The potential of sudden water accidents induced by damage to the bottom slab that forms a channel due action karst calls for research on law coal seam floors under coupling effect mining and water. In this study, situation floor rock was analyzed based theory mechanics fracture mechanics, combined with actual geological conditions floor. water-rock investigated using theoretical analysis mechan...

In the practical processes of coal mines and tunnel, rectangular roadways are widely used in underground environment. However, stress distribution law rock mass around is relatively complicated that influenced by different parameters, such as situ stress, geological structure, properties surrounding mass. It extremely significant to conduct systematic in-depth research regarding deformation fai...

Abstract In order to consider the influence of soil moisture content change on slope stability Hejin Cherry Valley Garden Project, this paper firstly selects samples at typical locations obtain shear strength test results loess under different content; Then, based rhinoceros and FLAC3D software, reduction method is used analyze stability, impact water comprehensively evaluated according safety ...

performing a probabilistic study rather than a determinist one is a relatively easy way to quantify the uncertainty in an engineering design. due to the complexity and poor accuracy of the statistical moment methods, the monte carlo simulation (mcs) method is wildly used in an engineering design. in this work, an mcs-based reliability analysis was carried out for the stability of the chain pill...

Nowadays, there is no precedent for building a high-speed railway in diatomite area. Due to the complex structure and poor mechanical properties of as well lack relevant engineering experience, more attention has been paid proper constitutive model tunnel layer using numerical calculation method, while traditional Elastoplastic most used yet. Therefore, relying on Feifengshan tunnel, through FL...

Coal resources have always been the focus of attention in field sustainable development. Based on problem surrounding rock control close-distance coal seams, first, a mechanical model floor failure was established based 29204 working face Dongqu Mine; mechanism revealed by zero displacement line, and method to judge occurrence state roof lower seam put forward. Furthermore, FLAC3D numerical sim...

In order to explore the dynamic evolution of overburden rock movement and mining-induced stress an ultra-high working face, taking face a 2# thick coal seam in shallow mine field as engineering background, this paper analyzes distribution characteristics principal stress, mining characteristics, migration caving under different advancing distances calculates by FLAC3D numerical simulation softw...

The study of ground motion effects at river valley sites is an important guide to site selection and seismic design. In this paper, FLAC3D numerical simulation used explore the influencing factors a site. By selecting four with different input spectrum characteristics, intensities, slope angles depth-to-width ratios, orthogonal test forms are designed determine calculation conditions, analysis ...

The behavior of a reinforced soil system depends on parameters such as the structural geometry, execution steps, density and mechanical properties soil, reinforcement materials, deformation, flexural stiffness materials. A critical parameter in design soil-nailed is optimal use materials with respect to cost. It necessary find an that cost-effective within affecting nailed system. common proble...