不同岩溶形态场地抗浮水位取值研究
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摘要
本文针对贵州岩溶场地,对4类不同岩溶形态下抗浮水位取值进行了研究,得到如下结论:(1)当场地潜水含水层厚度大于地基基础设置深度时,场地的最高地下水位与抗浮水位相同,当场区处于四周高、中间低的低洼地带及承压含水层分布区时地下水位低于抗浮水位;(2)抗浮水位取值可通过勘察期间场区地下水最高水位(H_(kmax))、可能的意外补给造成该层地下水位的变幅值(ΔH_0)和该层地下水相对勘察时的最大变幅值(ΔH_e)三者之和进行求得;(3)大型岩溶洼地场区对有地下工程分布的建筑物应重点考虑抗浮影响,这与场区的历史水位、将来环境条件改变后可能存在的最高水位密切相关;基础下部发育大型空腔溶洞场地需要认真分析溶洞水环境特征;浅埋型岩溶暗河管道发育场地地下建筑物底板基础可能存在置于暗河顶部附近或穿过暗河管道两种情况,两者对抗浮水位取值均有不同程度的影响;承压含水层场地应通过水位变化线性图确定场地抗浮水位变化范围,整体地下建筑物按高值确定抗浮水位,分段地下建筑物区间高值确定。本文研究对岩溶地区工程建设有一定的指导意义。
Aiming at karst site in Guizhou,four different karst forms anti-uplift water level values are studied and the following conclusions are got:( 1) If the spot to unconfined aquifer thickness is greater than the depth of the foundation,the space of the underground water level and construct water level are the same,if the spot area around in high,middle low low-lying areas and underground water level below the anti-uplift water level when confined aquifer distribution area.( 2) Anti-uplift water level values can be obtained by the sum of the following three: the highest groundwater level during the investigation of ground( H_(kmax)),the possible accident supplies to cause the layer of the underground water level amplitude value( ΔH_0) and the maximum amplitude of the layer groundwater relative prospecting( ΔH_e).( 3) In large karst depressions,it is important to consider the impact of anti-floating on underground buildings,which is closely related to the historical water level of the site and the possible max-level after the change of environmental conditions. The site of large cavity cavern with large cavity should be carefully analyzed.The site of the development of shallow buried karst underground river pipeline underground building mat foundation may exist in the rivers near the top or through underground river pipes,the value of anti-uplift water level are the influence of different level. Confined aquifer field should be determined by the water level change linear figure site scope of anti-uplift water level changes,the whole underground building determined according to the high value of anti-uplift water level,the piecewise interval high value to determine underground buildings. This paper has some guiding significance for engineering construction in karst area.
Aiming at karst site in Guizhou,four different karst forms anti-uplift water level values are studied and the following conclusions are got:( 1) If the spot to unconfined aquifer thickness is greater than the depth of the foundation,the space of the underground water level and construct water level are the same,if the spot area around in high,middle low low-lying areas and underground water level below the anti-uplift water level when confined aquifer distribution area.( 2) Anti-uplift water level values can be obtained by the sum of the following three: the highest groundwater level during the investigation of ground( H_(kmax)),the possible accident supplies to cause the layer of the underground water level amplitude value( ΔH_0) and the maximum amplitude of the layer groundwater relative prospecting( ΔH_e).( 3) In large karst depressions,it is important to consider the impact of anti-floating on underground buildings,which is closely related to the historical water level of the site and the possible max-level after the change of environmental conditions. The site of large cavity cavern with large cavity should be carefully analyzed.The site of the development of shallow buried karst underground river pipeline underground building mat foundation may exist in the rivers near the top or through underground river pipes,the value of anti-uplift water level are the influence of different level. Confined aquifer field should be determined by the water level change linear figure site scope of anti-uplift water level changes,the whole underground building determined according to the high value of anti-uplift water level,the piecewise interval high value to determine underground buildings. This paper has some guiding significance for engineering construction in karst area.
