布尔台矿12上302辅助运输顺槽片帮原因分析及支护参数设计

Cause Analysis and Support Parameter Design of 302 Auxiliary Transportation Slots in Boertai Mine 12

摘要: 神东矿区巷道支护设计很大程度上依赖于技术人员的工程判断力和实践经验，导致有些巷道支护效果不佳，有些设计参数偏于保守。因此，根据巷道所处的地质条件、应力环境和围岩力学性质，基于巷道服务年限、层位岩性、顶底两帮、地压影响、特殊区域等5个方面，进行巷道围岩稳定性整体分类和次分类，在围岩分类的基础上，进行巷道支护形式选择和参数设计，研发巷道差异支护设计系统，并结合巷道样本数据库，优选巷道支护方案，改变巷道围岩变形破坏和维护困难的状况。

Abstract: The design of roadway support in Shendong mining area relies heavily on the technical judgment and practical experience of technicians. As a result, some roadway support effects are not good, and some design parameters are conservative. Therefore, according to the geological conditions, stress environment and surrounding rock mechanics of the roadway, based on the service life of the roadway, the lithology of the horizon, the top and bottom gangs, the influence of ground pressure and the special area, the overall classification and sub-category are carried out. Based on the classification of surrounding rock, support parameters are designed, and differential support de-sign system is developed. Combined with the sample database of roadway, support scheme is op-timized to change the deformation and damage of surrounding rock and the difficult maintenance conditions.