【作者】 周应华； 周德培； 杨涛； 程强；

【Author】 ZHOU Yinghua;ZHOU Depei;YANG Tao;CHEN Qiang School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031 China Communication Department of Highway Survey and Design of Sichuan Province, Chengdu, 610041

【机构】 西南交通大学土木工程学院； 四川省公路交通厅勘测设计院；

【摘要】 对川东红层地区砂岩、粉砂岩、泥岩进行试验研究,得出了它们的单轴抗压强度、弹性模量、泊松比以及抗剪强度参数等主要力学参数。单轴压缩过程中,砂岩、粉砂岩、泥岩在破坏形式上呈现出从张性破坏到塑性破坏的趋势。三轴试验结果表明,红层软岩的切线模量、刚度随围压的增大而增大。更多还原

【Abstract】 Through testing study performed on sandstone, siltstone and mudstone in the east of Sichuan RedBasin, the main mechanic paramentersuch as uniaxial compressive strength, elasticity modulus, Poisson’s ratio andshear strength parameters is put forward in this paper. The failure forms of sandstone, siltstone and mudstone varyfrom tensile crack to plastic failure in the process of uniaxial compression testing. The result of triaxial testingreveals that the tangential modulus and stiffness increase with confinement pressure.更多还原