中文摘要：

盐岩与非岩盐夹层界面的滑移破损,严重影响地下岩盐储气（油）库稳定性和密闭性。为建立地下水平岩盐储库内薄弱夹层滑移破坏的理论判据,从力学基础理论出发,以椭圆形断面水平岩盐储库为例,对溶腔内薄弱夹层进行了界面上的应力分析;利用经典的库仑莫尔准则,综合考虑储库深度、内摩擦角、内聚力、内压以及夹层位置等因素,定义了薄弱内夹层滑移破坏的稳定因子。通过算例,分析了各个因素与岩盐夹层交界面滑移破坏的关系。本研究结果可以为地下水平型储库设计关键参数的确定提供理论依据。

英文摘要：

Slippage and fracture characteristic of interlayer between salt layer and non-salt lay- er has a significant effect on the static stability and tightness of underground salt caverns, espe- cially of the horizontal caverns. For the development of the failure criterion of thin and weak non- salt layer interlayer, this paper presents a theoretical analysis of stresses acted on thin and weak interlayer in the horizontal cavern with an elliptical cross-section, and slippage and fracture of both horizontal and inclined interlayer are discussed;the damage factor, which includes the influ- ence of several main factors, such as the depth of salt caverns, friction angle, cohesion, cavern pressure, as well as the position of the interlayer, is defined on the basis of the Mohr-Coulomb criterion; according to an example, it also analyzes the relationship between the factors men- tioned above and interlayer interface slippage; the results will be helpful to determine the crucial parameters of cavern design and operation.