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为了控制锡矿山的地压和解决锡矿山河下采矿问题,锡矿山矿务局、长沙矿山研究院和冶金部安全技术研究所三单位,进行了长达十余年的试验研究工作。其间采用了多达十一种的观测技术。其中的CO型钢弦测力计、DY-1型电阻式位移计、R-50型光弹性应力计,在国内尚属首次使用。在长期的系统的现场监测的同时,并进行了
In order to control the pressure of tin mines and solve the problems of mining under the mines of tin mines, the three units of the Institute of Mining Technology, the Institute of Mining and Minerals, the Changsha Institute of Mining and Minerals, carried out more than ten years of experimental research. In the meantime, as many as eleven kinds of observation techniques are used. One of the CO-type steel chord dynamometer, DY-1-type resistance displacement meter, R-50-type photoelastic stress gauge, is the first time in China. In the long-term systematic monitoring of the site at the same time, and carried out