Results 11 to 20 of about 469 (202)
Development of a New Gob-Side Entry-Retaining Approach and Its Application [PDF]
Sustainability, 2018 Gob-side entry retaining plays an important role in the sustainable exploitation of coal resources and has been widely used in coal mining. However; some disadvantages, such as high labour intensity and low efficiency of wall construction, have gravely restricted the application of this technique.
Yujing Jiang +2 more
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Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesDouble-roadway tunneling technology can effectively relieve the mining‐replacement pressure associated with the combined use of double roadways and gob-side entry driving in traditional longwall panels, but it also introduces difficulties in maintaining ...
Dongdong Chen +4 more
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Control of floor heaves with steel pile in gob-side entry retaining
International Journal of Mining Science and Technology, 2016 Abstract A new approach named as steel pile method is innovatively proposed in this study to control severe floor heaves in gob-side entry retaining. It is required that the steel piles be installed in the floor corners with a certain interval before the influence of the dynamic pressure induced by current panel extraction. Using numerical simulation
Jianbiao Bai
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Stability study on naturally filling body in gob-side entry retaining
International Journal of Mining Science and Technology, 2012 Abstract In the construction of the filling gob-side entry retaining in a lane, we utilize the self-slide natural phenomenon of a falling gangue in an inclined coal seam goaf. First, we put the falling gangue of goaf above the laneway and made it the main filling material by adopting the measurement of flexible supporting system combined with those ...
Baojing Zhou +3 more
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Research on surrounding rock control technology of roof cutting and pressure relieving for roadside filling in gob-side entry retaining of large mining height panel [PDF]
Scientific ReportsThis article takes the transportation channel of the 2507 working face as the engineering background to carry out the analysis of the surrounding rock failure mechanism of the roadside filling in gob-side entry retaining of large mining height panel, and
Lu Weiyong +5 more
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Feasibility analysis of gob-side entry retaining on a working face in a steep coal seam
International Journal of Mining Science and Technology, 2014 Based on the decline in exploitation of coal resources, steep coal seam mining and mining face tensions continue to explore the feasibility analysis of steeply inclined faces in the gob.
Yuehua Deng, Shouquan Wang
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Applied Sciences, 2021 The traditional gob-side entry-retaining mining method has problems such as difficulty in roof collapse and large deformation of the entry, which may affect the safety of mine production.
Hainan Gao +6 more
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Energy Science & Engineering, 2019 The successful retaining of the gob‐side entry under a thick and hard roof stratum is difficult because of the high pressure present and complex construction technology commonly used.
Wanpeng Huang +5 more
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Grouting Technique for Gob‐Side Entry Retaining in Deep Mines [PDF]
Advances in Civil Engineering, 2021 The retained rib displacement accounts for roughly 80% of rib‐to‐rib convergence in gob‐side entry retaining in deep coal mines, which shows significant nonsymmetrical feature and long‐term rheological phenomenon. Affected by mining‐induced stress, cracks spread widely, and broken zones expand beyond the anchoring range.
Xianyang Yu +3 more
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Meikuang Anquan, 2022 The mining technology of gob-side entry retaining is widely adopted by China’s coal mining enterprises because of its high economic significance. However, gob-side entry retaining also has some problems, such as long service time, many times of mining ...
ZHAO Zhiyan
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