为解决贵州省的“难以实现机械化开采的关键4%煤层”，主要是倾角大于60°的急倾斜薄及中厚煤层机械化开采的难题，首次提出了倾角大于60°的急倾斜薄及中厚煤层基于金刚石串珠绳锯的工作面无人化巷道放顶煤开采方法。系统阐述了改造广泛应用于地面采石场、桥梁工程等的金刚石串珠绳锯为液压动力的方法，以便满足煤矿井下瓦斯环境的使用要求；分析了基于金刚石串珠绳锯的无人工作面巷道布置系统及通风系统；详细介绍了应用于采煤工作面的金刚石串珠绳的结构特点、安装工艺、切割方法以及回采工艺；研究了金刚石串珠绳锯对倾角大于60°的急倾斜薄及中厚煤层巷道放顶煤工作面煤体与顶底板的分离切割、对煤体内部进行预切割、预破碎的方法，从而达到提高巷道放顶煤无人工作面的区段高度，提高采出率，降低含矸率的目的，进而实现急倾斜薄及中厚煤层的安全高效开采；研究了巷道放顶煤液压支架与金刚石串珠绳锯的工序配合关系以及巷道放顶煤液压支架沿走向布置时与刮板输送机的配合关系；通过与倾角大于60°的急倾斜薄及中厚煤层的其他开采方法的比较，论证了基于金刚石串珠绳锯的急倾斜薄及中厚煤层工作面无人化的高效、安全、机械化开采的可行性及优越性，为后续急倾斜薄及中厚煤层智能化开采方法的研究提供了机械化基础。

Regarding the problem of “key 4% coal seam which is difficult to realize mechanized mining”, it mainly refers to the mechanizedmining method of steeply inclined thin and medium thick coal seam with dip angle greater than 60°. For the first time, it puts forwardthe unmanned mining method in roadway for steeply inclined thin and medium thick coal seam with dip angle greater than 60° based onthe beaded wire saw. It presents the idea to modify the beaded wire saw as hydraulic drive to meet the requirements of underground coalmine which is widely used in ground quarries and bridge engineering. It analyzes the roadway system and ventilation system, and introducesthe installation process, cutting process and mining method for the unmanned working face in steeply inclined thin and mediumthick coal seam based on the modified diamond beaded wire saw; In order to improve section height, mining efficiency as well as to reducethe gangue content of coal carving face in roadway, this paper studied the separation of coal seam from top to floor, and pre-cutting ofthe coal to pieces of steeply inclined thin and medium thick coal seam with dip angle greater than 60° by adopting the auxiliary measuresof beaded wire saw, then the safe and efficient mining method of steeply inclined thin and medium thick coal seam can be realized; It studies the cooperation between top coal caving hydraulic powered supports in roadway and beaded wire saw, and the relationship between theconveyor and hydraulic powered supports arranged along the roadway; Through studying of the differences between top coal caving inroadway based on beaded wire saw and other mining methods of steeply inclined thin and medium thick coal seam with dip angle greaterthan 60°, it reached the feasibility of unmanned efficient coal mining method of steeply inclined thin and medium thick coal seam usingbeaded wire saw. Most importantly it provides the mechanized mining foundation for the subsequent research of intelligent mining methodfor steeply inclined thin and medium thick coal seam with dip angle greater than 60°.

0 引言
1 巷道布置系统
1.1 基于串珠绳锯的无人工作面采煤方法概况
1.2 基于串珠绳锯的无人工作面巷道布置系统
1.3 基于金刚石串珠绳锯的无人工作面通风系统
2 基于金刚石串珠绳锯的煤体切割技术
2.1 串珠绳的结构
2.2 串珠绳锯切割工艺
2.2.1 串珠绳锯的安装
2.2.2 串珠绳的安装
2.2.3 回采工艺特点
2.2.4 串珠绳锯的液压动力系统
2.3 改造后的串珠绳锯的特点
3 巷道放顶煤工艺
3.1 巷道放顶煤液压支架布置方式
3.2 巷道放顶煤液压支架结构
3.3 串珠绳锯等与液压支架的配合
4 基于金刚石串珠绳锯的无人工作面主要优缺点分析
4.1 与其他急倾斜煤层采煤法的比较
4.2 该无人工作面主要技术优势分析
5 结论