The frequent earthquake disasters in mountainous areas recent years have brought great challenges to the slope safety. According upper bound theorem, strength reduction method and quasi-static method, a 3D failure model under is established study expression of safety factor derived solution optimized. Each parameter’s influence on analyzed. And potential fracture surface different working condi...

For the study of driving forces behind fault activation and its influencing factors on barrier effect rock mass movement under influence mining, discrete element numerical simulation software 3DEC was used for analysis impact distance to mining area from fault, buried depth upper boundary dip angle size thickness zone respectively. The results show that areas are closer as distances decrease, b...

The specific length of a tunnel (STL) and new analytical model for calculating the block surface area rock mass are introduced. First, method determining appropriate numerical simulation is described. then used to examine correlation between inflow rate volume, area, fracture intensity (P32) through modeling. results indicate that should at least be equal common multiple (LCM) apparent spacings...

In the drifts of underground metal mines, extraction rock mass discontinuity characteristics from point cloud models generated with laser scanning has become main approach. However, exposure discontinuities is restricted in drifts, and size cannot be measured directly. Therefore, it necessary to use a reasonable sampling tool estimate mean trace length that are mapped model. this paper, method ...

Gas disasters, such as coal and gas outburst overflow, always occur during the mining of steep extra-thick seam in horizontal, fully mechanized, top slice caving (HFMTCSC) method. To solve these issues guarantee safe efficient Yaojie No. 3 mine, 3DEC software was used this work to investigate overburden movement collapse law well stress redistribution coal-seam deformation characteristics below...

Sismik olarak aktif bölgelerde yer alan çok sayıda tarihi yığma anıta sahip ülkeler vardır ve bu yapıların korunması büyük önem taşımaktadır. Bu bakımı kültürel, ekonomik sosyal bir ihtiyaç olduğundan, sismik performansının değerlendirilmesi ele alınması gereken önemli konudur. tür yatay deprem yükleri altındaki davranışı, dolgulu dolgusuz duvarların etkileşimi nedeniyle karmaşıktır. İstanbul'd...

In this paper, taking a mine in Xinjiang as the engineering background, through combination of physical simulation experiment, 3DEC numerical calculation, theoretical analysis and field monitoring, fracture evolution characteristics overlying strata its influence on stability support under unbalanced loading conditions are systematically studied. The results show that action gravity-dip effect,...

The aim of this paper is to present the development discontinuous approaches simulate nonlinear dynamic behaviour civic clock tower Rotella, in province Ascoli Piceno (Italy). study involves use Non-Smooth Contact Dynamics method implemented LMGC90© code, where sliding motions are governed by Signorini's impenetrability condition and dry-friction Coulomb's law, Discrete Element Method with cohe...