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浅埋深“双硬”特厚煤层综放开采顶煤冒放性研究

发表时间:2013-09-30  浏览量:1077  下载量:453
全部作者: 吴吉南,徐金海
作者单位: 中国矿业大学矿业工程学院,煤炭资源与安全开采国家重点实验室;中煤平朔集团有限公司总工办
摘 要: 在分析矿区特点和地质条件的基础上,研究确定了综放工作面参数、设备配套与回采工艺,老顶的周期来压沿工作面方向并不是同时来压,而是呈现局部来压、迁移特征,周期来压的动载系数为1.31. 顶煤垮落块度分布实测结果表明:顶煤垮落块度不大,极大部分顶煤能够顺利放落,顶煤的冒放性较好。并对顶煤顶板的运移规律和采动支承压力分布规律进行实测分析,采用国产装备,在2006年工作面年产原煤988.74万t,采煤队月产原煤106.87万t,取得了巨大的经济效益,方案值得推广。
关 键 词: 采矿工程;浅埋深;双硬;特厚;矿压规律;综放开采
Title: Study on top coal cavability of fully mechanized sublevel caving for extra thick coalseam in the condition of shallow burial depth and hard coal and hard roof
Author: WU Jinan, XU Jinhai
Organization: State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology; Chief Engineer’s Office, Chinacoal Pingshuo Group Co., Ltd.
Abstract: Based on the mine area characteristics and geological conditions, parameters of fully mechanized caving face, equipment matching and recovery process are confirmed. Periodical weighting of base roof presents characteristic of local weighting and migration rather than simultaneous weighting in the working face direction and the dynamic load factor of periodical weighting is 1.31. According to measured results of top-coal collapse lumpiness distribution, most top-coal can successfully cave down and the caving property of top-coal is good. In addition, measurement analysis has been taken to the migration rule of top-coal and roof and the distribution law of mining abutment pressure. Depending on Chinese-made equipment, the working face produces 9.887 4 Mt raw coal in 2006 and coal mining team produces 1.068 7 Mt raw coal every month. As great economic benefit has been made, and this technology is worth popularization.
Key words: mining engineering; shallow burial depth; hard coal and hard roof; extra thick; mine pressure regularity; fully mechanized sublevel caving
发表期数: 2013年9月第18期
引用格式: 吴吉南,徐金海. 浅埋深“双硬”特厚煤层综放开采顶煤冒放性研究[J]. 中国科技论文在线精品论文,2013,6(18):1754-1760.
 
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