Development of fractures in soft rock surrounding a roadway and their control

• 作 者: Li Xuehua Yao Qiangling Man Ji
• 机 构: SchoolofMineralEngineering
• 出 处: 矿业科学技术：英文版
• 发表日期: 2011年4期
• 关键词: 围岩巷道 岩石破碎 控制裂缝 软弱 工程地质条件 最佳时间 注浆加固 巷道掘进 Soft rock roadway Interval fracture Frac
• 基金项目: Financial support for this work, provided by the National Natural Science Foundation of China （No. 50974118）, the Program for New Century Excellent Talents in University （No. NCET-09-0727）, the Progra

As the excavation of roadway,new fractures will be formed and the pre-existing fractures extend with the redistribution of stress in surrounding rocks.Eventually,fracture zone and bed separation are formed in rocks because of the developed fractures.There