摘要
深部岩体单轴抗压强度受到水和地温的影响,目前采用岩石的软化系数来表征水热弱化作用,但软化系数为一定值;为了反映含水率和温度变化对岩体强度的动态影响,定义了两个新的变量,水弱化系数和热弱化系数;并通过试验方法和相似系数方法来确定新的变量。结果表明,定义的变量随含水率和温度的变化而变化,能够反映了深部岩体水热弱化损伤的本质,得到的结果可为工程实践提供指导。
The uniaxial strength of deep rock mass would be affected by water and heat; their damage effect is at present mainly described by the softening coefficient as a constant In this paper, in order to show the dynamic effect of moisture content and temperature on the strength of rock mass, two new variables are proposed： the water damage coefficient and the heat damage coefficient; they can be determined by test and the similarity coefficient method. The results show that the new coefficients vary moisture content and temperature, and can reflect the of deep rock mass subjected to the water and heat
出处
《科技导报》
CAS
CSCD
2008年第23期34-38,共5页
Science & Technology Review
基金
中南大学博士后科学基金项目(200737)
关键词
水热弱化
岩体
修正
water heat damage
rock mass
revised
