某水电站引水洞进口侧山体边坡块体识别  

Block recognition of mountain slope in delivery tunnel inlet side for a hydropower station

作　　者：杨树才[1] 王常明[1] 马栋和[1] 陈龙[2] 刘治 

机构地区：[1]吉林大学建设工程学院,长春130021 [2]中国石油天然气管道工程有限公司,河北廊坊065000 [3]山东省地矿局第三地质矿产勘查院,山东烟台264004

出　　处：《世界地质》2012年第1期204-209,共6页World Geology

基　　金：国家自然科学基金项目(40972171)

摘　　要：某水电站进口侧山体边坡岩体为完整性较差的中-薄层状灰岩,岩体中主要发育3条断层、1组岩脉和4组优势节理,严重影响了该山体边坡的稳定性。根据结构面分布,采取块体理论搜索边坡上的关键块体,通过赤平投影法找出边坡上所有的非空裂隙锥,将这些非空裂隙锥与临空面组合,从而获得所有可动块体;利用矢量法计算不同运动形式下块体JP编号、净滑力即可获得关键块体。结果表明:该水电站引水洞进口侧山体边坡有4块关键块体(JP编号为00010111、00110111、10110111、10111011),为该边坡稳定性的进一步研究提供了基础。The slope rocks of delivery tunnel inlet side of a hydropower station are middle-thin layered limestone,in which there are mainly three faults,one dyke and four groups of superior joints.The characters seriously effect the stability of this mountain slope.According to the distribution of structural surfaces,the authors use block body theory to search of the key block bodies in the slope.The non-spatial fracture cones in the slope were find out by stereographic projection law.Combined them with free surface to get the whole movable block bodies,the authors calculated the JP number and the net sliding force under different movable forms to find out the key block bodies.The result indicates that there are 4 key block bodies in the slope of delivery tunnel inlet side of this hydropower station,with the JP numbers 00010111,00110111,10110111 and 10111011,which proves the base for further examination of the slope stability.

关 键 词：引水洞 边坡 块体理论 关键块体 

分 类 号：TU457[建筑科学—岩土工程]