CN111105599A - Automatic early warning monitoring device system for underground collapse of urban road - Google Patents
Automatic early warning monitoring device system for underground collapse of urban road Download PDFInfo
- Publication number
- CN111105599A CN111105599A CN201911330476.0A CN201911330476A CN111105599A CN 111105599 A CN111105599 A CN 111105599A CN 201911330476 A CN201911330476 A CN 201911330476A CN 111105599 A CN111105599 A CN 111105599A
- Authority
- CN
- China
- Prior art keywords
- early warning
- underground
- main body
- collapse
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
-
- 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
- G01B21/02—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 length, width, or thickness
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B31/00—Predictive alarm systems characterised by extrapolation or other computation using updated historic data
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses an automatic early warning and monitoring device system for underground collapse of town roads, belonging to a road geological disaster monitoring technology; the technical scheme is characterized by comprising an underground early warning device and an above-ground early warning information receiver; the side wall of the cavity in the main body is fixedly connected with a signal transmission module, a displacement sensor, a power supply and a power switch which are connected in series through a lead; a horizontal cross shaft is arranged in the sealed cavity, two ends of the cross shaft are rotatably connected with the inner wall of the cavity through bearings, and a displacement line is wound on the cross shaft; the holding tank has been seted up to the lower extreme of main part, is equipped with the pituitary that falls in the holding tank, and the one end and the switch of displacement line are connected, and the other one end of displacement line gets into in the holding tank and fall pituitary fixed connection, and displacement sensor is close to the displacement line setting. The invention solves the problem that the conventional monitoring technology is not suitable for directly monitoring the urban road underground collapse, and achieves the effect of early warning before the road surface collapse is formed.
Description
Technical Field
The invention relates to a road geological disaster monitoring technology, in particular to an automatic early warning and monitoring device system for urban road underground collapse.
Background
With the continuous promotion of urbanization in China, the urban road is influenced by various engineering constructions of cities, particularly the rush hour of urban rail transit construction, underground complex underground pipelines of urban roads and frequent collapse of the urban roads cause great loss to road traffic and lives and properties of people, and the urban roads have the characteristics of concealment, burst, high destructiveness and difficulty in monitoring due to the structural characteristics of the urban roads.
Referring to the chinese patent invention with the publication number CN103558639B, a method for monitoring ground collapse is disclosed, in which an induction ring and a magnetic sensor are sequentially hung in a monitoring hole, when a ground collapse disaster occurs, the monitoring hole is damaged, the induction ring loses support and falls, during the falling process, a permanent magnet arranged on the induction ring overlaps with a detection region of the magnetic sensor, and after the falling action of the induction ring is sensed by the magnetic sensor, the occurrence of the ground collapse disaster can be known.
In the monitoring process of the technology, holes need to be drilled on the road, so that a monitoring hole is formed, the hole opening can be only sealed at the later stage of the monitoring hole, although a hole exists in the structural layer of the road, the monitoring hole is not easy to damage due to the fact that the road structural layer has the characteristic of certain rigidity, and therefore the conventional monitoring technology is not suitable for directly monitoring the underground collapse of the urban road and cannot give early warning.
Disclosure of Invention
The invention aims to provide an automatic early warning and monitoring device system for urban road underground collapse, which has the characteristics of directly monitoring urban road underground collapse and early warning before the road surface collapse is formed.
The above object of the present invention is achieved by the following technical solutions: an automatic early warning and monitoring device system for urban road underground collapse comprises an underground early warning device and an aboveground early warning information receiver;
the underground early warning device comprises a cylindrical main body, wherein a sealed cavity is formed in the main body, and the cavity is arranged close to the upper part of the main body;
the side wall of the cavity is fixedly connected with a signal transmission module, a displacement sensor, a power supply and a power switch which are connected together in series through a lead;
a horizontal cross shaft is arranged in the sealed cavity, two ends of the cross shaft are rotatably connected with the inner wall of the cavity through bearings, and a displacement line is wound on the cross shaft;
the lower end of the main body is provided with an accommodating groove, a pituitary body is arranged in the accommodating groove, one end of the displacement line is connected with the power switch, the other end of the displacement line enters the accommodating groove and is fixedly connected with the pituitary body, and the displacement sensor is arranged close to the displacement line;
the transverse shaft is fixedly connected with a pressing plate, and one end of the pressing plate, which is far away from the transverse shaft, can press the power switch;
the underground early warning devices are provided with a plurality of numbers, each underground early warning device is provided with independent serial number information, the serial number information is stored in the signal transmission module, and the underground early warning devices can be wirelessly communicated with the overground early warning information receiver at the same time.
