Evaluation model of anti sandstorm effect of Saihan dam based on TOPSIS good and bad solution distance method

Abstract

This paper starts from the conditions of sandstorm formation, collected the relevant data of Beijing's air quality, strong
wind weather, precipitation and other indicators in recent years, strong wind, dust volume, air state, water content, vegetation
abundance, and environmental damage degree in surrounding areas were selected as the judging indexes, after data preprocessing,
a factor analysis model was established to extract three comprehensive indicators: strong wind weather, air quality and dust
volume, the comprehensive index was added into TOPSIS model to calculate the score. Finally, by comparing the score, the effect
of the ecological environment restoration of Saihan dam on the sand storm resistance in Beijing was quantitatively obtained.