A ground subsidence monitoring device and its implementation method
A monitoring device and a technology for ground subsidence, which are applied to measurement devices, optical devices, surveying, mapping and navigation, etc., can solve problems such as inability to monitor deeper rock and soil, and achieve stable and reliable measurement results, high precision, and easy data acquisition. Effect
Active Publication Date: 2022-01-11
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology
[0005] The invention provides a ground subsidence monitoring device and its implementation method, which is used to solve the technical problem that the deeper rock and soil cannot be monitored in the prior art
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Embodiment approach
[0054] Such as image 3 As shown, the embodiments of the present invention also provide a method for implementing a ground subsidence monitoring device, the method comprising the following steps:
[0055] S 1 : Site Survey:
[0056] Specifically, in the embodiment of the present invention, Quaternary formations are selected, which are deep and widely distributed, and have typical places where loose sand layers and clay layers are deposited alternately;
[0057] S 2 : Select drilling: choose a full core drill less than 90mm for drilling, and record the drilling, design the hole depth according to the thickness of the soil layer, and it is better to enter the stable bedrock layer;
[0058] Specifically, the boreholes are selected according to the site survey conditions. Generally speaking, the borehole diameter should not be too large, and the small diameter is more conducive to the co-deformation of the test device and the soil. Carry out drilling records, design the hole d...
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The invention provides a ground subsidence monitoring device, comprising: an optical fiber sensing and demodulating device placed on the ground; a distributed optical fiber sensor, one end of which is connected to the optical fiber sensing and demodulating device when measurement is required, and the other end is straight Hanging in the borehole; optical fiber fixing devices, several of the optical fiber fixing devices are arranged at fixed intervals along the direction of the distributed optical fiber sensor; optical fiber clamps are evenly installed on the distributed optical fiber sensor for clamping the A distributed optical fiber sensor, and each of the optical fiber clamps is rotatably connected to each of the optical fiber fixing devices; the weight is fixed at the bottom of the distributed optical fiber sensor. In the present invention, the distributed optical fiber sensor is fixedly connected with the deep underground rock and soil body through the optical fiber clamp, so as to achieve the purpose of synergistic deformation of the distributed optical fiber sensor and the rock and soil body, and then sense the unevenness of the rock and soil body through the distributed optical fiber sensor. Settle evenly.
Description
technical field [0001] The invention relates to the technical field of ground subsidence monitoring devices, in particular to a ground subsidence monitoring device and an implementation method thereof. Background technique [0002] Land subsidence is a ground subsidence phenomenon caused by the joint action of the earth's structure and human engineering activities, which poses a huge threat to the safety of the surface and underground structures, and this issue has attracted widespread attention from the international community. [0003] Land subsidence caused by human engineering activities mainly includes excessive exploitation of groundwater, oil and gas resources, and solid minerals. For coastal areas, land subsidence may also induce seawater intrusion, leading to serious consequences such as land salinization and failure of seaport facilities. [0004] In the prevention and research of land subsidence, an important task is monitoring. Large-scale monitoring methods inc...
Claims
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IPC IPC(8): G01C5/00G01B11/16
CPCG01C5/00G01B11/16
Inventor 鲁莎安鹏举唐辉明王亮清于博帆唐春燕孙思璇蒋银龙
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)