The effect of a tectonic stress field on coal and gas outbursts.
The effect of a tectonic stress field on coal and gas outbursts.
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DOI：
10.1155/2014/813063
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发表时间：
2014
影响因子：
--
通讯作者：
Cheng Y
中科院分区：
文献类型：
--
作者：
An F;Cheng Y
煤与瓦斯突出一直是煤炭资源安全高效开采的严重威胁。在野外实践中，地应力（尤其是构造应力）对突出的发生和分布有显著的影响。建立了考虑瓦斯影响的数值模型，从应力条件的角度分析了突出危险性。为了评价突出倾向，研究了突出起爆过程中采出煤体积累的势能。结果表明：瓦斯压力和吸附气体的强度降低加剧了煤体的破坏，构造改变的地应力会影响塑性区分布；利用突出起爆势能与能量消耗之比来表征突出倾向。瓦斯和构造应力的增加使势能聚集比增大，突出倾向增大。突出起爆势能的组成表明，构造应力作用增加了弹性能的比重。从应力条件的角度推导出弹性能增大是构造区突出危险性增大的原因。
Coal and gas outbursts have always been a serious threat to the safe and efficient mining of coal resources. Ground stress (especially the tectonic stress) has a notable effect on the occurrence and distribution of outbursts in the field practice. A numerical model considering the effect of coal gas was established to analyze the outburst danger from the perspective of stress conditions. To evaluate the outburst tendency, the potential energy of yielded coal mass accumulated during an outburst initiation was studied. The results showed that the gas pressure and the strength reduction from the adsorbed gas aggravated the coal mass failure and the ground stress altered by tectonics would affect the plastic zone distribution. To demonstrate the outburst tendency, the ratio of potential energy for the outburst initiation and the energy consumption was used. Increase of coal gas and tectonic stress could enhance the potential energy accumulation ratio, meaning larger outburst tendency. The component of potential energy for outburst initiation indicated that the proportion of elastic energy was increased due to tectonic stress. The elastic energy increase is deduced as the cause for a greater outburst danger in a tectonic area from the perspective of stress conditions.
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DOI：
10.1016/0148-9062(78)91223-8
发表时间：
1978-01-01
影响因子：
7.2
作者：
HAIMSON, BC
通讯作者：
HAIMSON, BC
DOI：
10.1002/nag.315
发表时间：
2003-11-01
影响因子：
4
作者：
Alonso, E;Alejano, LR;Carranza-Torres, C
通讯作者：
Carranza-Torres, C
影响因子：
5.6
作者：
Beamish, BB;Crosdale, PJ
通讯作者：
Crosdale, PJ
影响因子：
3.9
作者：
Cui, Xiaojun;Bustin, R. Marc;Chikatamarla, Laxmi
通讯作者：
Chikatamarla, Laxmi
影响因子：
5.6
作者：
Cao, YX;He, DD;Glick, DC
通讯作者：
Glick, DC