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七煤集团建设工程总公司是属于煤炭行业的企业,由于以往我们搞的都是煤矿工程的施工,对金属矿山工程的特殊性不熟悉,在我们所承建的山西省于泉银铜矿业有限公司施工,还沿用以往的施工方法,不考虑金属矿山工程的岩石自然条件和特性。在施工中由于掏槽方式选择不合理,致使爆破效率低下,严重影响了经济效益,金属矿山井巷施工中采用直眼掏槽比较合理的掏槽方式,则大大提高了爆破效率。以下就直眼掏槽爆破在井巷施工中的具体应用做以简要论述。直眼掏槽也叫垂直掏槽,就是掏槽眼垂直于
As a coal mine construction company, we are not familiar with the particularity of the metal mining project. In our project, Yuquan Silver and Copper Mining Co., Ltd. Company construction, but also follow the previous construction methods, regardless of the metal mining engineering rock natural conditions and characteristics. Blasting efficiency is low due to the unreasonable choice of undercutting method in construction, which has seriously affected the economic benefits. Blasting efficiency is greatly improved by adopting a reasonable undercutting method with straight-eye undercutting in the construction of metal mine shaft. Following on the straight hole cut blasting in the construction of the concrete application to do a brief discussion. Straight-eye cut is also called vertical cut, that is cut perpendicular to the slotted eye