坚硬岩基础定位爆破与液压胀裂联合开挖施工技术

Construction Technology of Combined Excavation of Hard Rock Foundation by Positioning Blasting and Hydraulic Fracturing

坚硬岩基础的开挖,采用定位爆破和液压胀裂联合开挖技术,克服了坚硬岩石基础开挖速度慢,基础超挖严重的施工难题;同时减少了对持力层岩石的扰动,降低了超挖回填量,实现了坚硬岩基础开挖施工过程的绿色、环保和节能。

In the excavation of hard rock foundation,the combined excavation technology of location blasting and hydraulic fracturing is adopted to overcome the difficult construction problems of hard rock foundation with slow excavation speed and serious foundation overexcavation.At the same time,it reduces the disturbance to the rock in the bearing layer,reduces the amount of overexcavated backfill,and realizes the green,environmental protection and energy saving during the excavation and construction of hard rock foundation.