Research On Spatial Simulation Method Of Engineering Geologic Evaluation

Engineering geological disaster is a huge challenge for human continual development. In the recent decade, our country has lost beyond 280 billion Yuan due to the suffering and damage of the geological disaster, which not only led to the vital and wealth loss and also the retrograde related social undertaking. We can take countermeasures to avoid or reduce the geological disaster, if only we are conscious about the geological environment got from the scientific evaluation of the engineering geology. Therefore it is the vital factor for the control of the situation and the outcome of engineering geological disaster to have a scientific and efficient evaluation of the engineering geology, which also affects the comprehensive power of our nation.As a key factor for the city planning and civil engineering construction, the engineering evaluation has formed a serious of evaluation methods gradually. At the same time, the GIS technology has expanded and been used in many fields, such as civil construction, economy and military with the full-scale development of GIS itself. During the last decade, most cities of our country have constructed the engineering database which server for the management and research of the geotechnical engineering reconnaissance results, but these database have not been applied in the field of the evaluation and research for the geological engineering. This paper just aims at filling this blankness, that is, focuses on the researching of how to build the special evaluation method of the engineering geology based on the GIS platform.The research contents and the innovations of this paper are listed as below:Firstly, this paper first introduces the conception of the Standardized Divisory Stratums (SDS). Lots of basic works, such as collection of amounts of engineering geological information and the common evaluative results analysis, are needed for the construction of the SDS. This paper takes the Qingdao city as a example and collects the geological data of the seven districts of Qingdao (1316.27km2 in land, 374.40 km2 in Jiaozhou Bay). According to the analysis of these data samples, the SDS is settled down according to different stratums characters. The SDS is necessary for the data abstraction and automatic input for the system database.Secondly, based on the SDS, the city main engineering geological disaster evaluation methods are developed, added of the practical needs. The accordant calculation model are developed and then embedded in the spatial engineering geological evaluation system to form the entire SDSS. It is available to input and analysis and evaluate the engineering data automatically under utilization of the implement of this system.Thirdly, this paper aims at building the countermeasure optimized model to prevent the engineering construction from geological disaster damage, or try to avoid the place, where the geological disasters tend to happen, to reduce the expensive expense needed for counteracting the dangerous geological situation, added the utilization of the GIS spatial implements.Taking the seven districts as example, this paper finally builds the engineering geological evaluation spatial simulation information system to show the applicability of these methods, models mentioned above.