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下坂地水利枢纽导流泄洪洞底洞浇筑时发现有裂缝出现,经分析属于温度裂缝。由于导流泄洪洞为长年过水隧洞,河水会通过裂缝对钢筋产生侵蚀作用,加之内水外渗和外水内渗都会对导流洞的正常运行带来不利因素,长期下去,对导流洞运行安全将造成极大危害,因此必须对裂缝进行处理。
Under the pouring of the bottom of the diversion tunnel of Xiabandi Water Conservancy Project, cracks were found and the analysis belonged to temperature cracks. As the diversion tunnel is a long-term over-water tunnel, the river will have an erosion effect on the steel bar through cracks. In addition, the internal and external water infiltration will bring unfavorable factors to the normal operation of the diversion tunnel. In the long run, The safety of flow holes will cause great harm, so cracks must be dealt with.