考虑温度影响的竖井井筒运行期应力状态分析  

Analysis on Stress State of Shaft During Operation Period Considering the Influence of Temperature

作　　者：徐衍 周晓敏 马文著[1] 和晓楠 XU Yan;ZHOU Xiaomin;MA Wenzhu;HE Xiaonan(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Key Laboratory of Urban Underground Space Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]北京科技大学城市地下空间工程北京市重点实验室,北京100083

出　　处：《矿业研究与开发》2021年第2期52-60,共9页Mining Research and Development

基　　金：“十三五”国家重点研发计划课题(2016YFC0600803);国家自然科学基金项目(51678048);中央高校基本科研业务费专项资金项目(FRF-BD-18-007A).

摘　　要：为了研究竖井井筒运行期温度及围岩性质随时间变化对井壁受力情况的影响,应用弹性力学及热传导原理将井壁与围岩两者统一建立模型,推导出井壁及围岩的温度应力表达式。推导过程中考虑了围岩及井壁的蠕变性质,分析得出运行期井壁及围岩的变温场为季节性的周期变化,围岩变温随着与井筒中心距离的增大而最终趋向于零;考虑时间因素时,井壁的应力场与围岩力学蠕变参数有关,设计井壁时应考虑围岩的蠕变参数。In order to study the influence of temperature and surrounding rock properties changing with time on the stress of shaft wall during the operation period of shaft,an unified model of shaft wall and surrounding rock was established by applying the principles of elasticity and heat conduction.Then,the expression of temperature-stress of shaft wall and surrounding rock was derived.In the process of derivation,the creep properties of surrounding rock and shaft wall were considered.It is concluded that the temperature variation field of shaft wall and surrounding rock during operation period is seasonal and periodic,and the temperature variation of surrounding rock tends to be zero with the increase of the distance from the shaft center.Considering the time factor,the stress field of shaft wall is related to the creep parameters of surrounding rock mechanics,and the creep parameters of surrounding rock should be considered in the design of shaft wall.

关 键 词：坚井 井壁 温度应力 蠕变 井壁设计 

分 类 号：TD352[矿业工程—矿井建设]