采场结构参数优化的Mathews稳定图法

Mathews Stability Diagram Method for Optimization of Stope Structure Parameters

由于开采技术优化和开采设备的更新,九仗沟金矿开采过程中出现矿房设计过于保守、开采成本过高等问题。针对九仗沟金矿破碎带内矿体开采的相关问题,进行地下矿岩地质信息的编录,调查统计出Mathews稳定图法所需要的参数。根据这些参数,应用Mathews稳定图法中稳定系数的计算方法计算出每个矿房的稳定系数,然后通过矿房稳定系数在Mathews稳定图上计算出每个矿房的水力半径值和极限跨度。研究结果表明:矿房的极限跨度为7.5m。为保证安全生产,实际生产中矿房跨度应该控制在7.5m以下。

Due to the optimization of mining technology and the updating of mining equipment,the problems of over-conservative ore chamber design and over-high mining cost occurred in the mining process of Jiuzhanggou gold mine.Aiming at the related problems of ore body mining in the broken belt of Jiuchanggou Gold Mine,the geological information of underground ore and rock was compiled,and the parameters required by the Mathews stability diagram method were investigated and calculated.According to these parameters,the stability coefficient of each chamber was calculated by using the calculation method of stability coefficient in the Mathews stability diagram method,and then the hydraulic radius value and limit span of each chamber were calculated on the Mathews stability diagram by using the stability coefficient of each chamber.The results show that the limit span of the chamber is 7.5 m.In order to ensure safe production,the actual span of the ore house should be controlled below 7.5 m.