Study On The Influencing Factors Of Landslide Risk Assessment Results In Liu Ba

The influencing factors of landslide risk assessment results are the basis of the ev aluation results are reasonable and accurate. To 162 landslide hazard informations in Li uba as the basis, from the perspective of Liuba domain considering, exploration the inf luencing factors including evaluation methods, the number of factors, the number of ca lculation units etc on the effect of landslide risk assessment results. The main results a nd conclusions are as follows:(1) Limited the number of factors(10) and calculation units(2164575), using the Information Model, Analytic Hierarchy Process two evaluation methods conducted lands lide risk assessment in the research area. The partition unit number difference the mini mum is 22647 and the maximum is 32788, the partition area difference the minimum is 20.3823km2 and the maximum is 29.5092km2. The partition unit number and the pa rtition area change obvious relatively, the value discreteness is higher consistency is lo wer, evaluation methods have less influence on the evaluation results. The reason is th at the evaluation method decides the calculation principle and process, different evaluat ion methods have different calculation principle and process.(2) Limited evaluation methods(Information Model) and calculation units(2164575), using four and seven two numbers of factors conducted landslide risk assessment i n the research area. The partition unit number difference the minimum is 21942 and t he maximum is 112075, the partition area difference the minimum is 19.7478km2 and the maximum is 100.8675km2. The partition unit number and the partition area change obvious, the value discreteness is high consistency is low, the number of factors have more influence on the evaluation results. The reason is that different number of factor s in landslide risk assessment is closely related to the weight values of each factor an d the weights of the total information in the research area.(3) Limited evaluation methods(Information Model) and the number of factors(10), using 540562,134712 two numbers of calculation units conducted landslide risk assessment in the research area. The partition unit number difference the minimum is 60155 and the maximum is 191730, the partition area difference the minimum is 6.03km2 and the maximum is 15.3792km2. The partition unit number and the partition area cha nge little, the value discreteness is low consistency is high, the number of calculation units have little influence on the evaluation results. The reason is that the number of c alculation units affects the size of the evaluation unit and information value of each ev aluation factor type.(4) The landslide density of high- risk area AHP is 3.40/10km2, information model is 3.88/10km2, it is known that the evaluation results of Information Model is superio r to the Analytic Hierarchy Process; Four evaluation factors, the landslide density of hi gh-risk area is 3.84/10km2, seven evaluation factors, the landslide density of high-risk area is 4.01/10km2, it is known that evaluation factors add gradually, reduce the uncert ainty of evaluation results to a certain extent; 540562 calculation units, the landslide d ensity of high- risk area is 3.99/10km2, 134712 calculation units, the landslide density o f high-risk area is 3.94/10km2, it is known that within a certain range properly contrac ted the calculation units can improve the accuracy of the evaluation results.