长沙市地下空间开发地质环境适宜性评价
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摘要
为查明长沙市地下空间开发地质环境影响因素及各因素影响程度,评价长沙市地下空间开发地质环境适宜性,本文在分析长沙市城市地质环境的基础上,从自然地理条件、工程地质条件、水文地质条件、地质灾害条件四个方面,构建了由4个第一级指标(准则层)、12个第二级指标(指标层)组成的长沙城市地下空间开发地质环境适宜性评价指标体系。采用层次分析法与模糊综合评判法进行了地下空间开发适宜性分区评价。评价结果表明,岩土体类型、岩土体结构和地质承载力对于地下空间开发影响最大;长沙市城市地下空间开发的地质环境适宜性等级可划分为良好区(Ⅰ)、较好区(Ⅱ)、一般区(Ⅲ)以及较差区(Ⅳ)。Ⅰ至Ⅳ区面积占比依次为:22%、25%、36%、17%。Ⅰ-Ⅱ级区域岩土体结构稳定,地基承载力高,地下空间开发地质环境条件总体较好;Ⅲ-Ⅳ级区域岩土体结构复杂,地基承载力较差,地下空间开发地质环境条件总体较差,地下工程建设施工难度相对较大,成本较高。该评价结果可为长沙市城市地下空间开发利用的整体规划提供指导和借鉴。
In order to find out the main geological environment factors and explore the suitability of Changsha's underground space development,an geological environment suitability index system for Changsha city with 4 first-level indicators(criteria level)and 12 second-level indicators(index layers)is constructed,based on the analysis of urban geological environmental of Changsha city,especially from the natural geographical conditions,engineering geological conditions,hydro-geological conditions and geological disaster conditions.Under the guidance of this index system,the geological environment suitability distribution of underground space development for Changsha city is carried out by using AHP and fuzzy comprehensive evaluation method.The results show that,the rock-soil mass type,rock-soil mass structure and geological bearing capacity have the greatest impact on underground space development.The geological environment suitability can be divided into four grades:good(Ⅰ),better(Ⅱ),general(Ⅲ)and poor(Ⅳ),The area ratio from I to IV is:22%,25%,36%,17%.TheⅠ-Ⅱ area is characterized by steady rock-soil structure,higher bearing capacity of the foundation,therefore the geological environment conditions for underground space development are generally good;theⅢ-Ⅳ area is characterized by complicated rock-soil structure,poor bearing capacity of the foundation,therefore the geological environment conditions for underground space development are generally poor,and project construction underground is difficult,with higher cost.The evaluation results could offer guidance and reference to the overall planning of underground space utilization of Changsha city.
In order to find out the main geological environment factors and explore the suitability of Changsha's underground space development,an geological environment suitability index system for Changsha city with 4 first-level indicators(criteria level)and 12 second-level indicators(index layers)is constructed,based on the analysis of urban geological environmental of Changsha city,especially from the natural geographical conditions,engineering geological conditions,hydro-geological conditions and geological disaster conditions.Under the guidance of this index system,the geological environment suitability distribution of underground space development for Changsha city is carried out by using AHP and fuzzy comprehensive evaluation method.The results show that,the rock-soil mass type,rock-soil mass structure and geological bearing capacity have the greatest impact on underground space development.The geological environment suitability can be divided into four grades:good(Ⅰ),better(Ⅱ),general(Ⅲ)and poor(Ⅳ),The area ratio from I to IV is:22%,25%,36%,17%.TheⅠ-Ⅱ area is characterized by steady rock-soil structure,higher bearing capacity of the foundation,therefore the geological environment conditions for underground space development are generally good;theⅢ-Ⅳ area is characterized by complicated rock-soil structure,poor bearing capacity of the foundation,therefore the geological environment conditions for underground space development are generally poor,and project construction underground is difficult,with higher cost.The evaluation results could offer guidance and reference to the overall planning of underground space utilization of Changsha city.
