任楼煤矿72煤顶板岩体特征研究 .pdfVIP

学兔兔 第22卷2期 中 国 煤 炭 地 质 V01．22 No．2 2010年2月 COAL GE0L0GY 0F CHINA Feb． 2Ol0 doi：10．3969~．issn．1674-1803．2010．02．09 文章编号：1674—1803(2010)02—0040—03 任楼煤矿72煤顶板岩体特征研究 张大伟 ，冯松宝 ，汪伟民。，王 慎 (1．皖北煤电集团公司任楼煤矿，安徽 淮北 235000；2．巾国矿业大学地球科学与测绘l丁：程学院，北京 100083； 3．皖北煤电集团公司卧龙湖煤矿．安徽 淮北 2350001 摘 要：针对任楼煤矿开采7 煤过程中，巷道在强大的动压作用下，破坏严重的情况，从岩性组成、岩层组合类型和 顶板岩体结构j三个方面，研究了煤层顶板岩体特征。研究结果表明，7 煤顶板岩体岩性以软岩为主，岩层组合以“直 接顶+老顶”的组合形式为主，岩体结构以碎裂和块裂结构为主。研究结果为巷道布置、支护形式选择、顶板管理提供 了科学依据。 关键词：顶板；岩体结构；分维值；72煤层；任楼煤矿 中图分类号：TD163 文献标识码：A Study on No．72 Coal Roof Rock Mass Characteristics in Renlou Coalmine Zhang Dawei’，Feng Songbao。，Wang Weimin and Wang Shen (1．Renlou Coahnine，Wanbei Coal—Electricity Group Co．Ltd．，Huaibei，Anhui 235000；2．School of Geoscience and Surveying Engineering，CUMTB，Beijing 100083；3．Wolonghu Coalmine，Wanbei C0al—E1ec city Group Co．Ltd．，Huaibei，Anhui 235000) Abstract：In allusion to serious destruction of roadway under the strong dynamic pressure during the mining of No．72 coal in the Renlou coalmine，coal roof rock mass characteristics have studied from three aspects of lithology，strata assemblage type and roof rock mass structure．The results have demonstrated that the lithology of No．72 coal roof is mainly soft rocks；strata assemblage is mainly” immediate roof+main roof’assemblage；while the rock mass structure is mainly cataclastic structure and blocky fractured structure． The findings can provide roadway layout，suppo~pattern selection and roof control with scientific basis． Keywords：roof；rock mass structure；fractal dimension；No．