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China develops world's first tunnel boring and blasting machine
China has unveiled what it says is the world's first tunnel boring and blasting machine, a hybrid system designed to dig through some of the toughest rock formations without the delays caused by switching between different excavation methods. Officials say the new technology could significantly speed up the construction of tunnels for railways, hydropower projects and other major infrastructure.
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oglobo.globo.com
China apresenta primeira máquina do mundo que une perfuração e detonação para escavar túneis; entenda
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scmp.com
China unveils world’s first hybrid boring-and-blasting tunnel machine
Standard tunnel boring machines slow down in extremely hard or fractured mountain rock, which has led to delays in infrastructure projects.
