钻孔电视在地下工程围岩稳定性计算中的应用  

Bore-Hole TV Exploration Technology and Its Application to Calculation of Surrounding Rock Stability in Underground Engineering

作　　者：张东明[1] 齐消寒 尹光志[1] 李耀基[2] 李小双[2] 

机构地区：[1]重庆大学资源及环境科学学院,重庆400044 [2]云南磷化集团有限公司,云南昆明650600

出　　处：《昆明理工大学学报（自然科学版）》2013年第6期28-32,47,共6页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家科技重大专项(2011ZX05040-001-005);国家科技支撑计划(2011BAB08B01;2013BAB07B06)

摘　　要：针对晋宁2号坑倾斜中厚矿体地下开采中的稳定性问题,通过现场勘查、室内试验以及数值模拟,对倾斜中厚磷矿体地下开采围岩稳定性进行计算.以往的计算中,选取的模型参数实际是岩石试样的力学参数,需要进行数学折算,才能应用于天然岩体.本文利用钻孔电视对现场进行钻孔勘探,结合Hoek-Brown经验公式,对岩石试样的力学性质进行评估和修正,使岩体力学参数更具合理性,进而对地下工程围岩稳定性进行数值模拟分析,可以得到更真实的计算结果.The stability of the Jinning No. 2 pit inclined medium thick ore body is studied through calculation of the stability of the inclined surrounding phosphorus ore body by means of field investigation, indoor experiment and numerical simulation. In previous calculations, the actual model parameter is the mechanical parameter of rock samples, which requires mathematical conversion before it can be applied to natural rock. Combined with Hoek -Brown empirical formula, borehole TV is adopted in the drilling exploration to evaluate and modify the mechanical parameters for ensuring their reasonableness. The numerical simulation analysis of the stability of the surround rock in underground engineering is finally carried out to obtain accurate calculation.

关 键 词：钻孔电视 稳定性分析 数值模拟 地下工程 

分 类 号：TD871[矿业工程—非金属矿开采]