China unveils the world's first boring and blasting machine (BBM). It claims to boost excavation efficiency in hard rock by 30%.
Scientists in China have developed a machine that can boost the efficiency of excavating extremely hard rocks. Dubbed as the world’s first boring and blasting machine , the machine is expected to solve challenges in large tunnel constructions.
The machine uses completely different methods for drilling and blasting and is claimed to be a boon for water conservancy, mining, railways and highway projects.The machine features two cutter heads and leverages the complementary advantages of each method, improving efficiency while also being environmentally friendly. The BBM has completed trials under three different working conditions, reported SCMP.
The trial results showed that “under extremely hard rock conditions, the efficiency of the hollow cutter head can be increased by 30 per cent after pre-cracking treatment.”“It effectively combines the functions of tunnel boring machines and traditional drilling and blasting methods, featuring multiple excavation modes,” Chen Jiale, a researcher at China Railway Science & Industry Group Corporation and ANI.
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