摘要
Abstract
According to the bedrock curtain grouting test of the plastic concrete cut-off wall of the Da ning reservoir at Beijing Section in the South-to-North Water Diversion Project,the grouting test scheme is illustrated from the aspects of the selection of grouting test locations,grouting pressure,slurry flux proportion,grouting order,grouting method,and effect checking of grouting. Moreover, the statistical analyses on four aspects are obtained, which include the pressure water permeability values (Lu) before and after grouting with different hole sequences, the relationships between the unit infusing volumes and different hole sequences,the pressure water permeability values (Lu) of the inspection holes and pilot holes before grouting,and the water permeability values (Lu) in each section of the inspection holes. Based on the results from the statistical analyses and the decreasing grouting pressure with the lifting of the cut-off wall during the test,the construction parameters for the bedrock curtain grouting of Da ning reservoir are determined, which can provide the technical support for the grouting construction.关键词
大宁水库/基岩灌浆/灌浆试验/成果分析/灌浆参数/选定Key words
Da'ning reservoir/ bedrock curtain grouting/ grouting test/result analysis/ grouting parameters selection分类
建筑与水利
