Broken rock mass

broken rock mass environment

BROKEN ROCK MASS STRENGTH

over-broken rock mass

anchorage of discontinuous jointed rock mass

COLUMNAR JOINTED ROCK MASS

discrete jointed rock mass

heterogeneous jointed rock mass

intermittent jointed rock mass

Intermittently Jointed Rock Mass

Jointed rock mass

jointed rock-mass

three-dimensional jointed rock mass

blasting rock-broken

broken coal and rock mass

BROKEN ROCK

Broken rock element

broken rock environment

BROKEN ROCK ZONE