Nov yog ib daim vis dis aus ntawm peb cov neeg siv khoom hauv Chishui, Guizhou, siv peb 40 cubic meter robotic ntub shotcrete tshuab rau qhov kev pab txhawb nqa. Lawv yav dhau los tau siv lub tshuab tua hluav taws ntub dej, tab sis nws tau hnav hnyav heev. Lawv txiav txim siab xaiv peb lub tshuab tshiab, uas txhim kho kev tsim kho kom zoo dua li 50%.
