某水电站倾倒岩体基于UDEC变形评价方法研究

以澜沧江上游某水电站为例,对区域内的勘探平硐进行详细的编录、统计和分析,通过勘查和实地调查对库区倾倒变形体的位置、岩性及产状、结构面特征和规模进行详细分析,发现水电站库岸的倾倒变形严重。借助UDEC软件采用最大水平位移、变形面积、总位移这三种方案对倾倒变形进行评价,得出用总位移作为倾倒变形岩体变形的评价方法更为准确。

Study on the evaluation method of toppling rock mass of a hydropower station based on UDEC

Taking a hydropower station in the upper reaches of Lancang River as an example, the detailed survey, statistics and analysis of the exploration Adit in the area are carried out, and the location, lithology, occurrence, structure and characteristics of the toppling deformation body are analyzed in detail. It is found that the toppling deformation of the reservoir bank is serious. With the passage of time, the dumping rock experience further deformation under the internal and external force. It seriously restricts the construction of hydropower station. The deformation of the correct methods of evaluation is of great significance to the safety of the bank. With the help of UDEC software, the maximum horizontal displacement, the deformation area and the total displacement are used to evaluate the toppling deformation. It is concluded that the method of evaluating the deformation of rock mass with total displacement is more accurate.