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Gong-kuang zidonghua
ISSN 1671-251X · Editorial Department of Industry and Mine Automation · 4,519 articles in the index
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Journal Article
Hazard assessment of strong mine pressure at working face crossing coal pillars in shallow closely spaced coal seams
When lower seams in shallow closely spaced coal seam groups are mined beneath overlying residual coal pillars, strong mine pressure hazards characterized by step subsidence of the roof or support crushing can readily occur, and their quantitative hazard assessment is difficult for field control…
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Journal Article
Research and application of controllable, agile, and pressure-stabilizing liquid supply system for coal mining face
During group advancing of hydraulic supports at a coal mining face, the hydraulic system experiences excessive pressure fluctuations, and the maximum capacity of the liquid supply system cannot meet instantaneous high-flow demand. Pressure-stabilizing liquid supply with support-mounted accumulators…
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Journal Article
Failure characteristics and support technology for a special-shaped roadway in an inclined coal seam under disturbance by roof stress waves
To analyze the dynamic response characteristics and failure behavior of the surrounding rock of a special-shaped roadway in an inclined coal seam, the special-shaped roadway of working face 21194 at Dabaoding Coal Mine of Sichuan Chuanmei Huarong Energy Co., Ltd. was taken as the engineering…
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Journal Article
Shearer fault-crossing method integrating coal loss model and equipment spatial constraints
Existing methods for shearers to cross faults seldom account for spatial constraints on fully mechanized mining equipment with respect to the roof and floor and the working-face advance and cutting directions, or the amount of retained coal, resulting in low cutting efficiency, high coal loss, and…
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Journal Article
Intelligent air volume control of mine ventilators based on improved BSO-fuzzy PID
For fuzzy PID control of mine ventilators, the core tuning parameters are determined empirically, cannot be updated autonomously, and are difficult to adapt to complex and variable mine ventilation conditions. To address these problems, an intelligent air volume control method for mine ventilators…
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Journal Article
End-to-end intelligent voice dispatching driven by a large language model for coal mines
To address response delays and information errors and omissions caused by reliance on manual call answering and paper records in coal mine dispatching, this study investigated end-to-end intelligent voice dispatching driven by a Large Language Model (LLM) for coal mines. An intelligent voice…
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Journal Article
Dynamic SLAM method for underground coal mines integrating zero-shot semantic priors and dual geometric constraints
Scarce semantically annotated data for underground coal mines, missing depth information, and complex and diverse motion patterns of dynamic objects such as personnel and equipment increase feature mismatches and reduce pose estimation stability in Visual Simultaneous Localization and Mapping…
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Journal Article
Experimental study on mechanical response characteristics of coal specimens with boreholes under cyclic loading
To investigate the mechanical response characteristics of coal specimens with boreholes under different loading rates and cyclic loading, mechanical tests were conducted on coal specimens with boreholes selected from a working face of Changcun Coal Mine under different stress paths (monotonic…
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Journal Article
Distortion-resistant dual-branch millimeter-wave radar gait recognition for underground overhead-view scenarios
As a long-range, noninvasive behavioral biometric, gait is difficult to forge, requires no active cooperation, and is suitable for continuous monitoring. Millimeter-wave radar-based gait recognition provides a new technical approach for contactless personnel identification in complex underground…
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Journal Article
Effects of coal-rock interface inclination and stress difference on hydraulic fracture propagation
Coal-rock interface inclination and stress difference are key geometric and mechanical factors, respectively, that affect hydraulic fracture propagation. Investigating their effects and coupling helps elucidate mechanisms of hydraulic fracture propagation across complex coal-rock interfaces…
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Journal Article
Rockburst risk identification model based on microseismic fractal dimensions and its application
To address insufficient integration of multi-attribute microseismic information, predominantly qualitative extraction of precursor features, and limited quantification of risk levels in existing rockburst risk identification methods, this study proposed a rockburst risk identification model based…
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Journal Article
Regional gas control technology using long-borehole perforation–fracturing composite permeability enhancement in medium-hard coal seams
To address technical problems such as high fracture initiation pressure and uncontrollable fracture propagation when conventional hydraulic fracturing is used for gas control in medium-hard coal seams, a regional gas control technology based on directional long-borehole perforation–fracturing…
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Journal Article
Denoising method for coal mine roadway point clouds based on a multi-scale feature fusion network
Raw point clouds acquired by three-dimensional laser scanning in coal mine roadways contain a large amount of noise. Existing point cloud denoising methods cannot simultaneously remove multiple types of noisy points and incur high computational overhead, making it difficult to meet the requirements…
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Journal Article
Method for regulating required airflow in mine roadways based on MSCALA
To address insufficient precision in determining ventilation resistance adjustment ranges and the susceptibility of coordinated multi-branch airflow regulation to disturbance-induced imbalance in conventional required-airflow regulation for mine roadways, this study proposed a method for regulating…
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Journal Article
Autonomous deviation-correction algorithm with low computational requirements for mobile equipment in underground coal mines
As coal mining advances toward intelligent and manpower-reduction operation, the need for autonomous relocation of underground mobile equipment is becoming increasingly evident. To address the high computational-resource requirements of existing roadway navigation methods, the difficulty in…
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Journal Article
Autonomous navigation and collaborative control of coal mine roadway cleaning robot
To address localization degradation of coal mine roadway cleaning robots in long, straight roadways where satellite signals are unavailable, difficulties in multi-process coordination, and reliance on manual intervention for attachment replacement, a comprehensive control method integrating…
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Journal Article
Ash content prediction of flotation tailings based on sediment hyperspectral images
High-precision online detection of ash content in flotation tailings is essential for intelligent coal preparation, but conventional vision-based methods are susceptible to interference from water films and metamerism. To address this issue, the diffuse-reflectance optical response mechanism of…
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Journal Article
Effects of CaCO3 particle size and mass concentration on gas explosion suppression under CO2 inerting conditions
To investigate the effect of CaCO3 on gas explosion suppression under CO2 inerting conditions, gas-solid combined explosion suppression experiments using CO2 and CaCO3 were conducted in a 60 L constant-volume combustion chamber. At a CO2 volume fraction of 2%, the effects of different CaCO3…
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Journal Article
High-reliability analysis of an SPN-based industrial ring network for mines
Against the background of multi-service convergence in intelligent mines, conventional studies on the reliability of industrial Ethernet ring networks have focused mainly on ring protection switching speed and static redundancy configurations, making it difficult to meet the high-reliability…
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Journal Article
Coal flow rate measurement method for belt conveyors
Most existing coal flow rate calculation methods focus on contour reconstruction and volume calculation. They generally regard the bulk density of coal flow as a constant, overlooking measurement deviations caused by changes in particle-size distribution. Moreover, conventional image segmentation…
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