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根据物理模型试验的相似原理,经过大量物理模型试验,研制成一批可以模拟页岩物理力学性能且具有五种不同孔隙率的相似材料。该材料由河砂、石膏粉、水、水泥按一定配比均匀拌合压实而成。根据材料力学参数测试得到,该页岩相似材料满足相似原理,且性能稳定、制作工艺简单、经济实用、无毒无害,可以用来模拟页岩。通过单轴压缩试验、劈裂试验、三轴压缩试验,得到该批材料的泊松比随孔隙率的增大而增大,抗压强度、抗拉强度、弹性模量、粘聚力、内摩擦角则均随孔隙率的增大而减小的结论。
According to the similar principle of physical model test, after a large number of physical model tests, a series of similar materials with five different porosities that can simulate physical and mechanical properties of shale have been developed. The material from the river sand, gypsum powder, water, cement according to a certain ratio of uniform mixing compaction made. According to the testing of material mechanics parameters, the similar material of shale meets the similar principle and has the characteristics of stable performance, simple production process, economical and practical, non-toxic and harmless, and can be used to simulate shale. Through the uniaxial compression test, cleavage test and triaxial compression test, the Poisson’s ratio of this batch of materials is increased with the increase of porosity. The compressive strength, tensile strength, elastic modulus, cohesion, The friction angle decreases with the increase of porosity.