CN103558639A - Ground surface collapse monitoring device and method - Google Patents
Ground surface collapse monitoring device and method Download PDFInfo
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- CN103558639A CN103558639A CN201310541613.1A CN201310541613A CN103558639A CN 103558639 A CN103558639 A CN 103558639A CN 201310541613 A CN201310541613 A CN 201310541613A CN 103558639 A CN103558639 A CN 103558639A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 55
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 14
- 239000002689 soil Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Abstract
The invention discloses a ground surface collapse monitoring method, an induction ring and a magnetic sensor are sequentially hoisted in a monitoring cave, after a ground surface collapse disaster appears, the monitoring cave is damaged, the induction ring loses supporting and falls off, in the falling process, a permanent magnet arranged on the induction ring overlaps a detection area of the magnetic sensor, and after the magnetic sensor induces the falling motion of the induction ring, a user can know that the ground surface collapse disaster occurs already. The invention further provides a ground surface collapse monitoring device which can achieve the monitoring method. The ground surface collapse monitoring device and method have the advantages that needed hardware is simple, the device is convenient to arrange, data processing is easy and convenient, and monitoring results are accurate and reliable.
Description
Technical field
The present invention relates to a kind of monitoring technology for geological hazards, relate in particular to a kind of surface collapse monitoring device and monitoring method.
Background technology
A lot of surface collapse disasters all can occur every year throughout the country, and particularly in karst area, the relevant disaster of subsiding frequently occurs especially, to people life property safety, has caused heavy losses; Because karst soil cave is all at below ground, and buried depth is different, has disguise, to disaster monitoring, has brought great difficulty.
At present, monitoring means for surface collapse disaster mainly contains geological radar (GPR), TDR(BOTDR) technology and water (gas) pressure monitoring, the operating cost of geological radar and TDR is very high, be not suitable for promoting on a large scale, water (gas) pressure monitoring is difficult to again draw conclusion comparatively accurately, and three kinds of methods also all exist the poor defect of simple operation.
Summary of the invention
For the problem in background technology, the present invention proposes a kind of surface collapse monitoring method, its scheme is: related hardware has: support, vertical heavy body, cable, processing module, Magnetic Sensor (being Hall element), the communications cable and inductance loop; Wherein, support, hang down heavy body and cable form the supporting construction of monitoring device, and support hangs from above in monitoring hole for the heavy body that will hang down, hang down to weighing body and be used for cable tensioning, and cable is used for arranging Magnetic Sensor; Magnetic Sensor, the communications cable and inductance loop form the transducing part of monitoring device, and inductance loop is for inductively qualitative change, and Magnetic Sensor is for the state of induction monitoring device, and the communications cable transfers to processing module for the signal that Magnetic Sensor is collected; The concrete operations that a plurality of devices of application of aforementioned are monitored are as follows:
1) in monitored area boring, form the monitoring hole vertical with horizontal direction;
2) support is fixed on the openings position place in monitoring hole, hangs down and by cable, is fixedly connected with between heavy body and support, and the heavy body that hangs down hangs from above in monitoring hole; Magnetic Sensor is fixed on cable middle part, between Magnetic Sensor and processing module, by the communications cable, is electrically connected;
Monitoring under normal circumstances hole is column structure, and inductance loop is the hole wall clamping with monitoring hole by elastic mechanism, and the position of inductance loop, between Magnetic Sensor and support, is provided with permanent magnet on inductance loop;
3) after Study on Soil Collapse, the inwall in monitoring hole is destroyed, and elastic mechanism loses support portion, and inductance loop is to the bottom landing of monitoring hole; In inductance loop landing process, the magnetic line of force that permanent magnet sends and the search coverage of Magnetic Sensor overlap, processing module perceives landing of inductance loop by Magnetic Sensor, by arranging highly in advance of inductance loop demarcated, can know that the degree of depth of subsiding appears in the soil body.
Preceding method is easy to implement, and required hardware unit is very common thing, and inductance loop qualitative changeization is very responsive over the ground, monitoring result is accurate.
