Generating Behaviors of Strong Tremors and Experimental Study of Rockburst-Triggering Criterion by Guifeng Wang, Feng Jin, Siyuan Gong, Linming Dou, Chaojun Fan, Wu Cai, Xiaoyuan Yuan

“…Numerous tremors occur during excavation and mining periods in coal mines, and low-energy tremors often occur before strong tremors. …”
Get full text

Deformation and Failure Mechanism of Roadway Sensitive to Stress Disturbance and Its Zonal Support Technology by Qiangling Yao, Xuehua Li, Fan Pan, Teng Wang, Guang Wang

“…The 6163 haulage roadway in the Qidong coal mine passes through a fault zone, which causes severe deformation in the surrounding rock, requiring repeated roadway repairs. …”
Get full text

Prediction of Residual Gas Content during Coal Roadway Tunneling Based on Drilling Cuttings Indices and BA-ELM Algorithm by Zhenhua Yang, Hongwei Zhang, Sheng Li, Chaojun Fan

“…The test indices of outburst prevention measures (drilling cuttings indices, residual gas content in coal seam) during roadway advancing in Yuecheng coal mine were first analyzed. Then, the correlation between drilling cuttings indices and residual gas content was established, as well as the neural network prediction model based on BA-ELM. …”
Get full text

An Improved Strong Tracking Kalman Filter Algorithm for the Initial Alignment of the Shearer by Yuming Chen, Wei Li, Gaifang Xin, Hai Yang, Ting Xia

“…The strap-down inertial navigation system (SINS) is a commonly used sensor for autonomous underground navigation, which can be used for shearer positioning under a coal mine. During the process of initial alignment, inaccurate or time-varying noise covariance matrices will significantly degrade the accuracy of the initial alignment of the shearer. …”
Get full text

Partitioning Control Mechanism and Engineering Practice of Rebuilding Bearing Arch in Surrounding Rock under High Ground Stress by Mengtang Xu, Ke Li, Youlin Xu

“…The results are applied to the Wantian coal mine. The theoretically determined load-bearing thickness is 10 m, which can effectively control the surrounding rock deformation and significantly reduce the roadway’s repair rate.…”
Get full text

Effect of Indenter Angle on Bearing Performance of Coal and Accompanying Rocks Under Point Load and Characterization of Mechanical Parameters by Qian Wang, Yujiang Zhang, Delong Cui, Guorui Feng, Yunlou Du, Shuai Zhang, Haojie Cheng, Zhengjun Zhang

“…ABSTRACT Coal, mudstone, sandstone, and limestone, which are common in coal mines, were selected as research objects, and 60°, 90°, and 120° indenters were used to conduct point load tests to study the deformation and failure laws of rocks under point loads. …”
Get full text

Optimization of the Plastic Area of a Borehole Based on the Gas Extraction Effect and Its Engineering Application by Kuan Wu, Shiliang Shi, Yi Lu, He Li, Min Li

“…Gas extraction is most commonly used to control gas disasters in coal mines. The distribution of the plastic zone around a borehole and the sealing quality are key factors affecting gas extraction. …”
Get full text

Applying Environmental Isotope Theory to Groundwater Recharge in the Jiaozuo Mining Area, China by Pinghua Huang, Xinyi Wang

“…The research conclusion holds a certain value for the flood evaluation of local coal mines.…”
Get full text

Experimental and Theoretical Investigation of Overburden Failure Law of Fully Mechanized Work Face in Steep Coal Seam by Ze Liao, Tao Feng, Weijian Yu, Genshui Wu, Ke Li

“…Based on the geological conditions of Xiangyong coal mine in Hunan Province of China, the laws of roof deformation and failure in steep coal seam are obtained by similar simulation experiments. …”
Get full text

Study on Characteristics of Mining Earthquake in Multicoal Seam Mining under Thick and Hard Strata in High Position by Shuli Wang, Guangli Zhu, Kaizhi Zhang, Lei Yang

“…Multicoal seam mining of 10302 working face in Baodian coal mine is selected as an engineering background, which has thick and hard strata in high position. …”
Get full text

Role of Oxidants in Interstitial Lung Diseases: Pneumoconioses, Constrictive Bronchiolitis, and Chronic Tropical Pulmonary Eosinophilia by William N. Rom

“…Etiologic agents include inorganic particulates such as asbestos, silica, or coal mine dust or mixtures of inorganic dust and combustion materials found in World Trade Center dust and smoke. …”
Get full text

