Geotechnical- Environmental Study of Landslide in West of Gateh-kash Village in Kojour Area, Noshahr

Subject Areas :

Reza Khajevand ¹ (دانش آموخته کارشناسی ارشد زمین‌شناسی مهندسی، دانشکده علوم زمین، دانشگاه دامغان)

Received: 2016-12-05 Accepted : 2016-12-05 Published : 2016-02-20

Keywords: Kojour, Land slide, Gateh Kash, slope instability,

Abstract :

Kojour mountainous region, located in Mazandaran province due to high altitude, existence marl, lay and shale layers, high seismic activity, dominantly Mountainous topography and high rainfall; available appropriate condition for land slide. Pathway as for geological condition and climate is capable for mass wasting. Experience of many slides after operation subsidiary this subject. In this paper reason of occurrence land slide on 27th kilometer of Kojour pathway, in west of Gateh Kash village survey and studied. For this reason, beneficial of field revisions, study geological maps, aerial photograph and satellite images; basic ingredient in instability at slightly zone survey and studied. According to study this slide is transitional slide and seven factor include lithology, topography, distance of fault, engineering geology of sliding mass, hydrology and hydrogeology, climate and land usage effective and essential in occurrence this slide determine, recognize and analyzed. Obtained safety factor during stability analysis by limit equilibrium indicating slope stability in present condition, but changing in stability effective factor, again sliding is probable. During surveying parts by high potential to sliding recognize, hence for appropriate stabilization operation for hazardous zone offering. Quantities assessment conclusion of environmental effective and weighting on affected parameter of slide with cluster analysis, showed negative impact on environment and meaningful relationship between this parameter.