By adopting the technical scheme, the lower end of the main body is in contact with the soil layer below the road structure layer, and the main body can be poured together with the road, so that the influence on the road strength is reduced, the collapse is generally generated from the soil layer below the road firstly, so that the dropping body is in contact with the soil layer, when the soil layer collapses, the dropping body can rapidly descend, and the dropping body descends to simultaneously drive the transverse shaft to rotate, and further the displacement line moves; meanwhile, the pressing plate on the cross shaft can apply force to the power switch, the power switch is closed, the displacement distance of the displacement line is measured by the displacement sensor, the signal transmission module transmits measured data to the ground early warning receiver, information of soil layer subsidence below a road can be received in time, and the subsided soil layer is monitored conveniently.
The invention is further configured to: the top surface fixedly connected with of holding tank has a plurality of springs, the lower extreme of spring and the upper surface butt that falls the pituitary.
Through adopting above-mentioned technical scheme, the spring can exert thrust to the pituitary that falls, and when the soil layer of road below sinks, the spring can make the faster production of the pituitary that falls fall, also can avoid the pituitary that falls because the soil layer sinks irregular card in the holding tank, and then can be accurate monitor the ground sinks.
The invention is further configured to: and a lubricant is coated on the circumferential surface of the dropping body.
Through adopting above-mentioned technical scheme, emollient can reduce the friction between the pituitary and the holding tank lateral wall that falls, and then can make the better production of the pituitary that falls fall.
The invention is further configured to: the upper surface of the main body is fixedly connected with a fixing rod.
Through adopting above-mentioned technical scheme, the dead lever can go deep into the concrete, and then increases the frictional force between main part and the road, makes better and road connection one-piece entity of main part, reduces the influence that causes road strength.
The invention is further configured to: the upper end of the fixed rod is fixedly connected with a cross rod.
Through adopting above-mentioned technical scheme, the horizontal pole can increase the connectivity between dead lever and the road, so can further increase the stability that main part and road are connected, make the road that underground early warning device can be better connect into a whole.
The invention is further configured to: the top surface of the cavity is fixedly connected with a support frame, the support frame is rotatably connected with a winding roller through a bearing, and one end, far away from the dropping body, of the displacement line is wound on the winding roller.
Through adopting above-mentioned technical scheme, the displacement line leaves the surplus, makes things convenient for displacement sensor to monitor the removal of counterpointing the displacement line, and the wind-up roll can carry out the rolling to the displacement line, avoids the displacement line to entangle together, can make displacement sensor better move the displacement line and measure, improves the measuring accuracy.
The invention is further configured to: the steel pipe is arranged in the main body, the steel pipe penetrates through the upper end and the lower end of the main body and the dropping body, and the steel pipe can enable a steel bar for ground surface monitoring to penetrate through the main body.
Through adopting above-mentioned technical scheme, can directly utilize the reinforcing bar of installation underground early warning device's cavity direct mount earth's surface monitoring usefulness, need not extra brill and get the monitoring hole to reduce the destruction that causes the road.
The invention is further configured to: the main body shell is made of hard, corrosion-resistant and smooth PVC materials.
Through adopting above-mentioned technical scheme, do not adopt metal casing, can avoid the influence that causes the signal transmission module, can also reduce the influence that the underground environment caused.
