|
| 综放工作面端头“双节式”放煤液压支架及技术 |
| Research on double-section-type hydraulic end-support and technology of top-coal caving at the ends of fully-mechanized working face |
| |
| DOI： |
| 中文关键词: 放煤支架;双节式;低位耙煤系统;高位放煤系统 |
| 英文关键词: top-coal-caving support; double-section-type; low coal-raking system; high coal-caving system |
| 基金项目:华北科技学院科研基金资助项目(A09002);高校基础研究基金资助项目(E1204) |
| 作者 | 单位 | | 刘玉德 | 华北科技学院 矿井灾害防治实验中心,北京101601
华北科技学院 安全工程学院,北京101601 |
|
| 摘要点击次数: 2474 |
| 全文下载次数: 1783 |
| 中文摘要: |
| 依据综采工作面端部“支架-围岩”关系,研发了新型的“高放低耙双节式”端部放煤液压支架,核心内容包括“对称转轮倾斜刮板式”低位耙煤系统和“对开不对称式槽形”高位放煤系统,解决了2个关键性的问题,一是在普通支架后方增加的副架有足够空间来放置后部输送机,二是通过耙煤系统把底板落煤运至输送机机头、机尾较高的运输槽中,同时,研究分析了端部顶煤冒放性特征及端部放煤可行性.项目的实施,将显著提高综放面煤炭回收率,产生良好的经济、社会效益,具有十分重要的意义和广阔的推广应用前景. |
| 英文摘要: |
| Based on the relations between supports and surrounding rock at the ends of top-coal caving fully-mechanized working face, this paper analyzes and designs the double-section-type top-coal caving hydraulic end-support with high-caving and. The core content of new end-support includes the low coal-raking system, which has the tilt scraper and the symmetric pair wheels and the high coal-caving system which has the unsymmetrical pair-open troughs. It has solved two key problems in the design process of end-support; one is that the end-support has enough space to place the rear conveyor of working face, the other is that the loose drop-coal on the floor can be carried into the high troughs of conveyor head and tail. This paper also analyzes the caving character of top-coal at the ends of working face and the feasibility of top-coal caving at the ends. Through the implementation of the project, it will improve the coal recovery significantly, produce good economic and social benefits, and have very important significance and wide application prospect through solving the difficult problem of top-coal caving at the ends of fully-mechanized working face. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
