complex formation with interbedding of soft and hard rocks

deeply buried HJ composite soft rocks

interbedding of soft and hard rocks

red and soft rocks

SATURATED SOFT ROCKS

slope with soft and hard rocks

soft and broken surrounding rocks

Soft and weak surrounding rocks

soft surounding rocks

Soft surrounding rocks

SPECIAL SOFT ROCKS

supporting for soft rocks

Tunnels in soft rocks

Very soft rocks

water-saturated soft rocks

a soft point

alliance soft power

Acute soft issue injury