OPTIMATION OF THE SELECTION OF LANDSLIDE MITIGATION METHODS IN ARJASA, JEMBER DISTRICT INDONESIA

The methods of handling landslides available are very diverse, so the use of methods that are less suitable will cause the handling of landslides to be less than optimal. Guidelines published by ministry of public work provide guidance on handling landslides with various methods available. The guideline still opens opportunities for errors in choosing the most suitable method. This article describes efforts to optimize the selection of landslide handling methods. The AHP method is used to evaluate the factors that influence the selection of landslide handling methods, both technical and non-technical factors which are considered in the selection. The AHP evaluation results show that the weight of the landslide type criteria has the highest level of importance, which is 0.23 (23%), while the results of the assessment of the weight of each criterion for the landslide handling method produce the first priority sequence used is the method of changing geometry with the weight of 0.394, the second priority of the method of regulating surface water with a weight of 0.251, priority of the third method of retaining wall with a weight of 0.179 and the last priority method of water seepage control with a weight of 0.176.