黄河黑山峡大柳树坝坝址岩体渗漏量及灌浆量数值模拟研究
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摘要
大坝坝址岩体的渗漏研究对于大坝的安全运营至关重要。在进行渗漏治理的措施中,灌浆是常见的一种,但目前确定灌浆的各项参数,如配合比,孔距等,需通过灌浆试验花费大量的人财物力及时间才能确定。为快速查清每一种灌浆方案所灌浆量,本文针对模拟坝址水库渗漏灌浆效果的三维数值模拟开展了计算研究。在对大柳树坝坝址岩体地质情况及渗漏情况分析的基础上,将蓄水前的地下水运移规律模拟出,与实际通过钻孔平硐资料及分析得出的实际地下水运移规律做比较,验证对地下水运移规律的假设;然后将蓄水后的地下水运移规律模拟出,确定地下水的运移规律,了解地下水运移的方向,验证与根据实际情况初步判断的地下水运移方向是否吻合;最后通过数值模拟确定在一定灌浆浆液配合比的情况下所需灌浆量与实际的灌浆试验结果做比较。得出结果与实际灌浆试验结果吻合,证明通过数值模拟,建立浆液配合比与灌浆效果之间的关系,在类似情况快速地选取配合比是可行的。
Grouting is a common measure for leakage control in dam rock mass.,Currently the physical grouting test is used to determine the parameters such as grouting ratio and pitch.It must spend a lot of time and effort.This paper develops a 3-dimesional numerical simulation test of grouting seepage for rapid determining grouting schemes.It uses a dam site with known geological conditions and analysis of rock leakage.It simulates the migration regularity of groundwater water before store water in the reservoir.The simulated results are compared with actual drilling data and ground water migration patterns in flat adit.The assumption of groundwater migration rule is also compared.It then simulates the groundwater reservoir migration regularity of groundwater,simulates and understands migration regularity of groundwater,and the direction of migration.The preliminary judgment is done according to the actual situation of groundwater migration direction.Finally,numerical simulation determines the certain proportion of slurry grouting for grouting quantity and the situation of the actual grouting test results.The results show that the numerical simulation test can establish the relationship between mix design of slurry grouting and the effect of grounting.This relationship can be used for quick selection of the mix design in similar proportions.
Grouting is a common measure for leakage control in dam rock mass.,Currently the physical grouting test is used to determine the parameters such as grouting ratio and pitch.It must spend a lot of time and effort.This paper develops a 3-dimesional numerical simulation test of grouting seepage for rapid determining grouting schemes.It uses a dam site with known geological conditions and analysis of rock leakage.It simulates the migration regularity of groundwater water before store water in the reservoir.The simulated results are compared with actual drilling data and ground water migration patterns in flat adit.The assumption of groundwater migration rule is also compared.It then simulates the groundwater reservoir migration regularity of groundwater,simulates and understands migration regularity of groundwater,and the direction of migration.The preliminary judgment is done according to the actual situation of groundwater migration direction.Finally,numerical simulation determines the certain proportion of slurry grouting for grouting quantity and the situation of the actual grouting test results.The results show that the numerical simulation test can establish the relationship between mix design of slurry grouting and the effect of grounting.This relationship can be used for quick selection of the mix design in similar proportions.
引文
[1]陈崇希,地下水动力学[M].武汉:中国地质大学出版社,2006.Chen Chongxi.Dynamics of Groundwater.Wuhan:China Univer-sity of Geosciences Press,2006.
[2]刘杰.土的渗透稳定与渗流控制[M].北京:中国水利水电出版社,1992.Liu Jie.Seepage Stability and Seepage Control about Soil.Beijing:China WaterPower Press,1992.
[3]张倬元.工程地质分析原理[M].北京:地质出版社,2009.Zhang Zhuoyuan.Engineering Geological Analysis Principle.Bei-jing:Geological Publishing House,2009.
[4]张景秀.坝基防渗与灌浆技术[M].北京:中国水利水电出版社,2002.Zhang Jingxiu.Seepage and Grouting Technology of Dam.Beijing:China WaterPower Press,2002.
[5]罗守成.对深厚覆盖层地质问题的认识[J].水力发电,1995,(4):21~24.Luo Shoucheng.Deep covering layer geological problems.WaterPower,1995,(4):21~24.
[6]刘泽国,辜明清.中江黄鹿水库坝基覆盖层工程地质特性研究[J].四川水力发电,2003,22(1):25~26.Liu Zeguo,Gu Mingqing.Study on engineering geological propertyof overburden on dam foundation at Huanglu reservoir inZhongjiang.Sichuan Water Power,2003,22(1):25~26.
