钙芒硝单轴压缩力学特性的试验研究  

Experimental Study on Uniaxial Compressive Mechanical Properties of Glauberite

作　　者：刘中华[1,2] 薛晋霞[1] 胡耀青[2] 徐素国[2] 

机构地区：[1]山西农业大学工程技术学院,山西太谷市030800 [2]太原理工大学采矿工艺研究所,山西太原030024

出　　处：《矿业研究与开发》2012年第5期67-69,共3页Mining Research and Development

基　　金：国家自然科学基金资助项目(50804033);全国优秀博士论文专项资金资助项目(200959)

摘　　要：利用高精度μCT225KVFCB显微CT试验系统和JL型微机控制电液伺服万能试验机,对钙芒硝单轴压缩力学特性进行了研究。研究表明:钙芒硝压密阶段不明显,且存在刚性阶段;钙芒硝单轴抗压强度平均为7.54 MPa,属于软岩,其单轴抗压强度随着物质密度的增大而增大,随物质密度不均匀程度增大而减小,且与X射线衰减系数、衰减系数方差呈线性拟合关系。The experimental study on the uniaxial compressive mechanical properties of glauberite was carried out by high-precision Micro-CT μCT225KVFCB test system and JL computer-controlled electro-hydraulic servo compression test system.The results of studies showed that compaction phase was not obvious and there was a stiffness phase in the test.The average of uniaxial compressive strength was 7.54 MPa.The glauberite is a kind of soft rock.The uniaxial compressive strength of the glauberite increased with the increase of its density,but decreased with the increase of inhomogeneity of its density,and was fitted linear relationship with the attenuation coefficient of the diagnostic X-rays and the variance of the attenuation coefficient.

关 键 词：岩石力学 钙芒硝 单轴压缩强度 CT 

分 类 号：TD315.1[矿业工程—矿井建设]