Affected by mining stress, roadways surrounding rock face problems such as serious deformation and failure difficult support. In this study, with the II2 area rise in Taoyuan Coal Mine taken engineering background, evolution laws of plastic zone rises during advance process working were explored aid FLAC3D software. The results suggested that increase significantly when distance between track i...

The process of excavating roadway, shafts, and exploiting coal seams located near the ground may cause subsidence surface, cracking, damage to structures on surface. Therefore, it is necessary rely specific conditions site calculate forecast level impact works when excavated ground. Based topographical conditions, geological hydrogeological current status technical design excavation twin inclin...

In order to solve connectivity problems in metropolitan areas, the development of underground metro lines constitutes an unquestionable requirement. However, construction work thereof encounters unfavourable circumstances when surface excavations must be carried out that cross historical areas city, due need control movements. The design city Seville (Spain) from 2004 2006 provides a representa...

The stability of the gas extraction roadway is very important for safe mining coal and gas. compression arch formed by combined action prestressed bolt (cable) support surrounding rock has been widely used in engineering practice roadway. It great application value to analyze influence parameters on arch. In this paper, with deep Huainan Huaibei area Anhui Province, mechanical are measured via ...

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...

Abstract The recent development of the TOUGH3 code allows for a faster and more reliable fluid flow simulator. At same time, new versions FLAC3D are released periodically, allowing features execution. In this paper, we present first implementation coupling between FLAC3Dv6/7, maintaining parallel computing capabilities coupled geomechanical codes. We compare newly developed version with analyti...

The Himalayan region has enormous potential for hydropower development. However, variations in geological and geotechnical conditions pose challenging tasks the designers. If these are not tackled a timely manner during underground excavations, especially caverns, instabilities may occur, resulting time cost over-runs. For sustainable development, minimizing over-runs is necessary. modulus of d...

Evaluations of the risk fault-induced water inrush hazard is an important issue for mining engineering applications. According to characteristics seam floor during advancing, a mechanical model fault activation built obtain equations normal stress and shear on surface fault, as well mechanics criterion activation. Furthermore, using FLAC3D numerical software, variation under two different advan...

Hard rock pillar is a crucial mass structure to maintain the stability of underground mine. It needs special attention analyze its from point quality. In this paper, geological strength index (GSI) representing quality hard examined as new influence factor stability, and combined with conventional parameters (uniaxial compressive (UCS) intact mass, width (w), height (h), ratio (w/h)) complete s...