Study and Application of Three-Step Supporting Design Method in Coal Roadway

Shan, Ren Liang; Kong, Xiang Song; Zhou, Jinjun; Wen, Zhao; Tao, Yu; Wei, Zhen

doi:10.4028/www.scientific.net/amm.353-356.252

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…Strengthen the control of the coal seam side and roof corner to improve the integrity of the support system. 48,49 The coal seam side is the main force to support the roof, and the roof corner is an important connecting part. Strengthening the support of the above two parts can reduce the limit equilibrium area range of the coal seam side and the generalized span of the roof, achieve the synergy of the side, corner, and roof.…”

Section: Control Strategy and Support Schemementioning

confidence: 99%

Research on the deformation mechanism and ACC control technology of gob‐side roadway in an extra‐thick coal seam with varying thickness

Shan,

Liu,

Wang

et al. 2024

Energy Science & Engineering

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To improve the extraction of coal resources, gob‐side entry driving is gradually being promoted and applied. However, as the thickness of the coal seam increases, the deformation control of the roadway becomes more difficult. Aiming at this problem, a combination of theoretical calculation, numerical simulation, and field test was used to analyze the aspects of the stress environment, surrounding rock properties, and support forms. The phenomenon and mechanization of intensified deformation and failure of roadway with increasing coal seam thickness were revealed. The specific results include: (1) The ratio of principal stress at the excavation position controls the maximum failure depth of roadway, and the direction of principal stress determines the location of the maximum failure depth; (2) As the thickness of the coal seam increases, the properties of the surrounding rock at the excavation position decrease, the principal stress ratio increases, and the deflection angle of the principal stress increases, which lead to an intensification of the deformation and failure of the roadway. Based on the deformation and failure characteristics of the roadway and the shortcomings of the original support form, a control strategy and support scheme based on a new support structure called “Anchor Cable with C‐shaped Tube” is proposed, which has achieved better deformation control effect in on‐site application.

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Section: Control Strategy and Support Schemementioning

confidence: 99%

Research on the deformation mechanism and ACC control technology of gob‐side roadway in an extra‐thick coal seam with varying thickness

Shan,

Liu,

Wang

et al. 2024

Energy Science & Engineering

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“…The plastic zone of surrounding rock near the sidewall is larger than that near the roof [25]. The serious damage of a roadway sidewall demonstrates that it is the key part that needs to be supported [26][27][28][29]. Local damage to the sidewall rocks can cause instability in the entire roadway, resulting in significant economic losses and even casualties.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Failure Mechanisms of Deep Roadway Sidewalls with Different Height-Width Ratios and Lateral Pressures

Wu,

Zhang,

Xing

et al. 2024

Applied Sciences

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The stability of roadway sidewalls is crucial to ensuring people’s safety and production efficiency in coal mining. This paper investigated the deformation and failure of deep roadway sidewalls, particularly the effects of height-width ratios and lateral pressure coefficients. Our research results indicate that brittle failure occurred in the diabase sidewall rock of the Datai coal mine, and a V-shaped pit was formed as a result of shear damage caused by high stress. When the height-width ratio of a roadway increases from 0.25 to 2.00, the tensile and shear plastic failure area of the sidewall increases, and vertical stress is transferred to a deep part of the roadway sidewall. There are two stress concentration zones and two stress peak points in the sidewall of a roadway. When the lateral pressure coefficient increases from 0.10 to 1.00, the tensile plastic zone of rock mass in the sidewall first decreases and gradually reaches stability. On the other hand, the shear failure area increases and then decreases. Similarly, the sidewall horizontal displacement decreases and then increases. Additionally, the vertical stress concentration position is located near the roadway sidewall.

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“…Conventional coal thickness interpretation techniques mainly include geostatistical coal thickness prediction technology, seismic attribute analysis technology and seismic inversion technology [4,5] . The study area is located in the middle of HSL coal mine in Gansu Province.…”

Section: Introductionmentioning

confidence: 99%

Application of seismic comprehensive interpretation technology in coal seam thickness prediction

Shan

Sun

2023

International Conference on Geographic Information and Remote Sensing Technology (GIRST 2022)

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Accurately predicting coal seam thickness is of great significance for mine production safety. Based on seismic exploration and geological data, seismic attribute analysis technology and logging constraint inversion technology were used to analyze the variation law of coal seam thickness in the study area. The prediction results show that for the study area with complex geological conditions, the seismic comprehensive interpretation technology can effectively predict the trend of coal seam thickness, and the sedimentary environment in the study area affects the regional variation of coal seam thickness.

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Study and Application of Three-Step Supporting Design Method in Coal Roadway

Cited by 4 publications

References 5 publications

Research on the deformation mechanism and ACC control technology of gob‐side roadway in an extra‐thick coal seam with varying thickness

Research on the deformation mechanism and ACC control technology of gob‐side roadway in an extra‐thick coal seam with varying thickness

Numerical Study on Failure Mechanisms of Deep Roadway Sidewalls with Different Height-Width Ratios and Lateral Pressures

Application of seismic comprehensive interpretation technology in coal seam thickness prediction

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