The triggering factors of coal and gas outburst disasters are complex and influenced by the coupling of gas, in situ stress, and mechanical properties of coal (Wang et al., 2022, Xue et al., 2020; Zhou et al., 2020a).At the early stage of mining, the basic parameters that are easy to test and directly related to the outburst risk are usually …
Coal and gas outbursts are a phenomenon whereby broken coal and gas suddenly erupt from the coal body into the mining space under pressure. The Diandong mining area is a group of close-range …
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 ...
According to the existing problems of the control measures of uncovering coal seams in rock crosscut, such as long time of uncovering coal, poor construction safety, etc., the main effect factors of coal–gas …
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.
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: ...
practice in outburst mine GAO Hong1 ... 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 ...
Interests: coal mine gas drainage; coal mine gas dynamic disaster prevention; methane recovery from microporous organic rocks; CO 2 geological …
Taking various outburst prevention measures and management is approach to identify, eliminate, control and restraint the first class danger source. Technical and management measure deficiencies lead to release of outburst energy belong to the in the second class danger source. ... At specific mine, the establishing need combine with …
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).
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.
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 ...
Local comprehensive outburst-prevention measures include prediction of working face outburst danger, working face outburst prevention measures, validation check, and …
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 conventional method is to adopt regional outbursts prevention measures of prepumping coal seam gas and mining protective layer, but this treatment method has certain requirements on coal seam …
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
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 …
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 …
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 …
The Xintian coal mine in Guizhou, China, is a coal and gas outburst mine adopting an inclined longwall comprehensive mechanized coal mining method. Before the accident, the No. 1404 tunneling face was driven into a complex geological tectonic belt without any improvement of the regional outburst prevention measures.
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 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 shown in Fig. 2, there are 286 outburst mines with a scale of 1439 million tons/year; 130 high-gas mines with a capacity of 43.19 million tons/year; 102 low-gas mines with a capacity of 31.41 million tons/year.Outburst mines and high-gas mines account for 80.2% of the total mines and their overall production capacity accounts for …
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 …
In the context of coal and gas outburst prevention, risk identification encompasses assessment, prediction, monitoring, and early warning across different scales and production stages. China has over 700 mines susceptible to outbursts with varying …
Therefore, scientific and rapid prediction of the coal seam outburst risk and effective prevention and control measures could ensure coal mine safety and …
Analysis of the causes of unsafe actions shows that insufficient safety knowledge at the Pingyu No.4 min. contributed to the following: (1) the danger of coal …
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 …
Mareshev, H., 2008, Prediction methods and prevention measures of coal and gas outburst. Earthquake Press, Beijing, 358 p. ... Coal seam gas content method to determine the protective layer mining outburst range of technology and application. Journal of China Coal Society, 39, 1786–1791. Google Scholar
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