论黄陵背斜水平滑移兼论三峡水库绕黄陵背斜渗漏

ON HORIZONTAL SLIPING OF HUANLING ANTICLINE AND POSSIBLE LEAKAGE AROUND THE ANTICLINE IN YANGTZE GORGE RESERVOIR

本文以黄陵背斜盖层形态判定了黄陵背斜的隆起、水平滑移直至构造应力方位,探讨了黄陵背斜盖层的层间滑脱构造,进而提出了未来三峡水库的水有绕黄陵背斜盖层沿这些滑脱构造发生渗漏的论断。作者依现有构造形态,粗算了黄陵背斜向S236°W方向水平滑移16.5km,垂直隆起4.85km,同时也估量了未来三峡水库可能渗漏途径长约42.8km。

The interlayer detachment structurces of thecovering formation in Huangling anticline arediscussed in this paper based on the horizontalslipping movent.Besides surface geological evidence, the inter-layer detachment has been reflected by the flo-wing direction of the four rivers in this area,including the part of the Yangtze river, along theinterlyer position within the same formation.Water leakage of the proposed Yantze Gorgereservior would readily occur along these deta-chment structures and in the southern triargulararea of the Huangling anticline where karst iswidespread.According to the present structural features,it is estimated that the horizontal slippage of theHuangeing anticline is about 16.5 km towards,SW 236, the vertical uplift value, about 4.85 km,and the potential leakage in the area of the Yan-gtze Gorge reservoir, about 42.8 km in distance.