Law of strata pressure behavior of surrounding rock in nearby goaf roadway for extra-thick coal seams of Datong mine area

Article Engineering, Multidisciplinary

An image recognition method for the deformation area of open-pit rock slopes under variable rainfall

Qihang Li et al.

Summary: This study simulated the deformation process of a large and steep rock slope in China under variable rainfall, finding that the increased deformation region is positively correlated with increasing pore water pressure and water content values, while the infiltration of rainfall softens weak interlayers and leads to failure of the slope toe first, followed by the middle and upper parts sliding and failing sequentially. The proposed improved region growing segmentation method showed a significantly reduced average identification error in X and Y directions compared to the original method, indicating its potential for high-precision identification of rock slope deformation in complex scenes.

MEASUREMENT (2022)

添加到收藏夹

Article Geosciences, Multidisciplinary

Investigation of failure prediction of open-pit coal mine landslides containing complex geological structures using the inverse velocity method

Han Du et al.

Summary: This study improves the accuracy of slope failure prediction by comparing the traditional IVM method and a modified IVM method. The effects of noise on the prediction results are assessed, and a two-level alert procedure combining different filters is proposed.

NATURAL HAZARDS (2022)

添加到收藏夹

Article

Automatic recognition of erosion area on the slope of tailings dam using region growing segmentation algorithm

Qihang Li et al.

Arabian Journal of Geosciences (2022)

添加到收藏夹

Article Engineering, Geological

Investigation of Mining-Induced Fault Reactivation Associated with Sublevel Caving in Metal Mines

Kaizong Xia et al.

Summary: This study monitored the long-term deformation of the Jinshandian Iron-ore Mine in China and analyzed the failure characteristics of underground roadways and the ground surface. It revealed the mechanisms responsible for mining-induced fault reactivation and identified different stages of failure in the surrounding rock masses based on the quality of overlying strata. Additionally, the study found that the collapse and destruction of columns in the abutment pressure zone significantly affected the fracturing in the surrounding rock masses.

ROCK MECHANICS AND ROCK ENGINEERING (2022)

添加到收藏夹

Article Engineering, Geological

Estimating the geological strength index and disturbance factor in the Hoek-Brown criterion using the acoustic wave velocity in the rock mass

Kaizong Xia et al.

Summary: This study develops a method to estimate GSI and D values using acoustic wave velocity, and proposes a new method for determining the mechanical parameters of the rock mass based on these improved values. The analysis results show that the method accurately reflects the factors affecting rock mass quality and disturbance, and its reliability is verified in practical engineering.

ENGINEERING GEOLOGY (2022)

添加到收藏夹

Article Geochemistry & Geophysics

Influence of Weak Interlayer on the Mechanical Performance of the Bolted Rock Mass with a Single Free Surface in Deep Mining

Shuxue Ding et al.

Summary: The study revealed that the weak interlayer has a significant impact on the compressive performance of bolted rock mass, especially when the strength of the weak interlayer is lower than 1.27 MPa, the thickness exceeds 20 mm, and the dip angle exceeds 15 degrees, the synergistic bearing effect will be significantly reduced and affect the mechanical performance of the specimens. The results provide valuable insights for understanding the influence of weak interlayers on mining engineering and guiding future mine reinforcement practices.

MINERALS (2021)

添加到收藏夹

Article Geosciences, Multidisciplinary

Repetitive Mining Stress and Pore Pressure Effects on Permeability and Pore Pressure Sensitivity of Bituminous Coal

Lei Zhang et al.

Summary: The study reveals the effects of different mining intensities, cyclic loading and unloading, and pore pressure on gas permeability in a coal mine. The permeability evolution curve can be described by quadratic polynomial equations and split into three stages. Different axial stress paths during cyclic loading and unloading have varying effects on coal permeability, with increased axial and confining pressures decreasing permeability and pore pressure sensitivity.

NATURAL RESOURCES RESEARCH (2021)

添加到收藏夹

Article Energy & Fuels