引文
[1]余良刚.岩体基坑地下室抗浮设计水头合理取值研究[D].青岛:青岛理工大学,2013.(Yu Lianggang.Analysis on reasonable value for anti-floating design head of the rock foundation pit basement[D].Qingdao:Qingdao Technologic University,2013.(in Chinese))
[2]王军辉,陶连金,韩煊,等.我国结构抗浮水位研究现状与展望[J].水利水运工程学报,2017(3):124-132.(Wang Junhui,Tao Lianjin,Han Xuan,et al.Research status and progress of groundwater level against floating of structures in China[J].HydroScience and Engineering,2017(3):124-132.(in Chinese))
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[4]张金纯,唐合岗,张晨富.岩溶区漓江河流阶地建筑场地地下水抗浮设防水位的确定[J].山东国土资源,2013,29(10):50-51.(Zhang Jinchun,Tang Hegang,Zhang Chenfu.Determination of anti-floating fortification groundwater level in karst areas in Lijiang River terrace construction site[J].Land and Resources in Shandong Province,2013,29(10):50-51.(in Chinese))
[5]徐梦瑶.长春市地铁一号线典型车站抗浮设防水位研究[D].长春:吉林大学,2012.(Xu Mengyao.Research on water level for prevention of up-floating of topical station in metro line one of Changchun[D].Changchun:Jilin University,2012.(in Chinese))
[6]董雪妍,丁坚平,段先前,等.黔中地区岩溶深基坑抗浮水位及涌水量预测[J].贵州大学学报(自然科学版),2017,34(1):119-122.(Dong Xueyan,Ding Jianping,Duan Xianqian,et al.Prediction of antiFloating water level and inflow water content in karst region in middle Guizhou Province[J].Journal of Guizhou University(Natural Science Edition),2017,34(1):119-122.(in Chinese))
[7]李伟伟,张明义,白晓宇,等.GFRP与钢筋抗浮锚杆承载特性试验研究[J].地下空间与工程学报,2015,11(1):108-114.(Li Weiwei,Zhang Mingyi,Bai Xiaoyu,et al.Experimental research on anchorage performance of GFRP and steel anti-floating anchors[J].Chinese Journal of Underground Space and Engineering,2015,11(1):108-114.(in Chinese))
[8]黄忠辉,季倩倩,林家祥.超大直径泥水平衡盾构隧道抗浮结构试验研究[J].地下空间与工程学报,2010,6(2):250-254.(Huang Zhonghui,Ji Qianqian,Lin Jiaxiang.Experimental study on the anti-uplift of superlarge diameter slurry balance shield tunnel structure[J].Chinese Journal of Underground Space and Engineering,2010,6(2):250-254.(in Chinese))
[9]郑伟龙.北京地区地下结构上的浮力作用机理试验研究[D].北京:中国地质大学(北京),2005.(Zheng Weilong.Experimental study on action mechanism of uplift on the underground structure in Beijing[D].Beijing:China University of Geosciences,2005.(in Chinese))
[10]牛亚强,王旭,蒋代军,等.西宁火车站地下空间抗浮桩抗拔承载力试验研究[J].地下空间与工程学报,2014,10(4):799-803.(Niu Yaqiang,Wang Xu,Jiang Daijun,et al.Study on in-situ test of uplift capacity for anti floating pile in xining railway station underground space[J].Chinese Journal of Underground Space and Engineering,2014,10(4):799-803.(in Chinese))
[11]袁正如.地下工程抗浮设计中的几个问题[J].地下空间与工程学报,2007,3(3):519-521.(Yuan Zhengru.Problems in design of anti-uplift in underground engineering[J].Chinese Journal of Underground Space and Engineering,2007,3(3):519-521.(in Chinese))
[12]蔡洪伟.抗浮锚杆在某工程设计、施工与验收中的应用[J].地下空间与工程学报,2014(增2):1926-1929.(Cai Hongwei.The application of anti-floating bolt in the design,construction and acceptance of a project[J].Chinese Journal of Underground Space and Engineering,2014(Supp.2):1926-1929.(in Chinese))
[13]张在明,孙保卫,徐宏声.地下水赋存状态与渗流特征对基础抗浮的影响[J].土木工程学报,2001,34(1):73-78.(Zhang Zaiming,Sun Baowei,Xu Hongsheng.Effect of characteristics of ground water distribution and seepage on anti-uplift analysis of building foundations[J].China Civil Engineering Journal,2001,34(1):73-78.(in Chinese))
