关键词: 灌浆工艺, 设计优化, 岩溶发育, 陶岔渠道枢纽工程

Abstract:

Taocha headwork hydro-complex project is the canal head of phase I project of the main diversion canal of Middle Route of South to North Water Diversion Project, where the geological conditions are characterized as broken mass, developed rock gap, and strong water permeability, thus bringing difficulties to the grouting construction. The grouting experiment was carried out for selecting typical section and strata, so the relevant parameters that should be strictly controlled during grouting construction such as pressure, discharge, water-cement ratio were obtained. A series of measures for optimizing the grouting construction technique were put forward by referencing to the engineering experiences of other projects, so it made sure that the dam foundation bearing capacity, anti-seepage and other indicators met the design and specification requirements.

Key words: grouting technique, design optimization, karst development, Taocha headwork hydro-complex project