摘要
长沙市广泛分布的白垩系至下第三系粉砂质泥岩，以中—微风化为主，岩石的软化系数＜０７５，孔隙率、吸水率低，裂隙贯通性差，旁压模量高，故具较大的承载潜力。当采用室内单轴抗压试验确定岩石的承载力设计值时，宜以天然湿度单轴抗压强度标准值为基础，折减系数宜取０４０～０８０，并应有相应的旁压试验作对比。
In Changcha city silty mudstone, from which mainly occurred moderatly decomposed rock and slightly decomposed rock, is widespread during Cretaceous to Eogene system. The potential bearing capacity of this rock is relatively larger, having softening coefficient less than 0.75, with low porerate and water absorptivity, and inferior crack connection, and large modulus of pressurement. Determining the bearing capacity design value of rock, using the uniaxial compressive strength standard value and it′s feasible the rock with the natural moisture is appropriated. The reducted coefficient is 0.40 to 0.80 in comparison with the result of pressurement test.
出处
《桂林工学院学报》
1998年第4期357-362,共6页
Journal of Guilin University of Technology
关键词
粉砂质泥岩
工程地质特性
承载潜力
岩基
silty mudstone
engineering geological property
potential bearing capacity
Hunan
Changsha
