Mountains in the Chaning World, Mountains in the Chaning World

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Landslide and rockfall in the Tange Sarhe- Nikshahr transit route, in the Sistan and Baluchistan province, Iran
Jafar Rahnamarad

Last modified: 2017-06-26


The aim of this study is to evaluate the main causes of landslides and rockfalls in the Tange Sarhe- Nikshahr transit route in southern Iran. The transit route connects the Chabahar port in the Oman see to the main cities in northeastern Iran, and to the neighboring countries in Central Asia. The region of Tange-Sarhe is located in the internal Makran zone, between the Bashagard drifts in the north and Qasr-e Qand in the south and southeast Iran. The mountainous slopes of Tnage Sarhe-Nikshahr road are very instable. In this study, all factors affecting the slope instability, particularly slope surface water are investigated. The areas and the rock units susceptible to incidents of instability are identified, and it's safety factors are presented using the dips and rock Pack III software. The results show that the geological structure, rock properties, formation type, slope angle and height, the amount of slope load and atmospheric precipitation, are the main causes of instability in the region. Historical events have shown that each of the mentioned factors was the most important factor in a certain situation.

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