side comprises an upper section side and a lower section side, one end of the upper section side is connected with the right end part of the upper straight side, one end of the lower section side is connected with the right end part of the lower straight side, the other ends of the upper section side and the lower section side are mutually connected, the connection intersection point of the upper section side and the lower section side is far away from the left straight side of the pentagon monitoring disc to form an outer protrusion, a line collecting table is arranged in the middle part in the pentagon monitoring disc, a wiring plug is arranged on the line collecting table, the edges near the upper side and the lower side of the line concentration table are respectively provided with a pair of bolt holes, the two pairs of bolt holes are symmetrical about the center of the line concentration table, the edge near the right side of the line concentration table in the pentagon-shaped monitoring disc is provided with one bolt hole, wherein the radial center of the bolt hole at the edge on the right side of the line concentration table is opposite to a vertex angle formed by the connection intersection point of the upper section edge and the lower section edge and is positioned on an extension line of an angle bisector of the vertex angle, the radial centers of the pair of bolt holes respectively arranged on the upper side and the lower side edge of the line concentration table are positioned on a diagonal line of the mutual cross connection of the two pairs of vertex angles at the two ends of the upper straight edge and the lower straight edge of the pentagon-shaped monitoring disc,
One end of five connection pieces is fastened on the line concentration table through the cooperation of bolt and bolt hole respectively, and the other end of five connection pieces is respectively independent to be connected with stress strain sensor respectively, is kept away from at every stress strain sensor the other end of connection piece is equipped with the fastening hole, and the clamp plate is through the cooperation of bolt and fastening hole with the one end crimping of rope in stress strain sensor keep away from on the other end of connection piece, be equipped with waterproof stopper on the lateral wall of pentagon monitoring dish, five the rope is worn out the lateral wall through waterproof stopper and is connected with other adjacent monitoring nodes, five stress strain sensor's signal line passes through respectively the wiring stopper is connected with the control bus electricity in the line.
In addition, the first stress-strain detection device of the monitoring nodes in the odd-numbered rows comprises a sector-shaped monitoring disc, the sector-shaped monitoring disc is matched with a sector-shaped cover, a turning edge is arranged on the outer side of two straight edges of the sector-shaped cover, a mounting hole is formed in the turning edge, a line concentration table is arranged at the position, opposite to one side, of the arc edge in the sector-shaped monitoring disc, a wiring plug is arranged on the line concentration table, three bolt holes are formed in the edge of a table top, close to one side of the arc edge of the sector-shaped monitoring disc, of the line concentration table, one ends of the three connecting pieces are respectively fastened on the line concentration table through the matching of bolts and the three bolt holes, stress-strain sensors are respectively connected with the other ends of the three connecting pieces, the other ends of each stress-strain sensor are also provided with bolt holes, one end of a rope is in compression joint connection with the stress-strain sensors through the matching of the bolts and the bolt holes, the side wall of the sector-shaped monitoring disc is provided with a waterproof plug, the rope penetrates out of the sector-shaped monitoring disc to be connected with other adjacent nodes through the waterproof plugs, and the stress-strain sensors are respectively connected with the bus through the waterproof plug.
The system adopted by the underwater geomembrane monitoring method comprises at least three rows of monitoring nodes arranged in a water area in a reservoir bottom or a canal bottom to form an odd-numbered row or an even-numbered row of monitoring node array, wherein each monitoring node of the even-numbered row is respectively arranged between every two adjacent monitoring node interval areas of the odd-numbered row, each monitoring node comprises a stress-strain monitoring device, a rope is connected between the stress-strain monitoring devices in the monitoring nodes in each row, the stress-strain monitoring devices in the adjacent monitoring nodes in the adjacent rows are connected through the rope to form triangular meshes, wherein the stress-strain monitoring devices in the first monitoring node in the adjacent odd-numbered row are also connected with the rope, and the stress-strain monitoring devices in the end monitoring nodes in the adjacent odd-numbered row are also connected through the rope; the stress-strain monitoring device comprises a stress-strain sensor;
the method comprises the steps that tension is kept among ropes in a monitoring node array, monitoring nodes are fixedly arranged on the downward side of a geomembrane, the geomembrane and the monitoring nodes on the downward side are laid on the surface of an underwater reservoir bottom or a canal bottom, stress-strain monitoring devices of the monitoring nodes in each row are connected with control buses of the row, and the control buses of each row are electrically connected with a control box arranged on a dyke; the control box is communicated with a cloud server, the cloud server is communicated with a central server of a control center through a gateway, and the cloud server is also communicated with the mobile terminal.
The control box comprises a controller and a wireless transmitting module connected with the controller, and the wireless transmitting module is communicated with the cloud server through a wireless router. The controller is a PLC controller, and the rope is a stainless steel wire rope.
