岩土力学Issue(7)：1965-1972,8.
基于巷道围岩自承特性的锚杆锚固效果研究
Study of bolt anchoring effect based on self-bearing characteristics of roadway surrounding rock
摘要
Abstract
The current researches on bolt anchoring effect are rarely concerned with self-bearing characteristics of whole anchorage surrounding rock. For its sensitive response to mechanical changes of surrounding rock bearing structures, tangential stresscurve with different bolt lengths and different bolt strengths is researched, which can provide important references to research the bolt anchoring effect. The curve shape of whole anchorage roadway is related to the anchorage end position in elastic and plastic surrounding rock. When bolt anchorage end is located in the plastic zone of surrounding rock, the peak value and its corresponding position ofcurve are slightly influenced. With the increasing of bolt anchorage end depth in the elastic zone, distribution curve ofwill have internal and external peak values from the surface to the depth of anchorage surrounding rock gradually; and its alternative elastic and plastic zones gradually appear. And bolt strength should match the self-bearing strength of surrounding rock. Accordingly, a new method to determine the bolt anchoring effect based on the double peak values of curve of anchorage surrounding rock is put forward, which can well explain the problems of canceling the systematic anchor bolts in weak strata.关键词
巷道围岩/锚固效果/切向应力/自承载特性Key words
surrounding rock of roadway/anchoring effect/tangential stress/self-bearing characteristics分类
建筑与水利引用本文复制引用
王斌,王卫军,赵伏军,樊宝杰,唐辉雄..基于巷道围岩自承特性的锚杆锚固效果研究[J].岩土力学,2014,(7):1965-1972,8.基金项目
国家自然科学基金项目(No.41272304，No.51374105)；中国矿业大学深部岩土力学与地下工程国家重点实验室开放基金资助项目(No. SKLGDUEK1214)；湖南省教育厅资助项目(No.12B045，No.12CY013)；湖南省科技厅资助项目(No.2013TP4057-2)。 （No.41272304，No.51374105）
