您要查找的是不是:
- The coal seam of fully mechanized top-coal caving face 1151(3) in Xieqiao coal mine of Huainan mining area is soft and loose,and is of low permeability and poor wetting condition. 基于淮南矿区谢桥煤矿1151(3)综放面,煤层松软、渗透性低、湿润性差的特殊条件,采用煤层注水工艺技术降尘,在注水孔布置方式及参数、注水孔封孔工艺、注水工艺等方面采取一定的技术措施。
- Study of gas drainage for the fully mechanized sub-level caving face with light-duty supports in the coal seam of low air permeability and high risk of gas outb 低透气性高突煤层轻放工作面瓦斯抽放研究
- Deep-hole presplitting explosion in coal seams with high gas content and low permeability was numerically simulated and analyzed. 摘要针对高瓦斯低透气性煤层,对深孔预裂爆破进行了数值模拟分析研究。
- low permeability outburst coal seam 低透气性突出煤层
- thick coal seam with low permeability 弱透气性厚煤层
- high gassy and low permeability coal seam 高瓦斯低透气性煤层
- coal seam with high gas content and low permeability 高瓦斯低透气性煤层
- RESEARCH ON CBM DEVELOPMENT OPTIONS FROM LOW PERMEABILITY COAL SEAMS 低渗透性储层煤层气地面开发方案的探讨
- The extinct trees of the genus Lepidodendron were once distributed widely and contributed largely to the coal seams of the Carboniferous. 已灭绝的鳞木属植物曾经分布广泛,它是石炭纪煤层的重要组成部分。
- The main coal seam of Taiping colliery is 11~# coal seam with a thickness of 1.5 m. 太平煤矿主采11%23煤层;煤厚1.;5 m
- According to the working practice in Southern 3 Malan mine ,analyzes the selecting method of digging position which is in the lower seam of short distance coal seams. 结合马兰矿南三采区施工实践经验,分析了近距离煤层下层煤巷道开掘位置的选择方法。
- Part roof fall accident cause is analyzed in flase top mining in No.5 Coal Seam of Pinggang Coal Mine.The prevention and cure measures are pointed out. 通过对平岗煤矿5%23煤在托伪顶回采时发生的局部冒顶事故原因的分析,提出了解决该问题的防治措施。
- The percolation mechanism of low permeability reservoirs differs a lot from that of conventional gas reservoirs. 由于低渗气藏一般具有低孔低渗的特点,所以其渗流机理与普通气藏相差很大。
- Well logging evaluation emphasizes differently according to different types of low permeability reservoirs. 摘要不同类型的低渗透气藏测井评价的重点不尽相同。
- LIU Wengang, JIANG Yaodong, ZH0U Hongwei, et al.Experimental study on outburst proneness coal seam of meso character and crack destabilization[J]. 刘文岗;姜耀东;周宏伟;等.;冲击倾向性煤体的细观特征与裂纹失稳的试验研究[J]
- This paper cleals with the organo-facies in the first coal seam of basin, which is variable both in thickness and in quality. 用有机岩石学方法及热解分析法详细研究了这些煤相。
- The reservoirs in the southern Dagang oil field are of low permeability with a large number of micro pores. 大港油田南区低渗透油藏两相共渗区窄 ,注水开发短期内含水上升迅速。
- This seam of coal reposes on a layer of clay. 这个煤层处于一层黏土岩之上。
- Water blockage is a ubiquitous problem during the development of low permeability gas reservoirs. 水锁效应是低渗透砂岩气藏开发中普遍存在的问题。
- The main target coal seam of Xieqiao Mine is directly covered with the Quaternary bottom gravels, whose impermeability affects the reasonable retainment of waterproof pillar. 第四纪底砾层直接覆盖在谢桥煤矿煤系地层之上,其隔水性能影响到防水煤柱的合理留设。