Surface collapse disaster is generally from compare Shen position, earth's surface to earth's surface future development, this feature based on surface collapse disaster, quantity that also can inductance loop is set to a plurality of, a plurality of inductance loops axially set gradually along monitoring hole, by a plurality of inductance loops being set and the distributed depth of a plurality of inductance loops being demarcated in advance, when surface collapse disaster has influence on the monitoring hole of inductance loop position, inductance loop starts landing, processing module senses that to Magnetic Sensor the number of times in magnetic field counts, can know and have how many inductance loop landings, this not only can monitoring surface collapse disaster, can also monitor the development progress of surface collapse disaster, and can work out accordingly multistage early warning mechanism, can judge by the quantity of monitoring inductance loop landing the development degree of depth of surface collapse, if the degree of depth of surface collapse is also not enough to table safety threateningly, only need to pay close attention to, thereby further improve the accuracy of disaster alarm.
On aforesaid monitoring method basis, the invention allows for a kind of surface collapse monitoring device, its structure is: described surface collapse monitoring device is comprised of support, hang down heavy body, cable, processing module, Magnetic Sensor, the communications cable and inductance loop;
Cable upper end is fixedly connected with support, and cable lower end is fixedly connected with the heavy body that hangs down; Magnetic Sensor is fixed on cable middle part, between Magnetic Sensor and processing module, by the communications cable, is electrically connected; Inductance loop is arranged at the position between cable upper bracket and Magnetic Sensor, and inductance loop can slide along cable;
Described inductance loop is comprised of urceolus, inner core, permanent magnet, a plurality of card arm and a plurality of spring; Described urceolus and inner core are the cylindrical structure of both ends open, and inner core is socketed in urceolus, between urceolus and inner core, by tie-beam, fix; On inner core inwall, be provided with mounting groove, permanent magnet is embedded in mounting groove; A plurality of card arms and outer drum outer wall are rotationally connected, and card arm can be along urceolus axial rotation; The all corresponding spring of each card arm, one end of spring is connected with card arm middle part, and the other end of spring is connected with outer drum outer wall; During state of nature, card arm outer end is to urceolus surfaces came close under the pulling force effect of spring, and the outer end of a plurality of card arms is towards identical; While laying inductance loop, firmly rotate card arm, card arm outer end is rotated towards the direction with spring contraction opposite direction, and the periphery that makes card arm is less than the diameter in monitoring hole, then card arm is transported in monitoring hole after correspondence position, unclamp card arm, card arm just under spring action, rotates backward and the hole wall in final monitored hole blocks, thereby completes the laying of inductance loop.
Cable passes from the inner core endoporus of inductance loop, between cable and inner core, leaves gap.
Modular construction related in aforementioned structure is simple, setting operation is installed easy, and test result accurately and reliably.
Preferably, described urceolus and inner core coaxially arrange; The quantity of described tie-beam is 3 or 4, and each tie-beam is circumferentially uniformly distributed along urceolus.In addition, urceolus and inner core role in this inductance loop is support card arm and permanent magnet, and this is mainly the length (also improving the dirigibility of card arm) of considering to save cost and reducing inductance loop deadweight and reduce card arm; Again, why inductance loop of the present invention adopts the Another reason of the loop configuration body being comprised of urceolus and inner core to be: ring texture can (can arrange greatlyr by the internal diameter of the heavy body that hangs down with block structure, the heavy body that can be hung down after inductance loop landing be caught) coordinate, avoid inductance loop landing to be difficult to take out after monitoring at the bottom of hole.
Identical with the reason that a plurality of inductance loops are set in aforementioned monitoring method, while specifically applying, also a plurality of inductance loops can be set, a plurality of inductance loops are axially arranged in turn along cable.
Preferably, the quantity of described card arm is 8; Wherein 4 card arms are designated as the first card arm group, 4 card arms contour settings urceolus is axial in the first card arm group, other 4 card arms are designated as the second card arm group, 4 card arms contour settings urceolus is axial in the second card arm group, and arranging of the first card arm group and the second card arm group is highly different.
Preferably, the circumferential position of 4 card arms in the first card arm group is circumferentially uniformly distributed along urceolus; The circumferential position of 4 card arms in the second card arm group is circumferentially uniformly distributed along urceolus.
