Study on Four-Dimensional Coupling Evaluation and Graded Dynamic Support Methods for Surrounding Rock Softening in High-Stress Soft Rock Roadways of Kilometer-Deep Mines

Deformation failure mechanism of deep high-stress fractured soft rock roadways and active-passive full-space collaborative control technology.

Controlling the stability of deep high-stress fractured soft rock roadways is a key scientific issue in mining engineering. Using the south wing return-air roadway at the - 650 level of Yangcheng Coal Mine as the engineering background, this study performed mechanical property tests, mineral composition analysis, and i...

Study on the Interaction Between Surrounding Rock and Support in High-Stress Soft Rock Roadways Based on Rock Rheological Properties

High-stress soft rock roadways in deep underground engineering often exhibit significant time-dependent deformation due to strong rheological behavior of surrounding rock. To investigate the deformation characteristics and support effect, a composite viscoelastic constitutive model considering anchored and unanchored r...

Surrounding Rock Deformation Mechanisms and Control in Deep Mining: A Comprehensive Review

Study on spatiotemporal evolution law of surrounding rock stress in deep high-stress soft rock roadways

To address large deformation and support failure in deep, high-stress soft-rock roadways, this study investigates the − 810 m track main roadway of Pansan Coal Mine using fiber Bragg grating three-dimensional stress monitoring and borehole fracture observation, combined with FLAC3D numerical simulations. Results show t...

Stress Distribution and Evolution Characteristics of Hard–Soft Interbedded Floor Strata Subjected to Coal Pillar Loading

To reveal the stress transfer mechanism of overlying coal pillar loads in hard–soft composite floor strata during close-distance coal seam mining, this study comprehensively employed theoretical analysis, similar material simulation, and numerical simulation to systematically investigate the floor stress distribution c...

Failure mechanism of gob-side entry in weakly cemented soft rock and bolt-grouting collaborative control method: a case study.

During coal mining in western China, soft rocks with low strength, poor cementation, and a tendency to disintegrate upon water exposure are often encountered. This makes bolt support unable to maintain long‑term roadway stability, resulting in severe roadway deformation and failure. To solve this challenge, this manusc...