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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

Inactive Publication Date: 2006-10-18
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for monitoring frozen soil settlement drilling in order to overcome the shortcomings of existing electromagnetic and mechanical frozen soil deformation monitoring equipment, such as bulky, many testers, and complicated testing process and post-analysis.

Method used

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  • Method and its device for frozen soil subside and drill monitoring
  • Method and its device for frozen soil subside and drill monitoring
  • Method and its device for frozen soil subside and drill monitoring

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Embodiment Construction

[0044] Further description will be given below in conjunction with the accompanying drawings and implementation examples.

[0045] 1. CCD digital data acquisition instrument

[0046] CCD digital data acquisition instrument B selects GK-12C data acquisition instrument, such as image 3 shown. GK-12C data acquisition instrument is composed of 8-way analog switch B1, single-chip microcomputer and interface circuit B2, SRAM data memory B3, clock B4, display B5, keyboard B6.

[0047] Since there are as many as 8 measuring points, the single-chip microcomputer starts the analog switch in sequence at regular intervals, respectively collects the 8-way CCD digital signals and stores them in the SRAM data memory B3.

[0048] The interface is connected with the portable microcomputer G or with the optical fiber converter C.

[0049] The operation of the portable microcomputer G can retrieve the memory data in the SRAM data memory B3 on the spot at any time.

[0050]Connect with doubl...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02G01B11/16G01D5/353
Inventor 胡明鉴汪稔蔡惟鑫谭适龄朱瑞赓石祥锋
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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