摘要
岩体内部赋存的随机不连续面、结构面及软弱面等会降低岩体强度,减弱岩体的稳定性,开展岩体结构面的研究工作可为明确岩体力学参数、进行岩体稳定性分级与分区奠定基础。以昆阳磷矿二矿采场边坡岩体为背景,分别采用详细线观测法、极点密度图法、赤平极射投影图法等对岩体的结构面进行调查,并分析岩体结构面对采场边坡的稳定性影响。结果显示,该矿山采场边坡岩体的结构面较发育,大多为陡倾类型,且以闭合节理为主,结构面分布对采场的破坏方式主要是片帮和冒顶。
The random discontinuity plane,structural plane and weak plane in rock mass will reduce the strength of rock mass and weaken the stability of rock mass.The research work of rock mass structural plane can lay the foundation for clarifying the mechanical parameters of rock mass and classifying and zoning the stability of rock mass.Based on the rock mass of stope slope in No.2 Mine of Kunyang Phosphate Mine,the structural plane of rock mass was investigated by detailed line observation method,pole density map method and stereographic projection map method,and the influence of rock mass structure on the stability of stope slope was analyzed.The results show that the structural plane of the slope rock mass in the mine is relatively developed,mostly steep type,and mainly closed joints.The failure mode of the structural plane distribution on the stope is mainly spalling and roof caving.
作者
王万禄
王黎蝶
侯克鹏
夏钢源
WANG Wanlu;WANG Lidie;HOU Kepeng;XIA Gangyuan(Yunnan Phosphate Group Co.,Ltd.;School of Land and Resources Engineering,Kunming Universi-ty of Science and Technology)
出处
《现代矿业》
CAS
2022年第8期111-114,118,共5页
Modern Mining
关键词
岩体结构面
极点密度图
赤平极射投影图
岩体稳定性
structural plane of rock mass
pole density map
stereographic projection map
rock mass stability
