• R. G. Vagal
• A.R. Katti (Ph.D)

The Mumbai-Pune Expressway (Maharashtra), officially known as the ‘Yashwantrao Chavan Mumbai Pune Expressway’ is India's first six-lane concrete, high-speed, access controlled tolled expressway. It spans a distance of 94.5 km. The expressway starts at Kalamboli (near Panvel), and ends at Dehu Rd. (near Pune). It cleaves through the scenic Sahyadri mountain ranges through passes and tunnels. The expressway handles about 43,000 (passenger carrying units) PCUs daily and is designed to handle up to 1,000,000 PCUs. The expressway experienced problems with rock fall. The present study aims to carry out Stability analysis of rock slope at Adoshi and Khandala including suggesting the remedial measures required if any. A reconnaissance inventory carried out by the Central Road Research Institute, New Delhi, India revealed that about 90% of the slope failures. The Rock fall and debris flow are the predominant problems at Adoshi and Khandala location. The size of the rock blocks varies from a few centimeters to a meter and some time even larger in diameter. The hill slope geometry at this location is such that rock blocks fall directly onto the expressway. This direct fall makes the impact more dangerous and more potentially fatal when rock blocks impact a running vehicle. Such incidences are particularly frequent during the rainy season. Theses landslides have caused tremendous loss of human life and several time blocked the vehicular traffic on expressway. The purpose of this study is to map the entire area and analyse the reason for such rock falls & landslides and propose remedial measures. The design of these remedial measures would not be the scope of this study and could be taken up as future scope of work. The comprehensive study is presented in this paper.

Bore log, rock quality designation (RQD), weighted jointing density (WJD), Rock Mass Index (RMi).

"STABILITY ANALYSIS OF ROCK SLOPE AT ADOSHI AND KHANDALA ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.733-739, August-2018, Available :http://www.jetir.org/papers/JETIRA006129.pdf

"STABILITY ANALYSIS OF ROCK SLOPE AT ADOSHI AND KHANDALA ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp733-739, August-2018, Available at : http://www.jetir.org/papers/JETIRA006129.pdf