[7]韩文峰,等.黄河黑山峡大柳树松动岩体工程地质研究[M].兰州:甘肃科学技术出版社,1993.Han Wenfeng,et al.Loose rock engineering geology research a-bout daliushu dam at Yellow River HeiShanXia.Lanzhou:GansuScience and Technology Press,1993.
[8]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,1993.Hu Haitao.Engineering geology research about daliushu dam atYellow River Heishanxia.Beijing:Earthquake Press,1993.
[9]蒋硕忠.灌浆材料与灌浆工艺研究[J].水利水电技术,2001,32(9):55~58.Jiang Shuozhong.Grouting materials and grouting technology re-search.Water Resources and Hydropower Engineering,2001,32(9):55~58.
[10]柴寿喜,王银梅,王君国.大柳树坝址灌浆试验与岩体质量[J].岩石力学与工程学报,2003,(增2):2555~2558.Chai Shouxi,Wang Yinmei,Wang Junguo.Grouting test andquality assessment of rockmass for damsite of Daliushu water pro-ject.Chinese Journal of Rock Mechanics and Engineering,2003,(s2):2555~2558.
[11]蒋亚萍,陈余道.MODFLOW——一套水文地质学实用计算软件[J].广西地质,1999,12(3):75~78.Jiang Yaping,Chen Yudao.MODFLOW——A pratical calculat-ing software in the field of hydrology.Guangxi Geology,1999,12(3):75~78.
[12]孙讷正.地下水流的数学模型和数值方法[M].北京:地质出版社,1981.Sun Nazheng.Mathematical Model and Numerical Method ofGroundwater.Beijing:Geological Publishing House,1981.
[2]刘杰.土的渗透稳定与渗流控制[M].北京:中国水利水电出版社,1992.Liu Jie.Seepage Stability and Seepage Control about Soil.Beijing:China WaterPower Press,1992.
[3]张倬元.工程地质分析原理[M].北京:地质出版社,2009.Zhang Zhuoyuan.Engineering Geological Analysis Principle.Bei-jing:Geological Publishing House,2009.
[4]张景秀.坝基防渗与灌浆技术[M].北京:中国水利水电出版社,2002.Zhang Jingxiu.Seepage and Grouting Technology of Dam.Beijing:China WaterPower Press,2002.
[5]罗守成.对深厚覆盖层地质问题的认识[J].水力发电,1995,(4):21~24.Luo Shoucheng.Deep covering layer geological problems.WaterPower,1995,(4):21~24.
[6]刘泽国,辜明清.中江黄鹿水库坝基覆盖层工程地质特性研究[J].四川水力发电,2003,22(1):25~26.Liu Zeguo,Gu Mingqing.Study on engineering geological propertyof overburden on dam foundation at Huanglu reservoir inZhongjiang.Sichuan Water Power,2003,22(1):25~26.
[7]韩文峰,等.黄河黑山峡大柳树松动岩体工程地质研究[M].兰州:甘肃科学技术出版社,1993.Han Wenfeng,et al.Loose rock engineering geology research a-bout daliushu dam at Yellow River HeiShanXia.Lanzhou:GansuScience and Technology Press,1993.
[8]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,1993.Hu Haitao.Engineering geology research about daliushu dam atYellow River Heishanxia.Beijing:Earthquake Press,1993.
[9]蒋硕忠.灌浆材料与灌浆工艺研究[J].水利水电技术,2001,32(9):55~58.Jiang Shuozhong.Grouting materials and grouting technology re-search.Water Resources and Hydropower Engineering,2001,32(9):55~58.
[10]柴寿喜,王银梅,王君国.大柳树坝址灌浆试验与岩体质量[J].岩石力学与工程学报,2003,(增2):2555~2558.Chai Shouxi,Wang Yinmei,Wang Junguo.Grouting test andquality assessment of rockmass for damsite of Daliushu water pro-ject.Chinese Journal of Rock Mechanics and Engineering,2003,(s2):2555~2558.
[11]蒋亚萍,陈余道.MODFLOW——一套水文地质学实用计算软件[J].广西地质,1999,12(3):75~78.Jiang Yaping,Chen Yudao.MODFLOW——A pratical calculat-ing software in the field of hydrology.Guangxi Geology,1999,12(3):75~78.
[12]孙讷正.地下水流的数学模型和数值方法[M].北京:地质出版社,1981.Sun Nazheng.Mathematical Model and Numerical Method ofGroundwater.Beijing:Geological Publishing House,1981.
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