某钨矿近水平薄矿体采矿方法选择及开采保障措施  

Selection of Mining Method and Mining Safeguard Measures for a Nearly-horizontal Thin Orebody in a Tungsten Ore

作　　者：郑迪 陈才贤 杨福斗 温世平 曹帅[1,2] ZHENG Di;CHEN Caixian;YANG Fudou;WEN Shiping;CAO Shuai(State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Nanwenhe Tungsten Mine,Zijin Tungsten Industry Group Co.,Ltd,Wenshan,Yunnan 663000,China)

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]北京科技大学土木与资源工程学院,北京100083 [3]文山麻栗坡紫金钨业集团有限公司,云南文山市663000

出　　处：《矿业研究与开发》2020年第8期1-4,共4页Mining Research and Development

基　　金：国家自然科学基金项目(51804017);中国博士后基金面上项目(2018M631341).

摘　　要：某钨矿矿体倾角为5°~10°,矿体厚度为0.5~1.0m,为缓倾斜乃至近水平薄矿体。为高效安全回采该薄矿体,提出了锚杆+穿带护顶分条双侧抛掷全面采矿法、锚杆+穿带护顶分条单侧抛掷全面采矿法、分区划块全面采矿法3种采矿方案,从技术、成本和安全性综合考虑,推荐选用锚杆+穿带护顶分条双侧抛掷全面采矿法,矿房尺寸为6~8m,矿房与矿房之间留设0.5~1.0m条柱,在矿房中间施工上底3.0m、下底2.0m、高2.0m的"倒梯形"巷道作为落矿的受矿巷。此外,针对顶板不稳固片岩和爆破作业对条柱和顶板的冲击破坏等隐患提出了安全措施。The dip angle of a tungsten orebody is 5°to 10°and the thickness of the orebody is 0.5~1.0 m.It is a gently-inclined and even nearly-horizontal thin ore body.In order to mine the thin orebody efficiently and safely,three mining schemes were put forward,including overall mining method of double sides throwing with bolt+strip roof protection,overall mining method of single side throwing with bolt+strip roof protection,and overall mining method of partition and division.From the comprehensive consideration of technology,cost and safety,the overall mining method of double sides throwing with bolt+strip roof protection was recommended.The room size is 6~8 m,a 0.5~1.0 mcolumn is set between the rooms,and an inverted trapezoid roadway with upper bottom of 3.0 m,lower bottom of 2.0 mand height of 2.0 mis constructed in the middle of the room as the receiving roadway for ore drawing.In addition,the safety measures are put forward for the hidden dangers of unstable roof schist and blasting impact on the pillar and roof.

关 键 词：近水平薄矿体 双侧抛掷全面采矿法 开采隐患源 

分 类 号：TD853.3[矿业工程—金属矿开采]