施工技术 2013年6月上 52 CONSTRUCTION TECHNOLOGY 第42卷第11期 D0I:10.7672/sgj2013110052 嘉陵江亭子口水电站帷幕灌浆试验研究 秦志国，熊高明 (中国水利永电第七工程局有限公司，四川成都610034) [摘要]嘉陵江亭子口水电站因地质条件复杂，岩体微裂隙相对较发育，特别是位于两岸坝肩的K长石石英砂岩 (俗称泡砂岩)，结构松散，孔隙率高，微裂隙发育，耐压性差，因而灌浆劈裂点低.重点解决的是砂岩、黏土岩、粉砂 岩、岩屑砂岩等的渗流问题.选择了有代表性的区域进行椎帷幕灌浆专项试验，以确保帷幕灌浆施工质量，完善施工 工艺. [关键词]水电站；帷幕；灌浆；试验；施工技术 [中图分类号]TV543 [文献标识码]A [文章编号]1002-8498(2013)11-0052-05 Test Study on Curtain Grouting for Tingzikou Hydroelectric Power Station in Jialing River Qin Zhiguo Xiong Gaoming Sinohydro Bureau 7th Co.Ltd.Chengdu Sichuan 610034 China) Abstract:The geological condition of Tingzikou Hydroelectric Power Station is very plicated.The micro cracks of the rocks are relatively well developed.Especially the K feldspar-quartz sandstone which is located at abutment along two banks has very low grouting splitting resistance because its structure is loose with high porosity well-developed cracks and poor pression resistance.The critical problem to be solved is the seepage of sandstone argillite rock siltstone and lithic sandstone etc. Curtain grouting test was conducted in a representative area to ensure the construction quality and improve the construction process for curtain grouting. Key words:hydroelectric power stations;curtains;grouting;testing;construction 1工程概况 3试验设计及施工方法 亭子口水电站帷幕灌浆设计总进尺6.5万m 3.1试验设计 帷幕灌浆初步设计方案为布置双排帷幕灌浆孔，孔 选定试验区域分A B2区，针对初步设计阶段 距2.5m;河床封闭帷幕及两岸山体主防渗帷幕按单河床坝段主帷幕及封闭帷幕分别设计为双排2.5m 排孔布置，孔距2.0m 特殊地质缺陷部位视情况 孔距及单排2.0m孔距的布置形式. 加密. 1)考虑到坝基岩屑砂岩、石英砂岩、粉砂岩等 2帷幕灌浆试验目的 地层的岩体微...
嘉陵江亭子口水电站帷幕灌浆试验研究.pdf
