大柳树堤址松动岩体的渗透特性
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摘要
根据大量的水利水电勘察资料和各方面的专题研究成果,证明大柳树坝址存在、大范围的松动岩体。这个问题的提出使得人们对大柳树复杂工程地质条件的认识有了一个质的飞跃。结构面张开、渗透性强烈是松动岩体的水文地质特征,它们将严重影响坝址防渗处理、高边坡开挖、渗透和渗漏稳定,将具有技术上高难度、经济上高投入、安全上难保证、决策上高风险等四大特点,所以要高度谨慎地对待松动岩体的渗透问题。
According to abundant prospecting data of irrigation works and hydropower stations and various reports of monographic study,it has been testified that there is relaxed rockmass over an extensive area at Dalushu dam site. It results in an essential leap in cognition process concerning complicated geological engineering conditions on Daliushu dam site. Both open structural surface and intensive permeability are the hydrogeological features of relaxed rockmass. Study is made on the treatment of permeable rockmass,excavation of high slopes,seepage loss and permeation stability of rockmass. The study results show that the project in such condition is of the features,such as higher difficulty of technology,huger investment,difficulty to safeguard,higher risk of policy making.
According to abundant prospecting data of irrigation works and hydropower stations and various reports of monographic study,it has been testified that there is relaxed rockmass over an extensive area at Dalushu dam site. It results in an essential leap in cognition process concerning complicated geological engineering conditions on Daliushu dam site. Both open structural surface and intensive permeability are the hydrogeological features of relaxed rockmass. Study is made on the treatment of permeable rockmass,excavation of high slopes,seepage loss and permeation stability of rockmass. The study results show that the project in such condition is of the features,such as higher difficulty of technology,huger investment,difficulty to safeguard,higher risk of policy making.
引文
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2韩文峰.黄河黑山峡小观音坝址工程地质研究[M].兰州:兰州大学出版社,1999
3谌文武,梁收运.松动岩体的工程地质研究[J].岩石力学与工程学报,2000,19(6):751～755
4周特先.宁夏构造地貌[M].银川:宁夏人民出版社,1994
5胡海涛.黄河黑山峡河段大柳树坝址工程地质专题研究[M].北京:地震出版社,1991
6殷跃平.重大工程选址区域地壳稳定性评价专家系统[M].北京:地震出版社,1992
7水利部天津水利水电勘测设计研究院勘察院.黄河大柳树水利枢纽坝址左岸固结灌浆试验报告[R].1998
8水利部天津水利水电勘测设计研究院勘察院.黄河大柳树水利枢纽坝址水文地质勘察报告[R].2000
9郝哲,王介强,刘斌.岩体渗透注浆的理论研究[J].岩石力学与工程学报,2001,20(4):492～496
10仵彦卿,张倬元.岩体水力学导论[M].成都:西南交大出版社,1990
11菀连菊.工程渗流力学及应用[M].北京:中国建材工业出版社,2001
12崔冠英,潘品蒸.水利工程地质[M].北京:水利电力出版社,1985
13谌文武.黄河黑山峡大柳树坝址松动岩体中断层泥的工程性质[硕士学位论文][D].兰州:兰州大学,1992
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