41 Result(s)
within
Bao** Shen
Earth Sciences
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Article
Open AccessPDERL: an accurate and fast algorithm with a novel perspective on solving the old viewshed analysis problem
Viewshed analysis based on the regular grid digital elevation model (DEM) is one of the basic functions of geographic information systems. Traditional viewshed analysis algorithms are mainly carried out in a g...
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U-Pb Isotope Geochronology of Syntectonic Granites from Hainan Island, South China: Constraints on Tectonic Evolution of the Eastern Paleo-Tethys Ocean
Since the recognition of the Indosinian orogeny in northern Vietnam, Triassic orogens have been widely identified around the western and southwestern boundaries of the South China block. The paleo-Tethys sutur...
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Nanoparticles Study on the Indosinian **aomei Shear Zone in the Hainan Island, China: Implication to Developmental Stage and Formation Mechanism of Nanoparticles in a Fault Zone
Nanoparticles are widely observed in the natural shear zone and experimental slip faults, which can lubricate the fault and significantly reduce the friction coefficient during seismic slip. But it is still no...
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Introduction
Rock mass is increasingly employed as the host medium for a vast array of human activities. Facilities like storage areas, wells, tunnels, underground power stations are located in a variety of rock types and ...
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Laboratory Studies of 2D and 3D Rock Fracture Propagation
To study mechanisms of crack propagation and coalescence in rock like-materials, several experimental studies were performed using gypsum specimens with pre-existing 2D and 3D cracks under uniaxial and true tr...
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Modelling Tunnel Failure and Fault Re-activation in CO2 Geo-sequestration
Failure of brittle rock is often associated with explicit fracturing events. Understanding fracturing behavior of rock masses has become a critical endeavour for not only civil engineering but also geological ...
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Applications for Deep Geothermal Engineering
There is mounting interest in develo** deep geothermal energy because of its abundant potential as the base-load renewable energy source. Numerical modelling has been widely used to advance the fundamentals ...
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FRACOD3D: A Three-Dimensional Crack Growth Simulator Code
This chapter first outlines the theory and an implementation of a well-established three-dimensional boundary element method, displacement discontinuity method (DDM), for a three-dimensional crack growth simul...
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Mine Stability and Water Inrush in Coal Mine
This chapter describes three major parts associated with mining stability and mine water inrush: The first part discusses the stability issues related to rock burst in deep underground coal mines, the second p...
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Introduction to the Theories of Rock Fracturing
This chapter provides the basic theories and principles behind rock fracturing and rock fracture mechanics. It starts with introducing the Griffith flaws and energy balance theory, which is the foundation of t...
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Application to Underground LNG Storage
This chapter introduces the underground LNG storage technology which is superior in safety, economic and environmental aspects to a conventional aboveground and inground storage type and shows various results ...
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Modelling Rock Fracturing Processes with FRACOD
Rock failure is often controlled by fracture initiation, propagation and coalescence, especially in hard rocks where explicit fracturing rather than plasticity is the dominant mechanism of failure. Prediction ...
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Article
Graphic Examples of a Logical Nonlinear Strength Criterion for Intact Rock
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Experimental Investigation on Rockbolt Performance Under the Tension Load
Rockbolt performance may vary differently under complex geological and stress conditions, especially dynamic disturbance at deep underground mining. Therefore, reinforcement mechanism needs to be further explo...
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Article
Failure Propagation of Pillars and Roof in a Room and Pillar Mine Induced by Longwall Mining in the Lower Seam
Underground mining using the room and pillar method leaves pillars to support the overlying strata. When longwall mining is used to extract a lower coal seam beneath the room and pillar mine, the bending of th...
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Extension Strain and Rock Strength Limits for Deep Tunnels, Cliffs, Mountain Walls and the Highest Mountains
Brittle rock can fail in tension even when all principal stresses are compressive. The culprit is Poisson’s ratio, but marked stress anisotropy due to a neighbouring free surface, and due to a raised principal...
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Experimental Investigation of the Progressive Failure of Multiple Pillar–Roof System
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Article
Identification of bacterial fossils in marine source rocks in South China
Based on the results of conventional geochemistry analysis including thin sections and SEM observations, different shapes of bacterial fossils, with size ranging from dozens of nanometers to several microns, w...
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Article
Geological characteristics and shale gas distribution of carboniferous mudstones in the Tarim Basin, China
Extant research on Paleozoic mudstone is well developed in the Tarim Basin, while the research on Carboniferous mudstone is relatively weak. Through systematic study of lithology, geochemical characteristics, ...
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Fracture Mechanics Modelling of an In Situ Concrete Spalling Experiment
During the operation of nuclear waste disposal facilities, some sprayed concrete reinforced underground spaces will be in use for approximately 100 years. During this time of use, the local stress regime will ...
