宝日希勒露天煤矿南帮边坡靠帮开采方案
Mining plan for south slope of Baorixile Open-pit Coal Mine
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摘要: 为充分解决软岩露天煤矿端帮稳定性问题，选取宝日希勒露天煤矿南帮边坡作为工程背景，综合运用地质勘察、室内试验、数值模拟等手段方法，分析横采内排、追踪压帮对边坡稳定性的提升作用，提出合理的靠帮开采方案。研究结果表明：当排土工作线长度达到140 m时，南帮边坡可满足安全储备要求；同时，当内排追踪距离不超过35 m时，采场及内排土场对端帮的支挡效应显现明显；建议南帮排土工作线长度布设不小于140 m，内排追踪距离不超过35 m。Abstract: In order to fully solve the problem of end slope stability in soft rock open pit coal mine, this paper takes the south slope of Baorixile Open-pit Coal Mine as engineering background, analyzes the improving slope stability effect of horizontal mining internal dumping and tracking pressure and proposes a reasonable mining plan by the methods of geological surveys, laboratory tests, numerical simulations and so on. The results show that the south slope can satisfy the requirements of slope safety reserve when the length of the dumping line reaches 140 m. At the same time, the end slope supporting effect of stope and dumping site is obvious when the inner dumping tracking distance does not exceed 35 m. Therefore, it is recommended that the length of the south slope dumping line should be more than 140 m, and the inner row tracking distance should not exceed 35 m.
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