论文部分内容阅读
一、地质环境及煤层的分布地质环境:本文所要阐述的区域,是以横断山脉以东,秦岭褶皱以南和华夏古陆之西。即扬子陆台的主要部分。包括四川地台东部、黔桂地台西部、昆明凹陷和康滇地盾一部分煤田(图1)。除四川盆地较平坦外,云贵地区多为高山深谷,这个地区的基底岩层仅在康滇地盾上有所出露,分布最广的是上古生代和中生代岩层。上古生代地层以厚层石灰岩、页岩、
First, the geological environment and the distribution of coal Geological environment: The area to be elaborated in this article is to the east of Hengduan Mountains, south of Qinling fold and west of Huaxia ancient land. That is, the main part of the Yangtze land platform. Including the eastern part of Sichuan platform, Guizhou and Guangxi platform west of Kunming depression and Kangdi Dian shield part of the coalfield (Figure 1). Except that the Sichuan Basin is relatively flat, most of the Yungui and Guiyang areas are alpine deep valleys. The basement strata of this area are only exposed on the Kang-Dian Earthquake Shield. The most widely distributed are the Upper Paleozoic and Mesozoic rock formations. The Paleozoic strata with thick limestone, shale,