A Study of Rockburst Hazard Evaluation Method in Coal Mine

Table 1

Statistics of main factors in rockburst mines [13].

Geological factors	Amount of rockburst mines (2008–2013)	Typical examples
Hard and thick roof	48	Dongtan and Baodian coal mines; Liangzhuang, Xiezhuang, and Panxi coal mines; Sanhejian coal mine; number 11 and number 12 coal mines in Pingdingshan; Tangshan coal mine; Junde and Nanshan coal mines; Xinxing coal mine
Overlying strata with large thickness	5	Huafeng coal mine; Qianqiu coal mine; Shijie coal mine; Wanglou coal mine
Hard roof-and-floor	6	Tongjialiang and Xizhouyao coal mines; Huafeng and Suncun coal mines; Hetaoshan coal mine; Yanbei coal mine
Geological structure	38	Laohutai coal mine; Sunjiawan coal mine; Guantai coal mine; Tangshan and Zhaogezhuang coal mines; Panxi coal mine
Great inclined coal seam	3	Huating coal mine; Muchengjian coal mine; Huafeng coal mine
Change of coal thickness	2	Jisan coal mine; Xiezhuang coal mine
Natural earthquake	1	Zhaogezhuang coal mine
Gob-surrounded coal pillar	26	Qianqiu coal mine; Jisan, Dongtan, Baodian, and Jiyi coal mines; Xiezhuang coal mine; Zhuangji coal mine; number 11 coal mine in Pingdingshan; Tangshan and Zhaogezhuang coal mines
Upper coal pillar formed in the mining coal seam group	11	Huafeng coal mine; Tongjialiang and Xizhouyao coal mines; Junde coal mine
Blast-induced vibration	6	Liangzhuang coal mine; Zhaogezhuang coal mine; Nanshan coal mine; Muchengjian coal mine