CN110263985B - Electric method monitoring and early warning system for water permeation of water delivery culvert, dike and side slope water body - Google Patents
Electric method monitoring and early warning system for water permeation of water delivery culvert, dike and side slope water body Download PDFInfo
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Abstract
The embodiment of the invention provides an electric monitoring and early warning system for water delivery dark culvert, dike and slope water body permeation, wherein a monitoring center is connected with a data acquisition system arranged on a monitoring line, the monitoring center plans sections, sub-sections and minimum acquisition areas of the data acquisition system according to related information of the monitoring line, the data acquisition system realizes automatic division of the sections and the sub-sections, each sub-section simultaneously acquires data by taking the minimum acquisition area as a unit and forwards advances by a certain step distance until the first-stage monitoring data is completed, and the multi-stage data acquisition of the data acquisition system is realized by going back and forth; the monitoring center receives data of the data acquisition system to perform resistivity imaging, and achieves the purpose of monitoring and early warning of water body permeation according to the time lapse change characteristics of resistivity. The invention provides a complete solution for the problems of the penetration of water bodies at different depths of underground water delivery culverts, dikes and high slopes in long distance, remote and unattended manner, and the problems of high-efficiency monitoring and real-time early warning.
Description
Technical Field
The invention relates to the technical field of geophysical and water engineering monitoring, in particular to an electric method monitoring and early warning system for water delivery dark culverts, dikes and side slope water body permeation.
Background
In water engineering, potential safety hazards such as water body permeation exist in water engineering canal dikes, underground box culverts, PCCP pipe culverts, inverted siphons, reservoir slope and the like due to a plurality of reasons, and if water body permeation is not discovered in time and treated, the water body permeation can be further developed into dangerous situations such as leakage, collapse, landslide and the like. The direct current method of geophysical is an effective method for discovering water body permeation, because when the rock-soil body is permeated by water, its resistivity can be reduced, and by utilizing this basic rule, a fixed and long-term direct current method detection line (or surface) is arranged at the key position of water engineering and side slope, and the resistivity change of the rock-soil body can be monitored, so that the water body permeation can be timely discovered, and the goal of early warning can be reached.
However, the current detection technology and equipment by direct current method cannot meet the requirements of monitoring and early warning the water permeation of underground water delivery culverts, dikes and side slopes in water engineering. Firstly, the direct current electrical method detection technology applied to water engineering at present is a one-time static mode, and whether water body permeates or not can not be completely determined only by one-time detection; secondly, the existing direct current method detection equipment is poor in layout flexibility, extremely small in electricity, short in detection length, long in time and low in efficiency, needs manual field operation, cannot be observed in the field for a long time and fixedly, and even if the equipment can be fixed and the electrodes are enough, the existing equipment needs to finish one-time data acquisition for long-line detection of dozens of kilometers; thirdly, the direct current method big data monitored for a long time lack a corresponding data analysis and early warning software platform.
Disclosure of Invention
The embodiment of the invention provides an electric method monitoring and early warning system for water delivery dark culvert, dike and slope water body permeation, which overcomes or at least partially solves the problems.
The embodiment of the invention provides an electric method monitoring and early warning system for water delivery dark culverts, dikes and side slope water body permeation, which comprises the following steps: a monitoring center and a data acquisition system; wherein the content of the first and second substances,
the monitoring center comprises a direct current power supply and a monitoring system;
the data acquisition system comprises a plurality of data acquisition units, the data acquisition units are spaced by data acquisition unit intervals, and each data acquisition unit comprises a data acquisition unit and two grounding electrode arrays;
the data acquisition unit comprises an electrode conversion module, a three-to-one switch module, two four-core cable interfaces and a selective switch module, wherein the electrode conversion module comprises an electrode selective switch array and two multi-core cable interfaces; the two grounding electrode arrays are respectively connected with the electrode selective switch array through the two multi-core cable interfaces, and the two four-core cable interfaces and the selective switch module are connected with the electrode selective switch array through the three-out-of-one switch module; a plurality of data collectors in the plurality of data acquisition units are connected in parallel through data communication lines, one end of each data communication line is connected with the monitoring system, or the plurality of data collectors in the plurality of data acquisition units are connected in parallel through a 4G/5G network; two adjacent data collectors in the plurality of data collectors are connected through a four-core cable, and two ends of the four-core cable are respectively connected to a four-core cable interface and a selective-breaking switch module of the two adjacent data collectors; the data collectors are connected in parallel through power supply lines, and one end of each power supply line is connected with the direct-current power supply;
the direct current power supply is used for supplying power to the data acquisition system; the monitoring system is used for sending data acquisition planning parameters to the data acquisition system;
the data acquisition system is used for dividing the data acquisition system into a plurality of sections according to the data acquisition planning parameters, dividing each section into a plurality of sub-sections, determining a minimum acquisition area in each section, wherein the length of each sub-section of each section is at least 10 times of the length of the minimum acquisition area of each section, simultaneously acquiring the data in the plurality of sub-sections by taking the minimum acquisition area as a unit according to a high-density electrical method principle, simultaneously advancing forwards at a step pitch not more than one half of the length of the minimum acquisition area until the data acquisition of all the sections of the data acquisition system is completed, and circularly acquiring the multi-period data of the data acquisition system, wherein the data acquisition system sends acquired multi-period current and voltage data to the monitoring system by taking the minimum acquisition area of each section as a unit;
the monitoring system is used for carrying out resistivity imaging processing on the received multi-period current and voltage data by taking the minimum acquisition area as a unit, combining the acquired data of the minimum acquisition area by one section for carrying out the resistivity imaging processing, simultaneously carrying out analysis and judgment on water body permeation of a monitored object according to the time lapse change characteristics of the multi-period resistivity imaging, and issuing early warning information according to the water body permeation analysis and judgment result.
