高压摆喷灌浆技术在坝基防渗加固修复中的应用
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摘要
为解决七里坡水库大坝坝基渗漏问题,结合安全鉴定成果和高压喷射灌浆技术优势,选取在大坝上游坝坡增设垂直防渗体的加固修复处理方案.采用摆喷灌浆技术,对坝体和坝基粉砂层、河流冲积层及强风化基岩进行高压水泥浆液灌注,硬化后形成固结体实现对渗漏通道的有效堵截.经现场开挖检查、围井注水试验、室内检测和渗流监测,结果表明:防渗墙体整体连续性和密实度均较好,各项检测指标均满足设计规范要求,坝基渗漏得到有效处理.
Aiming at the seepage of dam foundation in Qilipo Reservoir,combined with the safety appraisal analysis and the advantages of high pressure jet grouting technology,the reinforcement scheme with additional vertical anti-seepage body at dam up-stream has been adopted. Using the swing grouting technology,the dam and dam foundation silt layer,river alluvial layer and strong weathering bedrock has been grouting by high pressure cement slurry,and the leakage passage can be effectively intercepted by the hardened solidified structure. Every index of the seepage control body with good overall continuity and density is proved to meet the requirements of design by excavating checks,water injection experiments,indoor sampling inspections and seepage monitoring. The foundation leakage has been effectively treated with good anti-seepage effect.
Aiming at the seepage of dam foundation in Qilipo Reservoir,combined with the safety appraisal analysis and the advantages of high pressure jet grouting technology,the reinforcement scheme with additional vertical anti-seepage body at dam up-stream has been adopted. Using the swing grouting technology,the dam and dam foundation silt layer,river alluvial layer and strong weathering bedrock has been grouting by high pressure cement slurry,and the leakage passage can be effectively intercepted by the hardened solidified structure. Every index of the seepage control body with good overall continuity and density is proved to meet the requirements of design by excavating checks,water injection experiments,indoor sampling inspections and seepage monitoring. The foundation leakage has been effectively treated with good anti-seepage effect.
引文
[1]侯秀娟,张新利,伏晓娟.高压摆喷灌浆技术在水库除险加固工程中的应用[J].水利与建筑工程学报,2011,9(6):150-154.
[2]刘晓钟,朱元文.高压旋喷灌浆生产性试验研究[J].浙江水利水电专科学校学报,2013,25(1):4-6.
[3]陈辉.高压摆灌浆施工技术在堤防防渗处理工程中的应用[J].陕西水利,2015(4):81-82.
[4]吴阳锋,吴国芳.坝基帷幕灌浆在石门坎水库除险加固中的应用[J].浙江水利水电学院学报,2015,27(4):13-16.
[5]张烁.高压摆喷灌浆在新立城水库除险加固工程中的应用[J].吉林水利,2011(2):28-30.
[6]吕福财,朱建华,周兵,等.围井试验法在防渗墙工程质量检测中的应用[J].水利科技与经济,2008,14(12):1032.
[7]郭经武.高压摆喷灌浆技术在小海子水库决口修复及完善工程中的应用[J].甘肃水利水电技术,2011,47(03):57-59.
[8]张峰,高宜能,卢勇.高压摆喷防渗墙在大治河闸站工程中的应用[J].水科学与工程技术,2010(6):77-79.
[2]刘晓钟,朱元文.高压旋喷灌浆生产性试验研究[J].浙江水利水电专科学校学报,2013,25(1):4-6.
[3]陈辉.高压摆灌浆施工技术在堤防防渗处理工程中的应用[J].陕西水利,2015(4):81-82.
[4]吴阳锋,吴国芳.坝基帷幕灌浆在石门坎水库除险加固中的应用[J].浙江水利水电学院学报,2015,27(4):13-16.
[5]张烁.高压摆喷灌浆在新立城水库除险加固工程中的应用[J].吉林水利,2011(2):28-30.
[6]吕福财,朱建华,周兵,等.围井试验法在防渗墙工程质量检测中的应用[J].水利科技与经济,2008,14(12):1032.
[7]郭经武.高压摆喷灌浆技术在小海子水库决口修复及完善工程中的应用[J].甘肃水利水电技术,2011,47(03):57-59.
[8]张峰,高宜能,卢勇.高压摆喷防渗墙在大治河闸站工程中的应用[J].水科学与工程技术,2010(6):77-79.