Design charts for rock-cut slopes along motorways in Southern Saudi Arabia

الملخص EN

Thi s paper describes a new set of design charts which have been compiled to asxist in the pr eliminary analysis of excavated slopes in Saudi Arabia .

Data for the charts were collected from Al -Dilaa and Al-Juwah descents.

Both st abl e and unstable slopes were assessed uliliz ing rock mass classification systems .

basic mapping, and index tests.

so that the basic geo technical features of the stable and unstable rock masses could be defined .

Furthermore.

dale were supplemented by a study of the stability of slopes tog ether with the remedial and support measures.

The parameter known as volumetric joint co unt (Jv) is found to be se nsitive to the performance of slopes in hard Saudi Arabian rocks.

Correl ation with either overall slope height or overall slope angle provides useful design charts for roads cuts .

The charts could be zoned .

with each zone being ascribed a likely combination of support measures .

Furthermore .

it is also suggested that the constructed charts could provide qui ck assessment 10 the design .

con struction .

maintenance and safety requirements of rock slopes excavated in the mountainous terrain o f Saudi Arabia along the Red Sea .