Preferably, the circumferential position of 4 card arms in the first card arm group is corresponding one by one with 4 circumferential positions that block arms in the second card arm group.
Preferably, described support adopts the disc-shaped structure body with mesopore.While adopting discoidal support, can make the external diameter of support be greater than monitoring hole dia, thereby make bracket clamp be connected on place, hole, hole all can also be sealed, avoid foreign matter to fall in monitoring hole simultaneously.
Preferably, described vertical heavy body diameter is greater than inner core internal diameter.After adopting this to improve, the heavy body that hangs down just can be caught the inductance loop of landing, is convenient to take out inductance loop, to reuse.
Useful technique effect of the present invention is: required hardware is simple, and device is laid convenient, and data processing is easy, and monitoring result accurately and reliably.
Accompanying drawing explanation
Fig. 1, use view of the present invention;
Fig. 2, inductance loop cross sectional representation;
Fig. 3, inductance loop shaft section schematic diagram;
In figure, the corresponding parts of each mark are respectively: support A, the heavy body B that hangs down, cable C, processing module D, Magnetic Sensor E, inductance loop F, urceolus 1, inner core 2, permanent magnet 3, card arm 5, spring 6.
Embodiment
A monitoring device, its structure is: described surface collapse monitoring device is comprised of support A, hang down heavy body B, cable C, processing module D, Magnetic Sensor E, the communications cable and inductance loop F;
Cable C upper end is fixedly connected with support A, and cable C lower end is fixedly connected with the heavy body B that hangs down; Magnetic Sensor E is fixed on cable C middle part, between Magnetic Sensor E and processing module D, by the communications cable, is electrically connected; Inductance loop F is arranged at the position between cable C upper bracket A and Magnetic Sensor E, and inductance loop F can slide along cable C;
Described inductance loop F is comprised of urceolus 1, inner core 2, permanent magnet 3, a plurality of card arm 5 and a plurality of spring 6; Described urceolus 1 and inner core 2 are the cylindrical structure of both ends open, and inner core 2 is socketed in urceolus 1, between urceolus 1 and inner core 2, by tie-beam, fix; On inner core 2 inwalls, be provided with mounting groove, permanent magnet 3 is embedded in mounting groove; A plurality of card arms 5 are rotationally connected with urceolus 1 outer wall, and card arm 5 can be along urceolus 1 axial rotation; The all corresponding spring 6 of each card arm 5, one end of spring 6 is connected with card arm 5 middle parts, and the other end of spring 6 is connected with urceolus 1 outer wall; During state of nature, card arm 5 outer ends are to urceolus 1 surfaces came close under the pulling force effect of spring 6, and the outer end of a plurality of card arms 5 is towards identical;
Cable C passes from inner core 2 endoporus of inductance loop F, between cable C and inner core 2, leaves gap.
Further, described urceolus 1 and inner core 2 coaxially arrange; The quantity of described tie-beam is 3 or 4, and each tie-beam is circumferentially uniformly distributed along urceolus 1.
Further, the quantity of described inductance loop F is a plurality of, and a plurality of inductance loop F axially arrange in turn along cable C.
Further, the quantity of described card arm 5 is 8; Wherein 4 card arms 5 are designated as the first card arm group, 4 card arms 5 contour setting urceolus 1 is axial in the first card arm group, other 4 card arms 5 are designated as the second card arm group, 4 card arms 5 contour setting urceolus 1 is axial in the second card arm group, arranging of the first card arm group and the second card arm group is highly different.
Further, the circumferential position of 4 card arms 5 in the first card arm group is circumferentially uniformly distributed along urceolus 1; The circumferential position of 4 card arms 5 in the second card arm group is circumferentially uniformly distributed along urceolus 1.
Further, the circumferential position of 4 card arms 5 in the first card arm group is corresponding one by one with 4 circumferential positions that block arms 5 in the second card arm group.
Further, described support A adopts the disc-shaped structure body with mesopore.
Further, the described heavy body B external diameter that hangs down is greater than inner core 2 internal diameters.
