Evaluation method of geological environment bearing capacity of coastal zone

Abstract

The invention discloses an evaluation method of geological environment bearing capacity of a coastal zone. The evaluation method comprises the steps of establishing a coastal zone geological environment bearing capacity evaluation index system, obtaining index weights by using an unstructured triangular fuzzy number weight determination method and the evaluation indexes; and obtaining the geological environment bearing capacity according to the evaluation indexes and the index weights and outputting the geological environment bearing capacity. The unstructured triangular fuzzy number weight determination method in the evaluation method fully considers the importance of each index from the overall aspect during determination of the index weights, then an evaluation judgment matrix is established from three attitudes, i.e., pessimistic, neutral and optimistic attitudes in accordance with dyadic mood operators, the two methods are effectively merged, not only can the logics recognized by experts be satisfied, but also the judgment of decision makers to the importance of micro indexes under three different attitudes, i.e., pessimistic, neutral and optimistic attitudes is comprehensively considered, and the misjudgment of the original evaluation result based on a single attitude can be effectively avoided.

Description

technical field [0001] The invention relates to an evaluation method of the geological environment bearing capacity of the coastal zone, in particular to an evaluation method of the geological environment bearing capacity of the coastal zone using a non-structural triangular fuzzy number fixed weight method. Background technique [0002] In recent years, geological environmental problems such as landslide deformation and collapse in some major coastal estuaries such as the Yellow River Estuary, Laizhou Bay, and the Three Gorges Reservoir area have once attracted the attention of domestic environmental protection agencies, experts and scholars. These coastal and estuary areas generally have problems such as Once geological disasters occur in land reclamation projects, important ports and large-scale water conservancy and hydropower facilities, the consequences will be disastrous. The advancement of industrialization and urbanization and the increasing impact of human activiti...

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Problems solved by technology

[0002] In recent years, geological environmental problems such as landslide deformation and collapse in some major coastal estuaries such as the Yellow River Estuary, Laizhou Bay, and the Three Gorges Reservoir area have once attracted the attention of domestic environmental protection agencies, experts and scholars. These coastal and estuary areas generally have problems such as Land reclamation projects, important ports and large-scale water conservancy and hydropower facilities, once geological disasters occur, the consequences will be disastrous

Among them, the subjective weighting method mainly includes conventional AHP (Analytic Hierarchy Process), expert survey method (Delphi method), ring comparison scoring method, direct scoring method, comparative ranking method and correlation matrix (Gulin method), etc. Due to the conventional subjective evaluation method The AHP method has the characteristics of layering complex problems and quantifying qualitative problems, making it more in line with the actual giant system evaluation, so this method is most widely used; objective weighting methods mainly include entropy value method, principal component analysis method, and mean square error method. method (dispersion method), coefficient of variation method and CRITIC method, etc.; however, due to the poor versatility and accessibility of the objective weighting method, the calculation method is complicated, and the objective weighting method is highly dependent on the data, and the contrast strength of the data , conflict and discreteness requirements are relatively high; therefore, a perfect objective weighting evaluation system has not yet been formed; in the process of ecological environment evaluation, due to the diversification and qualitative of indicators and the difficulty of data acquisition, it directly leads to the objective weighting method. The effect of using it in the ecological environment evaluation process is not good; the above subjective weighting evaluation methods have the disadvantages of decision makers’ single attitude, and they have not realized the shortcomings of considering from the whole to the part

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