Failure mechanism and control technology of longwall coalface in large-cutting-height mining method

Wang Jiachen; Yang Shengli; Kong Dezhong

首页> 外文期刊>矿业科学技术学报：英文版 >Failure mechanism and control technology of longwall coalface in large-cutting-height mining method

【24h】

Failure mechanism and control technology of longwall coalface in large-cutting-height mining method

机译：大采高法长壁煤层破坏机理及控制技术

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

The stability control of longwall coalface is the key technology of large-cutting-height mining method.Therefore,a systematic study of the factors that affect coalface stability and its control technology is required in the development of large-cutting-height mining method in China. After the practical field observation and years of study,it was found that the more than 95% of failures in coalface are shear failure. The shear failure analysis model of coalface has been established,that can perform systematic study among factors such as mining height,coal mass strength,roof load,support resistance,and face flipper protecting plate horizontal force. Meanwhile,sensitivity analysis of factors influencing coalface stability showed that improving support capacity,cohesion of coal mass and decreasing roof load of coalface are the key to improve coalface stability. Numerical simulation of the factors affecting coalface stability has been performed using UDEC software and the results are consistent with the theoretical analysis. The coalface reinforcement technology of large-cutting-height mining method using the grouting combined with coir rope is presented. Laboratory tests have been carried out to verify its reinforcement effect and practical application has been implemented in several coal mines with good results.It has now become the main technology to reduce longwall coalface failure of large-cutting-height mining method.

著录项

来源
《矿业科学技术学报：英文版》 |2016年第001期|P.111-118|共8页
作者
Wang Jiachen; Yang Shengli; Kong Dezhong;
展开▼
作者单位

[1]College of Resources ＆ Safety Engineering, China University of Mining ＆ Technology, Beijing 100083, China;

[2]State Key Laboratory of Coal Resources ＆ Safe Mining, Beijing 100083, China;

[3]China Coal Industry Top-Coal Caving Mining Engineering Research Center, Beijing 100083, China;

展开▼
收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 CHI
中图分类 TD823.41;
关键词
长壁工作面; 控制技术; 开采方法; 失效机理; 大采高; 顶板稳定性; 采煤工作面; 煤体强度;

机译：长壁工作面;控制技术;开采方法;失效机理;大采高;顶板稳定性;采煤工作面;煤体强度;

Failure mechanism and control technology of longwall coalface in large-cutting-height mining method

摘要

著录项

相关主题

期刊订阅