this research examines the behavior of soil-reinforced piles and applied loads based on the analytical method and by using the numerical results of flac3d software for comparison with the analytical results. the analysis was based on a method called virtual retaining wall, the following into consideration: an imaginary retaining wall that passes the footing edge the bearing capacity of footing ...

The construction of undercrossing roads often has an adverse effect on the upper existing railway line, and can cause uneven subsidence crossed section. In response to influence new road high-speed bridge, a highway passing under bridge was taken as research object. Based FLAC3D finite difference software, computational model established analyze structural deformation bridge. results show that ...

In order to study the local deformation of an anchor bolt and improvement in shear strength a structural surface under misalignment anchorage structure surface, FLAC3D software was used simulate granite, sandstone, coal specimens with angles 90° analyze damage anchoring agent changes axial forces bolts surface. The results show that near had significant characteristics surface; is, length area ...

Under high dynamic load, roadway deformation and failure may occur, posing great challenges. As for now, few studies have been carried out on the impacts of various factors surrounding rocks under not to mention those intelligent prediction laws. This paper fills these research gaps by studying characteristics method load. The finite difference software Flac3D was used analyze influences buried...

Sudden falls of large-area hard roofs in a mined area release a large amount of elastic energy, generate dynamic loads, and cause disasters such as impact ground pressure and gas outbursts. To address these problems, in this study, the sleeve fracturing method (SFM) was applied to weaken a hard roof. The numerical simulation software FLAC3D was used to develop three models based on an analysis ...

A thin coal seam mined as a protective coal seam above a gas outburst coal seam plays a central role in decreasing the degree of stress placed on a protected seam, thus increasing gas permeability levels and desorption capacities to dramatically eliminate gas outburst risk for the protected seam. However, when multiple layers of coal seams are present, stress-relieved gas from adjacent coal sea...

Stability of the retained goaf-side gateroad (RGSG) is influenced mainly by the movements of the roof strata near coal seam after coalface passes by. To make effective controlling technology for the stability of the RGSG, we analyze the roof structure over the RGSG to illustrate the mechanism causing the RGSG instability under different roof conditions. We then examine the dynamic evolution of ...