二维地震技术在慈圣镇东煤炭资源勘查中的应用研究

Application of 2D seismic technology in coal resource explorationin the east of Cisheng Town

为了寻找慈圣镇东煤炭资源,采用二维地震技术源,对研究区煤炭资源进行了勘查,共布设二维地震勘查线3条,设计地震物理点共计850个,测线长度16 km。研究得出,在获得的时间剖面长17.51 km中,其中Ⅰ类剖面10.22 km,Ⅱ类剖面长5.61 km。Ⅰ、Ⅱ类剖面长15.83 km,占90.4%,Ⅲ类剖面长1.68 km,占9.6%。分析了覆盖层厚度及变化情况,研究区新生界西南部较厚,东北部稍薄,厚度为925~1 025 m。查明了工作区构造轮廓,通过二次分析解释成果,共解释断层1条,即DF1断层;孤立断点2个;查明了二2煤层的构造形态及分布范围,二2煤层底板形态总体为一走向近东西向,倾向南的单斜,二2煤底板标高在-1 100~-1 600 m。

In order to find the coal resources in the east of Cisheng Town,the coal resources in the study area were explored by using 2D seismic technology sources.Three 2D seismic exploration lines were arranged,850 seismic physical points were designed,and the length of the survey line was 16 km.Research has shown that among the obtained time profiles with a length of 17.51 km,the ClassⅠprofile is 10.22 km long and the ClassⅡprofile is 5.61 km long.The length of ClassⅠand ClassⅡprofiles is 15.83 km,accounting for 90.4%,while ClassⅢprofiles are 1.68 km,accounting for 9.6%.The thickness and changes of the overburden are known.The thickness of the Cenozoic in the study area is relatively thick in the southwest and slightly thin in the northeast,ranging from 925 to 1025 m.The structural outline of the working area was found out.Through secondary analysis and interpretation results,a total of 1 fault,namely DF 1 fault,was interpreted;two isolated breakpoints;the structural form and distribution range of coal seamⅡ2 have been found out.The overall floor form of coal seamⅡ2 is a monocline with a strike near east-west and a dip to the south.The floor elevation of coal seamⅡ2 is-1100~-1600 m.