[2]王军辉,陶连金,韩煊,等.我国结构抗浮水位研究现状与展望[J].水利水运工程学报,2017(3):124-132.(Wang Junhui,Tao Lianjin,Han Xuan,et al.Research status and progress of groundwater level against floating of structures in China[J].HydroScience and Engineering,2017(3):124-132.(in Chinese))
[3]刘德龙,武钰华.抗浮水位确定方法的探讨[J].城市地理,2015(24):110-113.(Liu Delong,Wu Yuhua.Discussion on determination method of anti-floating water level[J].Global City Geography,2015(24):110-113.(in Chinese))
[4]张金纯,唐合岗,张晨富.岩溶区漓江河流阶地建筑场地地下水抗浮设防水位的确定[J].山东国土资源,2013,29(10):50-51.(Zhang Jinchun,Tang Hegang,Zhang Chenfu.Determination of anti-floating fortification groundwater level in karst areas in Lijiang River terrace construction site[J].Land and Resources in Shandong Province,2013,29(10):50-51.(in Chinese))
[5]徐梦瑶.长春市地铁一号线典型车站抗浮设防水位研究[D].长春:吉林大学,2012.(Xu Mengyao.Research on water level for prevention of up-floating of topical station in metro line one of Changchun[D].Changchun:Jilin University,2012.(in Chinese))
[6]董雪妍,丁坚平,段先前,等.黔中地区岩溶深基坑抗浮水位及涌水量预测[J].贵州大学学报(自然科学版),2017,34(1):119-122.(Dong Xueyan,Ding Jianping,Duan Xianqian,et al.Prediction of antiFloating water level and inflow water content in karst region in middle Guizhou Province[J].Journal of Guizhou University(Natural Science Edition),2017,34(1):119-122.(in Chinese))
[7]李伟伟,张明义,白晓宇,等.GFRP与钢筋抗浮锚杆承载特性试验研究[J].地下空间与工程学报,2015,11(1):108-114.(Li Weiwei,Zhang Mingyi,Bai Xiaoyu,et al.Experimental research on anchorage performance of GFRP and steel anti-floating anchors[J].Chinese Journal of Underground Space and Engineering,2015,11(1):108-114.(in Chinese))
[8]黄忠辉,季倩倩,林家祥.超大直径泥水平衡盾构隧道抗浮结构试验研究[J].地下空间与工程学报,2010,6(2):250-254.(Huang Zhonghui,Ji Qianqian,Lin Jiaxiang.Experimental study on the anti-uplift of superlarge diameter slurry balance shield tunnel structure[J].Chinese Journal of Underground Space and Engineering,2010,6(2):250-254.(in Chinese))
[9]郑伟龙.北京地区地下结构上的浮力作用机理试验研究[D].北京:中国地质大学(北京),2005.(Zheng Weilong.Experimental study on action mechanism of uplift on the underground structure in Beijing[D].Beijing:China University of Geosciences,2005.(in Chinese))
[10]牛亚强,王旭,蒋代军,等.西宁火车站地下空间抗浮桩抗拔承载力试验研究[J].地下空间与工程学报,2014,10(4):799-803.(Niu Yaqiang,Wang Xu,Jiang Daijun,et al.Study on in-situ test of uplift capacity for anti floating pile in xining railway station underground space[J].Chinese Journal of Underground Space and Engineering,2014,10(4):799-803.(in Chinese))
[11]袁正如.地下工程抗浮设计中的几个问题[J].地下空间与工程学报,2007,3(3):519-521.(Yuan Zhengru.Problems in design of anti-uplift in underground engineering[J].Chinese Journal of Underground Space and Engineering,2007,3(3):519-521.(in Chinese))
[12]蔡洪伟.抗浮锚杆在某工程设计、施工与验收中的应用[J].地下空间与工程学报,2014(增2):1926-1929.(Cai Hongwei.The application of anti-floating bolt in the design,construction and acceptance of a project[J].Chinese Journal of Underground Space and Engineering,2014(Supp.2):1926-1929.(in Chinese))
[13]张在明,孙保卫,徐宏声.地下水赋存状态与渗流特征对基础抗浮的影响[J].土木工程学报,2001,34(1):73-78.(Zhang Zaiming,Sun Baowei,Xu Hongsheng.Effect of characteristics of ground water distribution and seepage on anti-uplift analysis of building foundations[J].China Civil Engineering Journal,2001,34(1):73-78.(in Chinese))