《煤炭资源勘查煤质评价规范》主要条文解释     

张谷春 《中国煤炭地质》2011,(11):24-26

依据《煤炭资源勘查煤质评价规范》MT/T1090-2008,结合规范编写过程中的体会和多年的煤质工作经验,从煤炭资源勘查煤质工作基本要求、煤样采取、煤样的包装送检和保存、煤样的测试、煤质评价和煤质报告等6个方面对该规范进行了解释和补充说明。重点解读了煤质测试项目要求、煤质测试单位资质、如何进行煤质评价和煤质报告的主要内容,补充了几种特殊试验煤心煤样的采取、主要的煤质测试项目标准等。  相似文献   

Investigation of Instability and Blasting Caving Technology of Composite Support Structure in the Goaf of Gypsum Mine     

Shun  Pang  Xu  Xiaoding  Zhou  Yuejin  Zang  Guchun  Wang  Jun 《Geotechnical and Geological Engineering》2021,39(6):4377-4391

According to the structure form of room and pillar goaf in gypsum mine, the mechanical model of pillar roof composite supporting structure was established in this research. Based on the cusp catastrophe theory and energy dissipation theory, the energy dissipation relationship of the support structure was analyzed, and a new instability criterion of the support system was derived by introducing the control parameters α and β. On this basis, the study of blasting caving was carried out. The influence of row spacing and hole depth on blasting caving was analyzed using ANSYS/LS DYNA software. The blasting influence range, stress wave attenuation and vibration velocity attenuation indices are obtained, and the blasting parameters such as the optimal distance and depth of blast holes between pillars and roof were optimized. Based on the results of theoretical analysis and numerical, combined with the engineering geological conditions of Dahan gypsum mine, the practical study of blasting caving was carried out. The caving scheme and caving sequence was determined, then the blasting caving effect was analyzed. The caving effect was found to be good, and the applicability of the theoretical model is verified.

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徐州地区二叠纪孢粉组合特征     

徐晓琴 高峰周国庆  张谷春 《中国煤田地质》2004,16(2):7-9,70

徐州地区二叠纪地层连续，孢粉化石保存较好，依据孢粉组合特征将其划分为四个组合带，即A、B、C、D组合带，虽然其中的孢粉属种相对单凋，但可与华北大部分地区及邻区对比；此次研究的重要意义在于它是首次利用微体古生物方法划定研究区上石盒子组与石千峰组的界限.  相似文献   

我国关闭/废弃矿井资源综合利用形势分析与对策研究     

任辉  吴国强  张谷春  宁树正  朱士飞  王行军  贺小龙  梁叶萍 《中国煤炭地质》2019,(2):1-6,81

长期的矿产资源开采形成了数量众多的关闭/废弃矿井(山),包括煤矿、金属和非金属矿等。矿井关闭废弃后仍赋存着方方面面的可利用资源,除了伴生的各种矿产资源外,还拥有巨大的地下空间资源(采空区和巷道),特别是部分井下仍然有多种废弃物(设备、材料等)和空间设施可再利用。通过总结一些关闭/废弃矿井资源综合利用状况,研究其功能定位和综合利用战略,并提出将关闭/废弃矿井资源综合开发利用与国家和区域经济、社会发展统筹部署的思考与建议。  相似文献   

致密砂岩储层束缚水饱和度影响因素:以鄂尔多斯盆地临兴地区为例#br#     

吴蒙  秦勇  申建  宋党育  王晓青  张谷春  李国璋  朱士飞 《吉林大学学报(地球科学版)》2022,52(1):68-79

为了有效指导储层描述、评价及产能预测,为致密砂岩油气勘探和开发提供理论依据,以鄂尔多斯盆地临兴地区致密砂岩储层为例,利用铸体薄片、X射线衍射、核磁共振、高压压汞、气水相渗及扫描电镜等实验,分析了致密砂岩中束缚水饱和度的影响因素.结果表明:研究区致密砂岩束缚水饱和度为３４．７７％~８３．７８％,平均值为６３．８６％,T２谱截止值(T２cutoff)为３．８６~６５．６０ms,平均值为２０．９６ms;致密砂岩束缚水饱和度受储层物性、润湿性、敏感性、黏土矿物类型、质量分数和粒径共同作用;致密砂岩粒径越细,黏土矿物质量分数越高,岩石亲水性越强,岩石比表面积和水膜厚度越大,则毛细管束缚水和薄膜束缚水越高;水敏和盐敏是造成致密储层渗透率改变的主要因素;致密砂岩发育残余粒间孔、粒间溶蚀孔、粒内溶蚀孔、晶间孔和微裂缝;充填于孔隙中黏土矿物的类型、形态存在差异,致使致密砂岩储层的孔隙结构复杂,微观非均质性强,束缚水饱和度变化大.  相似文献   

Study of the Mechanism for Identifying the Shale Gas‘Sweet Spot’Using the Reversed δ13C1-3 Series     

ZHAO Heng  LUO Houyong  ZHANG Guchun  WANG Yanjun  WANG Xiaofeng  QIN Yunhu  ZHANG Dongdong  LIU Wenhui 《《地质学报》英文版》2021,95(2):710-712

正Objective Reversed isotope series of alkanes(δ~(13)C and δ~2H) are widely reported in many prolific shale plays across the world, with many researchers having proposed that isotope reversal of alkanes can be used to identify the ‘sweet spot' of shale gas(Tilley et al., 2011). Although heightened research emphasis has been focused on the mechanism responsible for isotope reversal, it remains controversial. Tilley et al.  相似文献