根据用户煤矿的煤层储存条件和工作面年产原煤70万t的总体目标要求,我们为其研制了ZY2000/12/26型掩护式液压支架。该支架适用于煤层厚1.4～2.2m,煤层倾角小于25°,坚硬系数f=1～3的煤层。它的使用大大减轻工人的笨重体力劳动,减少或杜绝冒顶事故。减少辅助人员和设备,简化了生 According to the user’s coal seam coal storage conditions and the face with an annual output of 700,000 tons of raw coal, the overall goal of the request, we developed a ZY2000 / 12/26 type of shield hydraulic support. The bracket is suitable for coal seam thickness of 1.4 ~ 2.2m, coal seam dip angle less than 25 °, the hard coefficient f = 1 ~ 3 seam. Its use greatly reduces the heavy labor of workers and reduces or eliminates incidents of falling roofs. Reduce support staff and equipment and simplify students