中国煤科所属期刊2篇论文入选“第六届优秀科技论文遴选计划入选论文”

　　11月8日，中国科学技术协会公布第六届优秀科技论文遴选计划入选论文名单，共有95篇论文入选。其中，中国煤炭科工集团所属期刊《煤炭学报》、International journal of Coal Science and Technology各有1篇论文入选。

　　为贯彻落实习近平总书记关于办好一流学术期刊的重要指示，鼓励科技工作者将更多高水平研究成果在国内期刊发表，从源头推动我国科技期刊高质量发展，中国科协组织开展了第六届优秀科技论文遴选计划。经过各学科领域专家推荐、初评遴选、终评审定并向社会公示，最终确定95篇入选论文。

　　本届入选的95篇论文是2017年1月1日以来，发表在我国科技期刊上的优秀论文的代表。这些论文有的在基础研究前沿领域作出重要原始创新，对丰富和发展学科体系作出了积极贡献;有的在应用研究领域取得重要突破，解决重大工程技术难题，极大促进了技术创新和产业发展。发表上述优秀论文的期刊及编辑人员，为论文的编辑出版做了大量基础性工作，为吸引和凝聚高水平成果在我国科技期刊上发表作出了积极贡献。

（1）《煤炭学报》入选论文：

题目：煤柱留巷定向水力压裂卸压机理及试验

作者：吴拥政，康红普

摘要：针对煤柱留巷支护问题,提出一种控制坚硬厚顶板煤柱留巷变形的新方法——定向水力压裂留巷卸压技术，旨在转移护巷煤柱上的高采动应力，改善留巷的应力状态，并提出定向水力压裂煤柱留巷卸压机理。以余吾煤业公司S1206煤柱留巷瓦排巷为研究对象，确定了定向水力压裂钻孔方案、钻孔布置参数及施工工艺。压裂结果显示，横向切槽机械钻头可以在预定位置预制开槽；1~28 m分段压裂时间占总压裂时间48%，是整个钻孔的压裂关键位置;采用间接方法判断裂隙的扩展范围20 m左右。对压裂段和非压裂段进行了表面位移、煤柱垂直应力、工作面超前支承压力、压裂段煤柱上方三向应力等监测。监测结果表明：压裂段两帮收缩量降低30.5%，顶底板移近量降低50.2%；超前压力的影响距离不超过50 m，距离工作面超过15 m左右时，出现应力峰值；超前工作面10 m左右范围内出现塑性破坏；采动影响最显著的作用来自垂直应力；采空区造成应力扰动方向与最大相对主应力方向一致。监测与评估表明卸压效果明显。压裂及卸压结果表明，采用定向水力压裂留巷卸压技术可以消除或减弱坚硬顶板形成的悬顶效应,达到留巷的目的。

引用格式：

吴拥政，康红普.煤柱留巷定向水力压裂卸压机理及试验[J].煤炭学报,2017,42(5):1130-1137.

Wu Yongzheng，Kang Hongpu.Pressure relief mechanism and experiment of directional hydraulic fracturing in reused coal pillar roadway[J].Journal of China Coal Society,2017,42(5):1130-1137.doi:10.13225/j.cnki.jccs.2016.1677

（2）International journal of Coal Science and Technology入选论文：

Title：Theoretical description of drawing body shape in an inclined seam with longwall top coal caving mining

Author：Jiachen Wang, Weijie Wei, Jinwang Zhang

Abstract：Understanding the characteristics of drawing body shape is essential for optimization of drawing parameters in longwall top coal caving mining. In this study, both physical experiments and theoretical analysis are employed to investigate these characteristics and derive a theoretical equation for the drawing body shape along the working face in an inclined seam. By analyzing the initial positions of drawn marked particles, the characteristics of the drawing body shape for different seam dip angles are obtained. It is shown that the drawing body of the top coal exhibits a shape-difference and volume-symmetry characteristic, on taking a vertical line through the center of support opening as the axis of symmetry, the shapes of the drawing body on the two sides of this axis are clearly different, but their volumes are equal. By establishing theoretical models of the drawing body in the initial drawing stage and the normal drawing stage, a theoretical equation for the drawing body in an inclined seam is proposed, which can accurately describe the characteristics of the drawing body shape. The shape characteristics and volume symmetry of the drawing body are further analyzed by comparing the results of theoretical calculations and numerical simulations. It is shown that one side of the drawing body is divided into two parts by an inflection point, with the lower part being a variation development area. This variation development area increases gradually with increasing seam dip angle, resulting in an asymmetry of the drawing body shape. However, the volume symmetry coefficient fluctuates around 1 for all values of the seam dip angle variation, and the volumes of the drawing body on the two sides are more or less equal as the variation development volume is more or less equal to the cut volume. Both theoretical calculations and numerical simulations confirm that the drawing body of the top coal exhibits the shape-difference and volume-symmetry characteristic.

Cite this article：

Wang, J., Wei, W. & Zhang, J. Theoretical description of drawing body shape in an inclined seam with longwall top coal caving mining. Int J Coal Sci Technol 7, 182–195 (2020). https://doi.org/10.1007/s40789-019-00286-z

拓展阅读：

中国科协关于公布第六届优秀科技论文遴选计划入选论文的通知

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