岩土力学2012，Vol.33Issue(2)：361-366,6.
粤西滨海核电厂址强风化花岗岩物理力学特性试验研究
Investigation of physico-mechanical properties for highly weathered granite of nuclear power station in coastal site of western Guangdong province
摘要
Abstract
The distribution and weathering characteristics of granite in the western coastal site of Guangdong province are described. A series of in-situ tests are conducted, including the velocity tests, load tests and in-situ shear tests, along with laboratory tests involving conventional compression test and consolidation test. Based on test results, the physico-mechanical properties of highly weathered granite are analyzed. It is indicated that: (1) Due to strong physicochemical weathering processes, the unstable elements in bedrock are leached which further result in formation of aluminum-rich-and iron-rich types of thick weathering crust. Heterogeneity of rock is obvious. (2) Natural moisture content and void ratio of highly weathered rockmass vary greatly, while natural density and modulus of compression change moderately. (3) Particle sizes have a great impact on the physical characteristics of weathering granite. The physical indexes are stronger as the decrease of particle sizes. (4) Wave velocity is closely related to the weathering degree and particle composition. (5) Water content has more apparent effect on cohesion than friction angle. The attenuated effect on cohesion of highly weathered granite is obvious in particular. The research results can provide basic data for construction of nuclear power station and optimal design.关键词
强风化花岗岩/原位测试/室内试验/物理力学性质Key words
highly weathered granite/ in-situ test/ laboratory test/ physico-mechanical properties分类
建筑与水利引用本文复制引用
马海毅,鲁祖德..粤西滨海核电厂址强风化花岗岩物理力学特性试验研究[J].岩土力学,2012,33(2):361-366,6.基金项目
广东省自然科学基金(No.S2011040005245) （No.S2011040005245）
广东省电力设计研究院2008年立项院级科研项目:第三代核电技术地基适宜性分析及评价. （）
