Search Results - "Cheng, Yuanping"

A sequential approach to control gas for the extraction of multi-gassy coal seams from traditional gas well drainage to mining-induced stress relief by Kong, Shengli, Cheng, Yuanping, Ren, Ting, Liu, Hongyong

“…As coal resources become exhausted in shallow mines, mining operations will inevitably progress from shallow depth to deep and gassy seams due to increased…”
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Influence of Coalification on the Pore Characteristics of Middle–High Rank Coal by Wang, Fei, Cheng, Yuanping, Lu, Shouqing, Jin, Kan, Zhao, Wei

“…The pore size distribution, pore shape and connectivity, and fractal characteristics are investigated to determine the pore characteristics of three different…”
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Methane and CO2 sorption hysteresis on coal: A critical review by Wang, Kai, Wang, Gongda, Ren, Ting, Cheng, Yuanping

“…Coalbed methane (CBM) recovery is a process of desorption rather than adsorption, and for CO2 sequestration, the sequestrated CO2 may desorb due to the…”
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Enhancement of gas drainage efficiency in a special thick coal seam through hydraulic flushing by Zhang, Rong, Cheng, Yuanping, Yuan, Liang, Zhou, Hongxing, Wang, Liang, Zhao, Wei

“…Coal seam gas is a kind of precious energy, but it also will be a terrible disaster in coal mining if not well controlled. Underground coal seam gas drainage…”
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Permeability distribution characteristics of protected coal seams during unloading of the coal body by Chen, Haidong, Cheng, Yuanping, Ren, Tingxiang, Zhou, Hongxing, Liu, Qingquan

“…Based on the engineering practices used in mining the protective coal seam at Huainan coalfield in China, this study investigates the temporal evolution of…”
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Experimental investigation on the formation and transport mechanism of outburst coal-gas flow: Implications for the role of gas desorption in the development stage of outburst by Jin, Kan, Cheng, Yuanping, Ren, Ting, Zhao, Wei, Tu, Qingyi, Dong, Jun, Wang, Zhenyang, Hu, Biao

“…As the one of the most catastrophic hazards in underground mining, coal and gas outburst seriously threatens the safe mining of collieries. To understand the…”
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Energy-limiting factor for coal and gas outburst occurrence in intact coal seam by Tu, Qingyi, Cheng, Yuanping, Xue, Sheng, Ren, Ting, Cheng, Xiang

“…This research reviewed the mechanics and gas desorption properties of intact coal, and tested the crushing work ratios of different intact coals, and then,…”
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The Energy Principle of Coal and Gas Outbursts: Experimentally Evaluating the Role of Gas Desorption by Lei, Yang, Cheng, Yuanping, Ren, Ting, Tu, Qingyi, Shu, Longyong, Li, Yixuan

“…Outburst energy is a major factor influencing coal and gas outbursts, albeit its estimation is difficult owing to the lack of amenable means for quantification…”
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Reservoir reconstruction technologies for coalbed methane recovery in deep and multiple seams by Wang, Liang, Liu, Shimin, Cheng, Yuanping, Yin, Guangzhi, Zhang, Dongming, Guo, Pinkun

“…Multiple coal seams widely develop in the deep Chinese coal-bearing strata. Ground in situ stress and coal seam gas pressure increase continuously with the…”
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Gas outburst disasters and the mining technology of key protective seam in coal seam group in the Huainan coalfield by Wang, Haifeng, Cheng, Yuanping, Yuan, Liang

“…Coal and gas outburst disasters in coal seams are becoming more serious as coal mines extend deeper underground in China. To aid gas control in high-gas…”
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A Novel In-Seam Borehole Discontinuous Hydraulic Flushing Technology in the Driving Face of Soft Coal Seams: Enhanced Gas Extraction Mechanism and Field Application by Zhang, Hao, Cheng, Yuanping, Deng, Cunbao, Shu, Longyong, Pan, Zhejun, Yuan, Liang, Wang, Liang, Liu, Qingquan

“…Soft coal seams are characterized by high gas content, high tectonic stress, low strength, and low permeability; thus, gas extraction from soft coal seams is…”
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Asynchronous difference in dynamic characteristics of adsorption swelling and mechanical compression of coal: Modeling and experiments by Zhao, Wei, Wang, Kai, Liu, Shimin, Ju, Yang, Zhou, Hongwei, Fan, Long, Yang, Yun, Cheng, Yuanping, Zhang, Xiaolei

“…Sorption-induced strain of coal is vital to the prediction of coal bed methane production and stimulation. Previous studies have addressed the relationship…”
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Influence of the injected water on gas outburst disasters in coal mine by Chen, Xiangjun, Cheng, Yuanping

“…The measurement of the injecting water into coal is commonly used to prevent and control methane disasters, which will increase moisture in the coal, and the…”
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Role of Tectonic Coal in Coal and Gas Outburst Behavior During Coal Mining by Tu, Qingyi, Cheng, Yuanping, Ren, Ting, Wang, Zhenyang, Lin, Jia, Lei, Yang

“…Coal and gas outbursts are small-scale geological disasters controlled by tectonic movement, and tectonic coal is widespread in outburst zones. In this study,…”
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New Insights into Failure Behaviors of Tectonic Coal Under Triaxial Conditions Using Reconstituted Coal Specimens by Lin, Jia, Cheng, Yuanping, Ren, Ting, Liu, Qingquan, Tu, Qingyi

“…Coal and gas outburst is tightly related to the existence of tectonic coal. Because large blocks of tectonic coals are difficult to be collected, reconstituted…”
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Powder Mass of Coal After Impact Crushing: A New Fractal-Theory-Based Index to Evaluate Rock Firmness by Wang, Chenghao, Cheng, Yuanping, Yi, Minghao, Lei, Yang, He, Xinxin

“…Firmness is one of the most important physical properties of rock, and indicates the rock’s ability to resist damage. It has considerable relevance to mining,…”
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A Mathematical Model of Coupled Gas Flow and Coal Deformation with Gas Diffusion and Klinkenberg Effects by Liu, Qingquan, Cheng, Yuanping, Zhou, Hongxing, Guo, Pinkun, An, Fenghua, Chen, Haidong

“…The influence of gas diffusion behavior on gas flow and permeability evolution in coal seams is evaluated in this paper. Coalbed methane (CBM) reservoirs…”
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Permeability enhancements of borehole outburst cavitation in outburst-prone coal seams by Zhou, Hongxing, Gao, Jin, Han, Ke, Cheng, Yuanping

“…Borehole outbursts eject coal power, create cavities and relieve in-situ stress while drilling cross-measure boreholes into outburst coal seams for…”
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Investigation of the formation mechanism of coal spallation through the cross-coupling relations of multiple physical processes by Tu, Qingyi, Cheng, Yuanping, Liu, Qingquan, Guo, Pinkun, Wang, Liang, Li, Wei, Jiang, Jingyu

“…Coal spallation is a visible product of outburst, and it represents a unique failure type for coal. A theoretical analysis of coal spallation was constructed…”
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Experimental Study of Coal and Gas Outbursts Related to Gas-Enriched Areas by Tu, Qingyi, Cheng, Yuanping, Guo, Pinkun, Jiang, Jingyu, Wang, Liang, Zhang, Rong

“…A coal and gas outburst can lead to a catastrophic failure in a coal mine. These outbursts usually occur where the distribution of coal seam gas is abnormal,…”
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