Test and application of hydraulic expansion bolts in a roadway under goaf with ultra-close separatio

来源 :矿业科学技术学报：英文版 | 被引量 : 0次 | 上传用户：lsxfa

【摘要】

：

The roof of a roadway under goaf with ultra-close separation consists of thin rock strata and rocks caving in upper goaf. Influenced by the mining of the upper

【作者】

：

Wang Xiangyu Bai Jianbiao Guo

【机构】

：

SchoolofMines,StateKeyLaboratoryofCoalResourcesandMineSafety

【出处】

：

矿业科学技术学报：英文版

【发表日期】

：

2014年6期

【关键词】

：

膨胀螺栓巷道顶板拉拔试验超近距离液压分离采空区应用 Hydraulic expansion bolt Coal seams with ultra-

【基金项目】

：

The research has received supports from the National Natural Science Foundation of China （Nos. 51204166 and 51174195） and the Advantage Disciplines Construction Fund Program of Jiangsu Universities （N

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The roof of a roadway under goaf with ultra-close separation consists of thin rock strata and rocks caving in upper goaf. Influenced by the mining of the upper coal seam, the roof is loose and broken, and its integrity is poor. Resin anchored bolts cannot

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Test and application of hydraulic expansion bolts in a roadway under goaf with ultra-close separatio

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