摘    要
国内薄煤层开采在许多矿井中都面临着很多的问题，而朔里矿区也是如此。随着矿井可采储量的日益枯竭，薄煤层的开采问题已越来越突出。 由于开采设备原因，对于1.3～1.5m的较薄煤层开采，机械化程度普遍不高，其生产效率也比较低。薄煤层开采制约了下序其它煤层的开采速度，直接影响着 矿井高产高效生产。较薄煤层使用大架型机械设备进行开采，不仅开采成本增高，而且顶板常会被切割，导致煤炭灰分增高，甚至资源不能得到回收。
目前国内的薄 煤层综采技术，尤其是综采机械化装备配套技术还很不成熟，正处于探索阶段。对于大倾角较薄煤层综采方面的现场技术实践就更少了， 其理论研究工作也相对薄弱。根据我们朔里矿业的自然资源情况，有些就属于大倾角薄煤层。因此，积极探索机械化开采途径就很有必要。
    本课题分析的在机械式采煤机基础上改成液压式的采煤机。主要进行了液压式俯采采煤机总体方案设计，液压式俯采采煤机截煤部结构设计，液压式俯采采煤机牵引部结构设计及计算。
 
关键词：煤层；开采；机械式；液压式

ABSTRACT
The thin coal seam mining are facing a lot of problems in many mines, and Shuoli kaolin and so. With the increasing depletion of the mine recoverable reserves, mining of thin coal seam has been more and more prominent. Because of mining equipment, for 1.3 ~ 1.5m of thin seam mining, the degree of mechanization is generally not high, the production efficiency is low. Thin coal seam mining restricts the speed of order other coal mining, directly affects the high production and high efficient mine. The thin coal seam with large mechanical equipment for mining, not only the mining cost increased, and the roof is often cut, resulting in coal ash content increased, and even the resources can not be recovered. Thin seam mining technology in China at present, especially the fully mechanized mining equipment technology is not very mature, is in the stage of exploration. For the practical field large inclination of thin seam mining area is less, the theoretical research is relatively weak. According to the mining of natural resources of our moon, some belong to the thin coal seam with large inclined angle. Therefore, it is necessary to explore the positive mechanized mining method.
Analysis on the mechanical coal mining machine based on the change of the coal mining machine hydraulic. Mainly to the overall scheme design of hydraulic shearer underhand, shearer cutting structure design of hydraulic bent mining, hydraulic down coal shearer structure design and calculation.
 
Keywords: coal seam; mining machinery; hydraulic;