含共面结构面岩体强度损伤规律研究  

Research on the Strength Damage Law of Rock Mass Containing Coplanar Structural Planes

作　　者：郭牡丹[1] 陈年和[1] 王述红[2] 

机构地区：[1]江苏建筑职业技术学院建筑工程技术学院,江苏徐州221116 [2]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《江苏建筑》2016年第2期36-39,共4页Jiangsu Construction

基　　金：国家自然科学基金资助项目(51474050;51179031)

摘　　要：岩体结构面的存在对岩体强度造成了不同程度的损伤作用,直接影响了岩体工程的设计和施工。因此,研究岩体结构面对岩体强度损伤的规律显得尤为重要。文章引入损伤系数变量定量描述岩体的损伤程度,采用数值模拟的方法计算不同方案情况下33个试样的峰值强度,分析岩桥倾角、结构面摩擦系数、围压和连通率对损伤系数的影响,给出了它们之间的函数关系,推导出了计算含共面结构面岩体的强度损伤经验公式。利用该公式可以准确的判断岩体强度的损伤程度,为更好的衡量岩体强度参数奠定基础。The presence of structural plane cause different damage to the strength of rock mass, it directly impacts on the design and construction of engineering in rock mass. Therefore, it is very important to study the law of strength damage causing by the structural plane of rock mass. In this paper, the damage coefficient was introduced to quantitative describe the damage degree of rock mass, as well as numerical simulate method was used to calculate the peak strength of thirty-three samples in different projects. And then, analyze the influence of damage coefficient by ligament angle, friction coefficient of structural planes, lateral press, and connectivity rate, and give the relationship between them. At last, empirical formula was deduced, which can calculate the strength damage of rock mass contain two coplanar structural plane. Using this formula can accurately determine the damage degree of strength in rock mass, so it lays the foundation for better measure strength parameters of rock mass.

关 键 词：共面结构面 强度损伤 损伤系数 损伤规律 

分 类 号：TU457[建筑科学—岩土工程]