Furthermore, the grounding electrode array comprises a multi-core cable and a plurality of grounding electrodes, a plurality of electrode interfaces are arranged on the multi-core cable, each core wire of the multi-core cable only corresponds to one electrode interface, and the electrode interfaces are connected with the grounding electrodes in a one-to-one correspondence manner.
Further, the data acquisition unit pitch in each section of the data acquisition system is equal to the ground electrode pitch of two adjacent ground electrode arrays.
Furthermore, the data acquisition system is specifically configured to set the sub-regions according to the data acquisition planning parameters, and the setting method of the sub-regions includes setting the front four-core cable interface and the selector switch module in the first data acquisition device in each sub-region to off, setting the rear four-core cable interface and the selector switch module in the last data acquisition device in each sub-region to off, and gating other front four-core cable interfaces and selector switches and other rear four-core cable interfaces and selector switches of all the data acquisition devices in each sub-region, so that the plurality of sub-regions are formed, and the plurality of sub-regions are isolated from each other.
Further, the monitoring system includes: the system comprises a data acquisition planning module, a data processing module, a dynamic visualization module, a data analysis module and an information release module; wherein the content of the first and second substances,
the data acquisition planning module is used for obtaining the data acquisition planning parameters according to engineering, terrain, hydrology, geology and meteorological information of the monitored object by combining detection/monitoring depth and detection/monitoring precision;
the data processing module is used for processing and analyzing the received current and voltage data in multiple periods to obtain resistivity data corresponding to the current and voltage data in each period of the monitored object;
the dynamic visualization module is used for carrying out resistivity dynamic imaging according to the multi-phase resistivity data corresponding to the multi-phase current and voltage data;
the data analysis module is used for comparing the resistivity imaging corresponding to the current and voltage data of each period with the resistivity imaging corresponding to the current and voltage data of the previous periods to obtain a water body permeation judgment result of the monitored object;
and the information issuing module is used for issuing early warning information according to the water body permeation judgment result.
The embodiment of the invention provides an electric monitoring and early warning system for water delivery dark culvert, dike and slope water body permeation, wherein a monitoring center is connected with a data acquisition system arranged on a monitoring line, the monitoring center plans sections, sub-sections and minimum acquisition areas of the data acquisition system according to related information of the monitoring line, the data acquisition system realizes automatic division of the sections and the sub-sections, each sub-section simultaneously acquires data by taking the minimum acquisition area as a unit and forwards advances by a certain step distance until the first-stage monitoring data is completed, and the multi-stage data acquisition of the data acquisition system is realized by going back and forth; the monitoring center receives data of the data acquisition system to perform resistivity imaging, and achieves the purpose of monitoring and early warning of water body permeation according to the time lapse change characteristics of resistivity. The invention provides a complete solution for the problems of the penetration of water bodies at different depths of underground water delivery culverts, dikes and high slopes in long distance, remote and unattended manner, and the problems of high-efficiency monitoring and real-time early warning.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electrical method monitoring and early warning system for water delivery dark culverts, dikes and side slope water body infiltration provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a type A data collector in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a data collector of the embodiment of the present invention;
FIG. 4 is a schematic diagram of data acquisition planning in an embodiment of the present invention;
FIG. 5 is a schematic diagram of a ground electrode array in an embodiment of the invention;
FIG. 6 is a block diagram of a monitoring system according to an embodiment of the present invention;
description of the drawings:
10-a monitoring center; 20-data acquisition system
11-a monitoring system; 12-a direct current power supply;
21-a data acquisition unit; 22-data communication lines;
23-a four-core cable; 24-a supply line;
25-data acquisition unit spacing; 31-a master control unit;
32-a data acquisition unit separation and combination and electrode selection module; 33-working electrode interface and its selective switch module;
34-a direct current power supply control module; 211-data collector;
212-a multi-core cable; 213-electrode interface;
214-ground electrode; 311-a microcomputer;
312-data acquisition card 313-data acquisition and communication software;
321-switch selection and electrode conversion control module; 322-an electrode switching module;
323-one-out-of-three switch module; 324-four-core cable interface and selection switch module;
331-measuring electrode M, N interface and its select-to-break switch; 332-supply electrode A, B interface and its kill switch;
3221-multi-core cable front interface; 3222-rear interface of multi-core cable;
3223-electrode gating switch array; 3241-front interface of four-core cable and selective switch;
3242-rear interface of four-core cable and selective switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an electrical method monitoring and early warning system for water transportation culvert, dike and slope water penetration provided by an embodiment of the present invention, as shown in fig. 1, including: a monitoring center 10 and a data acquisition system 20. Wherein:
the monitoring center 10 includes a monitoring system 11 and a dc power supply 12. Wherein the monitoring center 10 is generally disposed at the rear.
The data acquisition system 20 includes a plurality of data acquisition units 21, and each data acquisition unit 21 is separated by a data acquisition unit interval 25, and the data acquisition unit 21 includes a data acquisition unit 211 and two ground electrode arrays.
The data acquisition system 20 is a monitoring line disposed at the object. The adjacent data acquisition units 21 of the data acquisition system 20 are arranged according to the data acquisition unit interval 25, and the data acquisition unit interval 25 of each section in the data acquisition system 20 to be combined into a sub-area is equal to the electrode distance of two adjacent grounding electrode arrays. It should be noted that, for the ultra-long monitoring line, it may not be necessary or possible to arrange the continuous data acquisition system 20 by the data acquisition system 20, and at this time, the data acquisition system 20 may be arranged on the monitoring line as a plurality of subsystems, and the characteristics of each subsystem are completely consistent with the characteristics of the data acquisition system 20.
