爆破开挖对岩溶地层的破坏机理浅析

Elementary Analysis on Destroying Mechanism of Blasting Excavation on Karst Stratum

在岩溶地区隧道开挖的过程中,爆破振动有可能会造成溶洞的坍塌,溶洞的坍塌又会对隧道的稳定性造成影响。爆破亦会使隧道与临近溶洞之间产生贯通裂隙,从而导致岩溶涌水,影响施工质量和进度。探讨和研究爆破开挖对岩溶地层产生的损伤和破坏机理,并对爆炸应力波在岩溶地层中的传播机理及岩溶地层爆破振动致塌机制进行研究。

In the process of tunnel excavation in karst region, the blasting vibration possibly causes the collapse of karst cave, which will also cause the influence on the tunnel stability. The blasting will also cause the penetrating cracks between tunnel and neighbor karst cave so as to cause the karst water and influence the construction quality and schedule. The article discusses and studies the damage and destroying mechanism of blasting excavation on the karst stratum, and studies the transmission mechanism of blasting stress in karst stratum and the collapse system of blasting vibration to the karst stratum.