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我矿区施工条件很不利，在地层方面较为复杂。铝锌矿蕴藏在大破碎带内（断层），岩层为震旦纪灰岩，矽化程度较强，岩石硬度平均为6级，解理发育，纵横交错，质地硬、脆、碎，坍塌漏水现象严重。施工钻扎角度有60°，65°，70°，90°四种，平均孔深200米以上。在地理方面处于北满，气候严寒，用冲洗液钻进，时常发生冻结现象。在这种条件下施工，用一般钻进方法不能确保质量。同时生产情况很
I mine construction conditions are unfavorable, more complex in the strata. Al-Zn ore is contained in a large fracture zone (fault), Sinian limestone rock formation, the degree of silicification stronger, the average hardness of 6 rock, cleavage development, criss-cross, texture hard, brittle, broken, collapse leaking phenomenon serious. Construction drilling angle of 60 °, 65 °, 70 °, 90 ° four kinds of average hole depth of 200 meters. Geographically, in northern Manchuria, the climate is cold and drilling with flushing fluid often occurs. Construction under these conditions, the general approach can not be used to ensure the quality of drilling. At the same time production is very good