As shown in fig. 2-3, the data collector 211 includes an electrode conversion module 322, a one-out-of-three switch module 323, and two four-core cable interfaces and a selective-breaking switch module 324, where the electrode conversion module 322 includes an electrode selective-breaking switch array 3223 and two multi-core cable interfaces 3221 and 3222; the two grounding electrode arrays are respectively connected with the electrode disconnecting switch array 3223 through the two multi-core cable interfaces 3221 and 3222, and the two four-core cable interfaces and the disconnecting switch module 324 are connected with the electrode disconnecting switch array 3223 through the one-out-of-three switch module 323.
In practice, the data collector 211 may be divided into a type a data collector shown in fig. 2 and a type b data collector shown in fig. 3, a data collection unit including the type a data collector is referred to as a type a data collection unit, and a data collection unit including the type b data collector is referred to as a type b data collection unit. The type A data collector comprises a main control unit 31, a data collecting unit on-off and electrode selecting module 32, a working electrode interface and selective-off switch module 33 and a direct-current power supply control module 34. Compared with the data collector A, the data collector B does not comprise the main control unit 31, the working electrode interface and the selective-breaking switch module 33 thereof. The type A data collector can be used as a main control data collector, and the type B data collector can not be used as a main control data collector. Wherein:
the main control unit 31 includes a microcomputer 311, a data acquisition card 312, and data acquisition and communication software 313. The main function of the main control unit 31 is to communicate data with the monitoring system 10, plan electrode arrangement for data acquisition, transmit electrode selection commands and control parameters to the unit and other units, and complete data acquisition.
The data acquisition unit dividing and combining and electrode selecting module 32 includes a switch selecting and electrode switching control module 321, an electrode switching module 322 (including a multi-core cable front interface 3221, a multi-core cable rear interface 3222, and an electrode selecting switch array 3223), a one-out-of-three (one-off, two-on) switch module 323, two four-core cable interface and selecting switch modules 324 (including a four-core cable front interface and selecting switch 3241, and a four-core cable rear interface and selecting switch 3242). The data acquisition unit on-off and electrode selection module 32 of the type A data acquisition unit is used for sub-area combination and sub-area partition of the data acquisition system, and selects a working electrode from the grounding electrodes of any data acquisition unit in the sub-area; the data acquisition unit on-off and electrode selection module 32 of the data acquisition unit B is used for sub-area combination and sub-area partition of the data acquisition system, and can only select working electrodes for the main control data acquisition unit in the grounding electrode of the data acquisition unit.
The working electrode interface and its selection switch module 33 includes a power supply electrode A, B interface and its selection switch 332, and a measurement electrode M, N interface and its selection switch 331. When the A-type data collector is used as a master control data collector, the selected power supply electrode is powered, and an interface of the selected measuring electrode is provided for data acquisition and measurement of current and voltage data of an ABMN device; when the A-type data collector is used as a non-master control collector, the selective-break switches are all disconnected at the moment, and power supply to the electrodes selected by the master control data collector is ensured not to be provided.
And the direct-current power supply control module 34 is used for supplying power for the data acquisition device to work and supplying power to the power supply electrode A, B.
A plurality of data collectors 211 in the plurality of data acquisition units 21 are connected in parallel through data communication lines 22, one end of the data communication lines 22 is connected with the monitoring system 11, and in practice, for an ultra-long distance, the plurality of data collectors 211 in the plurality of data acquisition units 21 are connected in parallel through a 4G/5G network; two adjacent data collectors 211 in the plurality of data collectors 211 are connected through a four-core cable 23, and two ends of the four-core cable 23 are respectively connected to a four-core cable interface of the two adjacent data collectors 211 and the selector switch module 324; the data collectors 211 are connected in parallel through a power supply line 24, and one end of the power supply line 24 is connected with the direct-current power supply 12.
The direct current power supply 12 is used for supplying power to the data acquisition system 20; the monitoring system 11 is configured to send a data acquisition planning instruction to the data acquisition system 20. The data acquisition system 20 is configured to divide the data acquisition system 20 into a plurality of sections according to the data acquisition planning instruction, divide each section into a plurality of sub-regions, determine a minimum acquisition region in each sub-region, complete multi-period data acquisition in the plurality of sub-regions according to the high-density electrical method principle with the minimum acquisition region as a unit, and send acquired multi-period current and voltage data to the monitoring system 11. The monitoring system 11 is configured to process and analyze the received current and voltage data to obtain a water body permeation judgment result of the monitored object, and issue early warning information according to the water body permeation judgment result.
