地基劈裂灌浆的本构关系──冶勒水电站第三岩组灌浆机理分析  

Constitutive Relation of Splitting Grouting in Foundation──Analysis on Grouting Mechanism of The Third Rock Group at Yele Hydropower Station

作　　者：王民寿[1] 樊天龙[2] 蒋晓明[2] 

机构地区：[1]四川联合大学,四川成都610065 [2]四川省电力工业局,四川成都610061

出　　处：《四川水力发电》1997年第4期82-87,共6页Sichuan Hydropower

摘　　要：用弹塑性断裂力学的观点解释冶勒水电站第三岩组水泥帷幕灌浆取得成功的机理，正确描述了在强团结、弱胶结的地层劈裂灌浆的三个力学效应──劈裂的浆刃效应、充填的扩张效应、挤密的回弹效应。基于地层厚度、裂纹长度与裂纹张开宽度之比甚大，提出了采用无限板宽的半无限裂纹的合理近似假定，从而为求解灌浆中的相关参量确定了较为合适的效学模型。对G·隆巴迪有关浆液的最大扩散放半径、最大灌入量和最大总的上抬力的理论计算公式提出了修正意见。From elastical and plastical fracture mechanics point of view,the mechanism for successful cement curtain groutingin the third rock at Yele hydropower station is explained. Three mechanical effects during splitting grouting in strong consolidated and weak cementated strata are correctly described. They are grouting blade effect during splitting,expanding effect during filling and rebound effect during squeezing. Because strata depth and the retio between fissure length and fissure openwidth are large,a resesnable and approximate assumption for semi-limited fissure of limitless is atopted. Therefore,the appropriate mathematic model is determined for obtain the correlated parameters in grouting. Modified suggestions are proposed toG. Lombardi theoretical formulas which are related to the maximum diffusion radius of grout .the maximum grout take and themaximum total lifting force.

关 键 词：劈裂灌浆 灌浆机理 地基灌浆 加固 水电站 

分 类 号：TV223.34[水利工程—水工结构工程]