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Additionally, by integrating backward diagnosis with sensitivity analysis, our approach simplifies the identification of key risk factors, offering valuable insights for improving outburst prevention measures and ensuring the safety of coal mining activities.
Table 3 Types of outburst mines and outburst prevention measures. Full size table. With the use of this equation, we can quickly and accurately determine whether a given coal seam is an outburst ...
The purpose of outburst and explosion studies in the early 1970s was to forecast and prevent coal mine hazards. However, because coal seam gas (CBM) is now viewed as a commercial energy source, increasing attention is being paid to study the development of CBM. ... offering valuable insights for improving outburst prevention …
Local comprehensive outburst-prevention measures include prediction of working face outburst danger, working face outburst prevention measures, validation check, and …
Mining activity destroys the stress balance of the original rock, causing the redistribution of stress inside the rock mass, thus forming a stress concentration zone. 34, 35 When the working face of the …
Among the errors, the lack of strict enforcement of outburst prevention measures, illegal command, and the illegal operation of miners are the main unsafe acts.
The hazard of coal and gas outburst underground is extremely high, with complex influencing factors and uncertain risk categorization. In this case, the traditional regional outburst prediction methods fail to fulfill the demands of spatial risk quantitative distribution, complicating the implementation of targeted regional outburst prevention …
This ensures that regional outburst prevention measures meet mining standards before mining begins. Uncovering coal area: When the cross-cut uncovers the coal seam in the coal uncovering area, cross-layer drilling must be used to prevent regional outbursts. This should continue until the outburst risk in the uncovered coal area is …
As one of the dynamic disasters of coal mines, rockburst seriously affects underground safe coal mining. Based on the laboratory test, field test, and theoretical analysis, this study proposed the principle of the rock burst induced by the combination of dynamic and static stresses and divided such rock burst into three types, including …
In the process of green and smart mine construction under the context of carbon neutrality, China's coal safety situation has been continuously improved in recent years. In order to recognize the development of coal production in China and prepare for future monitoring and prevention of safety incidents, this study mainly elaborated on the …
One of the significant aspects of formulating the principal concerning outburst prevention measures in deep mining, is the dynamic failure process of coal in the outburst procedure. Hence, in order to qualitatively and quantitatively analyze, this paper applied the ANASYS/LS-DYNA program, combined with the HJC dynamic …
Rockburst, coal bump, and mine earthquake are the most important dynamic disaster phenomena in deep mining. This paper summarizes the differences and connections between rockburst, coal bumps and mine earthquakes in terms of definition, mechanism, phenomenon, evaluation index, etc. The definition and evolution progress …
outburst-prevention measures include four integrated parts, prediction of the regional outburst danger, regional outburst prevention measures, validation of the ... enterprises to manage outburst mine actively, plan production activity reasonably and utilize new technologies and equipments eagerly. Keywords: ...
PDF | On Jul 9, 2019, Jufeng Zhang and others published Study on Optimum Design of Outburst Prevention Measures in Weijiadi Coal Mine | Find, read and cite all the research you need on ResearchGate
The regional prevention measures for controlling coal and gas outburst mainly include mining the protective coal seam and pre-pumping the coal seam gas; local measures to prevent outbursts mainly include advance boreholes, loose blasting, hydraulic cutting, hydraulic flushing in hole, hydrofracture and coal seam infusion (Yang et al., 2016).
For mines bearing multiple coal seams, protective seam mining is the most cost-effective gas control measure, and the selection of suitable coal seam as the first mining coal seam is crucial for successful implementation of this extraction method. 41 If the first mining coal seam is a nonoutburst seam, a laneway can be directly developed …
Based on the analysis of 90 outburst occurrences in Donbas and Vorkuta coal basins (former USSR) the criterion proposed by Feit related the change of gas internal energy with the stress, bulk ...
Therefore, protective layer mining, an effective measure for outburst prevention, has been widely adopted in China under different geological conditions, including different interlayer distances ...
In the coal mining process, five types of natural hazards are commonly encountered: water, fire, gas outbursts, dust, and roof falls, which are collectively referred to as the "five major ...
outburst prevention measure of the mine is pre-draining coa l seam gas. (1) Layout of drilling holes for driving face . According to the development layout of the second w ell in Liziya South, ...
practice in outburst mine GAO Hong1 1School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001; China; ... First regional outburst prevention measures in East Wing of panel 1 The 3108 working face of panel of Xiaoxi Coal Industry Co., Ltd. is the first mining face in the east wing ...
To improve the coal permeability and outburst prevention, coal seam water injection and a series of outburst prevention measures were tested in outburst coal mines. These methods have become important technologies used for coal and gas outburst prevention and control by increasing the external moist …
pressure in the outburst mine is integrated, there is an urgent need to enhance the mine's ability to prevent coal and gas outburst disasters and improve the safety management level for Xinjing Company to, so as to promote the application of experience to other outburst mines of Yangquan Coal Group. 2 Research on early warning index
The conclusion of this research will facilitate coal miners to compose and arrange outburst prevention measures more rationally, thus ameliorating the …
The fundamental compositions of principles concerning outburst prevention measure under deep mining conditions. In accordance with the distribution features of the coal seam stress field in section 2.3 and the numerical simulation in section 3.3, it was conspicuous that the coal in the stress-concentrate zone first displayed the failure …
Interests: coal mine gas drainage; coal mine gas dynamic disaster prevention; methane recovery from microporous organic rocks; CO 2 geological …
Aiming at the problem of coal and gas outburst prevention and control in serious outburst dangerous coal seam under complex geological conditions in Qidong Coal Mine, the water jet drilling and ...
Share. Abstract. Coal and gas outburst is one of the most harmful natural disaster in coal mine production. The frequency and scope of outburst are closely related to the metamorphic degree of coal seam, …
The outburst risk gradually transforms from a single dynamic disaster to a compound dynamic disaster. 5, 6 Specifically, under the mutual induction and interaction of outburst and rockburst, the rockburst‐outburst compound dynamic disasters gradually occur in deep mines, 7-10 the type of outburst disaster changes from an initial gas ...
Guanglong Coal Mine: Coal and gas outburst: 15: 57: 2020: Colombia: Norte de Santander: Accumulation of methane: 06: ... Fire retardants, inhibitors and extinguishing agent are currently used for explosion prevention measures and it needs to be implemented in mines to avoid fire and explosion.