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一、前言 顶板不稳定的缓倾斜薄矿体,在我国一般都应用壁式崩落法回采。根据我们对这类矿体实际考查和参阅有关文献认为,壁式崩落法生产工序多,顶板管理复杂,劳动生产率低,坑木消耗大,且矿石损失与贫化也高。如果采取较为有效的技术措施,搞好顶板管理,改用其它采矿方法,可能解决壁式崩落法的某些缺点。关键问题在于寻求顶板管理的新途径。
First, the foreword The roof is unstable and gently inclined thin ore body, generally used in our country wall caving method mining. According to the actual examination of this type of ore body and referring to the relevant literature, we believe that the wall caving method has many production processes, complex roof management, low labor productivity, expensive pit mining, and high ore loss and depletion. If we adopt more effective technical measures, do a good job of roof management and switch to other mining methods, we may be able to solve some of the shortcomings of the wall caving method. The key issue is finding new ways of roof management.