“三机”是指采煤机、液压支架、刮板输送机,是综采工作面的主要设备。其选型必须考虑配套关系、配套关系合理是提高综采工作面生产能力、实现高产高效的必要条件。一、“三机”选型1、采煤机的选型采煤机能适合的煤层地质条件,其主要参数(采高、截深、功率、牵引方式)的选取要合理,并有较大的适用范围;采煤机应满足工作面开采生产能力的要求,其生产能力要大于工作面设计能力;采煤机的技术性能良好,工作可靠,具有较完善的各种保护功能,便于使用 “Three machines ” refers to the coal shearer, hydraulic support, scraper conveyor, is the main equipment of fully mechanized mining face. Its selection must take into account the matching relationship, supporting a reasonable relationship is to improve the production capacity of fully mechanized mining face, to achieve the necessary conditions for high yield and efficiency. I. Selection of “Three Machines” 1. Selection of Shearer The selection of coal mining machine is suitable for the geological conditions of coal seam. The selection of the main parameters (mining height, cut-off depth, power and traction mode) should be reasonable, Large scope of application; Shearer should meet the requirements of face mining production capacity, its production capacity should be greater than the design capacity of the face; Shearer technical performance is good, reliable work, with more perfect various protection features, easy to use