Sensitivity And Security System Of Highway Tunnel Construction On The Ecological Environment

The aggravation of the global environmental problems and crisis causes ecological security to be concerned by the countries all around the world as a non-traditional security as military affairs security and national defense security which are different from traditional securities. Currently, the most concerned ecological security problems, as flood-water logging disaster ,and sands storm etc. belong to regional scale, and the ecological security situation in some regions of China has been destroyed and even damaged the basis for social economy continuous development .Therefore, regional ecological security problem has been raised to the height of deciding regional development and nation security.During tunnel construction, the ground water of ecological environment might be changed, based on the ecological effect excited by groundwater of home and abroad, according to the characteristics of the impact on the ecological effect by tunnel karst, searches the reasons of the negative impact which the tunnel karst may do to the ecological environment and presents the research on the principles of the comprehensive evaluation establishment about the impact on the ecological effect by tunnel karst.At the same time, the factors that affect the super gene eco-environment are discussed. Take the ecological security theory as the foundation, according to P-S-R indicator system model to establish the hierarchy model of the comprehensive evaluation system, and to present the evaluation index of every class. Under constructing the judging matrix and calculating every index' s weight, the functions have been built for the degree of subordination of the bottom indexes, and the evaluation thresholds. No.1 Huashi tunnel is an example of the ecological security assessment system to verify.