密县矿区二_1煤层赋存规律及开采技术条件研究

查明煤层赋存情况及开采技术条件是煤矿建设和生产的首要问题,随着煤矿生产机械化程度的提高,开采强度增大,此问题日趋突出、倍感重要,越来越被广大煤矿工程技术人员所重视,本文从原始沉积古地理位置、地质构造、煤厚变化、变质程度以及埋藏条件等方面论述了密县矿区二_1煤层的赋存规律,从煤层厚度、结构、原煤灰分、顶底板岩性、水文地质条件、矿井瓦斯诸方面分析论证了该区二_1煤层的开采技术条件。

THE COAL GEOLOGICAL CHARACTERISTICS AND ITS MINING CONDITIONS FOR THE SEAM Ⅱ OF THE LOWER SHANXI FORMATION IN THE MIXIAN COALFIELD,HENAN

This paper deals with the coal geological features of a mainly mining coal bed usually called as the Seam Ⅱ,of the Lower Shanxi Formation of the late Paleozoic coal measures in the Mixian area of western Henan,including its thickness changed,textures,ash and coalgas contents,taphonomic and hydrogeologic conditions,sedimendary environments and tectonic setting as well as physical properties of its overlying and underlying rocks and so on;on the basis of these characteristics,then analyses and discusses several different technical conditions mining the seam in this area.