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为研究深井泥岩的水理性质,利用自主研发的深部软岩水理智能测试系统,对辽宁省大强煤矿的巷道泥岩进行吸水实验,并对不同吸水时间的泥岩进行单轴压缩实验,进一步揭示其遇水后强度软化机理。实验结果表明:大强煤矿泥岩的吸水过程可划分为非线性减速吸水和等速吸水2个阶段;单轴抗压强度随吸水时间的增长呈负指数衰减。
In order to study the hydraulic properties of deep mudstone, the self-developed deep soft rock hydraulic intelligent test system was used to carry out water absorption experiments on the mudstone of the tunnel in Daqiang Mine in Liaoning Province. Uniaxial compression tests were carried out on mudstone with different water absorption time to further reveal its Water softening mechanism after water. The experimental results show that the water absorption process of mudstone in Daqiang coal mine can be divided into two stages of non-linear deceleration water absorption and constant velocity water absorption; the uniaxial compressive strength shows negative exponential decay with the increase of water absorption time.