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At a construction site, a 10-meter-deep underground garage was to be dug on the rock. Due to the proximity to nearby residential buildings, the use of explosives for blasting was prohibited. In the beginning, the surface rocks were not particularly hard and could be broken with hydraulic breakers, but when the excavation reached a depth of more than 4 meters, they could not be broken, and the construction progress was very slow. The construction party found us and used two PL1000L hydraulic rock drills and splitters for hard rock excavation operations. Compared with the original hydraulic breakers, the efficiency was increased by 3 times, which greatly improved the construction progress.
