【作者】 彭立圣；

【导师】 牟瑞芳；

【作者基本信息】 西南交通大学 ， 环境工程， 2007， 硕士

【摘要】 随着西部大开发的推进，由于人类对地质资源的过度需求和不合理的开发活动，造成人类工程建设与地质环境之间的矛盾将会日益尖锐，各种环境地质问题将更趋严重。所以，必须开展地质环境研究，探索出人类工程建设与地质环境相互协调的可持续发展对策。拟建的大河坝水电站位于四川省巴中市通江县境内，是铁溪河流域大型水电工程之一。大河坝水电站坝址控制流域面积较为广大，库区地质构造复杂，各种地质现象发育。岩体物理力学性质较差，风化和水土流失强烈。其施工及蓄水过程中会产生一系列的问题，导致库区环境地质的变更。本文通过对环境地质概念的辨析，对大河坝水电站库区踏勘所得的地质资料和历史资料进行了整理分析，阐述了大河坝水电站库坝区特别是库区的基本地质特征，着重分析了库区的环境地质问题，包括原生地质环境及次生地质环境，对库区的物理地质现象如滑坡、泥石流等做了简单的论述分析，并简单预测了库区可能诱发地震的概率。对施工过程中岸坡的稳定性、建设材料的开采、道路的改建、库区移民及城乡建设问题等做了简单的分析，并提出相应的建议措施。最后运用灰色聚类法对库区环境地质质量进行了分区，计算了库区各单元所属的灰度。环境地质质量较差的单元主要处于田坝滑坡一带，是库区环境地质研究的重要部位，建议加强对该段的勘测，并采取相宜的处理措施，以保证水电站的安全运营。更多还原

【Abstract】 With the promotion of the west development, the contradiction between the construction of human and the geological environment will be increasingly sharp-pointed, and all kinds of environmental geological problems will tend to more serious because of excessive demand of geological resources and unreasonable exploitation. As a result, it is very indispensable to carry out the evaluation of geological disaster of land for construction, think out a sustainable development countermeasure between the mankind construction and the geological environment.Daheba Hydro Power Station, located at Tongjiang county of Bazhong prefecture in Sichuan province, is one of the important hydraulic engineering.Daheba Hydro Power Station’s controling the river valley area is large, influence is great, geology structure of the junction area is complex, various geology phenomenon develop. The rock physics mechanics property is bad, weathering and the soil erosion are mightiness. Its construction and retaining water process will produce a series of problem which will cause the change of environmental geology in junction area. This text analyzes the concept of the environment geology, settle the geology data by survey and the history data of junction area of Hydro Power Station. elaborate the basic geology characteristic of dam area especially junction area, analyze the problem of geology environment in junction area concluding protogenic geological environment and protogenic geological environment. analyze the Physical geology phenomenon such as collapse and mudflow. etc.. predict the probability evoked by earthquake in junction area. analyze the the stability of bank slope in construction process, the mine of construction material, the changes of the road, thereservoir area immigrate and constuct of the city and country etc. put forward the homologous suggestion measure, at last use grey clustering method to divise the cent of environment geology quantity in junction area. compute the grey level of each unit in junction area. The worse unit of the environment geology quantity mainly is placed in Tianba-landslide which is the important area of environment geology research, suggest to strength the survey this plat and adopt the proper processing measure, with which to assure the safety operation of Daheba Hydro Power Station.更多还原