新城金矿主井附近工程爆破振动对其稳定性影响分析

金属矿山大多采用凿岩爆破法进行采准、切割和回采作业，评估爆破振动对附近既有工程（特别是主要开拓巷道）稳定性的影响，对于矿山生产建设的安全具有重要意义。新城金矿主竖井附近需要进行矿体回采和盲竖井断面刷大，为保证主竖井的稳定性，对矿体回采及盲竖井断面刷大的最大允许药量、同时爆破采场数、炮孔总数等爆破相关参数进行了理论分析，并结合现场监测得到的爆破振动衰减规律，评估了矿体回采和盲竖井断面刷大爆破振动对主竖井稳定性的影响。该方法为爆破振动影响的快速评价和爆破参数的初步设计提供了可行的手段。

Influence of Blasting Vibration Near Main Shaft on Its Stability in Xincheng Gold Mine

Most metal mines use rock drilling and blasting method for mining preparation, cutting and mining operations. Evaluating the impact of blasting vibration on the stability of nearby existing projects (especially the main development roadway) is of great significance for the safety of mine production and construction. Near the main shaft of Xincheng Gold Mine, the ore body needs to be mined and the section of blind shaft needs to be enlarged. In order to ensure the stability of the main shaft, the blasting related parameters such as the maximum allowable charge, the number of simultaneous blasting stopes and the total number of blast holes for ore body mining and blind shaft section are theoretically analyzed. Combined with the blasting vibration attenuation law obtained from field monitoring, the influence of blasting vibration of ore body mining and blind shaft cross-section enlargement on the stability of the main shaft is evaluated. This method provides a feasible means for rapid evaluation of blasting vibration and preliminary design of blasting parameters.