涵洞漏水,在中、小型水库中,几乎是一个普遍现象,长期以来一直难以解决。湖南娄底地区水电局研究成功了水库蓄水条件下的涵洞灌浆止漏技术,最近已通过技术鉴定。对于无压涵洞漏水的处理,过去常采用放空库水进行灌浆的方法。而在蓄水条件下,则没有止漏的办法。娄底地区水电局所采用的办法是: 对着漏水孔道,用钢钎凿孔,凿孔要求圆整,略大于钢管。有些漏水孔很大,漏水处管壁破碎不能打孔埋管,可在稍远处打孔,但高程应低于原漏水处,把漏水分开导出,再将原漏水处以水泥沙浆堵塞。孔深一般为25—35厘米,最大深度以打穿管壁为止。待孔打好后,把 Water leakage in culverts is almost a common phenomenon in medium and small reservoirs and has long been difficult to solve. Loudi Hydropower Bureau of Hunan Province has successfully studied the technology of culvert grouting and stopping leakage under the condition of reservoir water storage and has recently passed the technical appraisal. For the treatment of leakage of pressureless culverts, the past often used to empty the reservoir grouting method. In the water storage conditions, there is no way to stop leakage. Loudi Hydropower Bureau adopted the approach is: facing the leak hole, with steel brazing holes, perforation requirements round, slightly larger than the steel pipe. Some of the leaks are large, and the wall of the leaky pipe can not be punctured and can be punched at a distance. However, the elevation should be lower than the original leaking place, and the leakage should be led out separately. Then the original leaking place should be blocked with cement mortar. Hole depth is generally 25-35 cm, the maximum depth to break through the wall so far. After the hole is laid, put it