构造应力下坚硬底板冲击地压机理分析

在存在向斜地质构造的区域进行煤炭开采,水平构造应力往往远超过垂直应力,并对底板型冲击地压的发生起着至关重要的作用.坚硬底板由于其强度高,抗变形能力强,易于积聚大量的弹性弯曲变形能.构造应力的作用为冲击地压的发生提供了必要的力源条件,而坚硬底板的存在则保证了大量弹性变形能的储存,二者的结合促使发生底鼓型冲击地压.

Analysis on mechanics of rock burst in hard floor under tectonic stress

When exploiting coal in zones where syncline geological structure exists,the horizontal tectonic stress level often far exceeds the vertical stress,and plays a critical role in occurrence of rockburst in floor.For the hard floor,because of its high strength and high resistance to deformation,it is easy to accumulate a lot of elastic bending deformation energy.Tectonic stress provides the necessary power source for the occurrence of rockburst,and the hard floor guarantees the store of a great deal of elastic...