比德向斜北西端勘查区构造特征及其影响

The structural characteristics and influences of northern and western exploration area of Bide syncline

根据比德向斜勘查区的地质勘查资料,分析其构造发育特征及展布规律。结果表明,勘查区内向斜开阔平缓、地层倾角平缓,背斜狭窄紧闭、地层倾角较陡,呈现侏罗山隔档式褶皱特征;断裂构造以NE—NNE向张性正断层为主,具有倾角大,落差大,多期活动性强烈,F;正断层带呈地堑式,F;逆断层带呈地垒式的特征。上述构造特征及规律性对勘查区工程地质、水文地质、瓦斯地质及开采利用等方面产生了重大的影响。

According to the geological exploration data of Bide syncline exploitation area, it’s structural development characteristics and distribution law are analyzed.The results show that in the exploration area, the syncline is open and gentle, the anticline is narrow and tight, which presents the characteristics of isolating-type fold of Jura Mountain;the fault structure is dominated by NE-NNE tensile normal fault, which has the characteristics of large dip angle, large drop and strong multi-stage activity.F;normal fault zone is graben type and F;reverse fault zone is horst type.The above structural characteristics and regularity have a significant impact on the engineering geology, hydrogeology, gas geology, mining and utilization of the exploration area.