Method and its device for frozen soil subside and drill monitoring

A frozen soil and point-measuring technology, which is applied in the direction of measuring devices, using optical devices, and using optical devices to transmit sensing components, etc., can solve the problems of bulky equipment, complicated testing process and post-analysis, and many testing personnel, and achieve easy operation , good stability and simple device structure

Inactive Publication Date: 2005-03-02
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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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

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]The double-ring se...

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Abstract

The invention discloses a frozen soil subsidence method and apparatus, relating to geotechnical engineering deformation monitoring. The concrete method is described as follows: (1) drill vertically in frozen soil monitored and choose measuring point; (2) measuring wire which is stainless steel wire rolled on pulley, with one end fixed on the measuring point and another fixed with weight drop; (3) on the measuring wire of hole outlet, clamping device for installing photocoupling CCD sensor which can obtain information of subsidence of the measuring point is fixed; (4) use special apparatus to show, transmit and record information of subsidence information. The apparatus is consisted of frozen soil drilling digital sensor (A), CCD digital data collection instrument (B), lightwave fiber converter (C), lightwave fiber (D), dual-ring optical transmitter and receiver (E) and PC computer (F), realizing frozen soil subsidence remote measurement under complex circumstance, besides, it can also be used in eotechnical engineering deformation monitoring, the device has tructure simple, high accuracy, good stability and convenient 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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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 AND SOIL MECHANICS - CHINESE ACAD OF SCI
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