特厚黏土层冻结压力研究与应用  

Research and application on freezing pressure of extra-thick clay layer

作　　者：盛天宝[1,2] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]河南煤业化工集团有限责任公司,河南郑州450046

出　　处：《煤炭学报》2010年第4期571-574,共4页Journal of China Coal Society

基　　金：河南省2006年科技发展计划项目(064460002)

摘　　要：实测了河南赵固一矿主、副、风井197～507m共7个黏土层的冻结压力。测试结果表明,冻结压力随测层埋深增大,同一层位的冻结压力呈非均匀分布,局部存在较高的集中应力。分析了特厚黏土层冻结压力变化规律及显现特征。应用黄金分割理论确定测层冻结压力值,提出了不同深度冻结压力参考值。Freezing pressure of seven clay layers was measured for main shaft,auxiliary shaft and ventilation shaft 197~507 m in No.1 Mine of Zhaogu,Henan Province.The test results indicate that the freezing pressure increase with layer depth,freezing pressure on the same level is not evenly distributed and exist higher concentration stress locally.Analyzed the changes law and show characteristics of freezing pressure in extra-thick clay layer.According to Golden Section Theory,the freezing pressure value of measured layer was definited and freezing pressure reference value at different depths was recommended.

关 键 词：特厚黏土层 冻结压力 外层井壁 

分 类 号：TD265.34[矿业工程—矿井建设]