In the concrete application of adopting a laid geomembrane to perform seepage prevention treatment on an underwater project, aiming at the actual situation that the membrane body of the geomembrane is easily damaged under the actions of foundation change, external force and the like, accidents such as leakage of the bottom of a reservoir or the bottom of a canal are caused when the membrane body is serious, a plurality of monitoring nodes are installed on the downward side of the geomembrane, adjacent monitoring nodes are connected through ropes to form a mesh network structure, when the underwater geomembrane is deformed or even damaged in the initial stage, the stress strain monitoring device of the nearest monitoring node is pulled by a corresponding rope passing through a deformation area to generate a warning signal, and other ropes connected with the stress strain monitoring device are pulled by the corresponding rope, so that the peripheral stress strain monitoring device can sense the deformation signal of the geomembrane; here, the rope of setting up still plays the effect of strengthening rib when participating in constructing monitoring node array mesh and playing stress signal linkage effect, can strengthen the geomembrane tensile ability under water, and the phase change improves the geomembrane and resists external force and avoid damaged ability to realize the best stress monitoring mode: the geomembrane is a good effect that the geomembrane is never or rarely stressed. The method has the disadvantages that when the underwater geomembrane is deformed or damaged under stress at the initial stage, the possible obtained stress data signal value is smaller due to the ropes, the problem of reduced monitoring sensitivity due to the ropes can be solved by reducing the lower limit of the threshold value of the monitoring signal in the program of a later control center server, the stress tensile strength of the geomembrane is more than or equal to 250N/125px under the normal condition, the lower limit of the threshold value is set to 80-140N/125 px, the threshold value is artificially reduced, and the sensitivity of receiving the stress signal of the geomembrane is improved under the condition that the existing equipment is not increased. Thereby ensuring that the early stage of stress deformation and even damage of the geomembrane can be responded in time.
When a foundation under the underwater geomembrane is raised or gas is accumulated, the geomembrane is deformed and even broken under the action of heavy water pressure and other external forces, the nearest stress-strain detection device at the position senses deformation signals, meanwhile, ropes connected with the stress-strain detection device are also involved, peripheral stress-strain detection devices can sense deformation signals of the geomembrane more or less, the signals are connected with controllers in a control box through control buses of the respective rows, the controllers are uploaded to a cloud server until the server of the control center, internal programs of the center server judge and compare, the geomembrane deformation signals reaching the maximum peak value at first are calculated as fault point coordinate values, and related decision-making department personnel can check the monitoring nodes and surrounding areas thereof, so that the relative accurate geomembrane breakage positions can be obtained, time is provided for timely processing, and the needs of related departments are met.
Related decision-making staff can also directly access the cloud server through the mobile terminal to master the deformation state information of the underwater geomembrane in real time, so that the pre-judgment can be performed in the first time, the precious first-aid repair time at the initial stage of membrane body cracking is obtained, the risk of wind is reduced to the minimum, the expansion of accidents is prevented,
The stress strain detection device for the leakage points is characterized in that the stress strain detection device comprises a pentagon monitoring disc and a pentagon cover matched with the pentagon monitoring disc, so that the acquisition of multidirectional signals is realized, the monitoring of hidden danger of leakage at the bottom of a warehouse or at the bottom of a canal is facilitated, the investment of manpower and material resources is greatly reduced, and the stress strain detection device has great economic benefits and application prospects.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will be apparent and readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings,
FIG. 1 is a schematic flow diagram of an underwater geomembrane monitoring method employing pentagonal monitoring panels;
FIG. 2 is a schematic diagram of a sector-shaped monitor plate structure of a first of the monitor nodes in an odd row of the monitor node array;
FIG. 3 is a schematic side view of the fan-shaped monitor disk of FIG. 2;
FIG. 4 is a schematic illustration of a square monitor disk configuration of middle monitor nodes in the top row or in the interior of non-rows of monitor nodes in the monitor node array;
FIG. 5 is a schematic side view of the square monitor disk structure of FIG. 4;
FIG. 6 is a schematic diagram of a pentagonal monitor panel with the first and last monitor nodes in even rows of the array of monitor nodes;
FIG. 7 is a schematic side view of the pentagonal monitor panel of FIG. 6;
FIG. 8 is a schematic diagram of a regular hexagonal monitor disk of intermediate monitor nodes in an array of monitor nodes except for the first row and the non-row and except for the first and last monitor nodes in the row;
FIG. 9 is a schematic side view of the regular hexagonal monitor disk of FIG. 8;
FIG. 10 is a schematic side view of the regular hexagonal monitor panel of FIG. 8 with ground anchors;
FIG. 11 is a schematic illustration of an underwater geomembrane stress-strain monitoring system;
FIG. 12 is a schematic view of a partial enlarged construction of a wiring plug;
FIG. 13 is a schematic view of a rope restraining device;
FIG. 14 is a schematic view of the ratchet and cable engagement of FIG. 13;
the system comprises a water reservoir bottom or canal bottom, 2, a monitoring node, 3, a rope, 4, a control bus, 5, a wireless router, 6, a cloud server, 7, a mobile terminal, 8, a center server, 9, a gateway, 10, a control box, 11, a geomembrane, 12, a fan-shaped monitoring disc, 13, a turnover edge, 14, a stress strain sensor, 15, a waterproof plug, 16, a bolt, 17, a pressing plate, 18, a wire collecting table, 19, a wiring plug, 21, a fan-shaped cover, 22, a square monitoring disc, 23, a square cover, 24, a pentagonal monitoring disc, 25, a pentagonal cover, 26, a signal wire, 27, an air bag, 28, a protruding column, 29, a communicating tube, 30, an upper mounting seat, 31, a ratchet wheel, 32, a lower mounting seat, 33, a radial notch, 34, a conical body, 35, a transverse torsion bar, 36, a ratchet spindle, 37, a lower groove, 38, an upper groove tube, 39, a side wall hollow hole, 40, a regular hexagon cover, 41 and 42.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. Further description is provided below with reference to the accompanying drawings;
