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深井矿山开拓长距离平巷贯通控制测量 被引量:4
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作者 王团结 张启春 谢永东 《西部探矿工程》 CAS 2013年第2期119-124,共6页
阐述了深井矿山开拓长距离平巷贯通控制测量的具体做法、技术和安全措施等,这种贯通多头长距离平巷的精度可靠,大大缩短了深井矿山建设的工期,为矿山建设早投产、早收效提供了有力的保证。
关键词 深井矿山 联合联系测量 陀螺经纬仪 不等权观测
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Relationship between joint development in rock and coal seams in the southeastern margin of the Ordos basin 被引量:1
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作者 Wang Linlin Jiang Bo +3 位作者 Wang Jilin Qu Zhenghui Li Pei Liu Jiegang 《International Journal of Mining Science and Technology》 SCIE EI 2014年第2期219-227,共9页
To predict joint development characteristics of coal seams, joint characteristics of rock seams from 88field stations were observed and comparisons were made between joint characteristics of coal and rock seams at 10 ... To predict joint development characteristics of coal seams, joint characteristics of rock seams from 88field stations were observed and comparisons were made between joint characteristics of coal and rock seams at 10 coal outcrops. Additionally, detailed joint measurements of underground coal seams were taken at two coal mines. This study investigated the effects of seam thickness, lithology, and structure on joint development and established the relationship between joint development of coal and rock seams, which allowed predictions of predominant joint densities for the No.5 coal seam in the southeastern margin of the Ordos basin. The results show that outcrop and underground coal seams exhibit the same joint systems as rock seams. The joints are mainly upright. Predominant joints strike 55° on average, followed by joints striking 320°. The joint density of the coal seam is 18.7–22.5 times that of the sandstone seam at the same thickness. The predominant joint density of the No.5 coal seam, controlled by the structure, is 4–20 joints per meter. Joint densities exhibit high values at intersecting areas of faults and folds and decrease values in structurally stable areas. The permeability increases exponentially with increasing density of the predominant joints. 展开更多
关键词 Southeastern margin Ordos basin Rock seam Coal seam Joint development
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