Simulation of Paleotectonic Stress Fields and Distribution Prediction of Tectonic Fractures at the Hudi Coal Mine, Qinshui Basin

2017 ◽  
Vol 91 (6) ◽  
pp. 2007-2023 ◽  
Author(s):  
Huihuang FANG ◽  
Shuxun SANG ◽  
Jilin WANG ◽  
Shiqi LIU ◽  
Wei JU
Keyword(s):  
Coal Mine ◽  
Stress Fields ◽  
Qinshui Basin

Structural control on pore-fracture characteristics of coals from Xinjing coal mine, northeastern Qinshui basin, China

2014 ◽  
Vol 8 (7) ◽  
pp. 4421-4431 ◽  
Author(s):  
Jiegang Liu ◽  
Bo Jiang ◽  
Ming Li ◽  
Zhenghui Qu ◽  
Linlin Wang ◽  
...  
Keyword(s):  
Coal Mine ◽  
Structural Control ◽  
Fracture Characteristics ◽  
Qinshui Basin

Study on Tunnel Seismic Detection Applied in Coal Mine

2014 ◽  
Vol 602-605 ◽  
pp. 1757-1760
Author(s):  
Yun Bing Hu ◽  
Yao Wang ◽  
Yan Qing Wu ◽  
Zi Xuan Liu ◽  
Peng Hui Xian
Keyword(s):  
Data Processing ◽  
Coal Mine ◽  
Seismic Data ◽  
Data Interpretation ◽  
Seismic Data Processing ◽  
Mine Field ◽  
Qinshui Basin ◽  
Hazard Detection ◽  
Seismic Detection

The idea of applying tunnel seismic advance exploration in coal mine geo-hazard detection is conducted in this paper. We successfully made a mine advance and side detection simultaneously with one-time shot seismic data by splitting the field seismic data using radon transformation, and we preceded mine seismic data processing and data interpretation was done to explain the phenomenon. We also introduce a case study in this paper which was carried out at Qinshui basin Yangmei No.5 mine field, and the detection results basically matched with out-crops, illustrating that our method can be one reference in mine geo-hazard detection.

scholarly journals Width Design of Small Coal Pillar of Gob-Side Entry Driving in Soft Rock Working Face and Its Application of Zaoquan Coal Mine

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Ai Chen
Keyword(s):  
Coal Mine ◽  
Coal Pillar ◽  
Soft Rock ◽  
External Stress ◽  
Stress Fields ◽  
Working Face ◽  
Roadway Stability ◽  
Calculation Results ◽  
Stress Zone ◽  
Internal Stress Field

Reasonable width of gob-side coal pillar can reduce the waste of coal resources and is conducive to roadway stability. According to the distribution of internal and external stress fields at the working face, a method for determining the width of gob-side coal pillar was proposed. The coal pillar and roadway should be set within the internal stress field, and support is provided through the anchored part and the intact part of the coal pillar. The method was used in the design of the coal pillar at No. 130205 working face of Zaoquan Coal Mine. The calculation results indicated that the width of a coal pillar suitable for gob-side entry is 6.0 m. It is reasonable to arrange the roadway and coal pillar in the low-stress zone with a width of 11 m. During tunnelling of roadway and stoping of the working face, the deformation of the roadway increased with a reduction in the distance from the working face. Even during stoping of the working face, there was an approximately 1.5 m intact zone in the coal pillar. This indicates that the proposed method of designing small coal pillar of gob-side entry driving is reliable.

scholarly journals Simulation of Biogenic Coalbed Gas from Anthracite in South of Qinshui Basin, China

2021 ◽  
Author(s):  
Aikuan Wang ◽  
qinghui wang ◽  
Pei Shao ◽  
Tian Fu ◽  
Moran Cao
Keyword(s):  
Coal Mine ◽  
Rapid Growth ◽  
Growth Stage ◽  
Simulation Experiment ◽  
Methanogenic Bacteria ◽  
Generation Process ◽  
Heavy Hydrocarbons ◽  
Qinshui Basin ◽  
Acetic Fermentation ◽  
Main Components

Abstract High rank coal, such as anthracite, has been considered difficult to generate biogas because of the high coalification degree. Selecting anthracite from Sihe coal mine, Qinshui basin, China, as substrate, this study carried out a simulation experiment of biogas generation for 80 days, the purpose of which was to verify whether anthracite could be bio-degraded to produce biogas under laboratory conditions. The results showed that the selected anthracite can be utilized by methanogenic bacteria to produce biogas and the approximate production field was 1.79mL/g, which was less than that of lower rank coal of other published studies. The generation process can be divided into a rapid growth stage (0-30d) and a slow descent stage (30-80d). CO2 and CH4 are the main components of biogas, although some heavy-hydrocarbons were also tested. The CO2 concentrations were low (<30%) and the δ13C-CH4 values were positive (-39.9‰ to -45.8‰), which suggested that the main biogas generation pathway was acetic fermentation. But at the same time, the concentrations of CH4 and CO2 were mutually increasing and decreasing with the passage of experiment time, and δ13C-CH4 tends to be lighten in the later stage(40-80d), suggesting that parts of biogenic CH4 was generated by way of CO2-reduction.

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