The data acquisition system 20 comprises a plurality of data acquisition units 21, and can be composed of a type A data acquisition unit or a type A and a type B data acquisition unit which are mixed according to requirements, wherein data acquisition units 211 in the plurality of data acquisition units are connected in parallel on a data communication cable 22 or a 4G/5G network and are connected with a monitoring system 11 of the monitoring center 10, and each data acquisition unit 21 is uniquely identified in the data acquisition system 20 through the data acquisition units 211; when the distance between the grounding electrodes 214 of the adjacent data acquisition units 21 is the same and the distance 25 between the data acquisition units is equal to the grounding electrode distance, the adjacent data acquisition units 21 can be combined into sub-areas, and the data acquisition of the sub-areas can be ensured to be simultaneously carried out by the partition arrangement of the data acquisition unit 211 without mutual influence; the data collectors 211 of the type A and type B data acquisition units respectively correspond to the type A and type B data acquisition units, and each subsection contains 1-3 or all the type A data acquisition units which are uniformly distributed; the A-type data collector of each subarea is used as a main control collector to finish a minimum collecting area data, then the control right can be transferred to another A-type data collector in the subarea, and then the A-type data collector is used as a non-main control data collector to upload data to the monitoring system 11; the type A data collector in the data acquisition system 20 communicates with the monitoring system 11 to receive corresponding data acquisition planning parameters and upload acquired data; the A-type data acquisition unit in the data acquisition system 20 communicates with other data acquisition units to divide and combine sub-regions, and the working electrode of any data acquisition unit in the sub-region is selected and disconnected; the data acquisition unit B in the data acquisition system 20 receives the selection parameters and instructions of the working electrodes of the data acquisition unit A and the combination and isolation instructions of the data acquisition units, and completes the operation. The working electrodes are the power supply electrode A, B and the measuring electrode M, N, which need to be selected once and again according to the data acquisition rule of the high-density electrical method principle, and each ABMN device can only measure one current and voltage data of the MN electrode.
Further, the monitoring system 11 receives the data acquired by the data acquisition system 20 by taking the minimum acquisition area of each sub-area as a unit, starts processing, resistivity imaging and database management from the data of the minimum acquisition area of each sub-area, compares the data with the previous multi-period resistivity imaging analysis, receives a batch of data, combines and processes a batch of data, and dynamically analyzes a batch of data, and when the multi-period resistivity reduction change caused by water body permeation occurs in the multi-period contrast analysis, the monitoring system issues early warning information of relevant parts.
Specifically, the process of monitoring and early warning the water body engineering such as water delivery culvert, dike, side slope and the like by the system is as follows:
firstly, the monitoring system 11 collects the engineering, terrain, hydrology, geology, meteorology and other information of the monitored object, performs layout planning of the data acquisition system according to the information, the monitoring depth and the monitoring precision, and forms data acquisition planning parameters, wherein the data acquisition planning parameters comprise relevant parameters of each section, each sub-area and the minimum acquisition area. The specific planning process comprises the following steps:
(1) monitoring line planning
The number of the data acquisition systems is designed according to information such as monitored objects, field conditions and the like, for example: the underground hidden culverts are respectively arranged at two sides and 1-7 m away from the boundary of the hidden culverts along the trend of the hidden culverts; the embankment or the canal embankment is respectively arranged on the upstream surface, the downstream surface and the embankment top along the trend, and a plurality of embankments are arranged along the vertical trend; and the high slope adopts network wiring according to the field condition.
(2) Monitoring line segment planning
A data acquisition system 20 connected with the monitoring system 11 of the control center 10 can be arranged on a monitoring line, the data acquisition system 20 can be infinitely extended theoretically, and the length of the monitoring line is as short as dozens of meters and thousands of kilometers. The data acquisition planning module of the monitoring system 11 combines the curvature, the field condition, the obstacle, the monitoring depth, the monitoring precision and the like of the monitoring lines to perform the section division on the data acquisition system of each monitoring line, and the general principle is to avoid the obstacle and make the monitoring lines of each section as straight as possible.
(3) Minimum acquisition area planning for a sector
When a section is taken as a whole and the route is long, the data acquisition in one period is very time-consuming. The minimum acquisition area of the section is set according to the distance between the grounding electrodes to meet the requirements of monitoring depth and accuracy and improve the data acquisition speed. When the electrode distances of the sections are the same, if the monitoring depths of different sections are different, the minimum acquisition area can be different, and generally, the larger the minimum acquisition area is, the deeper the monitoring depth is. Therefore, in order to improve the acquisition efficiency, a minimum acquisition area is planned in a section, and after the first-stage data acquisition of the minimum acquisition area is finished by an acquisition device (such as alpha arrangement, beta arrangement, gamma arrangement and the like) based on a high-density electrical method principle from the minimum acquisition area at the starting point of the section, the minimum acquisition area is advanced by a certain step pitch, so that the data acquisition speed is improved, and the advance step pitch is generally one third as long as the minimum acquisition area in order to achieve the coverage effect.
(4) Sub-region planning of a sector
In general, when only one type a data collector of a data collection system 20 works 211, it can be ensured that collected data is not interfered, which greatly affects the data collection speed. When each section of the data acquisition system is long enough, the sub-areas divided in the section are set up for a plurality of A-type data acquisition devices in the section to acquire synchronously without mutual influence. The data acquisition unit 211 of the data acquisition system 20 of the embodiment of the present invention can acquire data simultaneously, which is an acquisition mode with the highest efficiency, but the distance between two pairs of power supply electrodes of adjacent data acquisition units 211 performed simultaneously on the data acquisition system 20 is too close, the underground electric fields formed by the two pairs of power supply electrodes will affect each other, and theoretically, the distance between two pairs of power supply electrodes of two adjacent minimum acquisition regions performed simultaneously is at least 10 times the distance between the maximum power supply electrodes in the two minimum acquisition regions. In order to meet the data acquisition requirement and improve the data acquisition efficiency, each section must be divided into sub-areas, and the minimum acquisition area in each sub-area is taken as a unit to simultaneously acquire data, so that the data acquisition speed can be greatly improved, and generally, the sub-area length of each section needs to be at least 10 times of the minimum acquisition area of the section.
