Based On Extension Evaluation Method Of Hydropower Engineering Geological Evaluation Of Watershed Planning Stage

Engineering geological conditions are planning stage base station needs to know the geological conditions, the quality of engineering geological conditions relating to hydropower development planning stage sooner or later. Kat song belongs too Dulong tributary, Nitto song is guitar music too tributary, the initial planning stage Jitai Basin song five, four development programs, development programs are low dam diversion type development, a total of eight cascade hydropower stations. However, according to the site reconnaissance and remote sensing interpretation results show that the presence of engineering geological evaluation Jitai Basin song the following questions:(1) Project Area complex topography and high mountains and steep, transportation is very inconvenient, only Gada, Long wins, Kyrgyzstan and some other areas too road traffic, most of the remaining areas without road access;(2) in the plateau, alpine climate and subtropical monsoon climate junction, humid climate, rainfall, combined with the project area is in the mountain range in Southeastern Interchange, more active tectonic activity, make the area an earthquake and landslides, avalanches, landslides and other natural disasters;(3) the project belonged to the Plateau sector, the lateral slip intermittent uplift and a large area of the block and the block boundary fault strike-slip displacement violent activities, so that eco-geological conditions of the area more fragile, more difficult to study geological evaluation; in some areas(4) in the study area through the national nature reserves, forests are widespread, and conventional survey methods can not well implemented, only Ji Gong Teng song too rung by human bad luck to rig plant site to carry out drilling, other Cascade is not suitable to carry out drilling and other projects;(5) a long-term project area in sparsely populated areas, and for the tough conditions, research materials research in the area is relatively lacking;(6) the usual engineering geological evaluation mostly through a comprehensive detailed field investigation, expert evaluation by a comprehensive qualitative assessment, but a larger factor of human disturbance; quantitative analysis is mainly used for single geological factors evaluation, and synthesis is poor.Due to these problems, the engineering geological evaluation of the planning phase of the region’s hydropower is relatively complex. Therefore, the need to explore new ways to complete the evaluation of Hydropower Cascade Development. Dissertation, data analysis, remote sensing interpretation, validation site visit, the last indoor amendment process. According to the results of remote sensing interpretation and field investigation, engineering geological conditions for the difference segment, combined with the characteristics of qualitative evaluation engineering layout, extract key factors to establish evaluation index system. According to Factors Affecting the planning stage and hydropower engineering geological conditions site survey and remote sensing interpretation results, we extract an index of topography, lithology, geological structure, poor geological and hydrogeological, secondary indicators as slope, aspect, elevation, vegetation index, gully density, saturated uniaxial compressive strength, rock integrity coefficient, fault distance, extend the length of the fault, mudslides, the accumulation of body collapse, topography, humidity and rainfall, for the dam, and the water line site factors the different weights, the selected indicators are inconsistent, and the site where the dam is calculated the same indicators, water diversion route is selected topography, lithology, geological structure and good body, each of these three fields area evaluation model, and select Gada reconnaissance point as the detailed calculation example, multi-level extension evaluationMultilevel Extension Assessment consists of three parts: The first part is to build evaluation index system, different factors for each level of the field area, namely the establishment of evaluation index, based on characteristics of the object, the paper Gada dam site, the site, water line were established evaluation; the second part is to establish target weight, weight index weight article mainly uses the Delphi method and AHP are two ways to calculate the index weight, wherein the Delphi method, also known as expert analysis, namely through certain Information on the planning stage of the project geological system station in each index weights independent opinions, and appropriately treated with statistics; whereas AHP law to go through the "build a hierarchical model- construct judgment matrix- single-level sorting and consistency check- hierarchy total Sort and consistency check " and other steps to establish the calculated weight; the third part is performed extension comprehensive evaluation to extenics as the core, through the concept and content of the analyte element theory and correlation functions, establishing extension element and classical field and section domain, calculate correlation, according to the final levels relative to the target level of impact level, multi-level extension evaluation.