the monitoring method and system can be applied to a water reservoir bottom or a canal bottom 1, and in the stress monitoring of a geomembrane 11 laid in the reservoir bottom or the canal bottom of a canal, a method for monitoring an underwater geomembrane by adopting a pentagonal monitoring disc is provided in fig. 1 to 14, and comprises the following steps:
the method comprises the steps that at least three rows of monitoring nodes 2 are arranged in a reservoir bottom or a canal bottom water area to form a monitoring node array of an odd number row or an even number row, wherein each monitoring node 2 of the even number row is respectively arranged between every two adjacent monitoring node 2 interval areas of the odd number row, each monitoring node 2 comprises a stress-strain detection device, each stress-strain detection device of each monitoring node 2 comprises a pentagon monitoring disc and a pentagon cover matched with the pentagon monitoring disc, a rope 3 is connected between the stress-strain detection devices of the monitoring nodes 2 in each row, the stress-strain detection devices of the adjacent monitoring nodes 2 in the adjacent rows are connected through the rope 3 to form a triangular mesh, the stress-strain detection devices of the first monitoring node 2 in the adjacent odd number row are also connected with the rope 3, and the stress-strain detection devices of the end monitoring nodes 2 in the adjacent odd number row are also connected through the rope 3;
The second step comprises the steps of keeping tension among ropes 3 in a monitoring node array, fixedly installing stress-strain detection devices arranged on all monitoring nodes 2 on one downward surface of a geomembrane 11, laying the geomembrane 11 together with the stress-strain detection devices arranged on the monitoring nodes 2 on the next downward surface on the bottom surface of a reservoir or the bottom surface of a canal, wherein the stress-strain detection devices of the monitoring nodes 2 in all rows are connected with control buses 4 of the row, and the control buses 4 of all rows are electrically connected with control boxes 10 arranged on a dam;
step three, when any one of the geomembranes 11 deforms, stress-strain detection devices in the monitoring nodes 2 positioned at corresponding positions on the back of the geomembranes 11 are subjected to stress to send out data signals, meanwhile, ropes 3 connected with the stress-strain detection devices are also involved, so that peripheral stress-strain detection devices can sense the deformation of the geomembranes 11 to send out data signals, each data signal can be transmitted to a control box 10 through a control bus 4 where the data signal is located, a controller in the control box 10 uploads each data signal to a cloud server 6, an internal program of a central server 8 of the control center judges and compares the data signals, the data signals are sent out in time sequence, the data signals are compared with a threshold lower limit of stress peaks born by the geomembranes, stress peak signals smaller than the threshold lower limit are abandoned, stress peak signals larger than the threshold lower limit are recorded, the threshold lower limit can be set to be 80 or 100 or 140N/125PX, N is N, and PX is a pixel of the geomembrane; the position coordinates of the monitoring node 2 which sends out the data signal firstly or has the maximum data signal peak value are preliminarily determined as the position coordinates of deformation or damage of the geomembrane 11, and technicians which acquire the coordinate signals can check the corresponding monitoring node 2 and surrounding areas thereof, so that the relative accurate deformation or damage position of the geomembrane 11 can be obtained, and technical support is provided for further emergency treatment.
In the monitoring node array, as shown at C in fig. 11, as shown in fig. 6 and 7, the stress-strain detecting device of the first and the last monitoring nodes in even number rows comprises a pentagon-shaped monitoring disc 24 and a pentagon-shaped cover 25 matched with the pentagon-shaped monitoring disc 24, facing the pentagon-shaped monitoring disc 24, two mutually parallel upper and lower end edges are respectively positioned at the upper and lower sides of the pentagon-shaped cover 25 in the horizontal direction, the outer sides of the upper and lower end edges are respectively provided with a turnup edge 13, a mounting hole is arranged on the turnup edge 13, the five edges of the pentagon-shaped monitoring disc 24 comprise an upper straight edge and a lower straight edge which are mutually parallel, a left straight edge which is respectively perpendicular to the upper and lower straight edges, a right side edge comprises an upper section edge and a lower section edge, one end of the upper section edge is connected with the right end of the upper straight edge, one end of the lower section edge is connected with the right end of the lower straight edge, the other ends of the upper section edge and the lower section edge are connected with each other, the connection intersection point of the upper section edge and the lower section edge is far away from the left straight edge of the pentagon monitoring disc 24 to form an outer protrusion, an included angle larger than zero and smaller than 180 degrees exists between the upper section edge and the lower section edge, a line concentration table 19 is arranged in the middle of the pentagon monitoring disc 24, a wiring plug 20 is arranged on the line concentration table 19, a pair of bolt holes are respectively arranged at the edges close to the upper side and the lower side of the line concentration table 19, the two pairs of bolt holes are symmetrical relative to the line concentration table 19, and one bolt hole is arranged at the edge close to the right side of the line concentration table in the pentagon monitoring disc, so that the pentagon monitoring disc can be used by turning 180 degrees for meeting the direction requirement of the pentagon monitoring disc of the first monitoring node and the last monitoring node in even number rows; the radial center of the bolt hole at the right edge of the line concentration table is opposite to the vertex angle formed by the connection intersection point of the upper segment edge and the lower segment edge and is positioned on the extension line of the angular bisector of the vertex angle, and the radial centers of a pair of bolt holes respectively arranged at the upper side and the lower side edge of the line concentration table 19 are positioned on the diagonal line of the mutual cross connection of two pairs of vertex angles where the two ends of the upper straight edge and the lower straight edge of the pentagon monitoring disc 24 are positioned. The radial centers of the bolt holes are positioned on the crossed diagonal lines, so that ropes connected to the stress-strain sensor 14 can conveniently penetrate out along the vertex angles without bending. The sensitivity of the sensor to stress sensing is improved. 5. The side shape lid includes in the horizontal direction, and two upper end limit and the lower extreme limit that are parallel to each other are located respectively pentagonal lid's upside and downside, and the outside of upper end limit and lower extreme limit is provided with respectively turns over the edge turn over and be equipped with the mounting hole on the edge.
