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Application of photogrammetry and in-situ test technology in the stability evaluation of gangue dump slope
In order to analyze the stability of the Lijiahao gangue dump slope and evaluate its impact on the safety of the industrial square, the geological...
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Reasonable gangue section length for disposing gangue pollutants in the new green mixed workface
Liberating layer mining is often used in high gas and low permeability coal seam, but this mining method will produce a large number of gangues. If...
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Mining-induced off-layer space evolution law and gangue grouting filling control mechanism
Separation grouting filling technology is widely used in surface subsidence management because of its simple process and good overburden control...
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Determining the reasonable pillar width and surrounding rock control based on goaf compaction
The stress distribution and deformation of roadway surrounding rock at different pillar widths are investigated through theoretical calculation,...
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Influence of Mining Speed on Stope Energy in Deep Mines
Enhancing the mining speed of a working face has become the primary approach to achieve high production and efficiency in coal mines, thereby further...
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Research on Reasonable Width of Coal Pillars of Non-equal Width Isolated Working Face Heading Goaf in Deep Mine
Setting reasonable coal pillar is a key to ensure safe mining of island coal face heading goaf in deep mine. With the background of typical deeply...
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A non-coal pillar mining method by concrete carrier replacing coal pillar: a case study
Concrete carriers are stronger and cheaper than coal pillars. The gangues in the coal mine gob to produce concrete can not only achieve the...
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Evolution and control of overburden fracture in extra-thick coal seam mining with hard roofs: ground grouting sealing and case study
In the process of coal mining, the original state of rock strata is seriously damaged and a large number of fractures are produced. If the fracture...
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Reasonable Width of Segment Pillar of Fully-Mechanized Caving Face in Inclined Extra-Thick Coal Seam
Determining the reasonable coal pillar width of fully-mechanized caving mining in inclined and extra-thick coal seam is important to improve the coal...
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Comparison of large deformation failure control method in a deep gob-side roadway: A theoretical analysis and field investigation
Under the dual influence of the mining disturbance of the previous working face and the advanced mining of the working face, the roadway is prone to...
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Introduction to Ore Microscopy
This chapter presents the main concepts and the observation methodology applied for optical ore microscopy. It also introduces the reader to its...
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Mine Pressure Behavior of Gob-Side Entry Retaining by Roof Cutting in Closely Spaced Coal Seams
To study the influence of the mined-out area in the nearby upper section of a coal seam on the mining of the working face of the lower seam, in this...
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Overview of the Study Area
Yushen Mining area is under the jurisdiction of Yuyang District and Shenmu County of Yulin City and is located in the north of Yulin City, Shaanxi...
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Drawing mechanisms of granular top coal considering the structure of hydraulic support in longwall top coal caving
Drawing support is one of the unique equipment for longwall top coal caving (LTCC) technology in coal mine, whose structure has a significant effect...
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Research on Novel Method of Gob-Side Entry Retaining Under the Synergistic Effect of Roof Cutting and Roadside Filling in Thick Coal Seams
With the increase of coal seam mining thickness, the caving height of stope roof, the mining-induced stress increase, and the control difficulty of...
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Comparative Analysis on the Safety Characteristics of N00 Mining Method with Conventional 121 Mining Method
Driven by the need to address safety concerns in current mining systems, we have developed a novel coal mining technology known as the N00 mining...
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The Characteristics of Roof Breaking and the Law of Ground Pressure Behavior in Fully Mechanized Top-coal Caving Face with Large Mining Height
In view of the characteristics of large overburden movement space, strong mining disturbance and difficult to determine the initial pressure step...
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Instability mechanism and stability control of gob-side entry in a deep mine: a case study
For stability control of gob-side entry (GSE) in a deep mine, surrounding rock reinforcement and roof cutting are commonly used technical methods....
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Study on Surrounding Rock Control of Gob-Side Entry Retaining in Inclined and Thick Longwall Face
The gob-side retaining can save coal pillar of mining area and improve coal recovery rate of working face. Meanwhile, this technology helps relieve...
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Roof Stability Mechanism and Support Technology Optimization of Tunneling Roadway
To study the stability of roof areas in the process of rapid driving in coal roadways, the deformation law of roof areas under the interaction of...
