Research on Advance Rate Effects and Their Regulation of Strata Pressure Behavior in Deeply Buried Weakly Cemented Longwall Panels Under High-Intensity Mining Conditions
Source abstract
Abstract
This study investigates the exacerbated strata pressure manifestations induced by high-intensity mining in medium-deep weakly cemented coal seams in western China. An integrated research methodology combining theoretical analysis, field measurements, and numerical simulation was employed to develop a mechanical model of overburden fracture structures in weakly cemented mining faces, systematically revealing the dynamic effects of face advance rate on strata pressure behavior. The results demonstrate that the advance rate not only significantly governs the evolutionary patterns of roof caving and weighting intervals but also exhibits nonlinear correlations with the distribution characteristics of abutment pressure. Furthermore, microseismic parameters effectively characterize the response of strata pressure intensity to advance rate variations. The proposed dynamic control methodology provides both theoretical foundations for safe mining in weakly cemented strata and innovative technical solutions for ground control in deep high-intensity mining operations.
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Research context
OpenAlex topics: Rock Mechanics and Modeling · Geomechanics and Mining Engineering · Geoscience and Mining Technology
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shandong Key Laboratory of Intelligent Prevention and Control of Dynamic Disaster in Deep Mines, Qingdao 266590, China
College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Funding
Youth Program of the National Natural Science Foundation of China · Natural Science Foundation of Shandong Province
References (25)
Show source-provided references
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