... ABSTRACT: This study focuses on the disaster-causing mechanism and sliding characteristics of sudden deep landslides in the loess area of Xiangning county of China. The continuous-discontinuous element method is employed to simulate the overall process of landslides from deformation...

..., problems such as bearing capacity of bridge foundation, stability of cut slope with large-scale caverns, and ground subsidence due to tunnel excavation have emerged during civil engineering work in limestone geology. In this paper, as a new case related to these unique characteristics of limestone geology...

... ABSTRACT: The numerical simulation is carried out for the dynamic response characteristics of cave-type excavation at the left dam abutment of Zhongyu Hydropower Station. The results show that within the range of 20∼100 m from the explosion source in the vertical direction, both the peak...

... to evaluate potential susceptible areas through 1) the study of the historical activity (1945-2022) and 2) through geomechanical outcrop surveys of caprock units (Brady & Brown 1985) to characterize block size and mechanical aperture (ISRM 1978) for 3) to calculate hydrological characteristics...

... space-time evolution characteristics, many studies have focused on using panel data model to analyze dam deformation behavior. Shi et al. (2016) introduced dummy variables and established variable-intercept panel models to analyze deformation behavior of different dam zones, which shows high explanatory...

... shear deformation deformation countermeasure earthquake resistance characteristic rebar displacement rockbolt tokyo metropolitan university uniaxial compressive strength 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Characteristics of reinforcement...

... in the acute-angle of the corners of the rhombus-shaped pillars. A parametric study is carried out to quantify the effect of inclination on the failure characteristics of inclined pillars and surrounding rock mass. Based on the study, an adequate size of pillars and an effective support system have been...

... ABSTRACT: This paper assesses the fracture development characteristics of the rock mass around the sublevel and shrinkage stopes under steep thick orebody using 3DEC and Surpac, and redetermines the boundary of the protective pillar area for the dressing plant. A 3D solid model was constructed...

... are modelled with shear bands. The approach is enriched with microstructural characteristics of mineral inclusions and clay matrix. The material mesostructure and behaviour are embedded in a representative elementary volume. A double-scale numerical framework (FEM×FEM) with computational homogenisation relates...

.... Using the finite element program, the influence of the rock mass zoning on the stability results and on the dimensions of the required reinforcement were analyzed. The stress relaxation method was considered, defining the characteristic curves for the rock and for the reinforcement. A comparative...

... ABSTRACT: Hydraulic fracture has become one of the technical means for efficient development of oil and gas reservoirs, and the brittle rock damage characteristics are the key mechanical indicators for fracturing to form complex fracture networks. The current research on brittle rock...

... the importance of understanding how weathering acts on rocks, awakening a search for knowledge of its susceptibility to weathering and not just its resistance properties to attend design requirements. In the engineering field, alteration is any process that modifies the characteristics that affect...

... been reported, such as Laurentian granite (Wu et al. 2015). To measure the effect of bedding planes on failure characteristics and anisotropic tensile strength of layered rocks, some SHPB tests have been conducted on coal, phyllite, slate and shale (Qiu et al. 2017, Liu et al. 2020, Yang et al. 2020...

... characteristic upstream oil & gas china government concrete-rock interface rock-concrete interface geologist asia government tensile strength simulation numerical simulation interface reservoir geomechanics roughness engineering figure 6 calibration civil engineering figure 1 fluctuation...

... ABSTRACT: As an unconventional energy, shale gas is being developed widely. As one of the core means of development for shale gas, hydraulic fracturing is greatly affected by the mechanical properties of shale, especially its anisotropy and shear characteristics related to the activation...

... ABSTRACT: Field stress conditions have a significant impact on the mechanical characteristics of jointed rock masses. This paper investigates and discusses the effects of joint spacing and confining pressure on the dynamic properties of a jointed rock mass. The RCA was used to test jointed...

... strength criteria plane bedding plane longmaxi shale rock mechanic group-p group-v specimen rock type mudstone criterion international journal characteristic bedding activation fracture 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG The tensile...

... ABSTRACT: All kinds of fracture discontinuities in granitic host rock of high level radioactive waste (HLW) repository not only degrade the engineering characteristics of rock mass, but also constitute potential groundwater seepage channels and nuclide migration channels. During repository...

... normal load and 300 kN cm torque was prepared, and the proposed test was conducted using prismatic mortar specimens which strength are equivalent to soft rock (UCS < 25 MPa). The size of the prismatic specimen is 20 mm height, 20 mm width, and 70 mm depth. The stress-strain characteristics...

... uniaxial compressive strength spain government tolerance madrid convexity deviation dinrock group restriction characteristic influence universidad 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Influence of shape surface on the actual stress...