One end of five connection pieces 18 is fastened on a line concentration table 19 through the cooperation of bolts 16 and bolt holes respectively, the other end of five connection pieces 18 is respectively and independently connected with stress strain sensors 14, the other end of each stress strain sensor 14 far away from the connection piece 18 is provided with a fastening hole, a pressing plate 17 presses one end of a rope onto the other end of the stress strain sensor 14 far away from the connection piece 18 through the cooperation of the bolts 16 and the fastening holes, a waterproof plug 15 is arranged on the side wall of a pentagon monitoring disc 24, five ropes penetrate out of the side wall through the waterproof plug 15 and are connected with other adjacent monitoring nodes, and signal lines 26 of the five stress strain sensors 14 are respectively and electrically connected with a control bus 4 in the line through the wiring plug 20.
In addition, as shown in fig. 11B, in the monitoring node array, as shown in fig. 4 and 5, a square cover 23 is matched on the square monitoring disc 22, a turning edge 13 is arranged on the outer side of an upper straight edge and a lower straight edge between the left side and the right side of the square cover 23, a mounting hole is arranged on the turning edge 13, the turning edge 13 faces the square monitoring disc 22, a line collecting table 19 is arranged at the straight edge position on the symmetrical central axis of the left side and the right side of the square monitoring disc 22 and close to the upper side, a wiring plug 20 is arranged on the line collecting table 19, two pairs of bolt holes taking the symmetrical central axes of the left side and the right side in the square monitoring disc 22 as symmetrical axes are arranged on the line collecting table 19, one end of each pair of connecting sheets 18 is respectively matched with the two pairs of bolt holes through bolts 16 and fastened on the line collecting table 19, the other end of each connecting sheet 18 is respectively and independently connected with two corresponding stress strain sensors 14, the line of the axial axes of the two pairs of stress strain sensors 14 is collinear, the line connecting plug 20 is arranged on the side of the square monitoring disc 22, the other end of the two connecting sheets is far from the other end of the square monitoring disc 14 through the two connecting sheets 3, the other end of the two connecting sheets are respectively connected with the two adjacent bolt holes 15 through the two parallel to the two connecting sheets 15, the two stress sensors 14, the two side of the two adjacent stress sensors are respectively arranged on the two side of the monitoring discs, and the two side edges are far from the side of the monitoring disc 2, and far from the side, the signal lines 26 of the stress-strain sensors 14 are electrically connected to the control bus 4 in the row via the connection plugs 20.
As shown at a in fig. 11, the stress-strain detecting device of the first monitoring node 2 in the odd-numbered row includes a fan-shaped monitoring disc 12, as shown in fig. 2 and 3, the fan-shaped monitoring disc 12 is matched with a fan-shaped cover 21, a turning edge 13 is arranged on the outer side of two straight edges of the fan-shaped cover 21, and a mounting hole is arranged on the turning edge 13, so that the fan-shaped monitoring disc 12 can be connected on the downward side of the geomembrane 11, namely the back side of the geomembrane 11, by sewing or riveting, by using the mounting hole on the turning edge 13. The wire collecting table 19 is arranged at the position, opposite to one side, of the arc edge in the fan-shaped monitoring disc 12, the wire collecting table 19 is provided with a wiring plug 20, three bolt holes are formed in the edge of the table surface, close to one side of the arc edge of the fan-shaped monitoring disc 12, of the wire collecting table 19, one ends of the three connecting pieces 18 are respectively fastened to the wire collecting table 19 through the matching of bolts 16 and the three bolt holes, the other ends of the three connecting pieces 18 are respectively connected with stress strain sensors 14, the other end, far away from the connecting pieces 18, of each stress strain sensor 14 is also provided with a bolt hole, one end of a rope 3 is in pressure connection with the other end, far away from the connecting pieces 18, of the stress strain sensor 14 through the matching of the bolts 16 and the bolt holes, a waterproof plug 15 is arranged on the side wall of the fan-shaped monitoring disc 12, the rope 3 penetrates out of the fan-shaped monitoring disc 12 through the waterproof plug 15 to be connected with stress strain detection devices in other adjacent monitoring nodes 2, and signal wires 26 of the stress strain sensors 14 are respectively electrically connected with the control buses 4 in the row through the wiring plug 20.
In fig. 11, an underwater geomembrane monitoring system is shown, which comprises at least three rows of monitoring nodes 2 arranged in a water area in a water bottom or a canal bottom 1 to form an odd-numbered row or an even-numbered row of monitoring node array, wherein each monitoring node 2 in the even-numbered row is respectively arranged between every two adjacent monitoring node 2 interval areas in the odd-numbered row, each monitoring node 2 comprises a stress-strain detection device, a rope 3 is connected between the stress-strain detection devices in the monitoring nodes 2 in each row, the stress-strain detection devices in the adjacent monitoring nodes 2 in the adjacent rows are connected through the rope 3 to form a triangular mesh, the stress-strain detection devices in the first monitoring node 2 in the adjacent odd-numbered row are also connected with the rope 3, and the stress-strain detection devices of the end monitoring nodes 2 in the adjacent odd-numbered rows are also connected through the rope 3;
the ropes 3 in the monitoring node array are kept tensioned, the monitoring nodes 2 are fixedly arranged on the downward side of the geomembrane 11, the geomembrane 11 and the monitoring nodes 2 on the downward side are laid on the surface of the underwater reservoir bottom or canal bottom 1, the stress-strain detection devices of the monitoring nodes 2 in each row are connected with the control buses 4 of the row, and the control buses 4 of each row are electrically connected with the control boxes 10 arranged on the dykes; the control box 10 is in communication with the cloud server 6, the cloud server 6 is in communication with the central server 8 of the control center through the gateway 9, and the cloud server 6 is also in communication with the mobile terminal 7.