For example, as shown in fig. 4, 2 sections are scribed on the monitor line: segment 1, segment 2; sector 1 divides into subzone 1 and subzone 2, and sector 3 divides into subzone 3 and subzone 4. The minimum acquisition region 1 is maximally one tenth of the smaller length of the sub-region 1, the sub-region 2, the minimum acquisition region 2 is maximally one tenth of the smaller length of the sub-region 3, the sub-region 4, and the lengths of the minimum acquisition region 1 and the minimum acquisition region 2 may also be equal. The sub-areas 1, 2, 3 and 4 of the 4 sections are simultaneously collected by the minimum collection area of the section from the starting point, the data collection of one minimum collection area is completed, the data collection is advanced by a step of one third of the length of the minimum collection area, the data collection is sequentially carried out until the data collection of each sub-area is completed, and the primary data collection is not completed.
Particularly, when the monitoring objects are laid with several parallel or network monitoring lines, the division of each sub-area, the determination of the minimum acquisition area and the acquisition order thereof are calculated by the data acquisition planning module of the monitoring system 11.
(5) Data acquisition system planning
The data acquisition system 20 is composed of a plurality of data acquisition units 21, the data acquisition units 211 of the data acquisition units 21 are of a type A data acquisition unit and a type B data acquisition unit, the type A data acquisition unit has data communication, data acquisition and electrode selection functions, the type B data acquisition unit has instruction, receiving and electrode conversion functions, and the corresponding data acquisition units 21 are divided into a type A data acquisition unit and a type B data acquisition unit. The adjacent data acquisition units 21 can be combined into segments according to sub-regions, and each sub-region can independently acquire data without mutual influence. When the subzones all adopt the type A data acquisition unit, the damage of the data acquisition unit does not affect the data acquisition of other data acquisition units. In order to save cost, the type A data acquisition units and the type B data acquisition units can be mixed, one subregion contains one type A data acquisition unit to finish data acquisition of the whole subregion, and 2 to 3 type A data acquisition units can be uniformly arranged in one subregion in consideration of fault tolerance and data acquisition and uploading efficiency.
(6) Data acquisition planning fine tuning
According to the planning of the data acquisition planning module, the field arrangement also needs to adapt to the actual field situation, so that the data acquisition planning module needs to acquire the actual information of the coordinates of the field section, the sub-area and the grounding electrode for planning and fine adjustment, and then the information is sent to each A-type data acquisition device.
Then, the monitoring system 11 sends the data acquisition planning parameters of the sections, the sub-sections and the minimum acquisition area to the data acquisition system 20, the data acquisition system 20 divides the sections according to the planning parameters, divides each section into a plurality of sub-sections, acquires data in each sub-section according to the minimum acquisition area, and advances synchronously at a certain step pitch.
And finally, the monitoring system 11 receives the current and voltage data acquired by the data acquisition system 20 by taking the minimum acquisition area of each sub-area as a unit, starts processing, resistivity imaging and database management from the data of the minimum acquisition area of each sub-area, compares the data with the previous multi-period resistivity imaging analysis, receives a batch of data, combines the data to process a batch of data and dynamically analyzes a batch of data, and issues early warning information of relevant parts when the multi-period contrast analysis shows obvious resistivity reduction change caused by water body permeation.
The embodiment of the invention provides an electric monitoring and early warning system for water delivery dark culvert, dike and slope water body permeation, wherein a monitoring center is connected with a data acquisition system arranged on a monitoring line, the monitoring center plans sections, sub-sections and minimum acquisition areas of the data acquisition system according to related information of the monitoring line, the data acquisition system realizes automatic division of the sections and the sub-sections, each sub-section simultaneously acquires data by taking the minimum acquisition area as a unit and forwards advances by a certain step distance until the first-stage monitoring data is completed, and the multi-stage data acquisition of the data acquisition system is realized by going back and forth; the monitoring center receives data of the data acquisition system to perform resistivity imaging, and achieves the purpose of monitoring and early warning of water body permeation according to the time lapse change characteristics of resistivity. The invention provides a complete solution for the problems of the penetration of water bodies at different depths of underground water delivery culverts, dikes and high slopes in long distance, remote and unattended manner, and the problems of high-efficiency monitoring and real-time early warning.
In the above embodiment, as shown in fig. 5, in one data acquisition unit 21, the ground electrode array includes a multi-core cable 212 and a plurality of ground electrodes 214, the multi-core cable 212 is provided with a plurality of electrode interfaces 213, and the plurality of electrode interfaces 213 are connected to the plurality of ground electrodes 214 in a one-to-one correspondence manner.
In the above embodiment, the data acquisition unit pitch 25 in each section of the data acquisition system 20 is equal to the ground electrode pitch of two adjacent ground electrode arrays.
In the above embodiment, the data acquisition system is specifically configured to set the sub-regions according to the data acquisition planning parameters, where the front interface and the selector switch module of the four-core cable in the first data acquisition device in each sub-region are set to be off, the rear interface and the selector switch module of the four-core cable in the last data acquisition device in each sub-region are set to be off, and the front interfaces and the selector switches of the other four-core cables and the rear interfaces and the selector switches of the four-core cables of all the data acquisition devices in each sub-region are all gated, so that the plurality of sub-regions are formed, and the plurality of sub-regions are isolated from each other.
