基于螺旋平行线与时域反射技术的岩土变形分布式探测研究

doi:10.13722/j.cnki.jrme.2015.1309

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Abstract Aiming at some problems in the geological hazard monitoring methods for the rock and soil deformation caused by landslides，debris flow，etc，a new method for the monitoring of rock and soil deformation has been proposed. The method is a deformation distribution measurement technique which is composed of the spiral parallel transmission line and time domain reflection technology. The deformation distributed measurement and calibration system is designed. The tensile device of the system is used to stretch of the whole spiral line of 162 cm and stretch positioning of the spiral line of 500 cm，at the same time，the time domain reflection device of the system is used to test the spiral line，and using the partial least squares to model the measurement data of the two groups respectively. To gradually stretch the spiral line of 165 cm to 195 cm，centimetre by centimetre，once 1 centimetre is stretched，new reflection data of time domain is acquired.The maximum error of the tensile model is 0.3%. To gradually stretch the spiral line of 500 cm from the starting to the end，and to stretch the spiral line 2 cm every 10 cm，once 1 step is stretched，new reflection data of time domain is acquired. The maximum error of the tensile model is 2%. The experimental shows that the proposed method can accurately predict the tensile and tensile strength of the parallel transmission lines，and it solves the problem that the measured place not be changed and the changed place can not be measured. Whats more，it has a larger measurement range than the optical measurement method of slope.

Key words： soil mechanics rock and soil deformation spiral parallel transmission line partial least squares time domain reflection technology

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	Articles by authors
	ZHANG Yangkai
	JIA Shengyao
	CAO Bo
	LI Qing

Cite this article:

ZHANG Yangkai,JIA Shengyao,CAO Bo, et al. Investigation of rock and soil deformation distributed detection based on spiral parallel line and time domain reflection technology[J]. , 2016, 35(S2): 4187-4195.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.1309 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/4187

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