大采高工作面智能化综采关键技术研究

Research on key technologies of intelligent fully mechanized mining on working face with large mining height

为了解决大采高综采工作面用人多、劳动强度大等问题,针对陕西陕煤黄陵矿业有限公司二号煤矿实际情况,分析了大采高工作面智能化综采存在的片帮精准控制难、底软拉架难及装备可靠性、感知精准度、协同性差等技术难题;选用可视化远程干预型技术路线来实现大采高综采工作面智能常态化开采;重点研究了高效采煤工艺、防片帮控制技术、底软智能控制技术和顶板破碎智能控制技术。通过采煤工艺革新,三角煤截割效率提高了30%;在煤壁发生片帮的不同阶段采用不同的控制手段,实现了护帮板精准控制;通过液压支架多次降架模拟人工操作的方式完成底板软弱条件下的智能化处理,解决了架前堆煤问题;通过液压支架超前拉架的方式完成工作面顶板破碎条件下的智能化处理,确保顶板破碎区域可以智能开采。二号煤矿实践表明,采用智能化综采技术后,实现了以工作面设备智能运行为主、现场干预控制为辅的智能化生产模式,以及井下7人作业、地面2人监控的"7+2"作业模式,达到了减员提效的目的。

In order to solve problems of large number of workers and high labor intensity on fully mechanized mining face with large mining height,according to actual situation of No.2 Coal Mine of Huangling Mining Group Co.,Ltd.,technical difficulties such as precise control of rib spalling,soft bottom frame and equipment reliability,precision of perception and poor coordination in intelligent fully mechanized mining on working face with large mining height were analyzed.Technology route of visual remote intervention were used to realize intelligent normal mining of fully mechanized mining face with large mining height.Efficient coal mining technology,control technology of anti-rib spalling,intelligent control technology with soft bottom and broken roof were research focus.Mining efficiency of triangular coal is increased by 30%through mining process innovation;different control methods are used in different stages of rib spalling to control,and precise control of guard plate is achieved;intelligent processing under weak condition of soft bottom is completed through simulation of manual operation of descending of hydraulic support for several times,and the problem of coal piling in front of the support is solved;intelligent treatment under the condition of broken roof is completed by pulling support advanced to ensure that the roof broken area can be mined intelligently.The practice of No.2 Coal Mine shows that after adopting intelligent fully mechanized mining technology,intelligent production mode is realized which mainly based on intelligent operation of working face equipments and with the help of remote intervention control of monitoring center,as well as the“7+2”operation mode of 7 people underground and 2 people on the ground,so achieves the purpose of reducing staff and improving efficiency.