-from Authors ABSTRACT: An empirical method using Rock Mass Rating (RMR) and Slope Mass Rating (SMR) has been applied based on field observations and measurements, and laboratory tests to estimate the strength of rock mass and to assess the stability of rock masses on slopes forming the edges of Najran-Abha road.
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The combination of Q-logging and NMT reinforcement techniques is ideally suited to tunnels driven in a wide range of jointed and faulted rocks with compressive strengths ranging from about 3-300 MPa.
Applying the Q-system as a basis for selecting NMT results in optimal tunnel design, with the permanent support probably more closely related to the tunnel's reinforcement needs than other methods.
The slope mass rating is the most comprehensive and widely used technique for rock slope assessment.
In the southern area of Saudi Arabia, road and highway networks play a vital role in remote areas for transportation, public network and all kinds of socioeconomic activities.
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