摘要
通过对特厚坚硬煤层综放开采技术的系统分析，指出提高坚硬顶煤的冒放性和瓦斯的综合治理是该条件下综放开采所面临的主要技术难题。在对特厚坚硬顶煤结构及破碎特点分析的基础上，提出了提高坚硬顶煤冒放性的主要技术途径和措施，在宁夏太西集团白芨沟矿煤层特厚、坚硬、顶板坚硬、高瓦斯和浅埋深条件下，成功地进行了分层综放开采的实践，达到了工作面年产 １５０Ｘ １０４ｔ的生产水平。在该条件下实现了综放开采技术的突破，取得了预期的效果。
After analyzing fully-mechanized sub-level caving technology in the case of special thick and hard coal seam, it is presented that the increment of cavability of hard roof coal and available control of gas are the main difficult technology problem to be faced. The structure and breaking characteristic of hard roof coal are analysed. and the main technology approach and measurements to increase cavability of hard roof coal are proposed. The technology has been successfully applied in Baijigou colliery. Ningxia. where the coal seam is thicker than 20 m, with hard coal, hard roof, intensive gas and shallow oveburden. The annual output of coal there is 1.5 million tons. The proposed technigue is a breakthrough to sub-level caving mining technique, and anticipative effect has been obtained.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第2期273-279,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
特厚坚硬煤层
分层综放开采
冒放性
支架
选型
special thick and hard coal seam, fully-mechanized sub-level caving mining, key technology, cavability, selection of support types
