冬瓜山铜矿采空区分布特征及充填治理方案设计
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摘要
冬瓜山铜矿早期开采多采用阶段矿房法和浅孔留矿法,遗留了大量老采空区;该矿新区采用阶段空场嗣后充填采矿法生产,基本处于采充平衡状态,不存在采空区。结合现场勘查成果,详细分析了东、西狮子山矿段,大团山矿段,老鸦岭矿段,桦树坡矿段以及冬瓜山矿段的生产现状及采空区分布特征。在此基础上,结合矿山现有的充填系统,设计了采空区充填方案。研究表明:大团山矿段和桦树坡矿段宜采用灰砂比1∶6尾砂胶结充填和灰砂比1∶15尾砂微胶充填法进行采空区治理,老鸦岭矿段可全部采用灰砂比1∶15尾砂微胶充填采空区,冬瓜山铜矿新区宜采用灰砂比1∶6尾砂胶结充填和1∶15尾砂微胶充填采空区,也可与矸石充填法相结合对采空区进行治理。
Stage chamber mining method and shallow-hole shrinkage mining method are used in the early stage of Dongguashan Copper Mine,a large number goafs are remained; the sublevel open-stope filling mining method is adopted in the new mining area of Dongguashan Copper Mine,the goal of equilibrium between mining and filling is realized,therefore,the goaf is not existed in the new mining area. Based on the field investigation results,the production status and goaf distribution characteristics of East Shizishan and West Shizishan ore section,Datuanshan ore section,Laoyaling ore section,Huashupo ore section and Dongguashan ore section are studied. Based on the above discussion results,combing with the existing filling system of the mine,the detailed filling scheme of the goafs existed in the above ore sections are designed. The study results show that tailings cemented filling method( cement-sand ratio is 1∶ 6) and tailings microgel filling method( cement-sand ratio is 1∶ 15) can be used to deal with the goafs in Datuanshan ore section and Huashupo ore section; the goafs in Laoyaling ore section can be treated by only using tailings microgel filling method( cement-sand ratio is 1 ∶ 15); and tailings cemented filling method( cement-sand ratio is 1∶ 6),tailings microgel filling method( cement-sand ratio is 1 ∶ 15) and gangue filling method can be used to deal with the goafs in Dongguashan ore section.
Stage chamber mining method and shallow-hole shrinkage mining method are used in the early stage of Dongguashan Copper Mine,a large number goafs are remained; the sublevel open-stope filling mining method is adopted in the new mining area of Dongguashan Copper Mine,the goal of equilibrium between mining and filling is realized,therefore,the goaf is not existed in the new mining area. Based on the field investigation results,the production status and goaf distribution characteristics of East Shizishan and West Shizishan ore section,Datuanshan ore section,Laoyaling ore section,Huashupo ore section and Dongguashan ore section are studied. Based on the above discussion results,combing with the existing filling system of the mine,the detailed filling scheme of the goafs existed in the above ore sections are designed. The study results show that tailings cemented filling method( cement-sand ratio is 1∶ 6) and tailings microgel filling method( cement-sand ratio is 1∶ 15) can be used to deal with the goafs in Datuanshan ore section and Huashupo ore section; the goafs in Laoyaling ore section can be treated by only using tailings microgel filling method( cement-sand ratio is 1 ∶ 15); and tailings cemented filling method( cement-sand ratio is 1∶ 6),tailings microgel filling method( cement-sand ratio is 1 ∶ 15) and gangue filling method can be used to deal with the goafs in Dongguashan ore section.
引文
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[2]王成龙,王颍.平底结构浅孔留矿法在金陶公司二矿区的应用[J].现代矿业,2015(6):210-211.
[3]宋甫,周益龙,江飞飞.浅孔留矿法在急倾斜薄至极薄矿脉开采中的应用[J].现代矿业,2015(6):32-33.
[4]李月生.冬瓜山铜矿主井地下水灾害治理方案[J].现代矿业,2017(6):259-260.
[5]施发伍.冬瓜山铜矿采空区治理及稳定性研究[J].现代矿业,2007(11):57-60.
[6]方德求.冬瓜山铜矿老鸦岭矿段地表沉降监测[J].现代矿业,2015(8):118-119.
[7]段宗银,施发伍,张良贵.冬瓜山花树坡矿床-580 m以下中段开采方案探讨[J].金属矿山,2009(2):27-29.
[8]周开旭,王小忠,刘允秋.某地下铁矿50 m中段采空区探测及治理方案[J].现代矿业,2017(8):248-249.