Results 11 to 20 of about 753 (208)
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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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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Distribution Law of Mining Stress of the Gob-Side Entry Retaining in Deep Mining Thin Coal Seam
Advances in Civil Engineering, 2021 In order to explore the mining pressure development rule of gob-side entry retaining during deep thin coal seam mining, FLAC3D numerical simulation is applied to analyze the stress distribution rule of gob-side entry retaining, observing the left third ...
Tao Qin +5 more
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A New Gob-Side Entry Layout Method for Two-Entry Longwall Systems
Energies, 2018 The gob-side entry layout is popular at two-entry longwall mine sites in China for the benefit of improving the coal recovery rate. Currently, two methods have been widely used to develop gob-side entries, including gob-side entry retaining and gob-side ...
Rui Wu +4 more
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Shock and Vibration, 2020 To solve the control problem of the surrounding rock of gob-side entry retaining under typical roof conditions in deep mines, we conduct theoretical analysis, numerical simulation, and actual measurements.
Jingke Wu +6 more
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Advances in Materials Science and Engineering, 2020 China has a large number of coal resources in “three-soft” geological conditions. The roof of these coal seams is soft and has low strength. Under this condition, gob-side entry retaining can be carried out under the guidance of roof leading holes to ...
Tao Yang, Jie Zhang
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Advances in Materials Science and Engineering, 2020 The stress concentration of gob-side entry surrounding rock is a hot topic in coal mining. In this paper, through theoretical analysis and numerical simulation, the pressure relief mechanism of the gob-side entry retaining by roof cutting and pressure ...
Yong Zhang +5 more
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The Stability of Gob‐Side Entry Retaining in a High‐Gas‐Risk Mine
Advances in Civil Engineering, 2019 There are series of problems faced by most of the coal mines in China, ranging from low‐coal recovery rate and strained replacement of working faces to gas accumulation in the upper corner of coalfaces. Based on the gob‐side entry retaining at the No. 18205 working face in a coal mine in Shanxi Province, theoretical analysis, numerical simulation, and ...
Junwen Zhang, Yulin Li
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Meikuang Anquan, 2021 The stability of the roof above the filling body is a key factor affecting the effect of gob-side entry retaining. In view of the problem of roof separation control of gob-side entry retaining at 22301 working face with large mining height in Tunlan Coal
CAO Junwen
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