地下水平盐岩储库顶板交界层面滑移破损与强度破坏特性分析  

ANALYSIS OF SLIPPAGE AND FRACTURE CHARACTERISTIC ON ROOF INTERFACE OF UNDERGROUND HORIZONTAL SALT CAVERNS

作　　者：郝铁生[1] 梁卫国[1] 张传达[1] 

机构地区：[1]太原理工大学采矿工艺研究所,山西太原030024

出　　处：《岩石力学与工程学报》2014年第A02期3956-3966,共11页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家杰出青年科学基金资助项目(51225404)

摘　　要：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。Based on the characteristics of horizontal salt caverns,bedding plane slip and fracture between roof and cap rock are analyzed. A theoretical analysis of stress distribution around the salt caverns is presented,and discusses the normal stress and shear stress acting on the roof interface. Considering several main factors,such as the depth of salt caverns,friction angle,roof thickness,cavern pressure,as well as the radius of the caverns,it develops a rule based on the Mohr-Coulomb criterion to limit slippage and fracture characteristic of the roof interface. According to a example,it also analysis the relationship between the factors mentioned above and slippage and fracture of the roof interface,and then the range of damage on the roof interface is determined. The results will be helpful to the construction and operation of salt caverns.

关 键 词：岩石力学 层状盐岩 水平储库 顶板 交界层面 强度破坏 滑移 

分 类 号：TU45[建筑科学—岩土工程]