摘要
针对综采放顶煤工作面后端的综放工作面采用人工放煤控制方式,与综采放顶煤工作面前端的综采工作面自动化水平差距较大的问题,研究了一种自动化放煤控制系统。根据放顶煤液压支架上安装的倾角传感器和前后部刮板输送机千斤顶中的行程传感器,控制液压支架放煤机构位姿,实现放煤量精准控制;通过在液压支架尾梁上安装云台摄像仪和红外发射器,对放煤全过程进行实时视频监视,实现后部刮板输送机运煤量和直线度的检测与控制;利用图像灰度识别技术进行煤矸识别,检测采出顶煤的含矸率。该系统提高了放煤效率和质量,为实现综采放顶煤工作面无人化提供了思路。
Aiming at problem that fully mechanized caving face at the back end of fully mechanized top coal caving face adopted manual caving control method,its automation level differed greatly from that at the front end of fully mechanized top coal caving face,an automatic coal caving control system was studied.According to inclination sensors installed on top coal caving hydraulic support and travel sensors in jacks of front or rear scraper conveyor,position and attitude of caving mechanism of the hydraulic support are controlled to achieve precise control of caving quantity;by installing pan-tilt camera and infrared transmitter on tail beam of the hydraulic support,real-time video monitoring is carried out in whole process of coal caving to realize detection and control of coal transportation quantity and straightness of the rear scraper conveyor;image gray recognition technology is used to identify coal-gangue and detect gangue content of top coal.The system improves efficiency and quality of coal caving,and provides an idea for realizing unmanned fully mechanized top coal caving face.
引文
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