测量岩体应力波的压电应力计

本文介绍一种用于岩体爆炸测量的新型压电应力计--RS 型应力计.它利用压电晶体的压电效应直接测量应力。由于外壳采用爆炸现场测点处的岩芯材料制成,避开了应力测量中难以解决的匹配问题.实践表明:只要保证 RS 型应力计按规定工艺要求制作,并进行系统的标定和回填,对中硬和坚硬岩体中自由场和毛洞周边的爆炸应力测量是可行的。

A piezometer for Stress Wave Measurement in Rock Mass

A new type of stress piezometer, RS stress gage, is presented in this paper. This new type of stress gage make use of piezoelectricity of piezocrystal to measure dynamic stress and read the magnitude directly. To avoid the bad matching of the gage and rock mass in situ, the shell of the gage is made of rock core from in situ. It has been proved that the new stress gage can work well during the measuring of the stress of blast wave in rock mass as long as it was made fine, calibrated accurately, and inserted carefully.