Fracture grouting is widely used for building foundation reinforcement, however the underpinning mechanisms are still not clear. Using numerical results about a single-hole fracture process as basis, model composed of soil and veins has been created to analyze reinforcement mechanism. The influence weights vein skeleton compaction effect have studied, thereby obtaining relevant information on c...

in this paper, the grouting ability of sandy soils is investigated by artificial neural networks based on the results of chemical grout injection tests. in order to evaluate the soil grouting potential, experimental samples were prepared and then injected. the sand samples with three different particle sizes (medium, fine, and silty) and three relative densities (%30, %50, and %90) were injecte...

In this paper, the grouting ability of sandy soils is investigated by artificial neural networks based on the results of chemical grout injection tests. In order to evaluate the soil grouting potential, experimental samples were prepared and then injected. The sand samples with three different particle sizes (medium, fine, and silty) and three relative densities (%30, %50, and %90) were injecte...

This study aims at presenting a numerical model for predicting grout flow and penetration length into the jointed rock mass using Universal Distinct Element Code (UDEC). The numerical model is validated using practical data and analytical method for grouting process. Input data for the modeling, including geomechanical parameters along with grout properties, were obtained from a case study. The...

When underground space requires excavation in areas below the water table, foundation system suffers from buoyancy, which leads to uplifting of superstructure. A deep can be used; however, cases where a hard layer is encountered, high driving forces and corresponding noises cause civil complaints urban areas. Micropiles an effective alternative option, due their performance despite short instal...

In order to study the subsidence characteristics caused by large diameter shield tunneling in coastal soft soil area, based on project of North Oujiang tunnel Wenzhou City, displacement field, seepage field and stress surrounding rock during construction process under fluid-solid coupling were analyzed using finite difference method. The results show that when passes through monitoring section ...

Perencanaan pembangunan Bendungan Pidekso di Kabupaten Wonogiri dengan tipe bendungan urugan berkemungkinan gagal. Salah satu kerusakan yang terjadi adalah rembesan. Terjadinya rembesan dapat menyebabkan terbentuknya pipa-pipa dalam tanah. Tujuan dari adanya penelitian ini yaitu untuk mengetahui perbedaan debit sebelum dan sesudah grouting serta faktor keamanan piping. Metode digunakan berupa p...

Coal seam gas pressure is an important index to evaluate the risk of coal outbursts. The accuracy measurement closely related quality hole sealing, and reasonable grouting one key factors determine sealing. To obtain a pressure, mathematical model for slurry flow was established based on relationship between seepage law properties borehole surrounding rock. According conditions working face 111...