Specifically, after receiving a data acquisition planning instruction, the specific working process includes:
(1) sub-area division and combination
When the data acquisition system 20 receives the subsection instructions and parameters of the subareas, one A-type data acquisition device (figure 2) in each selected subarea of each subarea is a subarea main control acquisition device, the subarea main control data acquisition device drives a data acquisition unit on-off and electrode selection module 32 of the subarea data acquisition device, and a four-core cable front interface of a 1 st data acquisition device in the subarea and a switch of a selector switch 3241 are all switched off, so that the 1 st data acquisition unit in the subarea is separated from the previous unit; the switches of the four-core cable rear interface and the selector switch 3242 for data acquisition located at the last of the sub-areas are all turned off, so that the last data acquisition unit of the sub-area is isolated from the next unit, in addition, the other four-core cable front interfaces and the selector switch 3241, the four-core cable rear interface and the selector switch 3242 of all the data acquisition devices in the sub-area are all turned on, the switches of the electrode selector switch arrays 3223 of all the data acquisition devices in the sub-area are all turned off, the four switches of the one-out-of-three (one-off, two-on) switch module 323 are all turned off, and the switches of the working electrode interface and the selector switch module 33 thereof are all turned off, so that the subsection combination of the data acquisition units in the sub-area is completed, and at this time, each data acquisition device in the sub-area is called.
(2) Working electrode selection
To collect current and voltage data of an ABMN electrode device in an initial state in a sub-area, the power supply electrode a is located at the ith electrode of the master control data collector I through calculation, at this time, the master control unit 31 of I sends a parameter and a selection instruction to the switch selection and electrode conversion control module 321 of I, the electrode conversion module 322 of I gates the ith switch of the electrode selection switch array 3223 of I, the a switch of the one-out-of-three (one-off, two-on) switch module 323 of I gates a local machine, so that the one-out-of-three switch module 323 of I directly transmits the selected ith electrode of I to the working electrode interface of I and the selection switch module 332 of I, and gates the a switch of 332, and at this time, the master control data collector completes the selection of the power supply electrode a. After calculation, the power supply electrode B is positioned at the jth electrode of the J-th A-type data collector outside the main control data collector I, the main control data collector I sends a parameter and a breaking instruction to the J-type data collector J, the J-to-J switch breaking and electrode conversion control module 321 sends the parameter and the breaking instruction, according to the steps, the jth switch of the J electrode breaking switch array 3223 is gated, the B switch of the J three-to-one switch module 323 is gated externally, the J-selected jth electrode of the J is transmitted to the B core of the four-core cable 23 connected with the J four-core cable front interface and the breaking switch module 324 through the J323, the working electrode interface of the main control data collector and the B switch of the breaking switch module 331 are gated, and because the other four-core cable front interfaces and the breaking switch 3241, the four-core cable rear interfaces and the breaking switch 3242 in the subarea are all except the two ends of the subarea, at this time, the J-th grounding electrode is communicated with the working electrode interface of the main control data acquisition unit I and the B interface of the selective-breaking switch module 33 thereof through the four-core cable 23 of the data acquisition system 20, so that the selection of the power supply electrode B of the main control data acquisition unit I is completed; if the data collector J is of type B, the master control data collector I will directly send the control parameters and instructions to the switch selection and electrode switching control module 321 of J, and complete the selection of the power supply electrode B according to the same steps. In the same step, the measurement electrode MN is selected in sequence, and the master control data collector can gate all the four switches of the working electrode interface and the selective-off switch module 33 thereof after the working electrode is selected, start to supply power to the AB electrode, measure the current and voltage between the MN electrodes, recover the initial state of the subarea after the completion of the selection, and perform the next data collection.
(3) Time lapse multi-phase data acquisition
Again taking fig. 4 as an example. The section and the sub-area are divided on the monitoring line in the figure, and the minimum acquisition area of each section is determined. The 4 sub-areas start from respective starting points and simultaneously acquire in the minimum acquisition area, the observation system of each minimum acquisition area finishes the first-stage data acquisition of the minimum acquisition area according to the acquisition device (such as alpha arrangement, beta arrangement, gamma arrangement and the like) of the high-density electrical method principle, then the minimum acquisition area of each sub-area is advanced at the step distance of 1/3 minimum acquisition area length, meanwhile, each sub-area selects another non-main control A-type data acquisition period of the sub-area as a main control data acquisition device to acquire data again through the monitoring system, and the data acquisition is sequentially advanced until each sub-area is fully covered. In the process of data acquisition of each sub-area in each period, after the master control power of the master control data acquisition unit is transferred, the acquired data of each section of the minimum acquisition area in each period is uploaded to the monitoring system, so that the efficiency is improved, and the monitoring system can analyze and process the data in time.
The data acquisition of all the subareas is completed and called as one-period data, and then the data acquisition of the next round is carried out and called as time-lapse multi-period data acquisition. Because the measures of synchronous work of the minimum acquisition area of each sub-area, data transmission of a non-master control data acquisition device and the like are adopted, no matter how long the monitoring line is, the first-stage data acquisition can be completed within 20 minutes to 2 hours within the monitoring depth range of 50 meters on the monitoring line.
In the above embodiment, the monitoring system includes: the system comprises a data acquisition planning module, a data processing module, a dynamic visualization module, a data analysis module and an information release module; wherein the content of the first and second substances,
the data acquisition planning module is used for obtaining the data acquisition planning parameters according to engineering, terrain, hydrology, geology and meteorological information of the monitored object by combining detection/monitoring depth and detection/monitoring precision;
the data processing module is used for processing and analyzing the received current and voltage data in multiple periods to obtain resistivity data corresponding to the current and voltage data in each period of the monitored object;
the dynamic visualization module is used for carrying out resistivity imaging according to a plurality of groups of resistivity data corresponding to the current and voltage data in multiple periods;
the data analysis module is used for comparing the resistivity imaging corresponding to the current and voltage data of each period with the resistivity imaging corresponding to the current and voltage data of the previous period to obtain a water body permeation judgment result of the monitored object;
and the information issuing module is used for issuing early warning information according to the water body permeation judgment result.
