解决减少煤柱的损失和地质条件复杂煤层开采问题途径之一是采用短壁开采法,采用卡拉岗达工学院设计的BM型采煤机。 BMφ—2型(图1)和BMφ—4型(图2)采煤机用于开采厚度为1.9～4米的地质条件复杂的缓斜和倾斜煤层的短壁工作面。两套BM—2型采煤机的试验样机和两台BMφ—4型样机于1977—1978年在《卡拉岗达》联合企业的《罗林斯卡亚》矿的。煤层进行了工业性试验,试验采用2M—81θ液压支架和C One of the ways to solve the problem of complex coal seam mining by reducing the loss of coal pillars and geological conditions is to adopt the short-wall mining method and adopt the BM shearer designed by Caragang Dagang Institute of Technology. The coal mining machines BMφ-2 (Fig. 1) and BMφ-4 (Fig. 2) are used for the mining of short-wall face with gently-inclined and inclined seam with complicated geological conditions ranging from 1.9 to 4 meters. Two prototypes of the BM-2 shearer and two BMφ-4 prototypes were manufactured at the “Rolls-ul-Kaya” mine of the “Cala Gangu” joint venture from 1977 to 1978. The coal seam was tested industrially using a 2M-81θ hydraulic support and C