The control box 10 comprises a controller and a wireless transmitting module connected with the controller, and the wireless transmitting module is communicated with the cloud server 6 through the wireless router 5.
The controller is a PLC controller, and the rope 3 is a stainless steel wire rope.
The PLC controller is installed in the control box 10, and is electrically connected to peripheral electrical accessories such as a power source, a start switch, an indicator light, etc., which are conventional to those skilled in the art, and thus will not be described again.
Finally, as shown at D in FIG. 11, in the monitoring node array, as shown in FIGS. 8 and 9, except for the first row and the non-row, and the middle monitoring node of the first and the last monitoring nodes in the row comprises a regular hexagonal monitoring disc 40 and a regular hexagonal cover 41 matched with the regular hexagonal monitoring disc 40, facing the regular hexagonal monitoring disc 40, in the horizontal direction, two straight sides parallel to each other are respectively positioned at the upper side and the lower side of the regular hexagonal cover 41, the outer sides of the two straight sides are respectively provided with a turning edge 13, a mounting hole is arranged on the turning edge 13, six vertex angles of the regular hexagonal monitoring disc 40 are three pairs of symmetrical vertex angles symmetrical about the symmetry center in the disc, a wire collecting table 19 is arranged at the symmetry center in the regular hexagonal monitoring disc 40, a wire plug 20 is arranged on the wire collecting table 19, six wire holes are respectively arranged at the edges near the upper side and the lower side and the left side and the right side of the wire collecting table 19, the six wire holes form three pairs of symmetrical vertex holes about the symmetry center in the disc, the three pairs of the wire collecting table 19 are respectively positioned on the opposite radial projection of the three pairs of the wire collecting table 19 between the three pairs of the monitoring tables on the opposite radial projection of the vertex angles of the regular hexagonal monitoring disc 40,
One end of each of the six connecting pieces 18 is fastened on the line concentration table 19 through the cooperation of the bolts 16 and the bolt holes, the other ends of the six connecting pieces 18 are respectively and independently connected with the stress strain sensors 14, the other end, far away from the connecting pieces 18, of each stress strain sensor 14 is provided with a fastening hole, one end of a rope is pressed and connected with the other end, far away from the connecting pieces 18, of the stress strain sensor 14 through the cooperation of the bolts 16 and the fastening holes by the pressing plate 17, the side wall of the regular hexagon monitoring disc 40 is provided with a waterproof plug 15, six ropes penetrate out of the side wall through the waterproof plug 15 and are connected with other adjacent monitoring nodes, and the signal lines 26 of the six stress strain sensors 14 are respectively and electrically connected with the control bus 4 in the line through the wiring plugs 20.
As shown in fig. 10, the regular-hexagon monitoring discs may also be provided with a fixed anchor 42, because the regular-hexagon monitoring discs are often arranged in the middle area of the whole geomembrane 11, the displacement is small compared with the edge area of the geomembrane 11, so that the fixed anchor 42 can be used for relatively keeping the position, the fixed anchor 42 can be grasped in the mud of the water bottom, so that each regular-hexagon monitoring disc is relatively fixed in the water bottom, that is, a plurality of origin coordinates are artificially established, when the geomembrane 11 is damaged or deformed, the stress-strain sensor 14 in the node is applied with a force by the rope, the central server 8 directly obtains the relative coordinates of the origin of the fixed regular-hexagon monitoring discs according to the transmitted data signals and takes the relative coordinates as a reference point, and compared with the process of traversing the whole water bottom area to find the damage or deformation position, the damage or deformation position of the geomembrane 11 can be obtained more rapidly with fewer program operations.
In fig. 12, there is provided a patch plug 20, the patch plug 20 is respectively disposed at a line concentration table 19 in a tray body of a sector-shaped monitoring tray 12, a square-shaped monitoring tray 22, a pentagonal monitoring tray 24 and a regular hexagonal monitoring tray 40, the patch plug 20 includes a hollow tube penetrating through the tray body and a flange connected to one end of the exposed tray body of the hollow tube, a plurality of protruding columns 28 are mounted on an inner wall of the hollow tube, the protruding columns 28 are disposed in a radial direction of the hollow tube, a plurality of protruding columns 28 are arranged along an axial direction of the hollow tube, a plurality of air bags 27 are disposed between a pipe orifice position of the exposed tray body of the hollow tube and the protruding columns 28 in the tube, the air bags 27 are communicated through a communication pipe 29, a signal line 26 extends out of the tray body through a gap between the air bags 27 and the protruding columns 28, taking the square-shaped monitoring tray 22 as an example, when the square monitoring disc 22 and the geomembrane 11 are installed under water, under the action of water pressure, the air bags 27 at the pipe orifice outside the disc body are compressed, the air bags 27 are communicated with each other through the communication pipe 29, after the air bags 27 outside the pipe orifice are compressed, the air bags 27 in the hollow pipe of the wiring plug 20 are expanded, the air bags are further wrapped on the circumference of the signal wire 26 passing through the wiring plug 20, the signal wire 26 is surrounded by the air bags 27, protruding columns 28 are staggered in the pipe diameter of the signal wire 26 to become 36918 and 36836, and in this way, the air bags 27 and the protruding columns 28 cooperate to increase the bending degree in the pipe, so that on one hand, the waterproof sealing effect in the monitoring disc is ensured, on the other hand, because the protruding columns 28 are made of soft rubber materials, when the stress strain sensor 14 in the square monitoring disc 22 is stressed, the signal wire 26 can freely stretch in the hollow pipe when weak displacement occurs, the situation that the signal wire 26 and the wiring terminal of the internal stress strain sensor 14 are broken due to overlarge stress so that stress signals cannot be transmitted is avoided, and thus the working reliability of the monitoring disc is greatly improved.
