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随着我国煤炭工业的飞速发展,大部分暴露式煤田已勘探和开发,这就必然要加强寻找隐蔽式煤田,作为煤炭工业发展的后备基地。我们曾预测出一个隐蔽式煤田,后经勘探证实。兹将本煤田地质概况,预测找煤的步骤及体会介绍如下: 一、地质概况本煤田分布于本省一个地堑内,呈北东—南西向延伸,全长30公里,宽3公里,面积约90平方公里。属老第三系褐煤煤田(图1)。 1.地层本区地层由前震旦系变质岩、混合岩、白垩系赤色地层、第三系含煤地层等组成(图2)除前震旦系在煤田两侧有出露外,其它地层全被第四系覆盖。依据钻探的揭露,按顺序从老至新概述如下:
With the rapid development of China’s coal industry, most of the exposed coal fields have been explored and developed, which inevitably needs to strengthen the search for hidden coal fields as a backup base for the development of the coal industry. We have predicted a concealed coalfield, confirmed by exploration. This coalfield geological profile, predict coal steps and experience are described below: I. Geological profile The coal field is located in a graben in this province, extending from the north east - southwest, a total length of 30 km and a width of 3 km, an area of about 90 square kilometers. An old Tertiary lignite coalfield (Figure 1). 1. Strata The strata in this area are composed of pre-Sinian metamorphic rocks, mixed rocks, Cretaceous red stratums and Tertiary coal-bearing formations (Figure 2). Exposed to the former Sinian on both sides of the coal field, the other strata are all Quaternary coverage. According to the drilling revealed, in order from the old to the new overview is as follows: