岩爆防治在大伙房引水隧道中的应用

Application of prevention of rockburst in Dahuofang tunnel

重点研究了在大伙房引水隧道一号支洞所发生岩爆的特征,从包括岩石组合、地应力状况、隧道埋深以及地下水发育特征等因素在内的影响岩爆发生的主要因素的角度,分析了它产生、发展、分布的岩石组成形式和地质构造特征,指出隧道中容易发生岩爆的地段的鉴别特征,着重研究了该地区岩爆在不同构造应力场的作用下,所发生的的力学行为,并由此推断出它可能对隧道施工可能造成的影响,提出了以预防为主、防治结合的行之有效的治理措施。

The paper studies the feature of the rock burst in Dahuofang tunnel and analyses its geological earmarks of generation, evolution and distribution. During the study ,all the factors that may affect the generation of the rock burst have been considered including the rock composition, the mechinics actions, the depth of buried tunnel and the ground water . On the basis of the mechemical properties of rock , it concludes the potential threat of the rock burst to the tunnel construction.