岩土力学2012，Vol.33Issue(5)：1395-1401,7.
软岩巷道锚注支护时机优化研究
Optimization of bolt-grouting time for soft rock roadway
摘要
Abstract
Bolt-grouting technology is an effective way to maintain the stability of soft rock roadway, and its effects rely heavily on the grouting time. The mechanical characteristics of ruptured soft rock reinforced by grouting are analyzed, and the rational grouting time for soft rock roadway is optimized by numerical simulation using the strain softening constitutive law in FLAC2D. The results show that as the grouting time lags, the infiltration scope of the grout in rock increases gradually but the strength of rock reinforced by grouting decreases dramatically, and the deformation of roadway decreases first and then increases. On the basis of this, a method integrating numerical simulation and monitoring for determining the rational bolt-grouting time is proposed and better results have been achieved in engineering practice. This method provides a favorable guidance for the construction and design of bolt-grouting support in soft rock roadway.关键词
软岩巷道/锚注支护/应变软化/支护时机/优化Key words
soft rock roadway/ bolt-grouting support/ strain softening/ support time/ optimization分类
矿业与冶金引用本文复制引用
陆银龙,王连国,张蓓,李玉杰..软岩巷道锚注支护时机优化研究[J].岩土力学,2012,33(5):1395-1401,7.基金项目
国家重点基础研究发展计划(973计划)资助项目(No.2010CB226805) （973计划）
国家自然科学基金项目(No.50874103) （No.50874103）
江苏省自然科学基金项目(No.BK2008135). （No.BK2008135）
