Management of outburst in underground coal mines

Lama, R.D.; Bodziony, Jakub

doi:10.1016/s0166-5162(97)00037-2

Cited by 290 publications

(159 citation statements)

References 7 publications

Supporting

Mentioning

156

Contrasting

Order By: Relevance

“…With respect to the fault, different types offaults have significant differences in impact to outbursts. From Lamas research [3], normal faults in many mines have given rise to outbursts because they have a throw greater than the coal seam thickness, which resulted in complete stoppage of gas fiow. According to Li's research [44], faults can be divided into open, dosed and ocduded types.…”

Section: Geological Structuresmentioning

confidence: 99%

“…According to the gas outburst accident statistics in China, a high praportion of outburst incidents actually occurred near geological structures, which is because the tectonic stress playa key role in the gas migration and accumulation [3,14,50]. In the process of mining, the variation in mining-induced stresses will affect the opening or dosing of the pores and thereby indirectly impacting on the porosity and the permeability of coal.…”

Section: Stress Conditionsmentioning

confidence: 99%

“…RES introduced firstly by Hudson [3,53,54] is a powerful systematic approach to solve fully coupled prablems with all the elements, elements induding rock mechanics, engineering parameters, structures, constructions and their interactions. To date, it has already been used all over the world to address a number of engineering projects [55][56][57][58][59].…”

Section: Res and Interaction Matrixmentioning

confidence: 99%

“…Once an interaction matrix is established, there are several ways to code it [3], but the most common approach is still the conventional expert semi-quantitative (ESQ) approach. Io use the ESQ coding approach, first of aH, the off-diagonal terms of the interaction matrix should be assigned corresponding numerical coding values, and such coding values should describe the intensity of the influence of one parameter on the other parameter.…”

Section: Coding Approach Ofinteraction Matrixmentioning

confidence: 99%

“…Although in the past decades researchers have already noticed that outburst is a worldwide issue [3,4] and emphasised the importance of controlling and predicting outburst in mines [5][6][7][8][9], until now the precise mechanisms [10][11][12][13] of outburst are still unresolved and predicting techniques continue to be unreliable because most of their research perspectives are just based upon empirical or semi-empirical hypotheses [2,14].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Development of a quantitative assessment approach for the coal and gas outbursts in coal mines using rock engineering systems

Zhou

Herrera

Hidalgo

2017

International Journal of Mining, Reclamation and Environment

View full text Add to dashboard Cite

ABSTRAeTIn this study, a new approach is proposed and developed for evaluating the comprehensive outburst index (range between Oand 100), which is a quantitative assessment approach and will enable us to better understand the risk degree of coal and gas outburst in coal mines. By selecting some typical risk-free and high-risk outburst mines from China as the evaluation targets, we assessed their comprehensive outburst indexes with the developed approach. The assessment results are fully consistent with the actual situations, which indicates that our new developed approach is reliable and can be recommended for applying in more coal mines.

show abstract

Section: Geological Structuresmentioning

confidence: 99%

Section: Stress Conditionsmentioning

confidence: 99%

Section: Res and Interaction Matrixmentioning

confidence: 99%

Section: Coding Approach Ofinteraction Matrixmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Development of a quantitative assessment approach for the coal and gas outbursts in coal mines using rock engineering systems

Zhou

Herrera

Hidalgo

2017

International Journal of Mining, Reclamation and Environment

View full text Add to dashboard Cite

show abstract

Pore structure and fractal analysis of coal subjected to multiple treatments based on nuclear magnetic resonance

Yang

Zhao

Wang

et al. 2022

Energy Science & Engineering

View full text Add to dashboard Cite

Microwave heating (MW) and freeze fracturing (FF) have been widely used for enhancing the permeability of coal reservoirs. In this paper, the effects of combined MW-FF treatments on coals are experimentally investigated through nuclear magnetic resonance. T 2 distributions and fractal dimensions of coals under MW, FF, and the combined MW-FF treatments are compared and analyzed. The results show that the T 2 area, porosity, and fractal dimensions of coals increase to varying degrees after MW, FF, and MW-FF treatment. The T 2 spectrum peaks increase from 2 to 3 and macrofractures can be observed after the coal was treated with the combined MW-FF treatments.However, these phenomena are not observed under MW or FF treatment. The combined MW-FF treatments can effectively fracture coals with less microwave energy and less liquid nitrogen freezing cycle owing to its intensive thermal shock fracturing. Therefore, the combined MW-FF treatment is favorable for fracturing the coals and hence favorable for the CBM production.

show abstract

Study on stress evolution law of upper coal seam in long‐distance advance mining of lower coal seam

Fang

Sun

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

With the shift of coal resources to deep mining, the occurrence of longdistance coal seams has increased, and protective layer mining is facing new challenges. This paper attempts to explain the stress evolution law of the upper coal group in the long-distance mining of the lower coal group in Pingdingshan No. 8 Coal Mine. A simulation model of advance mining of lower-group coal long-distance was established. The stress evolution law of the upper coal seam under the influence of advanced mining disturbance of the lower coal seam is studied. The following conclusions were obtained: The advance mining of the lower coal group had a positive or negative impact on the stress distribution of the upper coal seam group. With the recovery of the lower coal group of the F-21030 working face, the overburden of the F-21030 goaf finally formed a "Y" type pressure relief area. The pressure relief effect of the E-21070 working face near the stopping line was obvious. The coal seam of Group E was divided into three areas affected by the advance mining of the lower coal seam. The maximum pressure relief value was 6.6% lower than the initial stress.According to the simulation results, the E-21070 working face was divided into three regions, namely, the pressure relief region, the stress increase region, and the original stress region. According to the field drainage results of pressure relief gas, the extraction curve could be divided into three parts, namely, the stable area, pressure relief area, and stress recovery area. The maximum pure gas drainage volume could reach seven to eight times of the original area. The pressure relief extraction effect was remarkable, and the optimal extraction range was 22-210 m behind the coal face of the group.

show abstract

Management of outburst in underground coal mines

Cited by 290 publications

References 7 publications

Development of a quantitative assessment approach for the coal and gas outbursts in coal mines using rock engineering systems

Development of a quantitative assessment approach for the coal and gas outbursts in coal mines using rock engineering systems

Pore structure and fractal analysis of coal subjected to multiple treatments based on nuclear magnetic resonance

Study on stress evolution law of upper coal seam in long‐distance advance mining of lower coal seam

Contact Info

Product

Resources

About