【摘要】 为分析各种因素对复合顶板离层的影响程度,选用原岩应力、巷道宽度、复合顶板岩性、复合顶板厚度及结构面黏结力和内摩擦角6个因素5水平的正交实验数值,模拟分析了不同条件的离层值和结构面分离范围。结果表明:巷道宽度和复合顶板厚度对层间离层值和结构面分离范围都产生显著影响,随巷道宽度增加和复合顶板厚度减小,离层值和结构面分离范围近于线性增加;一定范围内原岩应力、复合顶板岩性对结构面分离范围产生显著影响,对结构面层间离层有一定影响;结构面黏结力和内摩擦角对离层和结构面分离范围影响很小。更多还原

【Abstract】 In order to analyze the sensitivity of influence factors on interlayer separation of complex roof,size of construction surface and interlayer separation was simulated by orthogonal experiment which had six factors with each factor having five levels that was original rock stress,rock properties of complex roof,tunnel width,rock thickness of complex roof,cohesion and internal frication angle of construction surface.The results showed that tunnel width and rock thickness of complex roof had ob-vious influence on interlayer separation and construction surface separation,with the increase of tunnel width and decrease of rock thickness of complex roof,the size of interlayer separation and construction surface separation linear increased.Rock properties in certain range had some influence on interlayer separation and more influence on construction surface separation.Internal frication angle and cohesion of construction surface had little influence on interlayer separation and construction surface separation.更多还原