Due to the complexity and untraceability of grouting process underpinning slurry diffusion law, current study on properties alluvial filler soil lags behind engineering application. Therefore, model tests, including a laboratory test dynamic penetration test, are developed in this investigate law strength characteristics soil. Through excavation model, pattern can be observed precisely. Then an...

The surrounding rock of deep roadway is mostly composed fractured rock. deformation complicated, which not only involves the stress change, but also support means. This paper aims to study and fracture evolution law in underground engineering. According rebalancing characteristics, after excavation, development characteristics cracks are studied. At same time, different seepage zones divided ac...

In this paper, three kinds of shear walls with full sleeve grouting, fully defective and partially are designed for finite element analysis to analyze the influence defects on seismic performance walls. The research shows that at beginning loading (5 s), models begin appear compressive damage bottom wall in all models. defect-free model develops rapidly, is basically same as model. With gradual...

Floor grouting reinforcement and aquifer reform can effectively improve the water barrier performance of fractured rock mass, which is widely used to prevent inrush from a confined in theClean Utilization SDUST Research Fund floor. In order reveal mechanical strain energy characteristics mass after with different parameters, discrete element numerical simulation software PFC study limestone fil...

The existence of karst cavities has an important impact on the safety foundation pit excavation projects. It is engineering guiding value to study influence blasting process pits and how optimize stiffness cement mortar improve effect. Based bench project Shenzhen Dayun Foundation Pit Project, this paper adopts SPH-FEM coupling calculation method cavities, cavity-filling water silt clay rock-bl...