All of the hydraulic structures are arranged in the right bank and four underground seepage tunnels are arranged parallel in horizon , and the axle wires intersect with syncline axis almost perpendicularity , and with rock formation obtusely . complex underground tunnels are formed under such formidable conditions , and each of seepage tunnels crosses nuclear of syncline and comes up against interlaminar sharing disturbed belt at different footage 四条引水发电隧洞在平面上平行布置，轴线方向与本区构造线方向近于垂直，与岩层走向大角度相交，构成一复杂地下洞室群，并在不同洞段通过沙金坝向斜核部，且遭遇多条层间剪切错动带。
Kongxi buried hill shows following features in the seismic profiles : the structures are asymmetric . there is flexural syncline on the east side and a monocline on the west side . asymmetric repetition of stratigraphic units is present in the drill wells and the dips of beds and faults are gentle . the permo - carboniferous system of both sides almost lie in the same slope and the events of cambrian or upper proterozoic are continuous from east to west . the phenomenas suggest that kongxi buried hill could be a thrust belt been traced which consists of reverse faults . the imbricate faults mainly effect pre - jurassic strata . there are obvious angular unconformity between jurassic - cretaceous system and paleozoic involved deformation of thrust . the thrust front in some place has cut off the beds of jurassic - cretaceous system . the structural style of the thrust structure changes along the strike of the kongxi buried hill 地震和钻井资料揭露的孔西构造带前第三系潜山的地质特征可以归纳为：构造带总体上不对称构造带内部有地层重复现象石炭二叠系地层的位置明显高于两侧的同一地层的高度。用由34条向东倾斜的逆冲断层组成的叠瓦扇构造模式能够比较合理地解释上述地质特征。该带向东倾斜的逆冲叠瓦状断层组主要影响前侏罗系地层，侏罗白垩系与卷入逆冲构造变形的古生界地层之间有明显的角度不整合。
According to theory of the environmental isotope tracer and theory of deuterium excess ( d - excess ) parameter with the atmospheric water and the groundwater , the dissertation has comprehensively researched on the regional karst water and the pressure - bearing karst water in deep maoba syncline in virtue of routine geologic and geochemistry investigation 根据环境同位素示踪、大气降水氘过量参数和地下水氘过量参数演化理论，结合常规地质、地球化学工作，对该地区域岩溶水和毛坝向斜段核部深层岩溶承压水进行了综合分析研究。
And we pointed out the evolution of the first group which is the biggest level from north to south basically is limited by shaanbei syncline structure , the evolution of second group which is the mid - level form east to west or from west to east basically is limited by the bedrock joints , the evolution of the last one , which belongs to small level is limited by loess joints 经过分析和研究，认为黄土圾区是以厚层黄上体为载体的特殊地貌景观，其自身沟道发展演化具有特殊性，以鱼鳞状黄土崩塌为主的高角度陡倾河谷的加宽发展方式为特点，构成洛） 11式河谷发展演化模式。
The farther knowledge has been acquired that pressure - bearing karst water in deep maoba syncline is replenished by the atmospheric water from both east wing and west wing of maoba syncline , but which from east wing is more , and it is impossible that the pressure - bearing karst water from west wing rounds to replenish east wing . 3 得到进一步的认识；毛坝向斜核部的深部承压水，同时接受向斜东翼和西翼大气降水的补给，东翼的补给量相对大些；整个深部承压水不存在西翼绕过核部补给东翼的可能性； 3
