维普中文期刊产品整合服务

Time-domain characteristics of overlying strata failure under condition of longwall ascending mining

查看全文 作　　者：Liang [1,2]Shun;Li [1,2]Xuehua;Mao [1,2]Yanxin;Li [1,3]Chengjun 高影响力作者 机构地区：[1]School of Mines, China University of Mining & Technology;[2]State Key Laboratory of Coal Resource and Mine Safety, China University of Mining & Technology;[3]Coal and Electricity of Anhui Hengyuan Co. Ltd.高影响力机构 出　　处：《International Journal of Mining Science and Technology》索引2013年第23卷第2期,共5页高影响力期刊 基　　金：provided by the National Natural Science Foundation of China (No. 50974118);the New Century Talents Supporting Program from Ministry of Education (No.NCET-09-0727);the Program for Postgraduates Research Innovation in Universities of Jiangsu Province of China (No.CXZZ12_0951) 摘　　要：Ascending mining is one of the most effective ways to solve problems of water inrush, gas outburst and rock burst in coal seams mining. In order to reveal the law of motion and spatiotemporal relationship of overlaying strata, field measurement has been done in a mine. Long distance drillings were constructed from 4# coal seam to 6# coal seam at several certain typical positions, and movement and failure law of overlying strata after mining was analyzed by drilling video and observing the fluid leakage. Besides, we also analyzed the spatiotemporal development law of overlying strata failure with different mining heights and time intervals in the lower coal seam. The results show that: ascending mining is significantly affected by time-domain characteristics of overlaying strata failure after the lower coal seam's mining, height equations of caving zone and fractured zone are given in this paper, and the feasibility of ascending mining was compartmentalized concretely according to the spatiotemporal relationship. Research methods and conclusions of this paper have certain referential significance for the study of ascending mining, mining under water, mining under building, mining under railway and stress-relief mining. 关 键 词：Ascending mining Overlying strata failure Time-domain characteristics Strata control
相关文献

参考文献(12)

引证文献(5)

耦合文献(1427)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费