摘要
为了研究煤系地层中赋存深度的变化对深部岩石力学参数的影响,以50m为一个岩层深度范围,通过对淮南矿区潘集背斜上某矿赋存深度在800~1 300m深度范围的同一层泥岩和砂岩样本的单轴抗压强度、弹性模量、泊松比、黏聚力、内摩擦角、抗拉强度等岩石基本物理力学参数的试验研究,采用SPSS19.0对试验结果分别进行统计分析,结果发现,泥岩和砂岩的泊松比均随深度的增加而减小,而这两种岩石其余5个力学参数则随赋存深度而增加,且深度的变化对砂岩力学参数变化影响更大;深度在1 000m附近时,泥岩和砂岩的力学参数都会出现显著变化。
In order to study on the effect of change in depth on mechanical parameters of deep rock in coal bearing strata, using 50m as a layer depth in this work, Mudstone and sandstone samples were taken from 9 different depths ranging from 800m to 1300m at Zhu Ji mine in Huainan mining area. According to the national standard, some physical and mechanical parameters of rock were obtained, including uniaxial compressive strength, elastic modulus, Poisson＇ s ratio, cohesion, friction angle, uniaxial tensile strength, by uniaxial compression tests, var- iable angle shear tests and Brazilian tests for two kinds of rock respectively after processing. Analyzing all these data respectively with statistics software SPSS19.0, it could be found that the Posisson＇ s ration of mudstone and sandstone both got smaller with the increase in depth, while the other five mechanical parameters all got bigger with depth, moreover, the change in depth exerted greater effect on sandstone mechnical parameters, and the mechanical properties of mudstone and sandstone both had significant changes in the depth of around 1 000m.
出处
《安徽理工大学学报（自然科学版）》
CAS
2017年第6期52-59,共8页
Journal of Anhui University of Science and Technology:Natural Science
关键词
煤系地层
泥岩与砂岩
试验研究
岩石力学参数
赋存深度
变化规律
coal bearing strata
mudstone and sandstone
experimental study
mechanical parameters of rock
overburden depth
law of changes
