Numerical simulation study on mine discharge of Xiyu coal mine in Taiyuan

2011 ◽  
Author(s):  
Zhixiang Zhang ◽  
Yongbo Zhang ◽  
Zhihuai Zhao ◽  
Jiajia Yue
Keyword(s):  
Numerical Simulation ◽  
Simulation Study ◽  
Coal Mine ◽  
Mine Discharge

Numerical simulation study on hard-thick roof inducing rock burst in coal mine

2016 ◽  
Vol 23 (9) ◽  
pp. 2314-2320 ◽  
Author(s):  
Jiang He ◽  
Lin-ming Dou ◽  
Zong-long Mu ◽  
An-ye Cao ◽  
Si-yuan Gong
Keyword(s):  
Numerical Simulation ◽  
Rock Burst ◽  
Simulation Study ◽  
Coal Mine

Numerical Simulation Study on Combined Supporting Scheme of Bolts and Anchor Cable

2014 ◽  
Vol 638-640 ◽  
pp. 898-903
Author(s):  
Wen Cai Wang ◽  
Wen Bin Wei ◽  
Ling Wang
Keyword(s):  
Numerical Simulation ◽  
Simulation Study ◽  
Coal Mine ◽  
Simulation Software ◽  
Practical Application ◽  
Anchor Cable ◽  
Result Show ◽  
The Face

Aiming at the face roadway 22109 of Cuncaota coal mine, using FLAC3Dnumerical simulation software, 19 of 5 groups about bolt and anchor combined support schemes were analysed and compared, and the reasonable scheme of φ18×2000mm thread steel bolt and φ17.8×6500mm anchor cable combined support was obtained. Support result of this scheme was analysed with FLAC3Dsoftware, the result show that this scheme can support the roadway effectively. Practical application show that this scheme can achieve the security, economical and effective support result, and can be used in this type of roadway.

NUMERICAL SIMULATION STUDY ON BIONIC MUCUS DRAG REDUCTION OF UNDERWATER VEHICLE

2020 ◽  
Vol 47 (4) ◽  
pp. 371-385
Author(s):  
Kaisheng Zhang ◽  
Chaofan Ma ◽  
Baocheng Zhang ◽  
Bo Zhao ◽  
Qiang Wang
Keyword(s):  
Numerical Simulation ◽  
Drag Reduction ◽  
Simulation Study ◽  
Underwater Vehicle

Effect Analysis of Nitrogen Injection on the Variation of “Oxidation Zone” in Coal Mine Gob Based on Numerical Simulation

2016 ◽  
Vol 9 (1) ◽  
pp. 47-54
Author(s):  
Jing Shen ◽  
Mingran Chang
Keyword(s):  
Numerical Simulation ◽  
Coal Mine ◽  
Heat Dissipation ◽  
Spontaneous Combustion ◽  
Oxidation Zone ◽  
Effect Analysis ◽  
Mine Fire ◽  
Nitrogen Injection ◽  
The Difference ◽  
Residual Coal

One of the main reasons for coal mine fire is spontaneous combustion of residual coal in gob. As the difference of compaction degree of coal and rock, the underground gob can be considered as a porous medium and divided into “three zones” in accordance with the criteria. The “three zones” are “heat dissipation zone”, “oxidation zone” and “choking zone”, respectively. Temperature programming experiments are taken and numerical simulation with obtained experimental data is utilized to analyze the distribution of “three zones” in this paper. Different width and depth of “oxidation zone” are obtained when the inlet air velocity is changed. As the nitrogen injection has inhibition effect on spontaneous combustion of residual coal in gob, nitrogen is injected into the gob. The widths of “oxidation zone” are compared before and after nitrogen injection. And ultimately the optimum location and volume of nitrogen injection are found out.

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