“Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study by Ai Chen, Xuebin Li, Xuesheng Liu, Yunliang Tan, Ke Xu, Honglei Wang

“…The return airway of no. 130203 working face in Zaoquan Coal Mine of Ningdong Mining Area in Northwest China is the research object in this study. …”
Get full text

The Study on Large-Diameter Drilling Prevention Method of Rock Burst in the Xinxing Coal by Gao Xu, Zuo Minghui, Shu Yanmin

“…Based on the engineering background, the 41051 working face of the 65th coal mine in Qitaihe Xinxing Mine was regarded as the engineering background, by using of the comprehensive research methods such as theoretical analysis and calculation, FLAC3D numerical simulation, physical parameters of coal and rock in laboratory, and the field industrial measurement, to research on the large drilling relieving rock burst mechanism and parameter setting in reasonable. …”
Get full text

Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity by Xin Guo, Sheng Xue, Chunshan Zheng, Yaobin Li

“…To ensure the sealing effect of gas extraction borehole in underground coal mine and improve the concentration of gas extraction, a kind of high-flow sealing material which can be injected into the microcracks around borehole was developed. …”
Get full text

Stability Mechanism and Control Factors on Equipment Removal Area under “Goaf-Roof-Coal” Structure by Zhongshun Chen, Yong Yuan, Cheng Zhu, Wenmiao Wang

“…In order to solve this problem, the stability mechanism and its control factors during the LM equipment removal were investigated by using comprehensive methods including theoretical analysis, numerical simulation, and field validation based on the working conditions of Panel 31102 in Liangshuijing Coal Mine. The numerical simulations demonstrate that four different failure zones, shear failure zone, tension failure zone, partly elastic zone, and plastic failure zone, appear around the area due to the position of rock and the arrangements of the supports. …”
Get full text

Cutting-Caving Ratio Optimization of Fully Mechanized Caving Mining with Large Mining Height of Extremely Thick Coal Seam by Kai Wang, Tong Zhao, Kaan Yetilmezsoy, Xiaoqiang Zhang

“…Engineering application showed that the optimal cutting height of Xiegou Coal Mine was 4 m, the cutting-caving ratio was 1 : 2.75, and the recovery rate could reach more than 85%, which was the most reasonable.…”
Get full text

Prevention Technology for Strong Mine Pressure Disaster in the Hard-Roof Large-Mining-Height Working Face by Hongfei Duan, Lijuan Zhao

“…Considering Tongxin Coal Mine as the engineering background, the stress distribution law of the surrounding rock and the overburden rock damage characteristics of a large-mining-height working face under the hard roof were investigated. …”
Get full text

The Study of Key Stratum Location and Characteristics on the Mining of Extremely Thick Coal Seam under Goaf by Gaochuan Guo, Yongkang Yang

“…This method was used to determine the position of interlayer key stratum of overlying strata in Xiegou coal mine. And the results agree with that of the engineering practice. …”
Get full text

Energy Accumulation and Dissipation of Coal with Preopening under Uniaxial Loading by Xin Wei, Hao Hu, Yang Li

Get full text

Optimization and Practice for Partition Pressure Relief of Deep Mining Roadway Using Empty-Hole and Deep-Hole Blasting to Weaken Coal by Baobao Chen, Changyou Liu, Fengfeng Wu

Get full text

Risk Prediction Algorithm of Social Security Fund Operation Based on RBF Neural Network by Linxuan Yang

“…On this basis, the prediction model based on the improved ANT colony-RBF neural network is established, and the MATLAB software calculation tool is used for accurate calculation, which makes the prediction results of coal mine safety risk more accurate and provides more reliable decision basis for decision makers. …”
Get full text

Study of the Penetration and Diffusion Characteristics of Inorganic Solidified Foam in Rock Fractures by Yi Lu, Tao Wang, Qing Ye

Get full text

Study on Acoustic Emission Characteristics and Damage Evolution Law of Shale under Uniaxial Compression by Wenjie Wu, Chee-Ming Chan, Yilei Gu, Xiaopeng Su

Get full text

Experimental Study on Mechanism of Graphene Oxide-Modified Coral Sand Cement Mortar to Resist Sulfate Erosion by Bin Chen, Jianlin Zhang, Yanlin Zhao, Yiwei Lu

Get full text

Numerical Simulation of Mechanical Characteristics of Roadway Surrounding Rock under Dynamic and Static Loading by Ce Jia, Sheng Li, Chaojun Fan, Jinbao Tang

“…In this study, the 2802 transportation roadway in Zhangcun Coal Mine is selected as the engineering background. …”
Get full text

Parameter Optimization of Constant Pressure Grouting Technology for Borehole Sealing with Inorganic Noncondensable Material in Tectonic Coalbed of South China by Zhao Pengtao, Wang Haiqiao, Wang Long, Wang Xinlei, Ma Hongyu

“…Adopting the constant pressure grouting technology with the slurry, the average drainage concentration of boreholes in Puxi coal mine is 51.5%, and the average gas flow rate is 0.005 m3/min, which are 1.35 times and 1.67 times than those with the cement grouting method.…”
Get full text

Experimental Investigation on the Energy Consumption Difference between the Dynamic Impact and the Drilling Tests of Rocks by Shoudong Xie, Mingjian Huang, Junji Lu, Wang Xi, Zhenyang Xu

Get full text

Risk Decision-Making Technology in Gas Reservoir Development at Sichuan Basin by Guo Yu, Haitao Li, Yanru Chen, Linqing Liu, Dongming Zhang

Get full text

Damage Characteristics Caused by Deep-Hole Blasting near Normal Fault and Its Effects on Coal and Gas Outbursts by Kui Gao, Guodong Qiao, Zegong Liu, Wei Xia

“…Based on cases of coal and gas outbursts in the Didaoshenghe Coal Mine in Heilongjiang Province, China, an important reason for such incidents is considered to be the blasting areas of normal faults being disturbed by air-powered coal drilling.…”
Get full text

Floor Disturbance and Failure Characteristics of Super-Large Mining Height Working Face by Cunjin Lu, Jinpeng Xu, Hui Zhao, Heng Zhang, Yian Zhang, Mingyue Chen

“…In this paper, the working face with a super-large mining height of 24 m in Longwanggou Coal Mine was studied. Electrical monitoring and numerical simulation of the working face floor were carried out. …”
Get full text

Development and Application of Fluid-Solid Coupling Similar Materials in Discharge Test of Old Goaf Water by Zhenhua Li, Mingxiao Ma, Yongsheng Bao

Get full text