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重庆打通煤矿为一有煤和瓦斯突出的矿井,为了解决因矿压大严重影响矿井生产问题,一九七五年我系矿压实验室对打通一矿39层煤岩样试验了九种煤岩的力学性质,研究煤岩强度和岩体稳定性的关系。 取自一矿井下的试件,一部分为手检样品,其余均为穿过39层煤岩的岩芯。因受试件加工和试验条件的限制,抗弯及抗剪试验只能选择部分煤层和岩层进行。关于吸水膨胀量,
Chongqing Municipality opened a coal mine as a coal and gas outburst of the mine, in order to solve the mine pressure due to a serious impact on mine production problems, in 1975, I Department of mine pressure laboratory opened a 39 coal seam rock test nine kinds of coal Rock mechanical properties, the relationship between rock strength and rock strength. Samples taken from a mine, part of hand-seized samples, the rest are through the 39 layers of rock core. Due to the specimen processing and testing conditions, bending and shear tests can only choose part of the coal seam and rock formation. On the amount of water swelling,