综采重复开采的覆岩破坏规律  

Overburden Failure Law of Fully Mechanized Repeated Mining

作　　者：康永华 黄福昌[2] 席京德[3] 

机构地区：[1]煤炭科学研究总院北京开采研究所,北京100013 [2]兖矿集团有限公司,山东邹城273500 [3]兖矿集团有限公司兴隆庄煤矿,山东兖州272102

出　　处：《煤炭科学技术》2001年第1期22-24,共3页Coal Science and Technology

基　　金：国家自然科学基金!重点资助项目 (596340 30 )

摘　　要：以现代化矿井兴隆庄煤矿的现场实测资料为基础 ,对综采重复开采的覆岩破坏高度、范围、形态及发育特点等进行了全面分析 ,并提出 :减小初次开采厚度以降低覆岩破坏高度 ;增大重复开采厚度以提高采煤工效和矿井经济效益 ;对厚煤层采用分层与放顶煤相结合的采煤方法 ,既可控制导水裂缝带的发育高度 ,又可降低生产成本。The paper summarized fully mechanized repeated mining, especially overburden failed depth, scope, status and development feature under the conditions of slicing mining and caving mining base on a comparable study on overburden failure law under fully mechanized coal caving and slicing mining method. An initial mining depth in the thick seam or a depth of a full seam cut will cause an obvious increasing in crack height and also in horseshoe distribution. A depth of the repeated mining depth increased generally will not have a obvious increasing in water conducted cracking zone. In comparison between a full mechanized coal caving mining and fully mechanized coal slicing mining, the water conducted crack height of the first mining method will be 85 % higher than the second mining method. To reduce an initial mining depth in thick seam slicing for reduction of the water conducted crack zone development and to improve coal mining efficiency and mine economic benefit with increasing a repeated mining depth is a new method recommended for the present coal mining operation under water body. A coal mining method with a combination of a slicing and caving, a double benefit in control of water conducted crack zone development and in reduction of coal production cost can be obtained.

关 键 词：综采开采 重复开采 覆岩破坏规律 分层开采 放顶煤开采 导水裂缝带 

分 类 号：TD325[矿业工程—矿井建设] TD823.97