The Research and Application of FLAC3D in Optimization of Roadway Support

2014 ◽  
Vol 1010-1012 ◽  
pp. 1568-1573
Author(s):  
Hai Feng Du
Keyword(s):  
Numerical Simulation ◽  
Coal Mine ◽  
Basic Process ◽  
Simulation Research ◽  
Numerical Simulation Result ◽  
Mine Roadway ◽  
Roadway Support

This article describes the basic process of numerical simulation, and an example of Xinyu coal mine roadway numerical simulation research. And the support scheme is proposed by the numerical simulation result.

Numerical Simulation Analysis of Different Coal Mine Roadway Support Effect

2013 ◽  
Vol 807-809 ◽  
pp. 2356-2360 ◽  
Author(s):  
Guang Yi Sun ◽  
Xiao Luo
Keyword(s):  
Numerical Simulation ◽  
Coal Mine ◽  
Simulation Analysis ◽  
Support Effect ◽  
Surrounding Rock ◽  
Anchor Cable ◽  
Mine Roadway ◽  
Coal Wall ◽  
Roadway Support

The application of FLAC2D software long ditch coal mine extraction tunnel without support boltgrouting. Anchor when the anchor rope supporting and strengthening supporting state ofroadwaywere simulated and analyzed the change of roadway surrounding rock under differentsupport forms. Demonstrated the possibility that the current anchor cable anchor supporting andanalysis under the condition of the coal wall broken grouting bolt is the necessity of reinforcement.

Rock Bolting Numerical Simulation Research and Application of the Face Breakthough

2011 ◽  
Vol 105-107 ◽  
pp. 2239-2243
Author(s):  
You Lin Xu ◽  
Hui Zhang ◽  
Wei Zheng
Keyword(s):  
Numerical Simulation ◽  
Coal Mine ◽  
Rock Strength ◽  
Test Methods ◽  
Strength Test ◽  
Simulation Research ◽  
Rock Bolting ◽  
Mine Roadway ◽  
The Face ◽  
Coal Rock

This paper analyzes the importance of rock bolting in coal mining, and the difficult of using rock bolting in breakthough with the affect of mining, adopt hydraulic fracturing and coal-rock mass strength test methods to test the seam stress and rock strength. Make the numerical simulation of break though bolting solutions in coal mine roadway by using FLAC3D software, simulate the different distributions of pre-stressed in coal-rock with three situations, the same raw distance but different space, the same space but different raw distance, impose different preload on the roof anchor in the rock bolting of mine roadway breakthough. Then determine a reasonable bolting solution of coal mine roadway according to the case of prestressed in coal-rock.

Study on Numerical Simulation of Secondary Dust Deposition Phenomenon

2013 ◽  
Vol 423-426 ◽  
pp. 2957-2962 ◽  
Author(s):  
Bicao Can Ling ◽  
Hai Yang Ju ◽  
Zheng Ye
Keyword(s):  
Numerical Simulation ◽  
Coal Mine ◽  
Concentration Distribution ◽  
Specific Area ◽  
Dust Particles ◽  
Dust Deposition ◽  
Simulation Research ◽  
Model Research ◽  
Mine Roadway ◽  
Different Diameters

At present, study of coal mine dust mainly focuses on the specific area of concentration distribution of particles of different diameters, and the trajectory of the research, especially the numerical simulation research is rarely involved, this paper applies the method of numerical simulation, and the establishment of dust particles starting mathematical model, research dust in coal mine roadway within the two flying of dust flying, aiming at the two problems, putting forward reasonable and effective methods to prevent the harm caused by secondary dust flying.

Numerical Simulation Research on Deep Soft Rock Roadway

2012 ◽  
Vol 256-259 ◽  
pp. 1439-1442
Author(s):  
Bin Zhang ◽  
Xiang Lian Yu ◽  
Ning Liu ◽  
Feng Zhu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Soft Rock ◽  
Simulation Software ◽  
Simulation Research ◽  
Finite Element Software ◽  
Support Measure ◽  
Roadway Support ◽  
Soft Rock Roadway ◽  
Rock Roadway

The soft rock roadway support is one of difficult problems in the mineral engineering. For making the stress and strains of support system to be effective forecasted in the process of roadway support. The Adina finite element software is used to do numerical simulation about the strains of the supports system in the process of the Hama mountain roadway, and compare with the date which was got from the field monitoring. The date comparison shows that the results of simulation is basic anastomotic with the examination at present. So that it can be well predicted the effectiveness of the support measure when using the finite element simulation software –Adina.

scholarly journals Numerical Study of TBM Excavated Coal Mine Roadway Support Design

2020 ◽  
Vol 446 ◽  
pp. 052011
Author(s):  
Bin Tang ◽  
Zhenhua Wang ◽  
Yongzhi Tang ◽  
Chuanbin Wang ◽  
Yanqing Li ◽  
...  
Keyword(s):  
Coal Mine ◽  
Numerical Study ◽  
Support Design ◽  
Mine Roadway ◽  
Roadway Support

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.

scholarly journals Numerical Simulation Research on Multi-field Coupling of Underground Energy Pile

2021 ◽  
Vol 1838 (1) ◽  
pp. 012061
Author(s):  
Qihui Zhou ◽  
Zhanjun Huang ◽  
Yong Wu ◽  
Huipeng Zhang ◽  
Yufeng Shi ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Simulation Research ◽  
Energy Pile ◽  
Field Coupling

Reasonable Entry Layout of Lower Seam in Multi-Seam Mining Based on Numerical Simulation

2013 ◽  
Vol 295-298 ◽  
pp. 2980-2984
Author(s):  
Xiang Qian Wang ◽  
Da Fa Yin ◽  
Zhao Ning Gao ◽  
Qi Feng Zhao
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Coal Seam ◽  
Coal Mine ◽  
Abutment Pressure ◽  
Surrounding Rock ◽  
Geological Conditions ◽  
Seam Mining

Based on the geological conditions of 6# coal seam and 8# coal seam in Xieqiao Coal Mine, to determine reasonable entry layout of lower seam in multi-seam mining, alternate internal entry layout, alternate exterior entry layout and overlapping entry layout were put forward and simulated by FLAC3D. Then stress distribution and displacement characteristics of surrounding rock were analyzed in the three ways of entry layout, leading to the conclusion that alternate internal entry layout is a better choice for multi-seam mining, for which makes the entry located in stress reduce zone and reduces the influence of abutment pressure of upper coal seam mining to a certain extent,. And the mining practice of Xieqiao Coal Mine tested the results, which will offer a beneficial reference for entry layout with similar geological conditions in multi-seam mining.

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