A monitoring method, related hardware has: support A, vertical heavy body B, cable C, processing module D, Magnetic Sensor E, the communications cable and inductance loop F;
Being operating as of described surface collapse monitoring method:
1) in monitored area boring, form the monitoring hole vertical with horizontal direction;
2) support A is fixed on the openings position place in monitoring hole, hangs down and by cable C, is fixedly connected with between heavy body B and support A, and the heavy body B that hangs down hangs from above in monitoring hole; Magnetic Sensor E is fixed on cable C middle part, between Magnetic Sensor E and processing module D, by the communications cable, is electrically connected;
Monitoring under normal circumstances hole is column structure, and inductance loop F is the hole wall clamping with monitoring hole by elastic mechanism, and the position of inductance loop F, between Magnetic Sensor E and support A, is provided with permanent magnet 3 on inductance loop F;
3) after Study on Soil Collapse, the inwall in monitoring hole is destroyed, and elastic mechanism loses support portion, and inductance loop F is to the bottom landing of monitoring hole; In inductance loop F landing process, the search coverage of the magnetic line of force that permanent magnet 3 sends and Magnetic Sensor E overlaps, processing module D perceives landing of inductance loop F by Magnetic Sensor E, by arranging highly in advance of inductance loop F demarcated, can know that the degree of depth of subsiding appears in the soil body.
Further, the quantity of described inductance loop F is a plurality of, and a plurality of inductance loop F axially set gradually along monitoring hole.
Claims (10)
1. a surface collapse monitoring device, is characterized in that: described surface collapse monitoring device is comprised of support (A), hang down heavy body (B), cable (C), processing module (D), Magnetic Sensor (E), the communications cable and inductance loop (F);
Cable (C) upper end is fixedly connected with support (A), and cable (C) lower end is fixedly connected with the heavy body (B) that hangs down; Magnetic Sensor (E) is fixed on cable (C) middle part, between Magnetic Sensor (E) and processing module (D), by the communications cable, is electrically connected; Inductance loop (F) is arranged at the position between cable (C) upper bracket (A) and Magnetic Sensor (E), and inductance loop (F) can slide along cable (C);
Described inductance loop (F) is comprised of urceolus (1), inner core (2), permanent magnet (3), a plurality of card arm (5) and a plurality of spring (6); Described urceolus (1) and inner core (2) are the cylindrical structure of both ends open, and inner core (2) is socketed in urceolus (1), between urceolus (1) and inner core (2), by tie-beam, fix; On inner core (2) inwall, be provided with mounting groove, permanent magnet (3) is embedded in mounting groove; A plurality of card arms (5) are rotationally connected with urceolus (1) outer wall, and card arm (5) can be along urceolus (1) axial rotation; The all corresponding spring (6) of each card arm (5), one end of spring (6) is connected with card arm (5) middle part, and the other end of spring (6) is connected with urceolus (1) outer wall; During state of nature, card arm (5) outer end is to urceolus (1) surfaces came close under the pulling force effect of spring (6), and the outer end of a plurality of card arm (5) is towards identical;
Cable (C) passes from inner core (2) endoporus of inductance loop (F), between cable (C) and inner core (2), leaves gap.
2. surface collapse monitoring device according to claim 1, is characterized in that: described urceolus (1) and inner core (2) coaxially arrange; The quantity of described tie-beam is 3 or 4, and each tie-beam is circumferentially uniformly distributed along urceolus (1).
3. surface collapse monitoring device according to claim 2, is characterized in that: the quantity of described inductance loop (F) is a plurality of, and a plurality of inductance loops (F) are axially arranged in turn along cable (C).
4. surface collapse monitoring device according to claim 1, is characterized in that: the quantity of described card arm (5) is 8; Wherein 4 card arms (5) are designated as the first card arm group, 4 card arms (5) in the first card arm group are axially gone up contour setting at urceolus (1), other 4 card arms (5) are designated as the second card arm group, 4 card arms (5) in the second card arm group are axially gone up contour setting at urceolus (1), and arranging of the first card arm group and the second card arm group is highly different.
5. surface collapse monitoring device according to claim 4, is characterized in that: the circumferential position of 4 the card arms (5) in the first card arm group is circumferentially uniformly distributed along urceolus (1); The circumferential position of 4 the card arms (5) in the second card arm group is circumferentially uniformly distributed along urceolus (1).
