摘要
某铁矿山于1980年开始投产,采用竖井开拓,采矿方法为空场法,截至目前形成了诸多采空区,其中上部一矿体回采结束后未及时处理,并且采空区已积水,而下部三矿体正处于回采阶段,其回采过程以及所留采空区可能对上部采空区造成扰动,具有导致上部采空区积水涌至现有回采范围的危险。为保障下部三矿体安全回采,消除上部采空区积水对下部矿体回采过程的安全威胁,采用现场调查、理论分析、定量与定性分析相结合的方式,综合分析了采空区自稳性、后续安全回采范围、综合处置技术方案等。研究表明:下部三矿体回采范围内的8个独立采空区暂时处于相对稳定状态,但长时间暴露会有顶板冒落的危险,其中KQ1#和KQ8#采空区影响波及上部一矿体采空区积水范围,其余6个采空区未波及上部采空区范围,通过技术分析,确定对KQ5#、KQ6#、KQ8#采空区进行充填处理,对KQ1#、KQ2#、KQ3#、KQ4#、KQ7#采空区进行封闭处理,能够保证上部采空区安全和下部三矿体后续回采工作安全,消除矿山开采安全隐患。
An iron ore mine began to bring into production in 1980.Shaft development and open stoping mining method is adopted.Up to now,many goafs of have been formed.The upper goafs of ore bodyⅠhas not been timely treated after the end of stoping,and the goaf has accumulated water,while the lower ore bodyⅢis in the stoping stage,the stoping process and the remaining goaf may cause disturbance to the upper goaf,which may cause the water in the upper goaf to rush to the stoping areas,and there are potential safety hazards.In order to guarantee the safety of the lower orebodyⅢstoping process and solve the security threats,this paper adopts the method of combining field investigation,theoretical analysis,quantitative and qualitative analysis to carry out the study of goaf self-stability analysis,follow-up safety mining area,comprehensive disposal measures.The study results show that the eight independent goafs are temporarily in a relatively stable state,but long time exposure can lead to risk of roof caving.The KQ1#and KQ8#goaf affect the upper goafs area and the remaining goafs will not affect the upper goafs.It can ensure the safety of the upper goafs area and the safety of the follow-up mining work by filling the KQ5#、KQ6#、KQ8#goafs and sealing off the KQ1#、KQ2#、KQ3#、KQ4#、KQ7#goafs.
作者
路洪斌
王星
杨家冕
孙国权
Lu Hongbin;Wang Xing;Yang Jiamian;Sun Guoquan(Department of Civil Engineering,Wanjiang University of Technology,Maanshan 243031,China;Sinosteel Maanshan Institute of Mining Research Co.,Ltd.,Maanshan 243000,China;State Key Laboratory of Safety and Health for Metal Mine,Maanshan 243000,China;National Engineering Research Center of Huawei High Efficiency Cyclic Utilization of Metal Mineral Resources Co.,Ltd.,Maanshan 243000,China)
出处
《金属矿山》
CAS
北大核心
2019年第11期35-42,共8页
Metal Mine
关键词
地下开采
采空区
空场法
充填
综合处置
Underground mining
Goaf
Open stoping method
Filling
Comprehensive disposal
