水利水电技术2017，Vol.48Issue(2)：148-154,7.DOI:10.13928/j.cnki.wrahe.2017.02.025
用示踪探测技术优化岩溶水库防渗设计
Tracing detection technique-based optimization of anti-seepage design for karst reservoir
摘要
Abstract
Most of the medium and small-sized reservoirs within the karst areas in Guizhou Province are located at river-source areas,of which the karst seepage flow fields are complicated and various,and then are difficult to be correctly investigated,thus anti-seepage measures are difficult to get their due effects as well.By taking Lujiaba Depression Reservoir as the actual case,the application of tracing detection method to the optimization of the anti-seepage design for the karst reservoir is described herein by means of that taking the anti-adsorption treated-fluorescein as the chemical tracer and adopting F96C fluorescence ectrophotometer for the sample testing in accordance with the comprehensive consideration of safety,anti-adsorption performance,stability,uniform miscibility,naked-eye visibility,testability,etc.The result shows that the deep karst indicated by the geophysical prospecting made for Lujiaba Depression Reservoir is not related to the seepage of the reservoir and no any hidden seepage passages are there as well.The anti-seepage and blocking effect from the earlier stage grouting is significant and the water-flowing capacity of the subsurface stream system under Lujiaba Depression Reservoir is already reduced from about 3 m3/s to 0.4 m3/s,especially,the design requirement is also met by the effect from the single-row hole grouting accomplished in the Layer Ⅱ Gallery.Through the study on the tracing detection,the seepage design of the reservoir is more pertinent,thus can avoid the inappropriate and over-appropriate phenomena during the karst seepage treatment and then enhance the investment benefit.关键词
岩溶/水库渗漏/示踪探测/防渗优化Key words
karst/reservoir seepage/tracing detection/anti-seepage optimization分类
建筑与水利引用本文复制引用
张祯武,陈志强,高成城,任水源..用示踪探测技术优化岩溶水库防渗设计[J].水利水电技术,2017,48(2):148-154,7.基金项目
贵州省黔科合重大专项字(2007)6012部分成果 （2007）
