特厚表土层削球式井壁底的受力机理及影响因素分析  

Analysis of Stress Mechanism and Influencing Factors for Snick Shaft Bottom in Special Thick Alluvium

作　　者：黄伟[1] 程桦[2] 荣传新[2] 

机构地区：[1]淮南联合大学建工系,安徽淮南232007 [2]安徽理工大学土木工程系,安徽淮南232001

出　　处：《矿冶工程》2008年第4期13-16,共4页Mining and Metallurgical Engineering

摘　　要：以拟建中的山东某矿风井(钻深760m左右)为原型,采用数值计算方法对削球式井壁底的受力机理及影响因素进行了系统研究,得出了影响削球式井壁底受力的主要因素,提出了改善井壁底受力状态的最佳圆心角概念,推导出最佳圆心角与厚径比的关系式,为今后特厚表土层钻井井壁底设计计算提供了参考依据。Taking an air shaft （with drilling depth of 760 m） planned to be constructed in a Shandong mine as a prototype, the stress mechanism and influencing factors of snick shaft bottom have been systematically studied with numerical method, obtaining principal influencing factors for the stress exerting on the snick shaft bottom. A concept of optimal central angle was proposed to improve the stress state on the shaft bottom. The relationship between optimal central angle and ratio of thickness-radius was deduced, providing a reference for the future＇s calculation in the design of drilling shaft bottom.

关 键 词：钻井法凿井 特厚表土层 削球式井壁底 最佳圆心角 数值计算 

分 类 号：TU311[建筑科学—结构工程]