In conclusion, the invention has the following beneficial effects:
1. the automatic early warning and monitoring device system for the urban road underground collapse can accurately and timely measure the size and the position of a cavity caused by the underground collapse, and is convenient for subsequent treatment;
2. the main body can be integrated with a road, so that damage to the road is reduced, influence on the strength of the road is reduced, and potential safety hazards are reduced;
3. the main body shell is made of hard, corrosion-resistant and smooth PVC materials, metal materials influencing signal transmission are not applied, and the electronic element is in a sealed state, so that the influence of underground environment is small, and the influence of vibration of vehicles from the ground surface can be reduced.
Drawings
FIG. 1 is an overall configuration diagram of an above-ground warning information receiver and an underground warning device according to a first embodiment;
FIG. 2 is a sectional view showing the internal structure of the cavity in the first embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a cross-sectional view of a steel pipe according to the second embodiment.
In the figure, 1, a ground early warning information receiver; 2. an underground early warning device; 21. a main body; 211. fixing the rod; 212. a cross bar; 22. a cavity; 23. a signal transmission module; 24. a displacement sensor; 25. a power source; 26. a power switch; 27. a horizontal axis; 271. a pressing plate; 272. chamfering; 28. accommodating grooves; 29. a support frame; 291. a wind-up roll; 3. dropping pituitary; 31. a displacement line; 32. a spring; 4. and (5) steel pipes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows: an automatic early warning and monitoring device system for urban road underground collapse is shown in figure 1 and comprises an aboveground early warning information receiver 1 and an underground early warning device 2; underground early warning device 2 locates the below of road structure layer, and early warning information receiver 1 on the ground passes through wireless connection with underground early warning device 2, and when the road produces the collapse underground, underground early warning device 2 automatic start will collapse the information transfer for early warning information receiver 1 on the ground to can be to the information real time monitoring that collapses of road.
As shown in fig. 2 and 3, the underground early warning device 2 includes a cylindrical main body 21 and a cavity 22 opened inside the main body 21, wherein the cavity 22 is located at the upper half part of the main body 21; a signal transmission module 23 (the model can be selected to be GDKJ-1), a displacement sensor 24 (the model can be selected to be Milan MPS-M), a power supply 25 and a power switch 26 are fixedly connected on the inner wall of the cavity 22 and are connected in series through leads; a transverse shaft 27 is further arranged in the cavity 22, and two ends of the transverse shaft 27 are rotatably connected with the side wall of the cavity 22 through bearings, so that the transverse shaft 27 can rotate along the axis of the transverse shaft 27; the lower end of the main body 21 is provided with an accommodating groove 28, the dropping body 3 is arranged in the accommodating groove 28, the upper surface of the dropping body 3 is fixedly connected with a displacement line 31, the displacement line 31 penetrates through the top surface of the accommodating groove 28, enters the cavity 22 and then is uniformly wound on a transverse shaft 27, a pressing plate 271 is fixedly connected to the transverse shaft 27, and the pressing plate 271 can press the power switch 26; the underground early warning device 2 is arranged in a roadbed layer of a road, the lower end of the hypophysis body 3 and the lower end of the main body 21 are positioned in an agreed plane, and the lower end of the hypophysis body 3 is in contact with a soil layer below the road in a fitting manner; when the underground collapse occurs, because the road base layer has certain rigidity, the general collapse occurs in the soil layer below the road base layer, when the soil layer is found to be collapsed, the dropping body 3 loses support under the self gravity to drop, and then the displacement line 31 is driven to move, the displacement line 31 moves to enable the displacement line 31 on the transverse shaft 27 to be wound at loose sides, and meanwhile, the pressing plate 271 can press the power switch 26 to enable the power switch 26 to be closed; further electrifying the displacement sensor 24, further monitoring the moving distance of the displacement line 31 by the displacement sensor 24, thereby obtaining the depth of the collapse cavity, and transmitting information by the wireless signal transmission module 23, thereby realizing the purpose of early warning of collapse; the phenomenon that the road is deformed due to collapse is prevented, and traffic accidents are avoided; the power switch 26 is provided to make the sensor and the wireless signal transmission module 23 in a dormant state in a normal state, so as to reduce the consumption of the power supply 25, thereby prolonging the service life of the underground early warning device 2.
