Assessment Of Geological Environmental Risk In Economics

The contradiction between citizen's demands for work and living environment and increasingly geological environment frailty in urban is becoming increasingly evident with the accelerations of urbanization course and quantities of city and population. A risk management mechanism should be introduced to make the protection and management of geological environment more effectively. Therefore, the risk assessment of geological environment must be carried out firstly. It has significant theory exploration value and practical application meaning.The risk assessment of geological environment has been studied abroad, but is immature. Some scholars research on"Risk Assessment"of geological hazards in China, but generally speaking, most of which are belong to"Harm Assessment", and the real meaning study in risk assessment is little, especially in"Economics evaluation of geological environment risk"containing loss of economic or life.The paper researches on several aspects: the geological environment characteristics and the relation between it and geological environment quality; the relation between geological environment value and risk; assessment method of value loss for geological environment function, etc. The article puts forward definition of geological environment risk, as well as theory and method of economics evaluation of geological environment risk. This article clarifies theory and method of economics evaluation in risks of underground water pollution, underground water adjustment and deposit, landslide, debris flow and ground cave-in from aspects of economics evaluation process of geological environment risk, harm or risk recognition, harm evaluating calculation of geological environment accident, risk judgment and control,as by use of examples about economics evaluation of geological environment risk in Shijiazhuang, Beijing, Tianshui and so on. Major innovational ideas and views are as follows:1.The view that geological environment source has little worth is wrong, which is bad for construction of resource-saving and environmentally-friendly society. The geological environment source is different with general environment source, which doesn't only have use value, but has value. The value consists of general labor value condensated in it and nature value formed in nature process or general value. Adopting the methods of"source base price+ compensatory value"and"cost + profit + compensatory value"to calculate it.2.Definitely elaborating geological environment and its value characters for the first time. It is believed that geological environment values are different in the same place if which is used for different functions. The geological environment suitability or quality is connected with land use types. the poorer the suitability or quality, the lower the value, and vice versa.3.Putting forward the value loss of geological environment function can be evaluated by"Recovery cost, Protection expenditure, Market value, Value-concentration loss rate, Opportunity cost"and so on, and also using examples to explain methods and processes of geological environment value loss caused by underground water pollution, landslide, debris flow and ground cave-in.4.Illustrating the relation between geological environment value and geological environment risk for the fist time. It is considered that there is the inverse relation between them on the premise of land use types are the same. That is to say, geological environment risk is lower in the conditions of better suitability and quality, higher capacity and bigger capability, and vice versa.5.Advancing new evaluation or calculation methods of accidents risk level and probability for underground water, collapse, landslide, debris flow and karst collapse in accordance with different of geological environment and accident occur mechanism, law and character, and using practical examples to illustrate methods, steps and processes of risk assessment for hazards as above stated.