FEM Analysis of Stress Distribution Law in the Rocksalt Cavity's Surrounding Rock
FEM Analysis of Stress Distribution Law in the Rocksalt Cavity's Surrounding Rock
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发表时间：
2003
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通讯作者：
L. Xin
中科院分区：
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作者：
L. Xin
在有限元数值分析的基础上，分析了岩盐溶腔围岩应力等值线图及最大主应力随深度和水平方向的变化规律。研究了岩盐溶腔跨度、水压力、岩盐层埋深等因素对溶腔周围应力分布的影响。结果表明，盐岩最大主应力随埋深的增加而增大。孔洞对应力分布的影响随着离孔洞越近越明显。随着水压力的增大，岩盐溶腔中的应力集中现象减弱。但应力集中程度会更强，应力值也会增大。
Basic on the FEM numerical analysis, the contour maps stress of rocksalt cavity's surrounding rock and the major principal stress's law changed with the depth and horizontal direction are analyzed. The influencing factors to the distribution of the stress surrounding rocksalt cavity, such as cavity's span, water pressure and the depth of rocksalt layer is also studied. The results show that major principal stress becomes big with the increase of rocksalt's depth. The cavity's influence to the stress's distribution will be clearer with the nearer to the cavity. The stress's centralization will be weaker with the accretion of water pressure in rocksalt's cavity. But the stress's centralization will be stronger, and the stress's value increases.