全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:... Weimin Cheng , Lin Xin , Guanhua Ni
来源:[J].Arabian Journal of Geosciences(IF 0.74), 2017, Vol.10 (16)Springer
摘要:Coal and gas outburst disasters in coal seams are becoming more serious as coal mines extend deeper underground in China. Furthermore, the protective coal seam mining technology featured by economic efficiency has been proven to be the most effective and widely applied metho...
作者:Guanhua Ni , Quangui Li
来源:[J].Arabian Journal for Science and Engineering, 2017, Vol.42 (9), pp.3839-3847Springer
摘要:In this paper, a series of experiments were conducted to reveal differences in pore connectivity between different ranks of coal, as well as their variations under the coupled effects of water and heat. The results demonstrated that the pore connectivity of coal undergoes three s...
作者:Guanhua Ni , Zhao Li , Hongchao Xie
来源:[J].Powder Technology(IF 2.024), 2018, Vol.323, pp.60-68Elsevier
摘要:Abstract(#br)In order to study the mechanism and relief method of coal seam water blocking effect (WBE) to improve the efficiency of gas drainage, the causes and the influencing factors of the coal seam WBE are analyzed, and the critical micelle concentration (CMC), surface tensi...
作者:... Qi Zhang , Ruonan Bai , Guanhua Ni
来源:[J].Minerals, 2016, Vol.6 (3)DOAJ
摘要:This paper used the X-ray three-dimensional (3D) microscope and acquired, through CT scanning, the 3D data of the long-frame coal sample from the Daliuta Coal Mine. Then, the 3D datacube reconstructed from the coal’s CT scanning data was visualized with the use of Avizo, an ...
作者:... Wei Liu , Jie Chen , Guanhua Ni
来源:[J].Results in Physics, 2019, Vol.12, pp.2107-2111Elsevier
摘要:Abstract(#br)In-situ stress estimation is of great significance in deep coal mining. The vertical stress of the underground rock mass is generally estimated by the product of the upper cover average specific gravity and its depth, and it is difficult to estimate the horizontal st...
作者:Guanhua Ni , Baiquan Lin ...
来源:[J].International Journal of Mining Science and Technology, 2014, Vol.24 (5), pp.631-636Elsevier
摘要:Abstract(#br)In order to understand the kinetic characteristics of coal gas desorption based on the pulsating injection (PI), the research experimentally studied the kinetic process of methane desorption in terms of the PI and hydrostatic injection (HI). The results show tha...
作者:... Cheng Zhai , Guanhua Ni , Ziwen Li
来源:[J].International Journal of Mining Science and Technology, 2012, Vol.22 (6), pp.821-824Elsevier
摘要:Abstract(#br)Aiming at actual condition of poor effect of hole sealing for the reason of poor cement paste fluidity in the process of coal mine gas drainage, by adding a water reducing agent, cement paste for hole sealing was produced. The changes of initial distribution, weighte...
作者:Guanhua Ni , Shen Peng ...
来源:[J].International Journal of Mining Science and Technology, 2013, Vol.23 (6), pp.847-853Elsevier
摘要:Abstract(#br)Variable frequency, a new pattern of pulse hydraulic fracturing, is presented for improving permeability in coal seam. A variable frequency pulse hydraulic fracturing testing system was built, the mould with triaxial loading was developed. Based on the monitor method...

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