爆炸应力波在层状岩体中的传播与衰减

针对层状岩体的特征,研究爆炸应力波中的平面波在层状岩体界面上的透、反射关系以及球面波在各岩层中的衰减特性,分析爆炸应力波在层状岩体中的传播和衰减规律.研究表明,爆炸应力波在各层岩体中随传播距离的增加而衰减,衰减速度分别与各层岩体的衰减系数有关;爆炸应力波在经过不同岩层界面时的强度增减与层面两侧岩体的阻抗有关.在相同传播距离内,层数较多、软硬相间的层状岩体对爆炸应力波有更大的衰减.当爆炸应力波经层状岩体传播后作用于地下结构时,层状岩体能更好地保护其下方的结构.

The Propagation and Attenuation of the Explosive Stress Wave in Layered Rock Mass

Aimed at the overlying strata are most of layered rock mass,the propagation,reflection and the attenuation behaviors of the explosive stress wave in the interface of layered rock mass are discussed,and analyze the law of propagation and attenuation of the explosive stress wave in layered rock mass.The results indicate that the explosive stress wave will decline with the increasing of the propagation distance,and the decay velocity is related to the decay coefficient in different rock mass.The intensity of the explosive stress wave,which passes through the interface of different rock seams,is related to the resistance of the layered rock mass in both sides.The more the seams of rock mass are,the layered rock with soft and hard seams has more contributions to the decay of the explosive stress wave in the same propagation distance.The layered rock mass can protect the underground structures more effectively,which the explosive stress wave acts on after propagation passing by the layered rock.So the mining space has its own natural advantages to wartime application.