As shown in fig. 6, the monitoring system further includes: the device comprises a data communication module and a data management module.
Specifically, the monitoring system 11 receives data of the minimum acquisition area of each period of each sub-area of the data acquisition system through the data communication module, the data management module performs data banking on the data of the minimum acquisition area of each sub-area in each period in combination with information such as engineering, terrain, hydrology, geology, weather, monitoring arrangement, sections, sub-areas, minimum acquisition areas, acquisition time and the like, merges the sequentially received data and performs comprehensive management of each period in one period, the data processing module performs segmentation and merging processing from the acquired data of the minimum acquisition area of each sub-area in each period according to a high-density electrical method principle, performs resistance imaging on the underground medium of a monitoring line, and performs database processing and imaging results until the merging processing of the observation data of each period of each section is completed; the four-dimensional dynamic visual module is used for dynamically displaying the resistivity imaging result of the minimum acquisition area of each sub-area in each period by combining the information of the engineering, terrain, hydrology, geology, meteorology, monitoring arrangement and other databases; the data analysis module starts from the minimum acquisition area observation data and imaging results of each sub-area in each period, and performs comparison analysis of multi-period data and imaging results by combining engineering, hydrology, geology, meteorology and other information.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides an electric method monitoring and early warning system of water delivery dark culvert, dyke and side slope water infiltration which characterized in that includes: a monitoring center and a data acquisition system; wherein the content of the first and second substances,
the monitoring center comprises a direct current power supply and a monitoring system;
the data acquisition system comprises a plurality of data acquisition units, each data acquisition unit is separated from each other, the distance between two adjacent data acquisition units is the data acquisition unit distance, and each data acquisition unit comprises a data acquisition unit and two grounding electrode arrays;
the data acquisition unit comprises an electrode conversion module, a three-to-one switch module, two four-core cable interfaces and a selective switch module, wherein the electrode conversion module comprises an electrode selective switch array and two multi-core cable interfaces; the two grounding electrode arrays are respectively connected with the electrode selective switch array through the two multi-core cable interfaces, and the two four-core cable interfaces and the selective switch module are connected with the electrode selective switch array through the three-out-of-one switch module; a plurality of data collectors in the plurality of data acquisition units are connected in parallel through data communication lines, one end of each data communication line is connected with the monitoring system, or the plurality of data collectors in the plurality of data acquisition units are connected in parallel through a 4G/5G network; two adjacent data collectors in the plurality of data collectors are connected through a four-core cable, and two ends of the four-core cable are respectively connected to a four-core cable interface and a selective-breaking switch module of the two adjacent data collectors; the data collectors are connected in parallel through power supply lines, and one end of each power supply line is connected with the direct-current power supply;
the direct current power supply is used for supplying power to the data acquisition system; the monitoring system is used for sending data acquisition planning parameters to the data acquisition system;
the data acquisition system is used for dividing the data acquisition system into a plurality of sections according to the data acquisition planning parameters, dividing each section into a plurality of sub-sections, determining a minimum acquisition area in each section, wherein the length of each sub-section of each section is at least 10 times of the length of the minimum acquisition area of each section, simultaneously acquiring the data in the plurality of sub-sections by taking the minimum acquisition area as a unit according to a high-density electrical method principle, simultaneously advancing forwards at a step pitch not more than one half of the length of the minimum acquisition area until the data acquisition of all the sections of the data acquisition system is completed, and circularly acquiring the multi-period data of the data acquisition system, wherein the data acquisition system sends acquired multi-period current and voltage data to the monitoring system by taking the minimum acquisition area of each section as a unit;
the monitoring system is used for carrying out resistivity imaging processing on the received multi-period current and voltage data by taking the minimum acquisition area as a unit, combining the acquired data of the minimum acquisition area by one section for carrying out the resistivity imaging processing, simultaneously carrying out analysis and judgment on water body permeation of a monitored object according to the time lapse change characteristics of the multi-period resistivity imaging, and issuing early warning information according to the water body permeation analysis and judgment result.
2. The electrical monitoring and early warning system for water delivery culvert, dike and slope water penetration according to claim 1, wherein the ground electrode array comprises a multi-core cable and a plurality of ground electrodes, the multi-core cable is provided with a plurality of electrode interfaces, each core wire of the multi-core cable uniquely corresponds to one electrode interface, and the plurality of electrode interfaces are connected with the plurality of ground electrodes in a one-to-one correspondence manner.
3. The electrical monitoring and early warning system for water delivery culvert, dike and side slope water penetration according to claim 2, wherein the data acquisition unit pitch in each section of the data acquisition system is equal to the ground electrode pitch of two adjacent ground electrode arrays.
4. The electrical monitoring and early warning system for water delivery dark culvert, dike and slope water infiltration according to claim 1, wherein the data acquisition system is specifically configured to divide the data acquisition system into a plurality of sections according to the data acquisition planning parameters, and divide each section into a plurality of sub-sections, and the sub-sections are set by setting a front interface and a selector switch module of a four-core cable in a first data acquisition unit in each sub-section to off, setting a rear interface and a selector switch module of a four-core cable in a last data acquisition unit in each sub-section to off, and gating other front interfaces and selector switches of the four-core cables and rear interfaces and selector switches of the four-core cables of all data acquisition units in each sub-section, so that the plurality of sub-sections are formed, and the plurality of sub-sections are mutually partitioned.
