Landslide monitoring and early warning system for structural hybrid rock area

A technology for monitoring and early warning and melange, applied in alarms, climate sustainability, instruments, etc., can solve the problems of complex deformation rules of rock mass, false alarm and early warning information release, lag, etc.

Active Publication Date: 2022-07-12
中铁西南科学研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the complex geological conditions in the structural melange area lead to complex deformation laws of rock mass. Using the above method for l

Method used

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  • Landslide monitoring and early warning system for structural hybrid rock area
  • Landslide monitoring and early warning system for structural hybrid rock area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A landslide monitoring and early warning system (such as figure 1 shown), including:

[0037] The microseismic monitoring module is used to obtain the vibration amount generated by the rock mass rupture, and if the vibration amount exceeds the threshold, a first warning signal is generated;

[0038] InSAR image acquisition module (is a newly developed space-to-Earth observation technology, which is the product of the combination of traditional SAR remote sensing technology and radio astronomy interference technology. It uses radar to transmit microwaves to the target area, and then receives the echoes reflected by the target to get For the SAR complex image pairs imaged in the same target area, if there is a coherence condition between the complex image pairs, the interferogram can be obtained by conjugate multiplication of the SAR complex image pairs. According to the phase value of the interferogram, the path difference of the microwaves in the two imaging can be obta...

Embodiment 2

[0049] The difference between this embodiment and Embodiment 1 is that in this embodiment, the deformation of the InSAR image acquisition module exceeding the deformation threshold includes: dividing and connecting the monitoring points by equal deformation according to the deformation value of each monitoring point, Obtain a plurality of first isomorphic variable curves; calculate the distance between each monitoring point on each first isomorphic variable curve and the first isomorphic variable curve adjacent to the first isomorphic variable curve, so as to be less than the distance threshold The distance is the radius, and the monitoring point corresponding to the distance less than the distance threshold is used as the center of the circle to delineate the fission monitoring area. ; Compare the InSAR image at the i+3 moment with the InSAR image at the i+2 moment to determine the deformation value of each marked monitoring point; carry out an isomorphic calculation of the ma...

Embodiment 3

[0051] Compared with the second embodiment, the only difference is that the processing module is also used to, when the second early warning signal and the third early warning signal are received, and the first early warning signal is not received, take the current time as the first warning signal. The timestamp generates the first verification information; the communication module sends the first verification information to the adjacent communication module after receiving the first verification information; the communication module sends the first verification information to the processing module after receiving the first verification information, and the processing module receives the first verification information. After the first verification information, analyze the generation time of the first verification information, and compare it with the time when the second early warning signal and the third early warning signal are received, if the time is the same, an alarm signal...

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Abstract

The invention relates to the technical field of geological disaster prevention and control, and particularly discloses a constructed hybrid rock area landslide monitoring and early warning system, which comprises a displacement monitoring module used for acquiring the displacement amount of a landslide earth surface, and generating a third early warning signal if the displacement amount exceeds a displacement threshold value; the micro-seismic monitoring module is used for obtaining the vibration quantity generated by rock mass fracture in the landslide, and if the vibration quantity exceeds a threshold value, a first early warning signal is generated; the InSAR image acquisition module is used for acquiring an InSAR image of the landslide at the ith moment, setting an area, of which the color depth is greater than a depth threshold value, in the InSAR image at the ith moment as a monitoring area, setting a monitoring point in the monitoring area, acquiring an InSAR image of the landslide at the (i + 1) th moment, comparing the InSAR image at the (i + 1) th moment with the InSAR image at the ith moment, and obtaining a comparison result of the (i + 1) th moment and the InSAR image at the ith moment; and determining the deformation quantity of each monitoring point, and if the deformation quantity exceeds a deformation threshold value, generating a second early warning signal. The landslide monitoring and early warning system for the structural hybrid rock area can sense in advance and reduce false alarms.

Description

technical field [0001] The invention relates to the technical field of geological disaster prevention and control, in particular to a landslide monitoring and early warning system in a structural melange area. Background technique [0002] A melange is a special rock (stratigraphic) body. It is a special rock body deformed by plate tectonics and can be drawn on the geological map, also known as mixed accumulation. It consists of three parts: foreign rock blocks, in-situ rock blocks and matrix. All the above-mentioned rock fragments are of different sizes and shapes, are in contact with each other in tectonic relationship, and have undergone shearing action of different scales. [0003] Due to the complex geological conditions in the tectonic melange area, major landslides occur frequently, which not only endangers the safety of people's livelihood and property, but also may cause immeasurable harm to the ecological environment of important rivers and water sources. Theref...

Claims

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Application Information

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IPC IPC(8): G08B21/10G08B29/18
CPCG08B21/10G08B29/185Y02A50/00
Inventor 马显春黄永威李冠奇肖洋赵占群吴磊上官力
Owner 中铁西南科学研究院有限公司
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