城市建设地质极限问题分析
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摘要
从地质学与力学的角度看 ,城市的不断扩展等同于城市建设对地质环境施加规模和强度不断增大的荷载 ,而城市下伏岩土体承受荷载的能力是有限的。本文由此侧面切入城市地质环境与地质灾害问题。注重潜在的、缓慢的城市地质作用。以承载能力的极限为研究目标 ,重在提示附加应力对地质介质力学性状的作用 ,并由此揭示对地基破坏、区域地面沉降、含水层状态、地震波传输性状及断裂活动性诱发等存在的扰动机理
From the viewpoint of geology and mechanics, progressive enlargement of cities puts loadings on its geological environment. Actually bearings of the geomaterials in the environment are limited. This paper presents researches on the geological environment and geological hazards associated with the loadings and bearing limits in cities development. More attentions are paid on the potential geologic process with a slow rate in urban areas. Through finding out reactions of the geological media to overlaying additional loadings, this research aims at seeking bearing limit of geomaterials. As a result, the perturbation mechanism of the basement failure, regional ground subsidence, behaving status of aquifers, seismic wave transmission properties, and active faults reoccurrence, etc., are interpreted.
From the viewpoint of geology and mechanics, progressive enlargement of cities puts loadings on its geological environment. Actually bearings of the geomaterials in the environment are limited. This paper presents researches on the geological environment and geological hazards associated with the loadings and bearing limits in cities development. More attentions are paid on the potential geologic process with a slow rate in urban areas. Through finding out reactions of the geological media to overlaying additional loadings, this research aims at seeking bearing limit of geomaterials. As a result, the perturbation mechanism of the basement failure, regional ground subsidence, behaving status of aquifers, seismic wave transmission properties, and active faults reoccurrence, etc., are interpreted.
引文
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[2] 郭增建未来灾害学[M ].北京:地震出版社,1992.GuoZhengjian.FutureHazards[M ].Bejing:SeismicPress,1992.
[3] 王兰生,孔德坊,赵其华等.城市发展当中的地质环境演化与控制[J].地质灾害与环境保护,1997,8(1):90～109.WangLansheng,KongDefang,ZhaoQihuaetc..Evolutionandcontrolofgeologicalenvironmentoncitydevelopment.JournalofGeologicalHazardsandEnvironmentPreservation,1997,8(1):90～109.
[4] 冉茂玉.我国水资源开发利用现状及对策[J].四川师范大学学报(自然科学版),2001,24(4):416～419.RanMaoyu.CurrentSituationandCountermeasuresonExploita tionandUtilizationofRegionalWaterResourcesinChina.JournalofSi-chuanNormalUniversity(NaturalScience),2001,24(4):416～419.
[5] 严学新,龚士良,曾正强等.上海城区建筑密度与地面沉降关系分析[J].水文地质工程地质,2002,(6):21～25.RanXuexin,GongShiliang,ZengZhengqiang.Relation-shipbe tweenbuildingdensityandlandsubsidenceinShanghaiurbanzone.HydrologicalgeologyandEngineeringgeology,2002,(6):21～25.
[6] 高福晖.地震力学[M].成都:四川科学技术出版社,1994.GouFuhui.Earthquakemechanics.Chengdu:ShichuanScienec-technologyPress,1994.
[7] 吴恒,欧孝平等.城市工程地质问题的经济分析[J].工程地质学报,200311(2):120～126.WuHeng,OuXiaoping,etc..Economicanalysisofurbangeotechnicalengineeringgeology.JournalofEngineeringGeolo gy,200311(2):120～126.
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