详情

原文传递 ANALYSIS ON THE INFLUENCE OF ROCK CREEP ON MECHANICAL BEHAVIOR OF SEGMENTAL LINING OF SHIELD MINE INCLINED SHAFT

题名：	ANALYSIS ON THE INFLUENCE OF ROCK CREEP ON MECHANICAL BEHAVIOR OF SEGMENTAL LINING OF SHIELD MINE INCLINED SHAFT
正文语种：	中文
作者：	QI Chun HE Chuan FENG Kun WANG ongbing YAN Qixiang HU Xiongyu
作者单位：	MOE Key Laboratory of Transportation Tunnel Engineering ,Southwest Jiaotong University, hengdu 610031 , hina
关键词：	shield method mine inclined shafts rock creep supporting structure mechanical characteristics
摘要：	It is a new topic constructing long inclined shafts using shield machine or TBM, which is of great significance to shortening shaft construction period, enhancing security and decreasing costs.When crossing through high in-situ stress of deep buried sections, the long-term security of shaft structure may be threatened by rock creep.A numerical model is established considering rock creep to study the influence of shaft depths and segment effective bending rigidity ratios to segment mechanical characteristic index, including bending moment, axial force and safety factor, based on the shield inclined shafts of Shenhua Xinjie Taigemiao Mine Project.The results show that the rock creep influence can last for about 30 days, which leads to the decreasing of maximum bending moment and to the increasing of the safety factor, while has a negligible impact on axial force.With the linear increase of shaft depth, the maximum bending moment as well as the axial force increase approximately linearly, while the safety factor decreases with a slower ratio.Segment effective bending rigidity ratios have a negligible impact on lining bending moment, axial force and safety factor.
会议日期：	20150909
会议举办地点：	南京
会议名称：	第八届中日盾构隧道技术交流会
出版日期：	2015-09-09
母体文献：	第八届中日盾构隧道技术交流会论文集