大型露天煤矿拉铲开采工艺参数的计算方法

根据我国露天煤矿地质赋存特点，提出了拉铲倒堆开采工艺的联合作业方式，即露天煤矿上部剥离物和煤层采用某些开采工艺，最下部煤层上部的剥离物部分或者全部采用拉铲倒堆开采工艺。采用拉铲倒堆开采工艺时，倒堆剥离台阶采用抛掷爆破方式，将一部分剥离物直接抛掷到内排土场；然后配备大功率的推土机扩展平台，降低倒堆台阶高度；最后由拉铲将剩余的剥离物直接倒排至采空区。分析了露天煤矿拉铲开采工艺主要开采参数的确定原则，给出了主要参数的计算方法。

Calculation of Draglines Stripping System Process Parameters in Large-scale Opencast Mine

Integrated operation pattern of Draglines Stripping System （DSS） is brought forward according to the deposit occurrence of surface coalmines in China. Some mining technologies are used in the upper part of the waste and the coal seams,while DSS is suitable for stripping the rock, all or part, above the roof of bottommost coal seam. After throwing blast, much more powerful dozers are used to lower the height and extend the width of stripping bench, and then draglines standing on the extended bench are used to extend the bench more widely and throw the waste directly to the dumping area. The main principles of the open coal mining technology draglines mining parameters are Analysed. The calculation method of main parameters is given.