6. surface collapse monitoring device according to claim 5, is characterized in that: the circumferential position of 4 the card arms (5) in the first card arm group is corresponding one by one with 4 circumferential positions that block arms (5) in the second card arm group.
7. surface collapse monitoring device according to claim 1, is characterized in that: described support (A) adopts the disc-shaped structure body with mesopore.
8. surface collapse monitoring device according to claim 1, is characterized in that: described vertical heavy body (B) external diameter is greater than inner core (2) internal diameter.
9. a surface collapse monitoring method, is characterized in that: related hardware has: support (A), vertical heavy body (B), cable (C), processing module (D), Magnetic Sensor (E), the communications cable and inductance loop (F);
Being operating as of described surface collapse monitoring method:
1) in monitored area boring, form the monitoring hole vertical with horizontal direction;
2) support (A) is fixed on the openings position place in monitoring hole, hangs down and by cable (C), is fixedly connected with between heavy body (B) and support (A), and the heavy body (B) that hangs down hangs from above in monitoring hole; Magnetic Sensor (E) is fixed on cable (C) middle part, between Magnetic Sensor (E) and processing module (D), by the communications cable, is electrically connected;
Monitoring under normal circumstances hole is column structure, and inductance loop (F) is the hole wall clamping with monitoring hole by elastic mechanism, and the position of inductance loop (F) is positioned between Magnetic Sensor (E) and support (A), is provided with permanent magnet (3) on inductance loop (F);
3) after Study on Soil Collapse, the inwall in monitoring hole is destroyed, and elastic mechanism loses support portion, and inductance loop (F) is to the bottom landing of monitoring hole; In inductance loop (F) landing process, the search coverage of the magnetic line of force that permanent magnet (3) sends and Magnetic Sensor (E) overlaps, processing module (D) perceives landing of inductance loop (F) by Magnetic Sensor (E), by arranging highly in advance of inductance loop (F) demarcated, can know that the degree of depth of subsiding appears in the soil body.
10. surface collapse monitoring method according to claim 9, is characterized in that: the quantity of described inductance loop (F) is a plurality of, and a plurality of inductance loops (F) axially set gradually along monitoring hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541613.1A CN103558639B (en) | 2013-11-05 | 2013-11-05 | Ground surface collapse monitoring device and method |
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| CN201310541613.1A CN103558639B (en) | 2013-11-05 | 2013-11-05 | Ground surface collapse monitoring device and method |
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| CN103558639B CN103558639B (en) | 2017-02-08 |
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| WO2018054107A1 (en) * | 2016-09-20 | 2018-03-29 | 中国电力科学研究院有限公司 | Soil layered-settlement magnet ring and soil layered-settlement monitoring device |
| WO2019114256A1 (en) * | 2017-12-15 | 2019-06-20 | 深圳大学 | Simple warning device for underground soil loss |
| CN112747793A (en) * | 2021-01-05 | 2021-05-04 | 房小夏 | Mine surface subsidence rock movement observation device |
| CN112885038A (en) * | 2020-12-31 | 2021-06-01 | 中铁十七局集团第三工程有限公司 | Ground early warning device and ground early warning system that sinks |
| CN116005525A (en) * | 2022-12-27 | 2023-04-25 | 苏交科集团股份有限公司 | Automatic monitoring and early warning device and early warning method for embedded road collapse |
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Inventor after: Chen Hongkai Inventor after: Zhou Xiaohan Inventor after: Liang Dan Inventor after: Dong Ping Inventor after: Tang Hongmei Inventor before: Chen Hongkai Inventor before: Dong Ping Inventor before: Tang Hongmei |
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Effective date of registration: 20160822 Address after: 400074 Chongqing Nan'an District University Avenue, No. 66 Applicant after: chongqing jiaotong university Address before: 400074 Institute of geotechnical engineering,, Nan'an District, Chongqing, Chongqing Jiaotong University Applicant before: Chen Hongkai Applicant before: Dong Ping Applicant before: Tang Hongmei |
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