摘要
目前，土坝坝体劈裂灌浆压力设计是以纯张裂理论为基础的，仅考虑了切向应力的作用，实际上，灌浆孔受力分析可视作平面应变问题。因劈裂是在二维主应力作用下发生的，初始裂隙应是剪切性质的破坏。据此，给出了更切台实际的劈裂灌浆控制压力设计公式，并用工程实例说明具体计算步骤及两种方法的结果对比。
The Design of the splitting grouting pressure in tbe body of a soildam is based on the pure tensile crack theory. This method only considers theaction of the tangential stress.In fact.the stress analysis of the grouting boleould be regarded as the plane strain problem.As the splitting of the soil dambody takes place under the action of the two-dimensional principal stress.the initial fissure should be the shear failure. In view of the above.we had estab-lished a design formula which might accord better with the practice. And theengineering example was uscd to state the detail calculation stages. and theresult comparison of the two methods.
出处
《江西水利科技》
1995年第2期69-73,共5页
Jiangxi Hydraulic Science & Technology
关键词
土坝
坝体
劈裂灌浆
压力控制
设计
The dam body
Splitting grouting. Principal stress
