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王洼勘探区位于固原含煤区,勘探区整体为一走向近南北至北北西、向东倾伏的单斜构造,地层走向与构造的走向基本一致。在详查阶段确定区内发育王洼背斜、范新庄向斜。通过王洼扩大勘探后,根据新增钻孔资料分析,区内西南部发育一条走向NNE,倾向W的正断层(F7),倾角60°～80°,由南部延伸至勘探区,落差0～200m,尖灭于中北部的第4勘探线附近。据此认为原定的王洼背斜、范新庄向斜实为断层F7在断裂过程中所引起的牵引变形。
The Wangwa exploration area is located in the Guyuan coal-bearing area. The exploration area as a whole is a monocline structure that is nearly north-south, north-northwest and east-trending. The strike of the strata coincides with that of the structure. Determine the stage in the detailed investigation Wangwa anticline, Fan Xinzhuang syncline. According to the analysis of the newly added borehole data, a normal fault (F7) is developed in the southwestern part of the area toward NNE with a dip angle of 60 ° ~ 80 ° and extends from the south to the exploration area with a drop of 0 ~ 200m, pinned off in the north of the fourth exploration line in the vicinity. Therefore, it is considered that the original Wangwa anticline and Fanxinzhuang syncline are the traction deformation caused by fault F7 in the fracture process.