Huayingshan Guangneng Group Corporation, Sichuan Provincial Coal Industry Group Corporation Ltd. School of
Resources and Environment Science, Chongqing University

为了解决破碎顶板条件下的薄煤层综采技术难题,四川华蓥山广能公司自主研制了MG2×150/421-PFD双滚筒采煤机、SGZ730/320-LT型中双链式刮板输送机、ZY3400/6.5/14型工作面液压支架和ZYZT3600/14/28型端头液压支架等综采设备,并在李子垭煤矿11041工作面进行了现场工艺性试验。试验结果表明,工作面"三机"设备配套合理,开采机械自动化程度大幅提高,成功实现了在破碎顶板条件下厚度小于1 m的薄煤层综合机械化开采,试验期间工作面安全推进654.8 m,累计产煤56 377 t,最大工作面月安全推进度219.6 m,最大工作面月产煤量25 349 t。

In order to solve the difficulties in a fully mechanized coal mining face in the thin seam under broken roof conditions, a MG2 x 150 /421- PFD double dru m coal shearer, SGZ730 /320- LT mode middle double chain type scraper conveyor, ZY3400 /6. 5 /14 mode hydraulic powered coal face support, ZYZT3600 /14 128 mo de hydraulic powered face end support and other fully mechanized coal mining equipment were self researched and developed by Sichuan Huayingshan Guangneng Gr oup Corporation and were applied to the site technology trial in No. 11041 coal mining face of Liziya Mine. The trial results showed that the match of"the three machine" equipments was rational, the automation degree of the machineries was highly improved and the fully mechanized coal mining in the thin seam with a thickness less tha n 1 m under the condition of broken roof was successfully realized. During the trial mining period, the coal mining face was safely advanced forward with a distance of 6 54.8 m and there were 56 377 t coal totally produced from the coal mining face. The max month advancing distance of the coal miming face was 219. 6 m and the max month coal production of the coal mining face was 25 349 t.