In fig. 13 and 14, a rope limiting device is provided, in order to ensure that the ropes in a monitoring array effectively displace under the action of stress, and the ropes are not deviated due to the catch of attachments, the rope limiting device can be arranged on the ground of the bottom of a water reservoir or the bottom of a canal through which the ropes pass, the rope limiting device comprises an upper mounting seat 30, a turning edge 13 is arranged on the left side and the right side of the upper mounting seat 30, a mounting hole is arranged on the turning edge 13, an upper groove pipe 38 is arranged on the lower bottom surface of the upper mounting seat 30, the upper groove pipe 38 passes through and is parallel to the left and right symmetrical central axes of the upper mounting seat 30, the upper groove pipe 38 is a groove pipe with an opening at the lower side, a side wall hollowed-out hole 39 is arranged on one side of the middle section of the upper groove pipe 38, the upper mounting seat 30 is connected with a lower mounting seat 32 positioned right below in a matched manner, a lower groove 37 is arranged on the lower mounting seat 32 at a position corresponding to the upper groove pipe 38, the lower groove 37 is provided with a ratchet wheel 31 corresponding to a side wall hollowed hole 39 of the upper groove pipe 38, the ratchet wheel 31 is matched with a conical body 34 right below the lower mounting seat 32 through a ratchet wheel main shaft 36, the conical body 34 comprises an upper plane and a conical drill at the lower part, spiral threads are arranged on the side wall of the conical drill to play a role of a drill bit in use, time and labor are saved, a counter bore along the axial axis direction of the conical drill at the lower part is arranged at the radial center of the upper plane, radial notches 33 are arranged on two opposite side walls of the conical drill and close to the upper plane, the radial notches 33 are communicated with the counter bores, the ratchet wheel main shaft 36 is matched with the counter bores, the lower end of the ratchet wheel main shaft 36 is connected with the middle part of a transverse torsion bar 35 at the lower part, two ends of the transverse torsion bar 35 are positioned in the radial notches 33, when the ropes are buckled in the lower grooves 37 and the upper groove pipes 38 of the upper mounting seat 30 and the lower mounting seat 32, the conical body 34 is implanted into mud at the bottom of a water reservoir or at the bottom of a canal, when the ropes are subjected to stress to displace, the ratchet wheel 31 is triggered to rotate, the ratchet wheel 31 is a one-way wheel and only rotates towards one direction, under the driving of the ratchet wheel 31, the ratchet wheel main shaft 36 drives the transverse torsion bar 35 in the radial notch 33 to rotate and apply moment on the conical body 34, so that the conical drill at the lower part of the conical body 34 drills into the mud, and the displacement of the stress on the ropes is limited, so that the conical drill does not perform too large feeding, and only the node array formed by the ropes and the geomembrane 11 laid on the node array are tightly attached to the bottom of the water reservoir or the canal, thereby avoiding the displacement of the geomembrane 11; even if gas exists below the geomembrane 11, the geomembrane 11 still can be attached to the reservoir bottom or the canal bottom under the action of the rope and the cone 34, which is equivalent to uniformly spreading the gas in a larger area below the geomembrane 11, so that local bulge of the geomembrane 11 is avoided, the gas is delayed or prevented from accumulating at a smaller point of the geomembrane 11, the local stress is delayed to cause damage, and under the action of the rope and the rope limiting device, the geomembrane 11 has a stronger tensile effect and a firmer ground grabbing effect, and accidental damage of the underwater geomembrane 11 is reduced from two aspects. In addition, a torque sensor can be arranged between the ratchet main shaft 36 and the lower mounting seat 32, and the signal wire of the torque sensor is connected into the control box through a corresponding data bus and the signal uploading network is transmitted to the central server 8, so that the stress monitoring of the underwater geomembrane is supplemented, and a new way of stress monitoring is established.
Here, when the rope is pulled by the opposite stress of the other direction, the rope moves in the opposite direction, and the ratchet wheel 31 moving in one direction does not participate in the movement, so that the conical drill is ensured to drill holes only to the bottom of the reservoir bottom or the canal bottom, and the whole rope limiting device is prevented from being screwed out of mud of the reservoir bottom or the canal bottom;
the rope limiting device can ensure the rope not to be twisted, and meanwhile, the groove structure can also clear mud or other attachments attached to the rope, so that the geomembrane and the rope can meet the laying of the water reservoir bottom or canal bottom or partial water bottom with undulation. In addition, although each rope is bound to each disc body, the disc body does not have larger displacement, if the rope limiting device is connected below the disc bodies of the fan-shaped disc 12 or the square monitoring disc 22 or the pentagonal monitoring disc 24 or the regular hexagonal monitoring disc 40 and is pricked into mud, the limitation on the displacement amplitude of the disc bodies is realized under the condition that the stress monitoring is not influenced, and the traction amplitude of the disc bodies to the geomembrane bodies in the stress strain is further reduced or avoided, so that the whole system can obtain more reliable operation guarantee.
