CN-224230967-U - Earth's surface deformation monitoring device for geological disaster monitoring

CN224230967UCN 224230967 UCN224230967 UCN 224230967UCN-224230967-U

Abstract

The utility model relates to the technical field of ground surface deformation monitoring, in particular to a ground surface deformation monitoring device for monitoring geological disasters, which comprises a first fixing frame, a second fixing frame and a cable, wherein the cable is erected between the first fixing frame and the second fixing frame in a straight state, a plurality of monitoring units are arranged on the cable at intervals, each monitoring unit comprises a displacement sensor and a pressing piece, the pressing piece is connected with the cable through a traction rope, the displacement sensor is connected to the cable, and the traction rope of the displacement sensor is connected with the pressing piece. The utility model can more comprehensively capture the deformation difference of different areas of the side slope, more clearly identify whether the side slope has different sliding characteristics such as local sliding, integral translation or uneven settlement, provide richer and three-dimensional data support for comprehensively analyzing the stability of the side slope, and is beneficial to reducing the risk of misjudgment or missed judgment of disasters caused by information on one side.

Inventors

YU CHANGHENG
YUAN DEBAO
Zheng Majia
CHEN KANG
HE QINGLIN
LIU JINHUI
WANG KUNPENG

Assignees

四川省自然资源投资集团物探勘查院有限公司

Dates

Publication Date: 20260512
Application Date: 20260211

Claims (10)

1. The earth surface deformation monitoring device for geological disaster monitoring is characterized by comprising a first fixing frame, a second fixing frame and a cable, wherein the first fixing frame is arranged at the top of a slope, the second fixing frame is arranged at the bottom of the slope, the cable is erected between the first fixing frame and the second fixing frame in a straight state, and the cable is attached to the structural high point of the slope surface of the slope or is arranged at intervals with the structural high point of the slope surface of the slope; The cable is also provided with a plurality of monitoring units at intervals, the monitoring units comprise displacement sensors and pressing and falling pieces, the pressing and falling pieces are connected with the cable through pulling ropes, the length of each pulling rope is enough to enable the pressing and falling pieces to naturally fall to the slope of the slope, and the weight of each pressing and falling piece is enough to enable the pulling ropes to keep a straight state; The displacement sensor is connected to the cable, a stay wire of the displacement sensor is connected with the weight pressing piece, and the pulling force recovered by the traction of the displacement sensor by the stay wire is smaller than the gravity of the weight pressing piece.
2. The earth's surface deformation monitoring device for monitoring geological disasters according to claim 1, wherein when the falling member naturally falls to the slope surface of the slope, the stay wire of the displacement sensor is matched with the traction rope at an acute angle.
3. The earth's surface deformation monitoring device for geological disaster monitoring according to claim 2, wherein the weight is provided in a spherical structure.
4. A geological disaster monitoring device according to claim 3, wherein the pulling rope, the displacement sensor and the cable are detachably connected and matched.
5. The ground surface deformation monitoring device for geological disaster monitoring according to claim 1, wherein a tension sensor is further arranged on the first fixing frame, the cable is connected with the tension sensor, and the tension sensor is used for monitoring real-time tensioning force of the cable.
6. The earth's surface deformation monitoring device for geological disaster monitoring as set forth in any one of claims 1-5, wherein said cable is provided in a flat ribbon-like structure.
7. The earth surface deformation monitoring device for geological disaster monitoring as claimed in claim 6, the device is characterized in that the heights of the first fixing frame and the second fixing frame are adjustable.
8. The ground surface deformation monitoring device for geological disaster monitoring according to claim 7, wherein a winding drum is arranged on the second fixing frame, the cable is connected to the winding drum, and the winding drum is used for adjusting the tension degree of the cable in a straightened state.
9. The device for monitoring the deformation of the earth's surface for monitoring a geological disaster according to claim 5, wherein the first fixing frame and the second fixing frame are further provided with an alarm, the alarm is electrically connected with the tension sensor and the displacement sensor, and when any one of the data monitored by the displacement sensor and the tension sensor exceeds a preset threshold value, the alarm can emit a warning signal.
10. The earth's surface deformation monitoring device for geological disaster monitoring according to claim 9, wherein the alarm comprises a buzzer and a warning light.