As shown in fig. 3, a chamfer 272 is formed on the side wall of the pressing plate 271 away from the lateral shaft 27 and close to the power switch 26; after pressing board 271 to switch 26, switch 26 no longer contacts with pressing board 271, avoids causing the interference to the rotation of pressing board 271, and chamfer 272 can reduce and press board 271 and switch 26 probability of bumping, avoids pressing board 271 to cause switch 26 to open, causes the influence to detection device's measuring accuracy.
As shown in fig. 2, a spring 32 is disposed at the upper end of the dropping body 3, the upper end of the spring 32 is fixedly connected with the top surface of the receiving groove 28, the lower end of the spring 32 is abutted against the upper surface of the dropping body 3, when the ground is collapsed, the spring 32 can apply a pushing force to the dropping body 3, so that the dropping body 3 can be smoothly dropped, and a layer of lubricant is further coated on the circumferential surface of the dropping body 3, so that the dropping body 3 can be more smoothly dropped.
Underground early warning device 2 buries one underground at every certain distance, a plurality of underground early warning device 2 and early warning information receiver 1 on the ground form early warning monitoring network, and all have an independent serial number on every underground early warning device 2, serial number information stores in wireless signal transmission module 23, wireless signal transmission module 23 can take person's serial number information to transmit when carrying out information transfer, thereby make the position of underground early warning device 2 that early warning information receiver 1 can accurate quick location send signal on the ground, and then can be faster fix a position the position of collapsing and restore.
As shown in fig. 1 and 2, the upper surface of the main body 21 is further fixedly connected with a fixing rod 211, and the upper end of the fixing rod 211 is fixedly connected with a cross bar 212; when installation underground early warning device 2, need drill out the monitoring hole on the road, the size in monitoring hole and main part 21 is the same basically, can conveniently install underground early warning device 2 into monitoring hole through dead lever 211, and when backfilling concrete for the monitoring hole, dead lever 211 and horizontal pole 212 can increase the connectivity of underground early warning device 2 and road basic unit, make underground early warning device 2's main part 21 can form a whole with the road, can not construct to destroy and influence road safety to the current knot of road, when the soil layer discovery sinks, main part 21 can not produce the tenesmus, only the generation of hypophysis body 3 is tenesmus, can be better monitor the hole of collapsing.
As shown in fig. 3, the top surface of the cavity 22 is further fixedly connected with a support frame 29, the support frame 29 is rotatably connected with a wind-up roll 291 through a bearing, and one end of the displacement line 31, which is far away from the dropping body 3, is wound on the wind-up roll 291; the winding roller 291 winds the redundant part of the displacement wire 31, so that the surplus part reserved by the displacement wire 31 is prevented from being entangled, the displacement sensor 24 is convenient to measure the moving distance of the displacement wire 31, the winding roller 291 can rotate, and the expansion of the displacement wire 31 cannot be influenced.