In the description of the present specification, reference to the term "one embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (1)
1. An underwater geomembrane monitoring method adopting pentagonal monitoring panels is characterized by comprising the following steps:
setting at least three rows of monitoring nodes in a reservoir bottom or a canal bottom water area to form an odd-numbered row or even-numbered row of monitoring node array, wherein each even-numbered row of monitoring nodes is respectively arranged between every two adjacent odd-numbered row of monitoring node spacing areas, each monitoring node comprises a stress-strain monitoring device, each stress-strain monitoring device of each even-numbered row of monitoring nodes comprises a pentagon monitoring disc and a pentagon cover matched with the pentagon monitoring disc, ropes are connected between the stress-strain monitoring devices of the monitoring nodes in each row, the stress-strain monitoring devices of the adjacent rows of monitoring nodes are connected through the ropes to form triangular meshes, wherein the stress-strain monitoring devices of the first monitoring node of the adjacent odd-numbered row are also connected with the ropes, and the stress-strain monitoring devices of the tail end monitoring nodes of the adjacent odd-numbered row are also connected through the ropes;
five sides of the pentagon monitoring disc comprise an upper straight side and a lower straight side which are parallel to each other, a left straight side which is perpendicular to the upper straight side and the lower straight side respectively, a right side comprises an upper section side and a lower section side, one end of the upper section side is connected with the right end part of the upper straight side, one end of the lower section side is connected with the right end part of the lower straight side, the other ends of the upper section side and the lower section side are mutually connected, the connection intersection point of the upper section side and the lower section side is far away from the left straight side of the pentagon monitoring disc to form an outer bulge, a line collecting table is arranged in the middle part in the pentagon monitoring disc, a wiring plug is arranged on the line collecting table, a pair of bolt holes are respectively arranged at the edges close to the upper side and the lower side of the line collecting table, the two pairs of bolt holes are symmetrical with respect to the center of the line collecting table, a bolt hole is arranged at the edge close to the right side of the line collecting table in the pentagon monitoring disc, wherein the radial center of the bolt hole at the right edge of the line concentration table is opposite to the vertex angle formed by the connection intersection point of the upper section edge and the lower section edge and is positioned on the extension line of the angular bisector of the vertex angle, the radial center of a pair of bolt holes respectively arranged at the upper side and the lower side edge of the line concentration table is positioned on the diagonal line of the mutual cross connection of two pairs of vertex angles at the two ends of the upper straight edge and the lower straight edge of the pentagon monitoring panel, one ends of five connecting pieces are respectively matched with the bolt holes through bolts to be fastened on the line concentration table, the other ends of the five connecting pieces are respectively and independently connected with a stress strain sensor, the other end of each stress strain sensor, which is far away from the connecting piece, is provided with a fastening hole, one end of a rope is pressed on the other end of the stress strain sensor, which is far away from the connecting piece, through the matching of the bolts and the fastening hole, the side wall of the pentagon monitoring disc is provided with a waterproof plug, five ropes penetrate out of the side wall through the waterproof plug and are connected with other adjacent monitoring nodes, and signal wires of the five stress strain sensors are respectively and electrically connected with a control bus in the line through the wiring plug;
The wiring plug is arranged at the position of a line concentration table in the disc body of the pentagonal monitoring disc; the wiring plug comprises a hollow pipe penetrating through the disc body and a flange connected with one end of the disc body exposed out of the hollow pipe, a plurality of protruding columns are arranged on the inner wall of the hollow pipe, the protruding columns are arranged in the radial direction of the hollow pipe, the protruding columns are distributed along the axial direction of the hollow pipe, a plurality of air bags are arranged at the pipe opening position of the outer part of the disc body exposed out of the hollow pipe and between the protruding columns in the pipe, the air bags are communicated through a communication pipe, and a signal wire penetrates through a gap between the air bags and the protruding columns and extends out of the disc body;
the rope limiting device comprises an upper mounting seat, a turning edge is arranged on the left side edge and the right side edge of the upper mounting seat, a mounting hole is formed in the turning edge, an upper groove pipe is arranged on the lower bottom surface of the upper mounting seat, the upper groove pipe passes through and is parallel to the left symmetrical central axis and the right symmetrical central axis of the upper mounting seat, the upper groove pipe is a groove pipe with an opening below, a side wall hollowed-out hole is formed in one side of the middle section of the upper groove pipe, the upper mounting seat is connected with a lower mounting seat positioned right below in a matched manner, a lower groove is formed in the lower mounting seat and corresponds to the upper groove pipe, a ratchet wheel is arranged in the position of the side wall hollowed-out hole of the lower groove corresponding to the upper groove pipe, the ratchet wheel is matched with a conical drill of the lower mounting seat through a ratchet spindle, spiral threads are formed in the side wall of the conical drill of the upper part, a countersink is formed in the radial center position of the upper part along the axial direction of the conical part of the lower part, a countersink is formed in the radial direction of the upper part, the countersink is positioned on the upper part, and is positioned between the two opposite side walls of the upper part and the countersink, and is positioned in the radial gap is positioned between the two opposite side walls of the upper side walls of the ratchet wheel and the transverse spindle;
