多层岩盐矿爆破切割压裂工艺

A Stoping Technique of Blast Cutting for Multi layer Rock Salt Ores

多层岩盐矿（含芒硝矿）的开采，普遍采用分层建井回采工艺，即每回采一层盐，均需分别建一组回采井，回采费用高。该文介绍一种新的回采工艺——爆破切割全程裸露盐层，其特点是建一组回采井，采用爆破切割方法，将所有盐层裸露并予以回采，大大降低回采费用，提高回采速度。

The slice stoping method is extensively used for mining multi layer rock salt (containing mirabilite). However, it has high cost, because a series of stoping pits has to be respectively built up for each layer of salt in the stoping. In this paper, a new stoping technique is described, which includes building up a series of stoping pits and making all the salt layers exposed by blast cutting and than stoping. This method is characterized by the lower stoping cost and the high stoping speed.