村庄下巷道布置及炮掘对地面建筑物的安全影响分析

Analysis of the Influence of Roadway Layout and Blasting Excavation on the Safety of Ground Buildings Under the Village

以庄子河矿井开拓巷道局部布置在村庄下为工程背景,分析了村庄下巷道布置及炮掘对地面建筑物的安全影响,综合巷道顶板岩性、支护方式、留设煤柱宽度等因素分析认为,庄子河矿井开拓大巷村庄下布置对地面建筑物没有影响,理论计算了保护对象所在地安全允许质点振速,炮掘产生的质点震速远小于民用建筑物允许的震速。综上表明,庄子河矿井村庄下巷道布置及炮掘对地面建筑物不造成威胁。

Taking the local layout of the development roadway under the village in Zhuangzihe Mine as the engineering background,the influence of roadway layout and blasting excavation under the village on the safety of ground buildings is analyzed.Based on the analysis of the factors such as the lithology of roadway roof,support mode,width of coal pillar and so on,it is considered that the layout of the development roadway under the village in Zhuangzihe Mine has no effect on the ground buildings,and the allowable particle vibration velocity at the location of the protected object is calculated theoretically.The shock velocity of particles produced by blasting is much less than that allowed by civil buildings.To sum up,the roadway layout and blasting excavation under the village of Zhuangzihe Mine do not pose a threat to the ground buildings.