Vibration classification screen is the key to ensure the quality of washing raw coal and product raw coal in the process of changing from run-of-mine coal to washing raw coal.
振动分级筛在矿井毛煤转化为入洗原煤过程中是保证入洗原煤和产品原煤质量(粒度合格)的关键设备。
This text explains to Xutuan coal mine west breeze well and main well a method, error margin for of run-through measuring analysis with anticipate.
介绍了许疃煤矿西风井与主井之间的贯通测量的方法、误差分析和预计。
According to characteristics of the coal mine production, the article analyses the power supply system in coal mines and discusses the economic run mode of the transformers and the lines.
根据煤矿生产的特点，对煤矿供电系统进行了分析，对变压器、线路的经济运行方式进行了探讨。
The power run steadily, and its brake function was improved apparently, and satisfied with require of safety in production of coal mine.
改进后的制动电源制动性能有了明显提高，运行稳定，能满足煤矿安全生产的要求。
By influencing of the tunnel pressure in Yuanzhuang Coal Mine, the end frame of the main belt conveyor became inclination and deformation. It made belt run slantingly and wear away seriously.
袁庄煤矿主运带式输送机机尾架，由于受巷道压力的影响，造成机尾架倾斜变形，使输送带严重跑偏，磨损严重。
Xiyu coal mine located on the UN principal run-off zone of Jinci Karst water subsystem of Xishan Karst water system in Taiyuan region.
西峪煤矿位于太原西山岩溶水系统的晋祠岩溶水亚系统内的非主径流带上。
An open mine, especially a coal mine, whose seams or outcrops run close to ground level and are exposed by the removal of topsoil and overburden.
露天矿产，尤指煤矿，它的煤层或露头接近于地表，除去表土和覆盖层即可发现。
An open mine, especially a coal mine, whose seams or outcrops run close to ground level and are exposed by the removal of topsoil and overburden.
露天矿产，尤指煤矿，它的煤层或露头接近于地表，除去表土和覆盖层即可发现。
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