A protective seam with nearly whole rock mining technology for controlling coal and gas outburst hazards: a case study

被引：37

作者：

Sun, Qiang ^{[1
]}

Zhang, Jixiong ^{[1
,2
]}

Zhang, Qiang ^{[1
]}

Yin, Wei ^{[1
]}

Germain, Deon ^{[1
,3
]}

机构：

[1] CUMT, Sch Mines, Xuzhou 221116, Peoples R China

[2] CUMT, State Key Lab Coal Resources & Safe Min, Xuzhou 221116, Peoples R China

[3] Univ Mahajanga, Fac Sci, 401 Reg Boeny, Mahajanga, Madagascar

来源：

NATURAL HAZARDS | 2016年 / 84卷 / 03期

关键词：

Protective seam with nearly whole rock; Gas outburst hazard; Gas control; Gas drainage and utilization; MINES; DRAINAGE;

D O I：

10.1007/s11069-016-2512-9

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Coal seams with low gas permeability and high gas outburst hazards are becoming more serious as coal mines extend deeper, but there are no appropriate protective coal seams for this kind of coal seam in China. In this paper, mining technology using a protective seam with nearly whole rock (PSNWR) is used to improve gas drainage and ensure safety during production. The characteristics of the distribution and occurrence of PSNWRs and their mechanical properties are analyzed. A theoretical mechanics model and three-dimensional numerical model are established to study the controlling effect of PSNWR mining on pressure-relief gas drainage. In this context, the mining process, system and gas extraction design for PSNWRs are introduced. The results for Pingdingshan No. 12 Coal Mine show that mining with a PSNWR 2.0 m thick can effectively reduce the danger of coal and gas outbursts and improve gas drainage and utilization. The gas drainage rates are > 80 %, which significantly increases the social, economic and environmental benefits of Pingdingshan No. 12 Coal Mine.

引用

页码：1793 / 1806

页数：14

共 30 条

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