三山岛金矿上覆断层赋存状态对巷道稳定性的影响  

Influence of the Occurrence Status of Overburden Fault on Roadway Stability in Sanshandao Gold Mine

作　　者：田莉梅 张英[1] 张景华[3] 

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]廊坊师范学院建筑工程学院,河北廊坊065000 [3]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《金属矿山》2018年第1期178-182,共5页Metal Mine

摘　　要：大量工程实践表明,断层对地下巷道围岩稳定性有决定性的影响。以三山岛金矿深部主要断层F1,F2及F3为工程背景,采用数值模拟的方法研究断层倾角0°、50°、90°,水平断层分别距巷道顶板5、10、15 m,断层厚度分别为10、15、20 m等多种工况下的巷道掘进过程,对照无断层情况下的巷道稳定性,分析断层倾角、断层距巷道顶板的距离、断层的厚度对巷道围岩稳定性的影响。得出主要结论:倾角增大的过程中巷道的两帮收敛随之增大,断层厚度对巷道稳定性的影响主要体现为巷道顶板沉降的增大,断层距巷道顶板10 m的范围内,对巷道的安全掘进产生影响需要支护加固。Large number of Engineering practices show that the influence of faults on the roadway stability is significant. Taking the main faults F1 ,F2 and F3 in Sanshandao Gold Mine as the engineering background, the roadway excavation process is conducted numerical simulation under the conditions of the fauhs with dip angle of 0° ,50° ,and 90° ,5 m, 10 m and 15 m away from roadway roof to horizontal faults,the faults with the thickness of 10 m, 15 m and 20 m, the influence of fault dip angle,distance of roadway roof and faults and fhults thickness on roadway stability is discussed by comparing with the roadway stability in the absence of fatdts. The study resuhs show that eonvergence of the both sides of roadway ean be increasing with lhe increasing of fault dip angle;the main manifestation of the influence of faults thickness on roadway stability is the subsid- ence increasing of roadway roof;the influence of the distance of roadway roof to fauh within 10 m on safety roadway excavation is significant, therefore, some related supporting measures should be taken effectively.

关 键 词：深部开采 断层 赋存状态 巷道稳定性 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]