Comprehensive governance technology for fully-mechanized mining face across abandoned roadways in thick coal seam

中国安全科学学报 Pub Date : 2020-06-28 DOI:10.16265/J.CNKI.ISSN1003-3033.2020.06.011

Z. Yaohui, Li Xifan, Xiong Zu-qiang, W. Cheng

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Abstract

In order to address impacts of various types of abandoned roadways on normal mining of working face in thick coal seamꎬ field surveysꎬ theoretical analysis and other methods were used to summarize occurrence characteristics and hazards of abandoned roadways which were divided into complete types along bottomꎬ complete types along topꎬ and fallen onesꎬ and different treatment methods for them were proposed. Meanwhileꎬ in order to meet needs of various construction schemesꎬ sulfoaluminate ̄based multifunctional grouting materials were developedꎬ and comprehensive governance technology for fully ̄ mechanized mining face passing abandoned roadways in thick coal seam was proposed. Finallyꎬ with Sihe 中国安全科学学报 China Safety Science Journal 第30卷 2020年 coal mineꎬ Chengzhuang coal mine and Guozhuang coal mine taken as engineering backgroundsꎬ filling pillar supportꎬ high water filling and deep ̄hole grouting methods were applied respectively to treat abandoned roadwaysꎬ and their governance effectiveness was investigated. The results show that after specific treatment of empty roadwaysꎬ there will be no sloughing and roof accidentsꎬ and roof pressure becomes normalꎬ thus ensuring safe mining of working faces.

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厚煤层跨空巷道综采工作面综合治理技术

为了解决不同类型的废弃巷道对厚煤层工作面正常开采的影响ꎬ现场调查ꎬ采用理论分析等方法，总结了废弃巷道的赋存特征及危害，将其分为沿底完整型ꎬ沿顶完整型ꎬ和陷落型ꎬ，并提出了不同的处理方法。同时ꎬ为满足各种施工方案的需要ꎬ研制了硫铝酸盐基多功能注浆材料ꎬ，提出了厚煤层综采工作面过空巷道综合治理技术。最后ꎬ以泗河煤矿ꎬ城庄煤矿和国庄煤矿为工程背景ꎬ分别采用充填柱支护ꎬ高水充填法和深孔注浆法对废弃巷道进行治理ꎬ并对其治理效果进行了研究。结果表明:对空巷进行具体处理ꎬ后，不会发生塌落和顶板事故ꎬ，顶板压力恢复正常ꎬ，保证了工作面的安全开采。

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来源期刊

中国安全科学学报

CiteScore

1.30

自引率

0.00%

发文量

8733

期刊介绍： China Safety Science Journal is administered by China Association for Science and Technology and sponsored by China Occupational Safety and Health Association (formerly China Society of Science and Technology for Labor Protection). It was first published on January 20, 1991 and was approved for public distribution at home and abroad. China Safety Science Journal (CN 11-2865/X ISSN 1003-3033 CODEN ZAKXAM) is a monthly magazine, 12 issues a year, large 16 folo, the domestic price of each book is 40.00 yuan, the annual price is 480.00 yuan. Mailing code 82-454. Honors: Scopus database includes journals in the field of safety science of high-quality scientific journals classification catalog T1 level National Chinese core journals China Science and technology core journals CSCD journals The United States "Chemical Abstracts" search included the United States "Cambridge Scientific Abstracts: Materials Information" search included