23 Result(s)
within
English
Civil Engineering
**dong Jiang
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Article
Dynamic characteristics of rotor system with parallel and angular misaligned involute spline coupling
Spline couplings are commonly used to transfer rotary motion in rotating structures, such as low-pressure rotor systems in dual-rotor aero-engines. The misalignment introduced by spline coupling assembly error...
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Article
How do Multi-Scale Virtual Water Flows of Large River Economic Belts Impact Regional Water Distribution: Based on a Nested Input-Output Model
As key water suppliers and natural channels, large rivers have prospered production and trade. However, the emerging trade brought virtual water flows, which will change the physical water distribution. Accord...
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Article
Energy Evolution of Anthracite Considering Anisotropy Under High Confining Pressure: An Experimental Investigation
The investigation of the energy evolution of coal under the coupling of the bedding plane and confining pressure is critical to engineering failure analysis. However, there are few anisotropic geo-mechanical s...
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Article
Investigation on Pore-fracture of Coal and Its Influence Mechanism on Uniaxial Compression Failure Behavior
Pore-fracture is an important component of coal, affecting the uniaxial compression failure behavior. However, it is difficult to effectively characterize the influence mechanism because of the complexity and ...
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Article
Effects of Anisotropy on Strength and Deformability of Anthracite Under High Confinement
Coal strength and deformability anisotropy are one of the important contents of deep rock mechanics, as well as a crucial aspect influencing the secure and efficient exploitation of deep coalbed methane. Howev...
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Article
Probabilistic Evaluation of Tunnel Boring Machine Penetration Rate Based on Case Analysis
Although geological parameters are known to affect the penetration rate (PR) of a tunnel boring machine (TBM), their relation to the probability of TBM PR has been rarely considered. In this article, a probabi...
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Article
Pore Size Distributions and Multi-Fractal Characteristics of the Intact and Pulverized Coal in High Gas Mine
The pore structure and microfracture evolution characteristics of coal in high gas mine are worthy of studying to make clear the mechanism of coal and gas outburst. Samples were collected from 2# coal seam (hi...
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Article
Damage Evolution Equation Reflecting Hydrostatic Pressure Effect and Its Application to Concrete Slabs under Projectile Impact
In this study, triaxial cyclic loading and unloading compression tests were performed on concrete specimens under six confining pressures (0, 5, 10, 20, 30, and 40 MPa). The elastic modulus was reduced to char...
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Article
Assessment of landslide susceptibility and risk factors in China
Landslides represent some of the most important geological disasters and not only pose a threat to human beings but also have a serious destructive impact on the environment and property. Delimiting the potent...
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Article
Effect of Free Water on the Mechanical Properties and Blast Resistance of Concrete
This study investigates the effect of free water on the mechanical properties and blast resistance of concrete. For this purpose, comparative experiments on saturated and normal concretes subjected to quasi-st...
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Article
Study on stability of exit slope of Chenjiapo tunnel under extreme rainstorm conditions
The exit slope of the Chenjiapo tunnel is located in Xuanen County, Hubei Province, China, and rainfall is one of the main factors inducing landslides. During the tunnel excavation, the left side of the front ...
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Article
Optimization of smoke exhaust efficiency under a lateral central exhaust ventilation mode in an extra-wide immersed tunnel
This study focused on increasing the efficiency of the smoke exhaust system of an extra-wide (eight-lane, dual-directional) immersed tunnel with a specific quantity of exhaust. The Shenzhen-Zhongshan immersed ...
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Article
Investigation of Fault Displacement Evolution During Extraction in Longwall Panel in an Underground Coal Mine
A physical simulation model is constructed to study the characteristics of fault displacement evolution at Yima mining area, Henan Province, China. The geological condition at Yima mining area is complicated w...
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Article
Field Investigation of a Roof Fall Accident and Large Roadway Deformation Under Geologically Complex Conditions in an Underground Coal Mine
An investigation was undertaken to study the characteristics of large roadway deformation and driving force of roof fall in a geologically complex zone at Huangyanhui underground coal mine, Shanxi Province, Ch...
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Article
Investigation of Intrinsic and External Factors Contributing to the Occurrence of Coal Bumps in the Mining Area of Western Bei**g, China
An investigation has been made to relate the occurrence of coal bumps to specific geological and mining conditions to the mining area of western Bei**g. This investigation demonstrates that the high frequency...
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Article
One-Dimensional Finite Element Method Solution of a Class of Integro-Differential Equations: Application to Non-Fickian Transport in Disordered Media
We study an integro-differential equation that has important applications to problems of anomalous transport in highly disordered media. In one application, the equation is the continuum limit of a continuous ...
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Article
Dynamic Tensile Strength of Coal under Dry and Saturated Conditions
The tensile failure characterization of dry and saturated coals under different impact loading conditions was experimentally investigated using a Split Hopkinson pressure bar. Indirect dynamic Brazilian disc t...
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Article
The role of flaws on crack growth in rock-like material assessed by AE technique
Experiments for the rectangular rock-like samples (made of high-strength gypsum and water–cement ratio is 1) with two parallel pre-existing flaws subjected to uniaxial compression were carried out to further i...
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Article
Dynamic monitoring of drought using HJ-1 and MODIS time series data in northern China
From early November 2008 to February 2009, lack of rainfall led to severe drought in northern China. More than 9.3 million ha of wheat in six major crop production provinces, including Henan, Anhui, Shandong, ...
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Article
Numerical Investigation of the Dynamic Mechanical State of a Coal Pillar During Longwall Mining Panel Extraction
This study presents a numerical investigation on the dynamic mechanical state of a coal pillar and the assessment of the coal bump risk during extraction using the longwall mining method. The present research ...
