... ABSTRACT: Deep rock mass is affected by loads such as upper self-gravity stress and tectonic ground stress, and the response of rock bodies under blasting dynamic loads is more complex. In order to study the energy evolution law and fractal characteristics of deep marble during the damage...

... ABSTRACT: The research was performed to assess the effects of loading frequency on mechanical characteristics of the Khao Ya Puk Formation sandstone in the northern part of Thailand. The aims of this research are to assess fatigue behaviour and compare stress-strain deformation in rocks...

... (Yang et al. 2017). The geometric characteristics and mechanical properties of these mineral grains have corresponding approximate ranges, such as average geometric size, volume proportion, distribution position, elastic modulus, tensile strength, cohesive strength, etc (Li et al. 2018). The difference...

... ABSTRACT: The existence of pores in granite can change its dynamic characteristics. In order to study the effect of pores on rock dynamic parameters during cyclic impact loading, a split Hopkinson pressure bar (SHPB) test system was used to conduct cyclic impact tests on granite samples...

... ABSTRACT: Earthquakes are known to be one of the natural disasters resulting in the huge losses of human lives as well as of properties as experienced in the recent great earthquakes. Ground motion characteristics, deformation and surface breaks of earthquakes depend upon the causative faults...

... damage during the construction of the underground project are analyzed, and the surrounding rock damage zone is delineated according to the characteristics of MS activity. Secondly, the moment tensor analysis method is introduced to analyze the propagation and connection of fractures in the surrounding...

... with an allowable block weight up to 500 kgf. Furthermore, the maximum horizontal acceleration applicable to the table is 600 gals. In this study, the authors describe the characteristics of this device as well as various tests for the dynamic characterization of rock discontinuities under both dry and saturated...

... ABSTRACT: The shale fracture characteristics are important for realizing the complex hydraulic fracture network, predicting wellbore fracture pressure and optimizing rock fragmentation efficiency. Through three-point bending test of notched semi-circular specimens, the coupled relationship...

... ABSTRACT: The strong heterogeneity of conglomerate, a main component of gravel layer, leads to severe vibration of drilling string and complex impact loadings. The strength and failure characteristics of conglomerate are not clear currently, which seriously restricts the drilling process...

..., Niu et al. 2020, Niu et al. 2022), IR (Li et al. 2022, Tian et al. 2021, Yin et al. 2021), Micro-seismic (MS) (Gao et al. 2014). Due to the existence of coal body defects such as cracks and joints, the mechanical properties, failure characteristics, and acoustic thermal response characteristics...

... material (CGM) is a three-dimensional heterogeneous multi-phase material involving aggregate phase, cementing phase, pore phase, and interfacial phase, such as concrete, asphalt concrete, rock, and sea ice. Its mechanical characteristics are extremely complex. Therefore, a deep understanding of the dynamic...

.... The authors conducted laboratory experiments to investigate the characteristics of Ryukyu Limestone with various ranges of porosity under static and dynamic conditions. The dynamic behavior of the interface between piles and Ryukyu Limestone were tested in the laboratory using a dynamic shear testing device...

... an insight view to stress changes of fault zones during earthquakes. 1 INTRODUCTION Fault zones are very common in the Earth's crust. The frictional properties and characteristics of faults govern the magnitude of earthquakes and resulting strong motions. However, there are almost no experimental studies...

... three-point bending and Brazilian tests under both impact and static loads. The authors discuss the experimental results and discuss the effect of the impact velocity and momentum on dynamic bending strength characteristics of rocks in this study. 1 INTRODUCTION Dynamic problems such as rockburst...

... ABSTRACT: In order to study the failure evolution characteristics of fractured coal rock under combined loading of graded pre-static load and different dynamic load amplitude levels, the coal rock with strong impact tendency of prefabricated fractures with different inclination angles...

... and construction of submarine tunnels. Many researchers have investigated the dynamic characteristics under cyclic loading by using dynamic triaxial tests on different soils, taking into account various factors such as the number of cycles, dynamic stress ratio, surrounding pressure (Schaeffer et al. 1999, Sun et...

... monitoring experiment was carried out on the granite plate cracking samples, the thermal infrared radiation characteristics were quantitatively analyzed, and the damage process of the plate cracking structure was studied. The results show that there are three types of rock plate failure in samples: bending...

... ABSTRACT: Anchored pile structures is one flexible retaining structure that widely used in the slope stabilization and landslide prevention. However, the dynamic characteristics of rock slope reinforced by this retaining structure has not been systematically studied and remain poorly...

... ABSTRACT: In recent years, deep resource extraction has become the norm, and the research on damage of tunnel surrounding rock by blasting vibration is an important section of deep underground engineering that cannot be ignored. The study of the damage characteristics of surrounding rock can...

... depths, and verified the accuracy of the numerical simulation results based on the test results. geologist reservoir geomechanics fi cation geology geological subdiscipline boundary mathematics of computing reservoir characterization interface characteristic damage characteristic...