coarse-grained soil with weak rock
High slope of weak rock
Loess and Weak Rock highway Tunnel
piles embedded in weak rock
red layered weak rock filling
red layered weak rock fillings
socketed pile in weak rock
soft and weak rock formation
Soft and weak rock mass
WEAK ROCK
软质岩石
软岩
软弱岩体
软弱围岩
脆弱岩石
软弱岩石
软弱夹层