广西科技大学学报2025，Vol.36Issue(3)：41-51,11.DOI:10.16375/j.cnki.cn45-1395/t.2025.03.006
钻井法条件下西部矿区细粒砂岩物理力学与磨蚀特性研究
Experimental studies on the physical and mechanical properties and erosion characteristics of fine-grained sandstone in western China under drilling construction conditions
摘要
Abstract
In order to study the change law of physical and mechanical properties and abrasion characteristics of fine-grained sandstone in vertical shaft of western coal mine under the condition of drilling sinking construction,this study designed and conducted hardness,longitudinal wave velocity,uniaxial compressive strength test,Brazilian splitting test and CAI(cerchar abrasivity index)test of fine-grained sandstone after drying,saturation and mud saturation treatment.By using the methods of linear regression and correlation analysis between elements,the relationship between CAI and parameters of sandstone in three states was studied.The main research conclusions are as follows:Compared with dry sandstone,the hardness,uniaxial compressive strength and tensile strength of saturated and mud-saturated sandstone were attenuated,the abrasiveness of rock was reduced,the mineral content of calcite and clay was reduced,and only the physical parameter wave velocity and some mineral components were increasing.The CAI of dry,saturated and mud saturated sandstones were highly correlated,which are 0.926,0.984 and 0.977 respectively.The main control factors affecting the abrasiveness of rocks in each state were determined and the parameter fitting model was established,and the goodness of fit in dry,saturated and mud saturated states were 0.962,0.901 and 0.893 respectively.关键词
钻井法凿井/西部煤矿立井/细粒砂岩/磨蚀特性/物理力学特性Key words
drilling sinking/western coal mine shaft/fine grained sandstone/abrasion characteristics/physical and mechanical characteristics分类
矿山工程引用本文复制引用
葛栋梁,林键,李湘炜,奚肖强..钻井法条件下西部矿区细粒砂岩物理力学与磨蚀特性研究[J].广西科技大学学报,2025,36(3):41-51,11.基金项目
国家自然科学基金青年科学基金项目(52304073) （52304073）
安徽省自然科学基金青年科学基金项目(2208085QE142)资助 （2208085QE142）
