8 m大采高综采工作面智能控制系统关键技术研究  

Study on key technology of intelligent control system applied in 8 m large mining height fully-mechanized face

作　　者：任怀伟[1] 孟祥军[2] 李政[2] 李明忠[1] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]兖矿集团有限公司,山东济宁273500

出　　处：《煤炭科学技术》2017年第11期37-44,共8页Coal Science and Technology

基　　金：国家重点基础研究发展计划(973计划)资助项目(2014CB046302);国家自然科学基金资助项目(U1610251)

摘　　要：针对8 m大采高工作面围岩稳定性下降、装备功率和尺寸大幅增加,将对控制的实时性、准确性和适应性提出更高要求的现状,开展超大采高工作面智能化控制技术研究。基于布置在液压支架上的压力及倾角传感器,构建液压支架支护状态在线监测系统;在采煤机记忆截割和高精度位置控制的基础上,依据修正后的采割曲线实现自动割煤;提出刮板输送机多电动机功率协同的智能驱动策略;采用三进三回环形供液及高压自动补偿技术,实现动力系统最小压力波动、最大瞬间供液的智能控制。上述技术在兖矿集团有限公司金鸡滩煤矿进行应用,结果表明:煤壁片帮、支架初撑力不足、刮板输送机压死等问题明显减少,三级护帮动作时间减少1/2,大幅提升了设备的运行质量和效率,可有效满足超大采高工作面的控制需求。According to the surrounding rock stability decreased,the equipment power and dimension highly increased in the 8 m high cutting coal mining face,based on the real-time,accuracy and adaptation of the control,a more higher requirements were provided and a study was conducted on the intelligent control technology of the ultra high cutting coal mining face. Based on the pressure and inclination sensors set on the hydraulic powered support,a support status online monitoring system of the hydraulic powered support was established.Based on the memory cutting and high accurate location control of the coal shearer,an automatic coal cutting was realized with the modified mining and cutting curve. An intelligent driving strategy with the multi motor power coordination of the scraper conveyor was provided,A three supply and three returned loop hydraulic supply and the high pressure automatic compensation technology was applied to realize the intelligent control of the min pressure fluctuation of the power system and the max transient hydraulic supply. Those above technologies were applied to Jinjitan Mine of Yankuang Group Company Limited. The results showed that the coal wall spalling,insufficient setting force of the hydraulic powered support,the scraper conveyor jammed and other problems were obviously reduced,three-stage sidewall protection time was reduced by 1/2,the operation quality and efficiency of the equipment were efficiently improved and the control requirements of the ultra high cutting coal mining face could be efficiently met.

关 键 词：8 m大采高 支架状态在线监测 多电动机协同驱动 压力自动补偿 

分 类 号：TD67[矿业工程—矿山机电]