本文選題：潘口水電站 + 巖質邊坡��； 參考：《南昌大學》2017年碩士論文

【摘要】：本文主要對潘口水電站引水隧洞進水口邊坡穩(wěn)定性進行研究。潘口水電站位于湖北省十堰市竹山縣境內,地處堵河干流上游河段,壩址距竹山縣城13km,距十堰公路162km。工程以發(fā)電、防洪為主,建成后還可以增加南水北調中線工程的可調水量,提高南水北調的供水保證率,改善庫區(qū)通航條件等綜合利用效益。水庫總庫容23.38億m3,調節(jié)庫容11.20億m3,為完全年調節(jié)水庫。電站裝機2臺,總裝機容量500MW。潘口水電站為一等大(I)型工程。樞紐建筑物主要包括混凝土面板堆石壩、右岸岸邊開敞式溢洪道、右岸泄洪洞、左岸引水隧洞、地面廠房和開關站等。引水隧洞進水口為1級建筑物,邊坡級別為1級。潘口水電站引水隧洞進水口布置在左岸壩前,為岸塔式進水口,長30.0m,寬67.0m,高55.0m。地形自然坡度較陡,大部分地段基巖裸露,緩坡部位分布有殘、坡積物,地基巖體類別為Ⅲ2類,由于進水口地形自然坡度較陡,夾有巖屑和構造泥,層間錯動帶發(fā)育頻數(shù),節(jié)理組合切割不利于進水口開挖邊坡的穩(wěn)定,嚴重危害進水口邊坡的穩(wěn)定性。為確保邊坡巖體在運行期的穩(wěn)定性,本論文對邊坡在已有的地質參數(shù)和開挖邊坡的穩(wěn)定性進行研究,分析邊坡在采取工程加固措施下減少邊坡開挖高度、降低邊坡開挖規(guī)模的可能性;分析邊坡在水庫蓄水后以及蓄水后遭遇地震時的穩(wěn)定性;最后,提出經濟合理、技術優(yōu)化的邊坡開挖方案及邊坡加固措施。具體內容包括以下幾個方面:(1)根據(jù)進水口邊坡的地質、地形條件,建立范圍、精度滿足設計需要的計算模型;(2)研究進水口邊坡在天然狀態(tài)和開挖后的穩(wěn)定情況、可能的失穩(wěn)區(qū)域,并提出開挖方式、順序,確定邊坡的支護措施及需要重點加固的范圍。(3)根據(jù)初步開挖加固方案,進行各種巖體力學參數(shù)敏感分析,進行開挖坡比和支護措施的敏感分析;(4)合理地選取可能的不同計算工況,對不同工況進行穩(wěn)定性分析及支護方案的研究;(5)在上述各計算結果的基礎上,對進水口邊坡穩(wěn)定性進行綜合分析與評價。
[Abstract]:In this paper, the stability of intake slope of diversion tunnel of Pankou Hydropower Station is studied. Pankou Hydropower Station is located in Zhushan County, Shiyan City, Hubei Province. It is located in the upper reaches of the main river of Shuanhe River. The dam site is 13km from Zhushan County and 162km from Shiyan Highway. The main project is power generation and flood control. After the project is completed, the adjustable water quantity of the middle route project of South-to-North Water transfer Project can be increased, the water supply guarantee rate of the South-to-North Water transfer Project can be improved, and the comprehensive utilization benefit of the navigation condition of the reservoir area can be improved. The total storage capacity of the reservoir is 2.338 billion m3 and the regulating capacity is 1.12 billion m3. Power station installed 2 units, the total installed capacity 500MW. Pankou Hydropower Station is a first class project. The key buildings include concrete face rockfill dam, open spillway on the right bank, flood discharge tunnel on the right bank, diversion tunnel on the left bank, ground workshop and switch station, etc. The intake of diversion tunnel is class 1 building and the slope grade is 1 grade. The intake of diversion tunnel of Pankou Hydropower Station is arranged in front of the left bank dam, which is an onshore tower inlet with a length of 30.0 m, a width of 67.0 m and a height of 55.0 m. The natural slope of the topography is steep, the bedrock is exposed in most areas, the weak slope is distributed in the part of the gentle slope, and the slope is of type 鈪，

本文編號：1961250