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结合天生桥一级水电站放空隧洞水泥灌浆工程的实践，从现场监理的角度讨论了“水工隧洞灌浆”的若干问题，对现行施工技术规范ＳＬ６２—９４的相关条款提出了修订意见，包括：建议将固结灌浆结束标准由“注入率Ｑ不大于０．４Ｌ／ｍｉｎ”改为“透浆率ｑ（ｑ＝ＱＰＬ）不大于某值”；建议将回填灌浆检查孔的数量规定由“灌浆孔数的５％”改为“与回填面积成比例，每１００～１５０ｍ２布一检查孔”。此外，还分析了固结灌浆孔分布密度的适当设计问题，介绍了施工单位提出的两项加快进度的技术措施，可供类似工程借鉴。
Combined with practice of cement grouting in the tunnel of Tianshengqiao First-cascade Hydropower Station, some problems of “hydraulic tunnel grouting” were discussed from the point of view of on-site supervision, and some amendments were proposed to the relevant provisions of the current construction specification SL62-94, including: The standard of consolidation grouting should be changed from “injection rate Q not more than 0.4L / min” to “the permeation rate q (q = QPL) not greater than a certain value”; it is suggested that the number of backfill grouting inspection holes should be changed from “grouting hole number Of the 5% ”to“ and backfill area is proportional to every 100 ~ 150m2 cloth a check hole. ” In addition, the proper design of the distribution density of consolidation grouting holes is also analyzed. Two construction measures put forward by construction units are introduced, which can be used for reference for similar projects.