摘要
分析了钻井法凿井的井壁外载,特别是近年来研究厚表土层中井壁破裂机理时发现的竖直附加力.在已知外载条件下,研究了两种可行的井壁结构,即以增加井壁整体强度的"抗"型和安装竖向可缩装置的"让"型井壁结构的力学特性及适用条件.研究了安装竖向可缩装置井壁的井筒装备应采取的措施.认为当表土深度超过200m时,以安装竖向可缩装置的"让"型井壁结构为好.
The loads of shaft lining by drilling shaft sinking were analyzed, especially the vertical additional force discovered by researching into the breaking mechanism of vertical shaft lining in thick alluvium recently. The mechanics characteristics of two types shaft lining structure were studied: 'reducible' type structure and 'power support' type structure. Some measures to set up the shaft furniture of the vertical reducible equip were studied. The results of study and analysis indicate that priority is given to the 'reducible' type shaft lining structure while the deep alluvium depth is more than 200 m.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2005年第4期409-413,共5页
Journal of China University of Mining & Technology
基金
国家自然科学基金重点项目(50234030)
关键词
钻井法凿井
钻井井壁结构
深厚表土井壁外载
井壁竖向可缩装置
shaft drilling
lining structure of drilling shaft
loading of shaft lining in deep alluvium
vertical reducible equip of shaft lining