Description

Earth's surface deformation monitoring device for geological disaster monitoring Technical Field The utility model relates to the technical field of earth surface deformation monitoring, in particular to an earth surface deformation monitoring device for monitoring geological disasters. Background Geological disasters, in particular slope instability, landslide and the like, seriously threaten the life and property safety of people and the safety of infrastructure. The method is used for monitoring the deformation of the surface of the side slope stably and reliably for a long time, and is a key technical means for early warning and preventing and controlling the disasters. At present, in the fields of slope engineering and geological disaster monitoring, a contact type mechanical displacement monitoring device is often adopted for directly measuring soil displacement. The stay wire type displacement sensor is widely applied monitoring equipment. The sensor body is fixed on a relatively stable datum point on the side slope, and the tail end of a telescopic stay wire is anchored on a potential unstable area of the side slope or a specific point needing to monitor displacement through an anchor rod. When the side slope soil body is displaced, the anchor rod is driven to move, so that the stay wire is pulled, and the sensor internal mechanism converts the physical length change into a measurable electrical signal, so that the condition of the soil body displacement change is reflected. However, the pull-wire displacement sensor commonly employed in the prior art is essentially a "point-type" monitoring device. The linear displacement of the soil mass at a single anchoring point in the distribution direction of the sensor stay wire can be obtained. The point data with single dimension is difficult to comprehensively reflect the integral deformation trend and sliding characteristics of the slope plane. Particularly for slopes with complex terrains or multiple sliding surfaces, the stability evaluation is carried out by relying on the isolated single-point data, and misjudgment on disaster evolution modes or missed judgment on key early warning signals are extremely easy to occur due to information one-sided. Therefore, when monitoring the displacement of the side slope soil body, how to acquire more comprehensive and multidimensional ground deformation information so as to improve the accuracy of geological disaster monitoring and early warning is a technical problem to be solved in the prior art. Disclosure of utility model The utility model aims at solving the problems of the prior art that a stay wire type displacement sensor is essentially a 'point type' monitoring device. The linear displacement of the soil mass at a single anchoring point in the distribution direction of the sensor stay wire can be obtained. The point data with single dimension is difficult to comprehensively reflect the integral deformation trend and sliding characteristics of the slope plane. In particular to a ground surface deformation monitoring device for monitoring geological disasters, which aims at solving the problems that the stability evaluation is carried out on slopes with complex terrains or multiple sliding surfaces, and misjudgment on disaster evolution modes or missed judgment on key early warning signals are easily caused by information on one side. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The earth surface deformation monitoring device for geological disaster monitoring comprises a first fixing frame, a second fixing frame and a cable, wherein the first fixing frame is arranged at the top of a slope, the second fixing frame is arranged at the bottom of the slope, the cable is erected between the first fixing frame and the second fixing frame in a straight state, and the cable is attached to the structural high point of the slope surface of the slope or is arranged at intervals with the structural high point of the slope surface of the slope; The cable is also provided with a plurality of monitoring units at intervals, the monitoring units comprise displacement sensors and pressing and falling pieces, the pressing and falling pieces are connected with the cable through pulling ropes, the length of each pulling rope is enough to enable the pressing and falling pieces to naturally fall to the slope of the slope, and the weight of each pressing and falling piece is enough to enable the pulling ropes to keep a straight state; The displacement sensor is connected to the cable, a stay wire of the displacement sensor is connected with the weight pressing piece, and the pulling force recovered by the traction of the displacement sensor by the stay wire is smaller than the gravity of the weight pressing piece. Preferably, when the falling member naturally falls to the slope surface of the slope, an acute angle fit is formed between the stay wire of the displacement se