摘要
强降雨是诱发普朗铜矿井下冰碛补给型泥石流灾害的重要因素,以现场调查和室内模拟试验为研究手段,对普朗铜矿不同降雨强度条件下的井下冰碛补给型泥石流的启动机理进行研究。研究结果表明:1)强降雨为井下冰碛补给型泥石流形成提供水动力条件;2)纯矿石放矿过程中,地表冰碛物不会在矿石层中形成通道,在不同降雨强度下不会有井下泥石流的形成;3)地表冰碛物在矿石层中形成通道是井下泥石流形成的前提,有地表冰碛物放出时,室内降雨强度0.563 mL/min时会形成具有较大能量的泥石流,0.293 mL/min时会有泥石流发生的潜能,0.186 mL/min时不会形成井下泥石流。研究对井下泥石流启动机理探究具有一定借鉴作用,同时对矿山泥石流灾害的预防、治理和管理措施具有指导意义。
Heavy rainfall is an important factor inducing the moraine-supply-type debris flow disaster in the underground of Prang Copper Mine.Field investigations and laboratory simulation tests are used as research methods to study the start-up mechanism of underground moraine-supply debris flow at different rainfall intensity conditions in the Prang Copper Mine.The results show that:1)heavy rainfall provides hydrodynamic conditions for the formation of downhole moraine-supply debris flow;2)during the process of pure ore mining,surface moraine does not form a channel in the ore layer,under different rainfall intensities and there will be no formation of downhole debris flow;3)The formation of channels by surface morain in the ore layer is a prerequisite for the formation of downhole debris flow.When the surface moraine is released,a large energy will be formed when the indoor rainfall intensity is 0.563 ml/min debris flow,there is potential for debris flow to occur at indoor rainfall intensity of 0.293 ml/min,and there will be no downhole debris flow at indoor rainfall intensity of 0.186 ml/min.This paper provides a certain reference for the exploration of the mechanism of underground debris flow initiation,and also provides guidance for prevention,management and management measures of mine debris flow.
作者
牛向东
谢晋谊
侯克鹏
李争荣
汪德文
梁维
NIU Xiangdong;XIE Jinyi;HOU Kepeng;LI Zhengrong;WANG Dewen;LIANG Wei(School of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Diqing Nonferrous Metals Co.,Ltd.,Diqing 674400,China;China Nonferrous Metals Industry Kunming Survey Design&Research Institute Co.,Ltd.,Kunming 650051,China;Institute of Mining Engineering,Guizhou Institute of Technology,Guiyang 550003,China)
出处
《有色金属工程》
CAS
北大核心
2020年第7期100-106,共7页
Nonferrous Metals Engineering
基金
贵州省科技计划项目(贵科合LH字[2016]7107)
贵州省教育厅青年科技人才成长项目(黔教合KY字[2016]227)
贵州理工学院高层次人才科研启动经费项目(XJGC20190633)。
关键词
自然崩落法
井下泥石流
降雨强度
启动机理
试验研究
natural avalanche method
underground debris flow
rainfall intensity
starting mechanism
experimental study
作者简介
牛向东(1986—),男,博士,主要从事矿山岩石力学及工程稳定方面的研究;通信作者:侯克鹏(1966—),男,教授,主要从事矿山岩石力学及工程稳定方面等研究。
