竖向直排人工冻结施工土体温度及冻胀力  

Soil temperature and frost heaving force in antificial vertical straight multi-row freezing construction

作　　者：刘波[1,2] 李岩[1] 戴华东[1] 李晓渊[1] 赵璐[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]深部岩土力学与地下工程国家重点实验室,北京100083

出　　处：《煤炭学报》2013年第A01期70-75,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50974126);教育部科学技术研究重点资助项目(109034);教育部博士点基金资助项目(20110023110004)

摘　　要：针对直排竖向全长冻结管布置方式,进行了冻结壁形成过程、温度分布、冻结锋面移动规律研究,根据冻胀力计算原理,基于符合工程实际的合理简化,推导出竖向直排冻结壁情况下的温度分布和冻胀力计算公式,给出了冻结壁周边任意位置的土体冻胀力估计值。对双树子煤矿斜井冻结工程进行了理论预测,理论计算与现场实测结果吻合较好,验证了本文理论公式的科学性和可行性。This paper focused on the research of frozen wall made of full length freezing multi-rows pipes in vertical direction arrangement.The frozen wall＇s forming process,temperature distribution and frost frontal surface＇s movement was analyzed.According to the available frost heaving force analytical equations,the simplification hypothesis adopted here comply with engineering practice.Further,the temperature distribution and frost heaving force analytical model were presented.The estimated values of soil frost heaving force in any frozen wall surrounding position were then obtained.The temperature and frost heaving forces monitoring of Shuangshuzi Coalmine inclined shaft freezing project were presented,the comparison on the field tested data and the analytical results shows good agreement,and the feasibility of the analytical calculations under the simplified assumptions is verified.

关 键 词：竖向直排冻结 人工冻土 冻胀力 冻结锋面 

分 类 号：TD265.34[矿业工程—矿井建设]