大型堆积体岩土力学特性研究  

STUDY OF GEOTECHNICAL MECHANICAL CHARACTERISTICS OF A LARGE SOIL-ROCK MIXTURE IN A HYDROPOWER PROJECT

作　　者：王自高[1,2] 胡瑞林[3] 张瑞[2] 徐文杰[4] 

机构地区：[1]成都理工大学环境与土木工程学院,四川成都610059 [2]中国水电顾问集团昆明勘测设计研究院,云南昆明610051 [3]中国科学院地质与地球物理研究所,北京100029 [4]清华大学水利水电工程系,北京100083

出　　处：《岩石力学与工程学报》2013年第S2期3836-3843,共8页Chinese Journal of Rock Mechanics and Engineering

摘　　要：堆积体是一种非均质的岩土材料,与岩(土)体相比,构成堆积体的物质成分变异性很大,且空间结构较为复杂,目前对其力学参数试验研究尚缺乏成熟的理论与技术。以梨园水电站工程区大型堆积体为例,在现场大型试验的基础上,对该堆积体的强度特征及岩土力学特性进行研究和探讨,并经工程地质分析确定堆积体岩土物理力学参数。研究表明,堆积体在天然状态下表现出完整的剪应力–剪切位移曲线,具有较高的抗剪强度。研究成果为堆积体稳定分析打下基础,也为类似工程建设提供相关经验。Soil-rock mixture(S-RM) is a kind of inhomogeneous geometrical,compared with rock mass or soil , it has variability of material composition , and more complicated space structure , up to now the experimental study of its mechanical parameters are lack of mature theory and technology. Taking a large soil-rock mixture in Liyuan hydropower project area as an example and on the basis of a large in-situ experiments,its characteristics of strength and mechanics are discussed,physico-mechanical parameters are determined by engineering geological are analyzed as well. Researched results show that it has complete shear stress to shear displacement curve and high shear strength in the natural state,it is not only to lay a foundation for stability analysis of soil-rock mixture , but also to provide relevant experience for similar project construction.

关 键 词：工程地质 大型堆积体 工程地质特征 现场试验 物理力学性质 强度特性 

分 类 号：TU43[建筑科学—岩土工程]