采矿与安全工程学报2012，Vol.29Issue(4)：492-496,5.
富水基岩井筒冻结壁砂质泥岩力学特性试验研究
Experimental Study on the Sandy Mudstone Mechanical Properties of Shaft Sidewalls Under the Frozen Conditions
摘要
Abstract
Freezing method is an effective construction method to pass through the thickest alluvium in coal mine shaft construction. It is more necessary to study the mechanical properties in order to provide reasonable design parameters for shaft frozen sidewalls. Taking the frozen shaft project of Hujia River coal mine in Shaanxi Bingchang coal mine area as the project background, sandy mudstone of passing through the key shaft were obtained from the engineering site, the uni-axial compression tests and tri-axial compression tests were conducted under different frozen temperatures. The strength and defor-mation characteristics of sandy mudstone were analyzed of the same temperatures under the condition of different confining pressures and the same confining pressure in the condition of different tempera-tures. The result shows that the uni-axial strength and tri-axial strength of sandy mudstone increases with the freezing temperatures dropping. The main reason is mainly due to the peak intensity of sandy mudstone greatly improved by mineral contraction, ice strength and frost heave force with temperature decreasing.关键词
砂质泥岩/冻结/力学特性/试验研究Key words
sandy mudstone/ freezing condition/ mechanical properties/ experimental study分类
建筑与水利引用本文复制引用
杨更社,吕晓涛..富水基岩井筒冻结壁砂质泥岩力学特性试验研究[J].采矿与安全工程学报,2012,29(4):492-496,5.基金项目
国家自然科学基金项目(50974102,40872177) （50974102,40872177）
