隧道初期支护中带钢板连接的锁脚小导管

Bottom-fixed Small-type Conduit with Joint of Steel-plate Employed in Initial Support

隧道初期支护中使用锁脚锚杆是近几年公认的一项技术,但其存在的不足也是相当重大的技术难题。隧道新型初期支护的构件(带钢板连接的锁脚小导管)在理论与实践的联系中应运而生,经过实践证明,该构件安全可靠,操作简便,兼顾了安全、质量、进度、经济效益、社会效益等方面的要求。

It has been a recognized technology in recent years for use of bottom-fixed anchor bolt in the initial support of tunnel.However,this technology has faults,which has also been known as a rather hard technical problem. In view of it,a new type of the initial tunnel support substitute,which has been come into being and called bottom-fixed small-type conduit with the joint of steel-plate at the proper time. It has been proved by theory and practice that the invented component is safe and reliable,easy to operate,meeting the requirements of safety,quality,progress,economic benefit,social benefit and so on.