A SLOP RISK COMPREHENSIVE ASSESSMENT METHOD BASED ON SLOPE FAILURES FORMS

摘要

#$%^&*AU2020100405A420200430.pdf#####Abstract The invention relates to the field of slope stability and risk assessment, specifically relating to a slop risk comprehensive assessment method based on slope failures forms comprising, in accordance with statistical characteristics of cohesion c and internal friction angles 9 , generating n groups of combined values randomly conforming to statistical characteristics denoted as{ci, cpit)" ;getting minimum safety coefficient Fsg of the slope for the combined values in group i ; analysing the sliding distance dRi and influential distance di of the slope under combined values of group i by smooth particle hydrodynamics method; letting i = i+1 and repeating previous two steps to obtain the minimum safety coefficient, the sliding distance and influential distance under all combined values; averaging above indexes to obtain average safety coefficient, average sliding distance and average influential distance respectively; calculating normalized sliding distance and influential distance according to the location of structures in top and toe of the slop and, along with average safety coefficient, assessing the risk of slop comprehensively. The invention introduces smooth particle hydrodynamics method, employs sliding distance and influential distance, and combines limit equilibrium method to realize more visual and reasonable assessment of the slope stability and risk. 1DRAWINGS Step 1.Generating n groups of combined values {cq, rpi}" of cohesion c and internal friction angles 9 randomly conforming to statistical characteristics; Step 2.Calculating the minimum safety coefficient Fsi of the slope for the combined values in group i; / Step 3.For combined values of group i, calculating the deformation form after slop failures, and further getting the sliding distance dRi and influential distance d, after slope failures; Step 4.For combined values in other groups, repeating previous two steps to obtain the minimum safety coefficient {Fsi}", the sliding distance {dRi =1 and influential distance{d 1,In, of the slope; Step 5.Averaging above three indexes to obtain average safety coefficient Fsm , average sliding distancedRm and average influential distance d1m; Step 6.Calculating normalized sliding distance d *Rm and normalized influential distance d Im and, along with average safety coefficient Fsm assessing the risk of slop comprehensively. FIG. 1 1