标题：Evaluation of the Grouting Effect of the Change of Grout Hole Spacing in Splitting Grouting for Dams
作者：Wu Ke; Ma Mingyue
作者机构：[Wu Ke] Shandong Univ, Geotech & Struct Engn Res Inst, Jinan 250100, Shandong, Peoples R China.; [Wu Ke] Key Lab Minist Educ Geomech & Embankment En 更多
会议名称：International Conference on Mechatronics and Materials Engineering (ICMME 2011)
会议日期：DEC 10-12, 2011
来源：NEW TRENDS IN MECHATRONICS AND MATERIALS ENGINEERING
关键词：dam; splitting grouting; numerical simulation; fluid-solid coupling
摘要：The technique of splitting grouting for dams is one of the important technical approaches to improve the inner quality of dam construction. However, the construction cost is too high with the current technological standard, which restricts the further promotion of this technology. Based on the assumption that the other conditions of construction process remained unchanged and by obeying the law of interaction between the placement of grout-hole spacing and the actual anti-seepage effect during splitting grouting, Mohr-Coulomb Hardening constitutive model was adopted in this paper on the basis of large-scale finite element numerical algorithm. Through the fluid-solid coupling computation of grout holes of different spacing, the distribution law of various factors during splitting grouting, such as the pore water pressure generated by seriflux and the stress and strain of dam, was studied first. Next, the mechanism of reinforcement and seepage of splitting grouting seriflux in soil body was revealed, and the influence of this mechanism on the stability of dam body was also investigated. Finally, the effect of splitting grouting was evaluated.