浅埋深水体下巷道掘进安全性论证与实践

Demonstration and practice of roadway safety under water

通过对荥经县更兴煤业有限责任公司开采技术条件条件的分析,得出了主平硐的开挖对余家坝水电站引水渠及余家坝小溪产生影响的条件;通过松动圈法计算出了主平硐开挖后所形成的松动圈半径,通过自然平衡拱法计算出了主平硐开挖后所形成的平衡拱高度,并提出了主平硐掘进方案的可靠性分析与安全技术措施,为该矿及其它类似条件下的巷道掘进设计提供了参考。

Through the analysis of Yingjing County Hing more coal limited liability company mining technology conditions, the influence of theexcavation of the main adit of Yujiaba Hydropower Station Diversion Canal and Yujiaba stream generated by conditions; loose circle method tocalculate the radius of loose zone formed by the main adit excavation, calculated the formation of the main adit excavation after the balancearch height through natural arch method, and puts forward the main adit excavation scheme of the reliability analysis and safety technicalmeasures, providea reference for the design of the mine roadway excavation and other similar conditions.