基于地质强度指标法的柱状节理玄武岩体力学强度估计被引量：4

STRENGTH ESTIMATION OF COLUMNAR JOINTED BASALTIC MASS BASED ON GEOLOGICAL STRENGTH INDEX

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摘要节理岩体的强度是岩体工程设计的重要参数,柱状节理岩体作为一种具有柱状镶嵌结构的特殊节理岩体,缺乏相似的工程案例,其岩体强度的确定是目前水电工程中的热点问题。本文综述了国内外相似工程中柱状节理岩体强度的研究进展,以白鹤滩水电工程为例,结合Hoek和Brown最新提出的地质强度指标法和强度准则估算了不同爆破损伤下的柱状镶嵌块状结构和柱状镶嵌碎裂结构柱状节理岩体的强度参数,并得到白鹤滩水电站的原位试验成果的验证,计算表明基于地质强度指标法的Hoek和Brown强度准则能较好的反映柱状节理岩体的强度参数。 The strength parameters of jointed rock mass are important to rock engineering design. The columnar jointed basaltic mass is special with columnar mosaic structure and the similar engineering case lacks. The strength of columnar hydropower project. This paper jointed basaltic mass. Taking jointed basaltic mass currently becomes an advanced research reviews domestic and international researches on strength of the columnar jointed basaltic at Baihetan Hydropower Stati hotspot in columnar On as an example, the GSI and Hoek-Brown Criterion are applied to estimate strength parameters of columnar mosaic blocky and cataclastic basaltic masses under different blasting damages. The result is proved by in situ tests at Baihetan Hydropower Station. It is concluded that the GSI-based Hoek-Brown Criterion can better reflect real strength parameters of columnar jointed basaltic masses.

作者郑文棠汪华安葛军辉

机构地区广东省电力设计研究院清华大学土木水利学院

出处《地质力学学报》 CSCD 2009年第4期330-335,共6页 Journal of Geomechanics

关键词柱状节理岩体强度地质强度指标法 Hock.Brown强度准则 columnar joint rock mass strength geological strength index method Hoek-Brown strengthrule

分类号 P55 [天文地球—构造地质学]

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