理论分析表明，煤柱塑性区宽度不仅与采深、采厚有关，而且也同采出率有关。
Theoretical analysis shows that coal pillars plastic zone width not only with mining depth, mining height, but with the recovery rate.
综述了国内外喷注型浆体防煤自燃技术的现状和发展趋势，通过实验，得出塑性石膏浆的配制方案和堵漏风效果。
Present situation and development tendency of technical preventing coal spontaneous combustion adopted with plasticity slurry that can spray and pour domestic and international are discussed.
通过地震波的衰减规律与塑性应变变化的比较可见，能量的消耗除了几何扩展衰减外，煤岩体的塑性变形方面也起了一定的作用。
Through the comparison of seismic wave attenuation and plastic strain, except for geometrical attenuation, the plastic deformation of coal and rocks is also contributing to energy consumption.
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