大倾角智能工作面刮板输送机“上窜下滑”自动化控制研究与应用

Research and application of automatic control of scraperconveyor up-and-down moving in steeply inclined intelligent working face

针对复杂煤层赋存条件下,特别是大倾角、多断层的工作面实现全工作面自动化面临着诸多技术难题,以国家能源集团宁夏煤业有限责任公司枣泉煤矿220608综采工作面为工程背景,研究了大倾角工作面支架防倒防滑以及刮板输送机“上窜下滑”自动化控制的重点和难点,建立了刮板输送机“上窜下滑”工艺管控策略数据模型及工艺控制逻辑体系,通过刮板输送机“上窜下滑”趋势判断方法,形成了跟机推刮板输送机、跟机拉架工艺控制方案,建立了大倾角工作面常规拉架、防止刮板输送机下滑调架以及防止刮板输送机上窜调架3种拉架动作控制逻辑。实际工程应用表明,工作面平均开采速度可达6.3 m/min,最高产量可达11700 t/d,实现了工作面高清可视化,并通过管理创新保障了大倾角工作面智能开采常态化运行。

In view of many technical problemsin the process of realizing automation of whole working face with complex coal seam occurrence conditions,especially for those with large dip angle and multiple faults,taking 220608 steeply inclined working face of Zaoquan Coal Mine as the engineering background,the key points and difficulties of support falling and sliding prevention and scraper conveyor up-and-down moving automation control in steeply inclined working face were studied,and the technology control strategy data model and logical system of scraper conveyor up-and-down moving were established.On the basis of the judgment method of scraper conveyor up-and-down moving trend,the control scheme of scraper conveyor moving and supports pulling following the coal shearer was formed,and three kinds of supports pulling action control logic in steeply inclined working face were established,including conventional supports pulling method,supports adjustment method for preventing scraper conveyor from sliding down and supports adjustment method for preventing scraper conveyor from moving up.The actual engineering application showed that the average mining speed of the working face could reach 6.3 m/min,and the daily maximum production could reach 11700 t/d,which realized the high-definition visualization of the working face,and ensured the normal operation of the intelligent mining of the steeply inclined working face through management innovation.