In the tunnel construction, the hydraulic blasting technology used by the builders has improved the highest energy utilization rate and economic benefits. This is the first time in the construction of highway engineering tunnels in Gansu Province. The installation of the tunnel waterproof board all adopts ultrasonic welding technology, which effectively solves the quality problems of welding and welding penetration of the waterproof board in the past. The on-site waterproof board is laid beautifully and smoothly, and the operability and visual quality have been greatly improved, which effectively prevents The occurrence of tunnel leakage quality accidents saves manpower, improves work efficiency, speeds up construction progress, and effectively controls engineering costs. In the tunnel invert construction, a simple shaped bench is innovated. The bench uses angle steel and waste inner tubes to make a combination of rubber bars, so that the plane position and spacing of the reserved steel bars on both sides of the invert are fixed by the limit grooves to ensure that the two The side reserved steel bars are not offset and misaligned during the concrete pouring process, so as to avoid quality defects such as difficult connection of steel bars, large deviation of the protective layer, and non-straightening of the steel bars in the subsequent second lining construction.

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