冻结法凿井中永久井架基础局部保温数值计算分析  

Numerical Calculation and Analysis of Local Thermal Insulation of Permanent Derrick Foundation in Freezing Method

作　　者：李昆 

机构地区：[1]北京中煤矿山工程有限公司,北京100013 [2]煤矿深井建设技术国家工程实验室,北京100013

出　　处：《煤炭技术》2016年第8期36-37,共2页Coal Technology

摘　　要：部分采用永久井架进行冻结凿井工程的冻结管布置圈径已经扩大到永久井架基础的范围之内,前期的冻胀及后期的融沉会对永久井架基础造成极其不利影响,造成永久井架基础的抬升、下沉、偏斜等。对采用局部保温技术的冻结工程进行了数值计算分析,获得了采用局部保温措施后地层温度场的发展规律,可为类似工程的设计、施工提供参考。Part of the permanent headframe freeze sinking engineering ot ireezing pipe layout circle diameter has been expanded to the permanent headframe base within the scope of, pre freezing and post thawing will sink of permanent headframe base caused by extremely adverse effects, resulting in permanent headframe base of uplift and subsidence, inclination. Numerical analysis is carried out on the freezing engineering of local thermal insulation technology, and the development law of the formation temperature field is obtained by using the local thermal insulation measures, which can provide reference for similar engineering design and construction.

关 键 词：井架基础 局部保温 数值计算 

分 类 号：TD265.3[矿业工程—矿井建设]