Coalbed methane emissions and drainage methods in underground mining for mining safety and environmental benefits: A review

Zheng, Chen; Jiang, Bingyou; Xue, Sheng; Chen, Zhongwei; Li, He

doi:10.1016/j.psep.2019.05.010

Cited by 160 publications

(68 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, dame sheets should be arranged outside the block wall and at the corner of the transportation roadway and the ventilation roadway of working face #10414. The anchor cable parts should be removed to fully cave the top coal at the corner of the roadway, reduce air leakage, and prevent heat accumulation (Figure ) …”

Section: Discussionmentioning

confidence: 99%

“…The anchor cable parts should be removed to fully cave the top coal at the corner of the roadway, reduce air leakage, and prevent heat accumulation ( Figure 9). [49][50][51][52][53][54] 6 | CONCLUSIONS In this paper, for the situation where the roof caving strength in a deep coal seam mine is relatively high, we analyze the relationship between the LDRC and CSC in the gob. In addition, we present a calculation model for CSC based on porosity and use working face #10414 in the Yangliu coal mine as an example to verify the correctness of the ASM.…”

Section: Suggestions For Fire Prevention and Extinguishing In The Minementioning

confidence: 99%

See 1 more Smart Citation

Study of the influence of the characteristics of loose residual coal on the spontaneous combustion of coal gob

Shu

et al. 2019

Energy Science & Engineering

View full text Add to dashboard Cite

Mine fires are becoming a serious issue as the intensity of mining increases, especially in deep mines. Loose coal gob has a hidden ignition location and a high possibility of spontaneous combustion, which makes fire prevention difficult. Therefore, based on the theory of gas seepage and the characteristics of loose coal, a model of air leakage and spontaneous combustion in gob is established in this paper. Using working face #10414 in the Yangliu coal mine as an example, the relationship between the three spontaneous coal combustion (CSC) zones and the three stress zones is analyzed and verified by combining a FLAC3D simulation with field monitoring. In addition, the influence of advancing speed on the CSC is discussed, and suggestions for fire prevention are presented. The results show that the variation in the calorific value of the CSC with increasing degree of looseness of the residual coal in the gob forms an arch‐shape. There is a one‐to‐one relationship between the distribution of the three stress zones and the three CSC zones. In addition, as the advancing speed increases, the contact time between the loose coal body and the air decreases and the possibility of CSC decreases. This study provides a scientific basis for fire prevention and control in mines.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Suggestions For Fire Prevention and Extinguishing In The Minementioning

confidence: 99%

Study of the influence of the characteristics of loose residual coal on the spontaneous combustion of coal gob

Shu

et al. 2019

Energy Science & Engineering

View full text Add to dashboard Cite

show abstract

“…The degasification of strata is categorized as pre-drainage or post-drainage methods in relation to coal extraction. These methods can be divided into surface-to-mine boreholes or in-mine boreholes [48]. The Polish mining industry uses only underground post-drainage methods using in-mine boreholes to the relaxed strata, usually during and rare after coal extraction.…”

Section: Longwall Methane Drainagementioning

confidence: 99%

Enhancing Safety in the Polish High-Methane Coal Mines: an Overview

Szlązak

Obracaj

Swolkień

2020

Mining, Metallurgy & Exploration

View full text Add to dashboard Cite

Polish coal mines are characterized by severe geological conditions and the co-occurrence of natural hazards. These hazards are associated with methane and dust emissions during mining processes which can provide methane, dust or methane-dust explosions. Besides, there are such natural hazards as gas and rock outbursts, rock bursts, spontaneous combustion of coal and environmental heat load. The mutual influences of various geological conditions, as well as the natural hazards, intensify the increase of the methane explosion hazard. The occurrence of methane explosions in the Polish mining industry between 2013 and 2108 are analyzed. Fatal accidents are compared with similar events in the global mining industry. The methods of preventing the explosion hazard as well as methane emission control in the Polish coal mining sector are presented. Methane hazard prevention should be adapted to levels and other natural hazards, especially those related to ventilation of underground mine. The methods of preventing methane emissions into mine excavations are often contrary to the means of preventing other ventilation-related hazards in the underground mine, e.g. the prevention of spontaneous combustion of coal in the goaf of longwall panel. Therefore, the design of longwall panels should be preceded by a detailed analysis of the results of both methane emission prediction and forecast of other ventilation-related hazards.

show abstract

“…Coal mine gas disasters have always been a major problem for safe production of coal (Yuan 2016;Zhou et al 2019; Wang and Du 2020). But at the same time, gas can also be used as a clean energy source (Tao et al 2019;Zheng et al 2019). Although extraction of gas can reduce the occurrence of underground gas disasters, exhaustion of a large amount of gas will lead to air pollution and aggravate greenhouse effects.…”

Section: Introductionmentioning

confidence: 99%

A “Full Spectrum-Domain-Time” Coalbed Gas Utilization Model and Its Application in Mining area

Linghu

Chen

Zhou³

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: As an important energy source, coalbed gas (CBG) has been widely used. However, the allocation system of CBG resources is not perfect. During the utilization process, a large amount of CBG is discharged into the air, causing environmental pollutionMethods: In this study, we proposed a “full spectrum-domain-time” CBG utilization model, including full spectrum CBG utilization technology and full domain CBG supply, In addition, based on time series algorithms, real-time prediction of the demand for CBG, grasp the characteristics of time changes in demand, and scientifically allocate resources, that is, “full-time” regulation. Taking Yangquan Coal Group, Shanxi Province, China, as a case study, introduced the application of the “full spectrum-domain-time” utilization model in the enterprise, and at last assessed the achievement of the model application. Results and Conclusions: The time series algorithm can be used to predict CBG demand in different regions of the mining area. Driven by this model, both the total CBG and low-concentration CBG utilizations in the Yangquan Coal Group increase year after year, making it promising to reach 77.15% of CBG utilization rate and indicating that application of the model has made great accomplishment.

show abstract

Coalbed methane emissions and drainage methods in underground mining for mining safety and environmental benefits: A review

Cited by 160 publications

References 90 publications

Study of the influence of the characteristics of loose residual coal on the spontaneous combustion of coal gob

Study of the influence of the characteristics of loose residual coal on the spontaneous combustion of coal gob

Enhancing Safety in the Polish High-Methane Coal Mines: an Overview

A “Full Spectrum-Domain-Time” Coalbed Gas Utilization Model and Its Application in Mining area

Contact Info

Product

Resources

About