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Article
Effect of multi-factor dynamic loading on gob-side entry driving during longwall face extraction: a case study
As underground mining advances to the deep, roadway control has become crucial for the development of modern mines with high yield and high efficiency. This study is aimed at protecting the roadway from dynami...
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Article
Study on the Laws of Overlying Strata Movement of Repeated Mining of Close Distance Thick Coal Seam Under Large Surface Water
There is plentiful mineral under the water, and due to the limit of the natural environment, many difficult problems will appear in underwater mining. The paper aims at the problems in repeated mining of No.33...
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Article
The Fatigue Strength and Failure Mode of Coal Sample Subjected to Cyclic Loading
In order to study the fatigue strength and failure characteristics of coal samples, a series of multilevel cyclic loading tests were carried out. The test results show that: (1) When the confining pressure cor...
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Article
The Fractal Characteristics of Coal Sample’s Fragments Subjected to Cyclic Loading
A series of test were performed to study the fractal characteristics of fatigue failure of coal samples. The research revealed the difference of fractal characteristics in conventional compression test and cyc...
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Article
Supporting a Retained Gob-Side Entry Under Soft and Fractured Rock: Computer Simulations and a Practical Example
This study uses theoretical analysis, finite difference numerical simulations with FLAC3D software, and a field test to determine and demonstrate the most reasonable width for a retained gob-side entry and th...
