亭下水库发电洞于1981年6月上旬浇筑结束,下半年出现了部份不连续的裂缝,至1982年5月检查,发现大小裂缝9条,其中8~#裂缝已发展成完整的环向基础贯穿裂缝。见图1。缝上部在坝外镇墩上清晰可见,缝底部与岩石基础贯穿,每小时涌水量达10公升。洞内 Tingxia reservoir power hole in June 1981 early pouring the end of the second half of the emergence of some of the discontinuous cracks to May 1982 inspection and found that the size of cracks 9, of which 8 ~ # cracks have developed into a complete ring The foundation runs through the cracks. see picture 1. The upper part of the seam is clearly visible on the pier outside the dam. The bottom of the seam runs through the rock foundation with an influx of 10 liters per hour. Inside the cave