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针对地下水平盐岩储库的结构特点,对其顶板交界层面处的滑移破损和强度破坏进行分析。从力学基础理论出发,对水平型地下盐岩储库周围的应力分布进行理论解析,并着重分析顶板交界层面上的应力;利用经典Mohr-Coulomb准则,综合考虑储库深度、储库半径、顶板厚度、内摩擦角、黏聚力以及内压等因素,建立顶板交界层面不产生滑移的条件表达式以及强度破坏的条件表达式;通过算例,分析各个因素与顶板交界层面破坏的关系,确定顶板交界层面处的破坏位置及范围,从而为水平地下盐岩储库的建造和运营提供一定的理论基础。
According to the structural characteristics of underground salt rock reservoirs, the sliding damage and strength failure at the interface of roof are analyzed. Based on the basic theory of mechanics, the stress distribution around the horizontal underground salt rock reservoir is theoretically analyzed, and the stresses on the roof boundary layer are analyzed emphatically. Based on the classical Mohr-Coulomb criterion, the reservoir depth, reservoir radius, Thickness, internal friction angle, cohesion and internal pressure and so on, the condition expression and the condition expression of strength failure are established. The relationship between each factor and the failure of roof boundary layer is analyzed, Determine the location and extent of damage at the junction of the roof so as to provide a theoretical basis for the construction and operation of horizontal underground salt rock reservoirs.