5. The electric method monitoring and early warning system for water delivery culvert, dike and slope water penetration according to claim 1, wherein the monitoring system comprises: the system comprises a data acquisition planning module, a data processing module, a dynamic visualization module, a data analysis module and an information release module; wherein the content of the first and second substances,
the data acquisition planning module is used for obtaining the data acquisition planning parameters according to engineering, terrain, hydrology, geology and meteorological information of the monitored object by combining detection/monitoring depth and detection/monitoring precision;
the data processing module is used for processing and analyzing the received current and voltage data in multiple periods to obtain resistivity data corresponding to the current and voltage data in each period of the monitored object;
the dynamic visualization module is used for carrying out resistivity dynamic imaging according to the multi-phase resistivity data corresponding to the multi-phase current and voltage data;
the data analysis module is used for comparing the resistivity imaging corresponding to the current and voltage data of each period with the resistivity imaging corresponding to the current and voltage data of the previous periods to obtain a water body permeation judgment result of the monitored object;
and the information issuing module is used for issuing early warning information according to the water body permeation judgment result.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988005172A1 (en) * | 1986-12-31 | 1988-07-14 | Arnim Kaus | Geoelectrical process based on structural geology calibration for determining hydraulic characteristic values |
| CN105604066A (en) * | 2015-12-25 | 2016-05-25 | 天津市勘察院 | Application of resistivity profiling method to detection of building foundation pit support structure water leakage |
| CN106501864A (en) * | 2016-11-08 | 2017-03-15 | 珠海国勘仪器有限公司 | The high density electric survey devices and methods therefor that polarizability is measured using metal electrode |
| CN107632048A (en) * | 2017-05-25 | 2018-01-26 | 浙江海洋大学 | A kind of monitoring of LNAPLs subsurface three-dimensionals migration process and data processing method |
| CN108873072A (en) * | 2018-06-25 | 2018-11-23 | 长江勘测规划设计研究有限责任公司 | A kind of hidden defect of levee time shift electrical survey (-ing) system |
| CN108873074A (en) * | 2018-04-18 | 2018-11-23 | 浙江大学 | A kind of three-dimensional high-density method of measuring resistivity and exploration system based on electrode random distribution |
| CN109031428A (en) * | 2018-04-27 | 2018-12-18 | 浙江钱江科技发展有限公司 | A kind of hilly pond embankment seepage detection method |
| CN109507735A (en) * | 2018-11-29 | 2019-03-22 | 长江勘测规划设计研究有限责任公司 | The time shift electrical survey (-ing) method of swelled ground dykes and dams landslide infiltration sliding process tracking |
| CN109782357A (en) * | 2019-02-18 | 2019-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of method of ground Pumping Magnetic Resonance Method and high-density electric combined detection dam leakage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267394A (en) * | 2018-03-09 | 2018-07-10 | 浙江省水利河口研究院 | A kind of earth-rock dam seepage farm monitoring system and its method for early warning |
-
2019
- 2019-06-04 CN CN201910483369.5A patent/CN110263985B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988005172A1 (en) * | 1986-12-31 | 1988-07-14 | Arnim Kaus | Geoelectrical process based on structural geology calibration for determining hydraulic characteristic values |
| CN105604066A (en) * | 2015-12-25 | 2016-05-25 | 天津市勘察院 | Application of resistivity profiling method to detection of building foundation pit support structure water leakage |
| CN106501864A (en) * | 2016-11-08 | 2017-03-15 | 珠海国勘仪器有限公司 | The high density electric survey devices and methods therefor that polarizability is measured using metal electrode |
| CN107632048A (en) * | 2017-05-25 | 2018-01-26 | 浙江海洋大学 | A kind of monitoring of LNAPLs subsurface three-dimensionals migration process and data processing method |
| CN108873074A (en) * | 2018-04-18 | 2018-11-23 | 浙江大学 | A kind of three-dimensional high-density method of measuring resistivity and exploration system based on electrode random distribution |
| CN109031428A (en) * | 2018-04-27 | 2018-12-18 | 浙江钱江科技发展有限公司 | A kind of hilly pond embankment seepage detection method |
| CN108873072A (en) * | 2018-06-25 | 2018-11-23 | 长江勘测规划设计研究有限责任公司 | A kind of hidden defect of levee time shift electrical survey (-ing) system |
| CN109507735A (en) * | 2018-11-29 | 2019-03-22 | 长江勘测规划设计研究有限责任公司 | The time shift electrical survey (-ing) method of swelled ground dykes and dams landslide infiltration sliding process tracking |
| CN109782357A (en) * | 2019-02-18 | 2019-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of method of ground Pumping Magnetic Resonance Method and high-density electric combined detection dam leakage |
Non-Patent Citations (5)
| Title |
|---|
| Images of High Density Resistivity Method in Leakage Detecting of the Watertight Screen at Gushan Open-pit Mine;HUANG Wusheng;《Proceedings of the 2nd International Conference On Systems Engineering and Modeling (ICSEM-13)》;20131231;全文 * |
| The application of high-density resistivity method in organic pollution survey of groundwater and Soil;Y. Jiang;《Procedia Earth and Planetary Science》;20131231;全文 * |
| 综合物探技术在大坝渗漏探测中的试验研究;张建清;《地球物理学进展》;20180131;第33卷(第1期);全文 * |
| 高密度电法多道转换系统开关设计;程辉;《矿产勘查》;20141130;第5卷(第6期);全文 * |
| 高密度电阻率成像法在水文地质领域中的应用;姜振蛟;《水文地质工程地质》;20100331;第37卷(第2期);全文 * |
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