河北省褐煤资源赋存分布特征与勘查开发利用前景分析

河北省辖区内赋存、分布的褐煤资源形成于早白垩世和第三纪，但由于煤层顶底板岩石固结程度差，建井开采时井巷变形严重，维护困难，致使大量褐煤资源未得以开发利用。根据已有资料分析，褐煤含煤区地质构造条件简单、水文地质条件简单、主要呵采煤层顶板以泥岩或炭质泥岩为主，岩石致密，透气性差。褐煤本身透气性好，燃点低，没有粘结性，挥发分高．受热容易膨胀破裂，诸多因素都表明适合采用煤炭地下气化的开采方式进行开发利用，因此有必要加强我省褐煤资源的地质勘查工作和煤炭地下气化工艺的研究，为今后褐煤开发利用奠定基础。

Analysis of Lignite Resources Hosting, Distribution Features and Exploration, Exploitation, Utilization Prospect in Hebei Province

Lignite resources hosted and distributed in the Hebei Province are formed in Early Cretaceous and Tertiary, but because of coal seam roof and floor rocks are poorly consolidated, roadways were seriously distorted and hardly to maintenance during construction and mining, brought about a mass of lignite resources have not exploited and used yet. According to available data, lignite-bearing area has simple geological structure and hydrogeological condition, main mineable coal seam roofs are mainly compact and poor air permeability mudstone or carbargillite. While lignite itself has good air permeability, low ignition point, no caking property, high volatile matter content, easy to swell and break up when it is heated, a good many factors indicated the lignite can exploit and use through underground gasification, thus lignite resources geological exploration and underground gasification technological research should be enhanced to lay a foundation for lignite exploitation and utilization for the future.