The Properties of a Coal Body and Prediction of Compound Coal-Rock Dynamic Disasters by Guowei Dong, Xuanming Liang, Zhen Wang

“…Based on the unique physical-mechanical properties of compound coal-rock dynamic disaster coal, a reasonably sensitive predictive index and critical value for Donglin Coal Mine were determined.…”
Get full text

An Experimental Apparatus for Monitoring Radon during Compression of Coal/Rock Samples and Its Preliminary Application by Wei Zhang, Kaidi Xie, Yanchao Zhu, Yandong Zhang, Xu Duan, Jibo Zhu

“…The developed apparatus was preliminarily utilized for uniaxial compression tests on mudstone samples taken from the #21105 coalface of the Fourth Coal Mine in Yili Coalfield, China. The test results show that before sample failure under the uniaxial compressive load (UCL), the radon concentration is negatively correlated with the applied UCL and the magnitude of imposed elastic deformation. …”
Get full text

ENHANCING OPERATIONAL EFFICIENCY IN COAL ENTERPRISES THROUGH CAPACITY LAYOUT OPTIMISATION: A COST-EFFECTIVENESS ANALYSIS by D. A. Pervukhin, Lisha Tang

“…The case studies of Mt Arthur Coal and Shendong Coal Mine are discussed to exemplify practical applications and corresponding effects that layout optimisation decisions may have on workforce dynamics and operational performance. …”
Get full text

Roadway Support in Deep “Three-Soft” Coal Seam: A Case Study in Yili Mining Area, China by Wenxin Li, Jinxiao Liu, Lianjun Chen, Zhilu Zhong, Yongle Liu

“…Taking the auxiliary conveying uphill roadway in Yili No. 1 Coal Mine as the engineering background, the deformation and failure mechanism of the surrounding rock and the supporting technology were studied. …”
Get full text

Experimental Study on Acoustic Emission of Weakly Cemented Sandstone considering Bedding Angle by Hong Wang, Tianhong Yang, Yujun Zuo

“…Uniaxial compression experiments and acoustic emission (AE) tests were conducted on weakly consolidated sandstone samples with bedding angle of 0°, 45°, and 90° collected from Xiaojihan coal mine in Shaanxi Province, China; the acoustic emission (AE) characteristics of bedding sandstone were investigated, including the influencing mechanism of bedding angle on characteristics, spatial distribution, and b value changes of AE activity. …”
Get full text

Mechanism of Extruding Flowing Floor Heave in Mining Gateways Using an Elastic Foundation Beam Model by Pan Chen, Yuan-Xiang Yu, Shuan-Cheng Gu

“…Finally, taking the 350–450 m section of the transportation lane in the 14501 working face of Bailiang coal mine as an example, the limit equilibrium of the wall width and the floor breakage depth are calculated on the basis of the relevant parameters. …”
Get full text

Analysis of Mechanical Properties and Damage Behavior of Coal and Sandstone under Different Impact Velocities by Guoning Zhang, Yongjiang Yu, Wei Zhang

“…The relevant results can provide a theoretical basis for coal mine disaster warning and tunnel support.…”
Get full text

A Study on the Instability Mechanisms of Coal Pillars in Shallow Coal Seams Group Mining by Tielin Shang, Jindong Wang, Yuwei Liu, Yonglu Suo, Zhiyi Wang, Sixin Fu, Fei Zhang

“…To explore the instability mechanisms of coal pillars in the upper coal during coal seam group mining in the Yulin area and hence to achieve safe and green mining of the lower coal seams, the engineering geological condition for no. 3−1, no. 4−2, and no. 5−2 coal seams in the north-second panel area of Hongliulin Coal Mine was investigated in this article. Using the combination of physical simulation, FLAC3D numerical calculation, and theoretical analysis, the instability mechanisms, the characteristics of the fracture structure, and fracture evolution between the coal pillars and the interval rocks were all studied. …”
Get full text

Research on Mining-Induced Stress Distribution of Extrathick Coal Seams Based on Electromagnetic Wave CT Technology by Tuan He, Guodong Li, Feng Luo, Xueqing Li

“…This research is based on the No. 3106 working face of Lu-Zi-Gou coal mine in China, which extracts extrathick coal seams by using the comprehensive mechanized top-coal caving method. …”
Get full text