人民长江
人民長江
인민장강
YANGTZE RIVER
2015年
2期
76-80
,共5页
坝基处理%渗控体系%抽排体系%重力坝%向家坝水电站
壩基處理%滲控體繫%抽排體繫%重力壩%嚮傢壩水電站
패기처리%삼공체계%추배체계%중력패%향가패수전참
dam foundation treatment%seepage control system%drainage system%gravity dam%Xiangjiaba Hydropower Station
向家坝水电站地质条件复杂，坝基存在以挠曲核部破碎带、挤压破碎带和软弱夹层为代表的地质缺陷。从建基面选择、渗控体系设计、基础灌浆加固处理3个方面论述了坝基处理的设计方法。特别是综合考虑坝基扬压力和坝基渗透稳定性要求，创新性地提出了“可控抽排体系”的设计理念，即对坝基排水孔设置阀门，可在初期蓄水后，根据扬压力监测资料，人为调节排水孔出水量。上述设计理念与方法可供其他坝工地基处理设计参考。
嚮傢壩水電站地質條件複雜，壩基存在以撓麯覈部破碎帶、擠壓破碎帶和軟弱夾層為代錶的地質缺陷。從建基麵選擇、滲控體繫設計、基礎灌漿加固處理3箇方麵論述瞭壩基處理的設計方法。特彆是綜閤攷慮壩基颺壓力和壩基滲透穩定性要求，創新性地提齣瞭“可控抽排體繫”的設計理唸，即對壩基排水孔設置閥門，可在初期蓄水後，根據颺壓力鑑測資料，人為調節排水孔齣水量。上述設計理唸與方法可供其他壩工地基處理設計參攷。
향가패수전참지질조건복잡，패기존재이뇨곡핵부파쇄대、제압파쇄대화연약협층위대표적지질결함。종건기면선택、삼공체계설계、기출관장가고처리3개방면논술료패기처리적설계방법。특별시종합고필패기양압력화패기삼투은정성요구，창신성지제출료“가공추배체계”적설계이념，즉대패기배수공설치벌문，가재초기축수후，근거양압력감측자료，인위조절배수공출수량。상술설계이념여방법가공기타패공지기처리설계삼고。
The geological condition of Xiangjiaba Hydropower Station is complicated with main geological defects of the fracture belts at deflection core area , the compressed fracture belts and the soft interlayer .The design method of dam foundation treatment is presented from three aspects of foundation surface selection , seepage control design and reinforced grouting of foundation .Es-pecially, according to the contradiction of foundation lift force and foundation seepage stability , we have proposed a solution of controlling drainage system innovatively , i.e., setting valves in the drainage outlets of the dam foundation to adjust the drainage volume according to the monitoring data in the initial reservoir impoundment .