Example two: as shown in fig. 4, monitoring holes need to be drilled in a road for monitoring the ground surface in conventional urban engineering, a twisted steel bar penetrates through the monitoring holes to the underground of the road, concrete is poured and filled, the twisted steel bar and the road form a whole, deformation of the ground surface of the road is regularly observed through a total station or a level, but the drilled monitoring holes can damage the road, so that a vertical steel pipe 4 is inserted in a main body 21, the steel pipe 4 is positioned at the axis of the main body 21, the steel pipe 4 penetrates through the main body 21, a cavity 22 and a dropping body 3, the steel pipe 4 can be inserted through the steel bar, and thus, additional drilling of the monitoring holes is not needed, and damage to the road is reduced; the two ends of the cross shaft 27 are respectively and rotatably connected with the side wall of the cavity 22 and the side wall of the steel tube 4 through bearings, and the cross shaft 27 does not penetrate through the steel tube 4, so that the influence on the insertion of the steel bar is avoided.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides an automatic early warning monitoring device system that town road underground sinks which characterized in that: comprises an underground early warning device (2) and an above-ground early warning information receiver (1);
the underground early warning device (2) comprises a cylindrical main body (21), a sealed cavity (22) is formed in the main body (21), and the cavity (22) is arranged close to the upper part of the main body (21);
a signal transmission module (23), a displacement sensor (24), a power supply (25) and a power switch (26) are fixedly connected to the side wall of the cavity (22) and are connected in series through a lead;
a horizontal transverse shaft (27) is arranged in the sealed cavity (22), two ends of the transverse shaft (27) are rotatably connected with the inner wall of the cavity (22) through bearings, and a displacement line (31) is wound on the transverse shaft (27);
an accommodating groove (28) is formed in the lower end of the main body (21), a dropping body (3) is arranged in the accommodating groove (28), one end of a displacement line (31) enters the accommodating groove (28) and is fixedly connected with the dropping body (3), and a displacement sensor (24) is arranged close to the displacement line (31);
a pressing plate (271) is fixedly connected to the transverse shaft (27), and one end, far away from the transverse shaft (27), of the pressing plate (271) can press the power switch (26);
underground early warning device (2) are provided with a plurality ofly, and every underground early warning device (2) have independent serial number information, and serial number information stores in signal transmission module (23), and a plurality of underground early warning device (2) can be simultaneously with early warning information receiver (1) wireless intercommunication on the ground.
2. The automatic early warning and monitoring device system for the underground collapse of the town road as claimed in claim 1, wherein: the top surface of the accommodating groove (28) is fixedly connected with a plurality of springs (32), and the lower ends of the springs (32) are abutted to the upper surface of the dropping body (3).
3. The automatic early warning and monitoring device system for the underground collapse of the town road as claimed in claim 1, wherein: the circumferential surface of the pituitary body (3) is coated with a lubricant.
4. The automatic early warning and monitoring device system for the underground collapse of the town road as claimed in claim 1, wherein: the upper surface of the main body (21) is fixedly connected with a fixing rod (211).
5. The automatic early warning and monitoring device system for the underground collapse of the town road as claimed in claim 4, wherein: the upper end of the fixed rod (211) is also fixedly connected with a cross rod (212).
6. The automatic early warning and monitoring device system for the underground collapse of the town road as claimed in claim 1, wherein: the top surface of the cavity (22) is also fixedly connected with a support frame (29), the support frame (29) is rotatably connected with a winding roller (291) through a bearing, and one end, far away from the dropping body (3), of the displacement line (31) is wound on the winding roller (291).
7. The automatic early warning and monitoring device system for the underground collapse of the town road as claimed in claim 1, wherein: the steel pipe (4) is arranged in the main body (21), the steel pipe (4) penetrates through the upper end and the lower end of the main body (21) and the dropping body (3), and the steel pipe (4) can enable a steel bar for ground surface monitoring to penetrate through the main body (21).
