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概述水力采煤是一种先进技术,它的运用和发展,使连续性和少工序的生产过程成为可能。在这基础上,不但能提高劳动生产率,而且大大改善矿工的劳动条件。我国多年来的生产经验证明,水力采煤能获得良好的技术经济指标。与普通机械采煤相比,单位工作面月产量提高150%以上,采区效率提高150～200%,坑木消耗降低70%左右,成本下降30%左右,而且有效地保证安全生产。目前由于设备还不够完善,维修工作量甚大,电耗亦比普通机械采煤高100～150%,回采率低5%左右,这些缺点在一定程度上影响了水力采煤的发展,在技术上还须进一步研究提高。水力采煤就是利用高压泵供给的高压水,经过水枪喷嘴形成一束强力的射流,冲击煤壁。煤受高压流
Overview Hydraulic coal mining is an advanced technology, its application and development, so that continuity and fewer processes of production process possible. On this basis, not only can improve labor productivity, but also greatly improve the working conditions of miners. Our production experience over the years has proved that hydraulic coal mining can obtain good technical and economic indicators. Compared with common mechanical coal mining, the unit working face monthly output increased by 150% or more, mining area efficiency increased 150 ~ 200%, pit consumption decreased by about 70%, the cost decreased by about 30%, and effectively ensure safe production. At present, due to inadequate equipment and heavy maintenance work, the power consumption is also 100% to 150% higher than that of ordinary coal mining and the recovery rate is about 5%. These shortcomings have affected the development of hydraulic coal mining to a certain extent, technically Still need further research and improvement. Hydraulic coal mining is the use of high-pressure pump to supply high-pressure water, water jets through the nozzle to form a strong jet, the impact of coal wall. Coal is subjected to high pressure flow