Prediction study of rock burst during deep mining excavation in a Chinese gold mine

2020 ◽  
pp. 443-445
Author(s):  
Cai Meifeng ◽  
Wang Jinan ◽  
Wang Shuanghong
Keyword(s):  
Rock Burst ◽  
Gold Mine ◽  
Deep Mining

Analysis on rock burst danger when fully-mechanized caving coal face passed fault with deep mining

2012 ◽  
Vol 50 (4) ◽  
pp. 645-648 ◽  
Author(s):  
Xuehua Chen ◽  
Weiqing Li ◽  
Xianyang Yan
Keyword(s):  
Rock Burst ◽  
Coal Face ◽  
Deep Mining

Deep Mining Optimization of Rock Burst Mines

2013 ◽  
Vol 448-453 ◽  
pp. 3859-3862
Author(s):  
Yong Mei
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Rock Burst ◽  
Water Injection ◽  
Coal Face ◽  
Deep Mining ◽  
Organization Model ◽  
Pressure Water ◽  
Injection Effect ◽  
System Layout

To prevent threaten of impact disaster, high-pressure water is injected into coal face, which is most widely used in impact-type mine. In such cases, by analyzing the rock burst tendency of a particular type of deep mining pit and occurrence of the mining process, rock samples drilled from the coal mine were taken for the conventional mechanical properties test and rock burst tendency test respectively under dry and wet state. Cuttings volume indicator affected by injection has been optimized to improve the prediction sensitivity. "One shift anti-impact, two-shift production "patterns labor organization model, adjusted development system layout and cut drilling index optimizations, as well as the allocation of high-pressure water injection drilling means, greatly improving the water injection effect, which probably provide a reference for similar mines to safe and efficiently mining.

scholarly journals A Control Method of Rock Burst for Dynamic Roadway Floor in Deep Mining Mine

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Zhimin Xiao ◽  
Jun Liu ◽  
Shitan Gu ◽  
Mingqing Liu ◽  
Futian Zhao ◽  
...  
Keyword(s):  
Rock Burst ◽  
Control Method ◽  
Tectonic Stress ◽  
Surrounding Rock ◽  
Floor Rock ◽  
Deep Mining ◽  
Failure Characteristics ◽  
Deformation And Failure ◽  
Working Face ◽  
Geological Conditions

Roadway floor rock burst is an important manifestation of rock bursts in deeply buried mines. With the increase of mining depth and mining intensity, rock burst disasters in the roadway floor such as floor heaves are becoming more serious. The article investigated the roadway floor severe heave caused by floor rock burst during excavation of the No. 3401 working face, which was controlled by an anticlinal structure and deep mining in Shandong Mine, China. Firstly, by analyzing geological conditions of the working face, roadway support parameters, and characteristics of coal and rock, it was revealed that high tectonic stress and high crustal stress were main causes of the floor rock burst. Secondly, based on the Theory of Mechanics and Theory of Energy, the energy conversion process in the roadway floor was discussed, and the rock burst condition caused by elastic energy in the roadway floor was analyzed. The failure characteristics of roadway-surrounding rock were also inspected, using a borehole recorder. The roof and sidewalls of roadway mainly contained fissures and cracks, whereas cracks and broken areas are distributed in the roadway floor. Finally, based on the deformation and failure characteristics of roadway-surrounding rock, a method termed “overbreaking-bolting and grouting-backfill” was proposed to control roadway floor rock burst. The method was tested in the field, and the results showed that it could effectively control the deformation of roadway floor and rock burst, guaranteeing the stability of roadway floor. This impact control method for the roadway floor can provide a reference for the prevention and control of roadway rock burst in mines with similar geological conditions.

Analysis of Inducing Factor of Thin Seam Rock Burst in Xinxing Mine

2014 ◽  
Vol 522-524 ◽  
pp. 1371-1376
Author(s):  
Zhu Peng Jin ◽  
Tao Qin ◽  
Zhen Wen Liu
Keyword(s):  
Rock Burst ◽  
Pressure Control ◽  
Hard Coal ◽  
Prevention Focus ◽  
Deep Mining ◽  
Mining Conditions ◽  
Pressure Control System ◽  
Inducing Factors ◽  
Thin Seam ◽  
The Impact

For occurring frequent thin seam rock burst disasters in deep mining stage in Xinxing Mine, through summarizing the mineral basic geological and mining conditions, on this basis, analysing the occurrence characteristics of rock burst with statistical method in Xinxing Mine, analyzing the inducing factors of thin seam rock burst, and through FLAC3D roadways along on 41,051 workface exploitation right beside left stacks of rock burst was simulated, and made a rock burst prevention focus for the impact of land pressure control system provides an effective basis. On thin hard coal burst prevention of important guiding significance.

Mining Method Optimization Based on Fuzzy Comprehensive Evaluation

2012 ◽  
Vol 616-618 ◽  
pp. 365-369
Author(s):  
Qi Feng Guo ◽  
Zhao Cai Zhang ◽  
Zheng Sheng Li ◽  
Kun Liu ◽  
Huan Xin Liu
Keyword(s):  
Capacity Planning ◽  
High Efficiency ◽  
Comprehensive Evaluation ◽  
Fuzzy Optimization ◽  
Production Capacity ◽  
Fuzzy Comprehensive Evaluation ◽  
In Situ Stress ◽  
Gold Mine ◽  
Mining Method ◽  
Deep Mining

According to the 8000t/d production capacity planning and high in-situ stress, high rockburst proneness in deep mining of Sanshandao Gold Mine, three mining methods were compared and analyzed from safety, technical and economic indexes. Fuzzy optimization model was built to select the optimal mining method based on mining indexes quantification and fuzzy analysis of mining indexes. The conclusion shows that Alternate Room-Pillar Mining Method with Ascending Backfill is the optimal mining method to satisfy the safety and high efficiency demand of deep mining in Sanshandao Gold Mine.

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