Investigation of active tectonic evidence and characteristics of Kushk fault zone and vulnerability of rural settlements, Qazvin province

In this paper, the activity of Kushk fault has been investigated through field observations of landslides related to the activity of Kushk fault and other evidences of its activity and the location of rural settlements in the study area of ​​Kushk fault has been analyzed. The study area is located in Qazvin province and in the Alborz structural zone and along the Kushk fault between the coordinates of longitude 50.25 to 50.50. In the selected sections to study the fault activity, evidence of crushing rocks, numerous springs and many old and new landslides were observed, which characterize the fault activity. According to field studies and observations, the fault zone of Kushk fault in the studied sections was measured at 260 m on both sides of the fault. Since there are a number of villages in the area of ​​Kushk fault, among which the whole physical texture of Aliabad village is located on the fault zone and part of Kushk, Zarabad, Garmarud Bala, Simiardasht and Hassanabad villages are located on the fault rupture zone. For the village of Aliabad, whose entire physical texture is located on the Kushk fault, and also for the villages of Kushk, Zarabad, Garmarud Bala, Simiardasht and Hassanabad, part of whose physical texture is located on the Kushk fault zone, to prevent death and Death due to surface rupture during an earthquake or landslide due to fault activity is necessary in order to save human lives, move the village to another point or correct the future development direction of the village outside the rupture of the pavilion fault. For this purpose, in preparing or reviewing the master plan of these villages, the shear zone designated for Kushk fault can be considered as a criterion for future development of villages and in determining the future development of these villages, new construction can be prohibited on Kushk fault shear zone. And be included in the village master plan