深覆盖区综合找煤技术方法在鲁西曹县煤田张湾勘查区中的成功运用

石炭二叠系是山东省重要含煤层位。鲁西曹县煤田3煤层上覆近千米的新生代地层，以其为主形成的地震反射波在张湾勘查区内可连续追踪，是3煤层构造解释和宏观结构解释的主要依据。区内煤系地层为一单斜构造形态，走向NW，倾向SW，倾角一般约2°～7°左右。通过区域地质分析、构造演化研究以及物探钻探相结合的综合勘查方法，山东省地质科学研究院对张湾勘查区进行了勘探评价，查明煤炭资源量6亿多吨。实践证明，区域地质分析、构造演化研究以及物探钻探相结合的综合勘查方法在深覆盖区找煤是行之有效的。

Successful Application of Comprehensive Coal Prospecting Methods in Deep Coverage Area in Zhangwan Exploration Area of Caoxian Coal Mine in Western Shandong

Carboniferous Permian is an important coal bearing position in Shandong province. No.3 coal stratum of Caoxian coalfield in western Shandong is covered with nearly one kilometers of Cenozoic strata. The seismic reflection waves mainly formed by it can be continuously tracked in Zhangwan exploration area, which is main basis for structural interpretation and macro structure interpretation of No.3 coal stratum. Coal strata in the area are in the form of monoclinic structure with the trend of NW and SW, and the dip angle is generally about 2 ° ~ 7 °. Through comprehensive exploration methods of regional geological analysis, structural evolution research and geophysical exploration and drilling, exploration and evaluation of Zhangwan exploration area have been carried out by Shandong Institute of Geological Sciences. More than 600 million tons of coal resources have been determined. It is proved that comprehensive coal prospecting methods of regional geological analysis, structural evolution research and geophysical exploration drilling is effective in coal prospecting in deep coverage areas.