Step two, keeping tension among ropes in the monitoring node array, fixedly mounting a stress-strain detection device arranged on each monitoring node on one downward surface of a geomembrane, laying the geomembrane together with the stress-strain detection device of the monitoring node on the downward surface on the surface of an underwater reservoir bottom or channel bottom, wherein the stress-strain detection devices in the monitoring nodes in each row are connected with control buses of the row, and the control buses of each row are electrically connected with a control box arranged on a dyke;
thirdly, when any one geomembrane deforms, stress strain monitoring devices in monitoring nodes at corresponding positions on the back of the geomembrane firstly sense stress and send out data signals, meanwhile, ropes connected with the stress strain monitoring devices are involved, the stress strain monitoring devices in peripheral monitoring nodes sense deformation of the geomembrane and send out data signals, each data signal is transmitted to a control box through a control bus where the data signals are located, a controller in the control box uploads each data signal to a cloud server, an internal program of a central server of the control center performs time sequencing on the sent signals and compares the signals with a threshold lower limit of stress peaks born by the geomembrane, stress peak signals smaller than the threshold lower limit are abandoned, the stress peak signals larger than the threshold lower limit are recorded, the threshold lower limit is set to 80-140N/125 px, N units are N, and px is a pixel; taking the coordinate of the monitoring node where the stress-strain monitoring device with the maximum signal peak value or the first signal is located as the position coordinate of the deformation or damage position of the geomembrane; and a technician learning the coordinate signal checks the corresponding monitoring node and the surrounding area thereof, so that the deformation or damage position of the geomembrane can be obtained relatively accurately, and technical support is provided for further emergency treatment.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5567932A (en) * | 1995-08-01 | 1996-10-22 | Sandia Corporation | Geomembrane barriers using integral fiber optics to monitor barrier integrity |
| DE10151021A1 (en) * | 2001-10-16 | 2003-04-30 | Infineon Technologies Ag | Sensor arrangement |
| CN103575664A (en) * | 2013-10-08 | 2014-02-12 | 南京航空航天大学 | Structural multiscale health monitoring device and structural multiscale health monitoring method on basis of novel integrated type composite sensor array |
| CN206583402U (en) * | 2017-03-06 | 2017-10-24 | 东莞前沿技术研究院 | A kind of deformation detecting device |
| CN107389531A (en) * | 2017-08-18 | 2017-11-24 | 上海甚致环保科技有限公司 | Monitoring of leakage system for geomembrane |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5221570A (en) * | 1991-09-03 | 1993-06-22 | Cem Gokcen | Multilayered coextruded geomembrane |
| GB2405934A (en) * | 2003-09-09 | 2005-03-16 | Qinetiq Ltd | Resistance strain/moisture gauge |
| BRPI0418715A (en) * | 2004-03-24 | 2007-09-11 | Ten Cate Geosynthetics France | process for locating and measuring deformations of a civil engineering work |
| CN101539396B (en) * | 2009-04-09 | 2011-01-12 | 北京佳讯飞鸿电气股份有限公司 | Application system for monitoring stress deformation of tunnel |
| CN101561430B (en) * | 2009-05-25 | 2013-06-12 | 重庆交通大学 | System for monitoring crack of piezoelectric-array converged alertness network structure and monitoring and installing methods |
| US8547534B2 (en) * | 2009-09-03 | 2013-10-01 | Honda Motor Co., Ltd. | Optical fiber sensor, pressure sensor, end effector and sensor signal processor |
| CN101793502B (en) * | 2010-02-20 | 2013-05-15 | 昆明理工大学 | Method for detecting breakage position of built-in geomembrane by fiber strain |
| US10697760B2 (en) * | 2015-04-15 | 2020-06-30 | General Electric Company | Data acquisition devices, systems and method for analyzing strain sensors and monitoring component strain |
| US20170176269A1 (en) * | 2015-12-17 | 2017-06-22 | General Electric Company | Components with array-based strain sensors and methods for monitoring the same |
| CN106931896B (en) * | 2017-03-31 | 2020-04-17 | 四川大学 | Optical fiber sensing technology and system for deformation monitoring of geomembrane anti-seepage earth-rock dam |
| CN107702689A (en) * | 2017-10-11 | 2018-02-16 | 北京国华恒源科技开发有限公司 | The monitoring system and monitoring method of a kind of surface subsidence monitoring |
-
2018
- 2018-06-19 CN CN201810631954.0A patent/CN108759769B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5567932A (en) * | 1995-08-01 | 1996-10-22 | Sandia Corporation | Geomembrane barriers using integral fiber optics to monitor barrier integrity |
| DE10151021A1 (en) * | 2001-10-16 | 2003-04-30 | Infineon Technologies Ag | Sensor arrangement |
| CN103575664A (en) * | 2013-10-08 | 2014-02-12 | 南京航空航天大学 | Structural multiscale health monitoring device and structural multiscale health monitoring method on basis of novel integrated type composite sensor array |
| CN206583402U (en) * | 2017-03-06 | 2017-10-24 | 东莞前沿技术研究院 | A kind of deformation detecting device |
| CN107389531A (en) * | 2017-08-18 | 2017-11-24 | 上海甚致环保科技有限公司 | Monitoring of leakage system for geomembrane |
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