Xiaoran Wang
China University of Mining and Technology
Coal miningGeologyBrittlenessDeformation (engineering)Electromagnetic radiationComposite materialMining engineeringAcoustic emissionAmplitudeGeotechnical engineeringField (physics)Materials scienceDeformation (meteorology)InstabilityEnvironmental scienceFracture (geology)Elastic modulusGreenhouse gasCoalMechanicsFracture mechanicsPetroleum engineeringUltrasonic sensorStress (mechanics)
19Publications
8H-index
258Citations
Publications 19
Newest
Abstract null null Three-point bending experiments were performed to observe mode-I fracture in a series of geometrically similar, center-notched rectangular beams composed of Sioux quartzite, a stiff, hard rock with flexural tensile strength σt = 32 MPa. Acoustic emission (AE) were recorded and microcrack locations were determined to track crack growth. Digital image correlation (DIC) was used to augment the acoustic emission data. Detailed observations indicate that (i) subsize specimens of Si...
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#1Xiaoran Wang (CUMT: China University of Mining and Technology)H-Index: 8
#2Enyuan Wang (CUMT: China University of Mining and Technology)H-Index: 35
Last. Xin Zhou (CUMT: China University of Mining and Technology)
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Abstract Mechanical and associated temporal-spatial microcracking behaviors of fractured sandstones, a hard and stiff rock, were tested and observed under different uniaxial loading rates with the aid of acoustic emission (AE) monitoring. Based on the principle of microcracking nucleation and multiple locked-patches failure theory borrowed from seismology, some experimental phenomena during crack propagation process, AE generated mechanisms as well as the static loading rate effects of loaded fr...
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#1Xiaofei Liu (CUMT: China University of Mining and Technology)H-Index: 7
#2Zhibo Zhang (USTB: University of Science and Technology Beijing)H-Index: 1
Last. Hao Wang (CUMT: China University of Mining and Technology)H-Index: 3
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Rockburst is a serious threat to the safety and efficiency of coal-mine production in China. Accurate monitoring and prediction of rockburst is an ongoing challenge in coal mining. Electromagnetic radiation (EMR) technology is a real-time and non-contact prediction method for changes in the mechanical parameters of coal or rock. In this paper, uniaxial compression testing of coal and rock samples was carried out, EMR data were collected and analysed from deformation to failure. The rescaled rang...
4 CitationsSource
#1Hao Wang (CUMT: China University of Mining and Technology)H-Index: 3
#2Wang Enyuan (CUMT: China University of Mining and Technology)H-Index: 7
Last. Qiming Zhang (CUMT: China University of Mining and Technology)H-Index: 5
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A large amount of gas, which will do great damage to the environment as a kind of greenhouse gas, is discharged directly into the air in the process of coal mining in China. Majority of coal mines in China are characterized by low permeability, great gas pressure, and low strength feature. These features make it difficult for the extraction of gas, which increases the risk of coal and gas outbursts. In order to improve the permeability of coal seam, hydraulic flushing (HF) technology is adopted....
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#1Hao Wang (CUMT: China University of Mining and Technology)H-Index: 3
#2Enyuan Wang (CUMT: China University of Mining and Technology)H-Index: 35
Last. Muhammad Ali (CUMT: China University of Mining and Technology)H-Index: 17
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Abstract The low gas extraction concentration is one of the main factors that affect the prevention and control effect of coal and gas outburst. Based on this, the factors of air leakage around the roadway and borehole are analyzed. The effect of extraction time, seal length and air leakage on the gas concentration is discussed by the fluid-solid coupling model, which is proved by the borehole environmental parameter instrument.The research findings show :(1) Influenced by roadway excavation and...
5 CitationsSource
#1Xiaofei LiuH-Index: 3
#1Xiaofei LiuH-Index: 1
Last. Weikai LuH-Index: 1
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6 CitationsSource
#1Haishan Jia (CUMT: China University of Mining and Technology)H-Index: 6
#2Enyuan Wang (CUMT: China University of Mining and Technology)H-Index: 35
Last. Muhammad AliH-Index: 17
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Abstract Elastic wave velocity is a critical parameter in evaluating rock stability and integrity. Temporal changes in wave velocity during mine dynamic hazards including rockburst and gas outburst might potentially illuminate physical processes associated with stress concentration, crack propagation and fault slip behaviors. Laboratory and theoretical studies predict changes in wave velocity before rock failure; however, these dynamic hazards occur in a range of modes and little is known about ...
8 CitationsSource
#1Dexing Li (CUMT: China University of Mining and Technology)H-Index: 9
#2Enyuan Wang (CUMT: China University of Mining and Technology)H-Index: 35
Last. Muhammad Ali (Balochistan University of Information Technology, Engineering and Management Sciences)H-Index: 7
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7 CitationsSource
#1Xiaofei Liu (CUMT: China University of Mining and Technology)H-Index: 7
#2Shuai Yang (CUMT: China University of Mining and Technology)H-Index: 2
Last. Bin Zhou (TUT: Taiyuan University of Technology)H-Index: 1
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Aiming at the large deformation and the dynamic fracture of roadway during the underground excavation or mining, a physical simulation and strain testing system was established, and the deformation process of surrounding body and its inner strain characteristics of the simulated roadway under loading was carried out. Results showed that the inner strain change of the measurement points can be divided into three types: the strain firstly increases and then decreases, the strain slowly increases a...
6 CitationsSource
#1Zhibo Zhang (CUMT: China University of Mining and Technology)H-Index: 5
#2Enyuan Wang (CUMT: China University of Mining and Technology)H-Index: 35
Last. Zhonghui Li (CUMT: China University of Mining and Technology)H-Index: 15
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Abstract In this paper, the acoustic emission (AE) response of coal samples under cyclic loading is measured. The results show that there is good positive relation between AE parameters and stress. The AE signal of coal samples under cyclic loading exhibits an obvious Kaiser Effect. The single-link cluster (SLC) method is applied to analyze the spatial evolution characteristics of AE events and the damage evolution process of coal samples. It is found that a subset scale of the SLC structure bec...
14 CitationsSource