Method and its device for frozen soil subside and drill monitoring

A permafrost and digital technology, applied in the measurement device, the use of optical devices, and the use of optical devices to transmit sensing components, etc., can solve the problems of many testers, complicated testing process and post-analysis, and bulky equipment, and achieve a simple device structure. , Easy to operate, good stability
CN1280606CInactive Publication Date: 2006-10-18INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
Publication Date
2006-10-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and a device for monitoring borehole settlement of frozen soil, and relates to deformation monitoring of geotechnical engineering. The method is as follows: ① vertically drill holes in the frozen soil to be monitored and select measuring points; A heavy hammer is fixed at the other end; ③ A fixture with a photoelectric coupling CCD sensor is fixed on the measuring line at the exit of the borehole, and the sensor can obtain the settlement information of the measuring point; ④ Use special instruments to display, transmit and record the settlement information. The device is composed of a permafrost drilling CCD digital sensor (A), a CCD digital data acquisition instrument (B), an optical fiber converter (C), an optical fiber (D), a double-loop self-healing optical terminal (E), and a PC computer (F). The invention not only realizes the remote measurement of permafrost settlement in places with complicated environment and difficult conditions, but also is suitable for deformation monitoring of geotechnical engineering. The device has the advantages of simple structure, high precision, good stability and easy operation.
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Description

technical field

[0001] The invention relates to geotechnical engineering deformation monitoring, in particular to a method and device for monitoring frozen soil settlement. Specifically, it is mainly aimed at the permafrost subsidence monitoring in cold regions, especially for the subsidence monitoring of construction foundation engineering and subgrade engineering in permafrost regions. Combining the advantages of digital monitoring and optical fiber data transmission, digital monitoring of permafrost subsidence in cold regions is carried out. , and through the optical fiber transmission of the monitoring results, the automatic telemetry of the permafrost settlement is realized. Background technique

[0002] Geotechnical engineering deformation monitoring is an important part of geotechnical engineering, and has been widely used in deformation monitoring of slopes, dam foundations, tunnels, roads and bridges. The observation of soil deformation and settlement has developed...

Claims

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