进路式胶结充填采矿人工假底稳定性力学分析

Mechanical Analysis of Stability of Artificial Bottom in Entrance Cemented Filling Mining

人工假底的稳定性是下向进路充填法安全高效开采的关键,文章以云南某铅锌矿为工程背景,为了确保开采过程中的安全,提高矿体回收率,应用弹性力学理论、薄板问题,建立人工假底力学模型,对该矿1880~1964m中段氧化铅锌矿回采过程中人工假底的稳定性进行理论计算分析。研究结果表明,该矿采用全进路胶结充填,人工假底能够保证回采期间的安全和稳定。

The stability of artificial false bottom is the key to safe and efficient mining by downward filling method.This paper takes a lead-zinc mine in Yunnan as an engineering background.In order to ensure the safety of mining process and improve the recovery rate of ore body,the mechanical model of artificial false bottom is established by applying elasticity theory and thin plate problem.The oxygen content in the mid-section of 1880~1964m of the mine is calculated.The stability of artificial bottom in the mining process of chemical lead-zinc mine is calculated and analyzed theoretically.The results show that the full-roadway cemented backfilling can ensure the safety and stability of the mining process.