Surface borehole synthesis tension deformation fracture time-space rule

• 作 者: Liu Jianzhong Sun Haitao Hu Qi
• 机 构: ChinaCoalResearchInstitute,PostDoctorMobileStationChongqingResearchInstituteofChinaCoalTechnology&am
• 出 处: 矿业科学技术学报：英文版
• 发表日期: 2012年4期
• 关键词: 地面钻孔 断裂时间 拉伸变形 合成 间规 断裂模型 岩层运动 工程实例 Surface boreholeMethane drawingSynthesis ten
• 基金项目: Financial supports for this work provided by the National Science and Technology Major Project，the National Great Research Foundation of China，the National Natural Science Foundation of China，are grat

In order to release the tension and shear effect of the superjacent rock strata movement during excavation in coal mine,protect the surface borehole case from fracturing fast and make a good use of the surface borehole during goaf methane drawing,a common