Results 1 to 10 of about 1,626 (149)
Study on the technology and application of cooperative roadway protection with roof cutting pressure relief and CO2 mineralization and filling [PDF]
Scientific ReportsExploring the possibility of the application of roof cutting pressure relief and filling support collaborative roadway protection technology has important forward-looking significance for deep coal mine mining.
Guangzhe DENG, Hongjian LI
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Applied SciencesThe phenomenon of crushing the support of the hard roof of a coal seam occurs occasionally during the coal mining process. However, making the hard roof fall is difficult due to its good integrity and high strength.
Hanlin You, Zegong Liu
doaj +5 more sources
Analysis of Overburden Structure and Pressure-Relief Effect of Hard Roof Blasting and Cutting [PDF]
Advances in Civil Engineering, 2019 When studying the pressure-relief effect of hard roof blasting and cutting, the roof-cutting position and angle obviously affect the stability of the rock surrounding the gob-side entry (GSE).
Hao Liu +4 more
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Applied SciencesChina’s roof-cutting and pressure relief gob-side entry retaining (RCPR-GER) technology provides an efficient non-pillar mining solution that significantly enhances coal recovery.
Dong Duan +7 more
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Stability and Cementation of the Surrounding Rock in Roof-Cutting and Pressure-Relief Entry under Mining Influence [PDF]
Energies, 2022 The application of roof-cutting and pressure-relief gob-side entry retention plays a critical role in controlling the stability of the surrounding rock at the entry, easing continuity tension and improving resource recovery ratio. The excavation of the 360,803 airway in Xinji No. 1 Mine is affected by intense mining of the 360,805 working face.
Min Tu, Yingfu Li, Guanfeng Chang
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Mechanisms and Applications of Pressure Relief by Roof Cutting of a Deep-Buried Roadway near Goafs [PDF]
Energies, 2020 Affected by high ground stress, the surrounding rock control of a roadway is one of the most important factors restricting the utilization of deep resources. Therefore, it is necessary to propose a method to improve the stress environment of the deep-buried roadway and reduce its deformation.
Chao Su
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Study on the Ground Pressure Manifestation Patterns of Roof Cutting and Pressure Relief
Applied Sciences (Switzerland)Pillarless mining technology is of great significance for improving coal recovery rates, but the intense mining-induced stress disturbances on gob-side entries often lead to surrounding rock instability. In this study, we focused on the ground control challenges in the headgate of Panel 81308 at Huayang Mine No. 2.
Zheng, Runhu +3 more
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Applied Sciences (Switzerland)Roof cutting by dense drilling is one of the main methods of gob-side entry retaining. Taking the 203 working face of the Ruineng Coal Mine as the engineering background, a mechanical model is established to clarify the roof breaking mechanism. Numerical simulation is conducted to analyze the roof cutting effects of different parameters, and reasonable
Hongping Yuan, Shenghu Luo
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Research on Roof Cutting Pressure Relief of the Gob-Side Entry Retaining With Roadside Backfilling
Frontiers in Earth Science, 2022 Based on the application of the retained gob-side entry in a fully mechanized face E2307 headgate, the stress distribution and deformation characteristics of the roadside backfill body for different types of roof cutting were investigated in this study by employing a combination method of theoretical analysis, numerical simulation, and field ...
Xin Yue, Hanrui Zhang
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Meikuang Anquan, 2022 The severe mining pressure of surrounding rock along goaf retaining roadway has become the bottleneck of safe and efficient production of coal mine.
LYU Weibin +3 more
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