Results 91 to 100 of about 69,126 (260)

Burst Failure Characteristics and Energy Evolution Law of Coal with Prefabricated Cracks at Different Angles

Shock and Vibration
In order to study the influence of fissures on the burst tendency of coal, the test and numerical simulation of the burst tendency of coal with different burst angles were carried out.
Xiufeng Zhang, Yueyong Han, Yang Chen, Xingyin Ma, Xinrong Zhang, Cao Man, Yanchun Yin   +6 more
doaj   +1 more source

Interpretable Tree‐Based Models for Predicting Short‐Term Rockburst Risk Considering Multiple Factors

Energy Science &Engineering, EarlyView.
Interpretable tree‐based models integrate microseismic, geological, and mining indicators to predict short‐term rockburst risk. SHAP analysis reveals the dominant role of energy‐related features and clarifies nonlinear factor interactions, enabling transparent and reliable early‐warning in deep coal mines.
Shuai Chen, Linming Dou, Atao Li, Wu Cai, Lei Zhang   +4 more
wiley   +1 more source

Applications of acoustics in the measurement of coal slab thickness [PDF]

The determination of the possibility of employing acoustic waves at ultrasonic frequencies for measurements of thicknesses of slabs of coal backed by shale is investigated.
Hadden, W. J., Jr., Mills, J. M., Pierce, A. D.   +2 more
core   +1 more source

The British model in Britain: failing slowly [PDF]

, 2004
In 1990, Britain became the first developed country to reorganise its electricity industry to run on competitive lines. The British reforms are widely regarded as the benchmark for other reforms and the model used provides the basis for reforms of ...
Thomas, Stephen
core  

Experimental investigation of the precursor characteristics and early warning of coal burst based on quantitative analysis of acoustic emission signals

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Coal burst is one of the most frequent and destructive dynamic disasters encountered during underground mining engineering. However, the understanding of quantitative precursor characteristics of coal burst is still in its infancy, rendering it difficult
Xiaoling Zhao, Zhiyi Liao, Xiufeng Zhang, Cong Shen, Jianbo Zhu   +4 more
doaj   +1 more source

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

Analysis and Optimization of Early‐Warning Indicators for Impact Critical Stress in Deep Soft Coal Seams

Energy Science &Engineering, EarlyView.
This study determines the impact critical stress early‐warning indicators for deep soft coal seams: 18 MPa (shallow holes), 20 MPa (deep holes), and 3 MPa/d daily stress change rate, via theoretical, experimental and simulation methods. ABSTRACT The accurate determination of early‐warning indicators for critical impact stress in deep soft coal seams is
Haichen Yin, Xiufeng Zhang, Atao Li, Yanliang Wang, Long Yuan, Chaohong Shi, Yang Chen, Caiping Lu, Liangjin Jiang   +8 more
wiley   +1 more source

Study on Monitoring Rock Burst through Drill Pipe Torque

Shock and Vibration, 2015
This paper presents a new method to identify the danger of rock burst from the response of drill pipe torque during drilling process to overcome many defects of the conventional volume of drilled coal rubble method.
Zhonghua Li, Liyuan Zhu, Wanlei Yin, Yanfang Song   +3 more
doaj   +1 more source

FDNet: Knowledge and Data Fusion-Driven Deep Neural Network for Coal Burst Prediction. [PDF]

Sensors (Basel), 2022
Cao A, Liu Y, Yang X, Li S, Liu Y.
europepmc   +1 more source

Fifty Years of European Integration: A Remarkable Achievement [PDF]

, 2007
The following sections outline four main phases in the history of European integration. First, this Article examines the decisive contribution that European integration made in the immediate postwar years to solving the German question and achieving ...
Dinan, Desmond
core   +1 more source