Figure 3

Distribution diagram of long and outward sloping cracks of slope on the left side of spillway tunnel outlet. 1. Dengying Formation grey–light grey thick layer dolomite; 2. Guanyin Rock Formation gray thin layer dolomite with thin layer and extremely thin layer shale; 3. Gray thin layer dolomite (specifically refers to the lower reaches of the Huashangou fault in the left bank of the Lixue Formation); 4. Gray, brick red interlayer with thin layer limestone; 5. Geological faults; 6. Lithologic boundary; 7. Cracks in incline slope; 8. Outside slope cracks.