龙游牛场古地下洞室群岩柱的长期抗拉强度反演  

BACK ANALYSIS OF THE LONG-TERM TENSILE STRENGTH OF A ROCK PILLAR IN NIUCHANG ANCIENT UNDERGROUND CAVERNS IN LONGYOU COUNTY

作　　者：郭改梅[1] 杨志法[1] 陶波[2] 

机构地区：[1]中国科学院工程地质力学重点实验室,北京100029 [2]石油大学资源与信息学院,北京102249

出　　处：《工程地质学报》2006年第4期449-453,共5页Journal of Engineering Geology

基　　金：国家自然科学基金资助项目(No.40272112)

摘　　要：在龙游县上畈村附近的牛场有一处由2个洞室组成的古地下洞室群。现场调查发现,在其中1号洞的岩柱1上出现了一条竖直的张开裂缝。据分析,这是上覆岩层对该岩柱施加过大荷载的结果,这一发现为本文研究岩体长期抗拉强度提供了条件。作者即以根据牛场古地下洞室群1号洞内岩柱1的拉裂现象为研究对象,根据最大拉应力论来反演岩体的长期抗拉强度。这不仅对长期强度研究具有理论意义,而且在古工程保护方面也具有应用价值。Niuchang ancient underground caverns near Shangfan Village, Longyou County are composed of two caverns. Through field investigation, a vertical tensile crack was found in the No. 1 rock pillar of No. 1 cavern, which resulted from the overloading of upper rock layers. This paper presents the back analysis of the rock mass long -term tensile strength according to tensile cracks in the No. 1 pillar, which not only helps to protect ancient engineering sites but also benefits the theoretical research on the long - term strength of rock mass.

关 键 词：古地下洞室群 长期抗拉强度 反演 

分 类 号：TD264.3[矿业工程—矿井建设]