8. The automatic early warning and monitoring device system for the underground collapse of the town road as claimed in claim 1, wherein: the shell of the main body (21) is made of hard, corrosion-resistant and smooth PVC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911330476.0A CN111105599A (en) | 2019-12-20 | 2019-12-20 | Automatic early warning monitoring device system for underground collapse of urban road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911330476.0A CN111105599A (en) | 2019-12-20 | 2019-12-20 | Automatic early warning monitoring device system for underground collapse of urban road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111105599A true CN111105599A (en) | 2020-05-05 |
Family
ID=70422768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911330476.0A Pending CN111105599A (en) | 2019-12-20 | 2019-12-20 | Automatic early warning monitoring device system for underground collapse of urban road |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111105599A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393707A (en) * | 2020-11-17 | 2021-02-23 | 中国地质科学院岩溶地质研究所 | Shallow soil cave recognition early warning device and using method thereof |
| CN112885056A (en) * | 2021-01-11 | 2021-06-01 | 湖南联智科技股份有限公司 | Automatic monitoring alarm device for gravity type underground cavity |
| CN114061535A (en) * | 2021-11-15 | 2022-02-18 | 北京环安工程检测有限责任公司 | Subway tunnel automatic deformation monitoring method and device based on MEMS |
| CN114067543A (en) * | 2021-11-01 | 2022-02-18 | 上海市城市建设设计研究总院（集团）有限公司 | Remote sensing and early warning system for urban road subgrade settlement |
| CN114459703A (en) * | 2021-12-29 | 2022-05-10 | 北京科技大学 | System and method for monitoring capture of water delivery leakage area and water and soil loss to air in pressurized pipeline |
-
2019
- 2019-12-20 CN CN201911330476.0A patent/CN111105599A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393707A (en) * | 2020-11-17 | 2021-02-23 | 中国地质科学院岩溶地质研究所 | Shallow soil cave recognition early warning device and using method thereof |
| CN112885056A (en) * | 2021-01-11 | 2021-06-01 | 湖南联智科技股份有限公司 | Automatic monitoring alarm device for gravity type underground cavity |
| CN114067543A (en) * | 2021-11-01 | 2022-02-18 | 上海市城市建设设计研究总院（集团）有限公司 | Remote sensing and early warning system for urban road subgrade settlement |
| CN114061535A (en) * | 2021-11-15 | 2022-02-18 | 北京环安工程检测有限责任公司 | Subway tunnel automatic deformation monitoring method and device based on MEMS |
| CN114459703A (en) * | 2021-12-29 | 2022-05-10 | 北京科技大学 | System and method for monitoring capture of water delivery leakage area and water and soil loss to air in pressurized pipeline |
| CN114459703B (en) * | 2021-12-29 | 2022-07-22 | 北京科技大学 | System and method for monitoring capture of water delivery leakage area and soil erosion to empty of pressurized pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111105599A (en) | Automatic early warning monitoring device system for underground collapse of urban road | |
| CN210804702U (en) | Automatic early warning monitoring device system for underground collapse of urban road | |
| Bennett et al. | Wireless sensor network for monitoring transport tunnels | |
| CN109115145B (en) | A kind of embedded landslide depth large deformation monitoring device and method | |
| CN110159250B (en) | Geotechnical engineering investigation informationized integrated supervision equipment | |
| CN105804127B (en) | Automated intelligent pit inclinometer system | |
| CN103727911A (en) | Assembled deep displacement monitoring device and system based on MEMS array | |
| CN101435689A (en) | Method and instrument for measuring underground displacement of integrated sensor based on underground displacement | |
| CN107067656A (en) | A kind of geological disaster monitoring system | |
| CN106887117A (en) | A kind of debris flow monitoring pre-warning system | |
| CN110345909A (en) | A kind of full-automatic mechanical-type intelligence laminated settlement meter | |
| CN104913818A (en) | Deformation anchor rod/ anchor cable monitor, monitoring system and monitoring method | |
| CN117523787A (en) | Landslide safety monitoring system and early warning method thereof | |
| CN209894167U (en) | Tunnel roof surrounding rock displacement measurement device | |
| CN202693198U (en) | Underground water pressure detection system | |
| US8773287B2 (en) | Device and method for traffic surveillance | |
| CN204807126U (en) | Stock anchor rope monitoring system warp and monitor thereof | |
| CN202360083U (en) | Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well | |
| CN113789820A (en) | Pile foundation displacement auxiliary detection device for building engineering technology | |
| CN214656906U (en) | Inclinometer fixing device for foundation pit monitoring | |
| CN217690307U (en) | Roadbed collapse early warning system | |
| CN219772935U (en) | Road collapse wireless monitoring device with osmotic pressure monitoring structure | |
| KR102454667B1 (en) | system for predicting sink hole using bead | |
| CN101614518A (en) | Method for measuring length of reinforcing cage of concrete poured pile by potentials | |
| CN211080183U (en) | Railway roadbed monitoring system that sinks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |