边坡卸荷带岩体渗透特性分析——以三峡永久船闸高边坡为例  

Seepage characteristics of rock mass in slope unload zone:the case of high side-slope of TGP permanent ship lock

作　　者：孙云志[1,2] 

机构地区：[1]三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌443002 [2]长江勘测规划设计研究院岩土工程总公司,湖北武汉430010

出　　处：《人民长江》2011年第3期20-22,共3页Yangtze River

基　　金：三峡库区地质灾害教育部重点实验室开放基金(2008KDZ01)

摘　　要：为了准确描述卸荷带岩体的渗透特性,以三峡永久船闸高边坡为例,应用其监测资料,引入应变指标,将岩体卸荷带划分为强卸荷变形带、弱卸荷变形带和卸荷应力应变调整带。观测资料的计算分析表明：与未开挖岩体相比,强卸荷变形带、弱卸荷变形带和卸荷应力应变调整带的渗透系数分别增大了3 138~330,92~27倍和8~1倍。对整个分析过程作了详细介绍。How to describe the seepage behaviors of rock mass is a popular concerned problem in engineering circle and academic community.Taking the high side-slope of TGP permanent ship lock as example,by introduction of strain index,the unloading zone can be divided into strong unloading deformation zone,weak unloading deformation zone and stress-strain adjustment zone.The monitoring data showed that compared with the unexcavated rock mass,the seepage coefficients of the three zones increased by 3138~330-fold,92~27-fold and 8~1-fold respectively.The process of analysis is presented in detail.

关 键 词：边坡卸荷岩体 应变 渗透系数 三峡永久船闸 

分 类 号：U641[交通运输工程—船舶及航道工程]