引文
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[14]潘朝，吴立，左清军，等．基于模糊数学的武汉市地下空间开发地质适宜评价[J]．安全与环境工程，2013,20(2):19-23.PAN Chao,WU Li,ZUO Qingjun,et al.Geological suitability evaluation of development of underground space in Wuhan city based on fuzzy mathematics[J].Safety and Environmental Engineering,2013,20(2):19-23．
[15]熊立，梁樑，王国华．层次分析法中数字标度的选择与评价方法研究[J]．系统工程理论与实践，2005,25(3):72-79.XIONG Li,LIANG Liang,WANG Guohua.Method research on the valuation of numeric scale in analytic hierarchy process[J].Systems Engineering Theory&Practice,2005,25(3):72-79.
[2]徐定芳，范毅，肖立权，等．湖南1∶5万长沙幅（H49E023020）大托铺幅（H49E024020）环境地质调查成果报告[R]．株洲：湖南省地质矿产勘查开发局四一六队，2016．
[3]周秋光，车昭益．长沙城市地下空间规划刻不容缓[J]．国土资源导刊，2009(8):31-33.ZHOU Qiuguang,CHE Zhaoyi.The underground space planning of Changsha city is an urgent task[J].Land and Resources Guide,2009(8):31-33．
[4]刘运来，吴江鹏，彭培宇，等．基于地质环境要素的地下空间利用适宜性评价[J]．长江科学院院报，2017,34(5):58-62.LIU Yunlai,WU Jiangpeng,PENG Peiyu,et al.Suitability evaluation for the utilization of underground space in consideration of geo-environment factors[J].Journal of Yangtze River Scientific Research Institute,2017,34(5):58-62．
[5]欧孝夺，杨荣才，周东，等．AHP法在南宁市地下空间开发地质环境适宜性评价中的应用[J]．桂林工学院学报，2009,29(4):474-480.OU Xiaoduo,YANG Rongcai,ZHOU Dong,et al.Application of AHP to geological environment suitability assessment in Nanning underground development[J].Journal of Guilin University of Technology,2009,29(4):474-480．
[6]彭苗枝，包海玲，刘道彬，等．地下空间工程地质适宜性灰色评估[J]．采矿技术，2010,10(3):114-116.PENG Miaozhi,BAO Hailing,LIU Daobin,et al.Grey evaluation of geological suitability of underground space engineering[J].Mining Technology,2010,10(3):114-116．
[7]杨顺泉，李佐海．湖南地质灾害[M]．长沙：湖南科学技术出版社，2001．
[8]范峻慧．长沙市地质环境脆弱性诊断及对策研究[D]．长沙：中南大学，2012．
[9]罗国煜，李晓昭，阎长虹，等．地下工程环境岩土工程问题研究与认识[J]．地质学刊，2009,33(1):1-7.LUO Guoyu,LI Xiaozhao,YAN Changhong,et al.Research on environmental and geotechnical engineering problems in underground engineering[J].Journal of Geology,2009,33(1):1-7．
[10]邓佩如，关欣，李巧云．长沙市城市地下空间开发利用的地质因素分析[J]．安徽农业科学，2015(12):259-261.DENG Peiru,GUAN Xin,LI Qiaoyun.Analysis of geological factors in the development and utilization of urban underground space in Changsha city[J].Anhui Agricultural Sciences,2015(12):259-261．
[11]周爱国．地质环境评价[M]．武汉：中国地质大学出版社，2008．
[12]刘健，魏永耀，高立，等．苏州城市规划区地下空间开发适宜性评价[J]．地质学刊，2014,38(1):94-97.LIU Jian,WEI Yongyao,GAO Li,et al.On development suitability appraisal of underground space in Suzhou urban planning zone[J].Journal of Geology,2014,38(1):94-97．
[13]胡学祥，刘干斌，陶海冰．基于ArcGIS宁波市地下空间开发适宜性评价研究[J]．地下空间与工程学报，2016,12(6):1439-1444.HU Xuexiang,LIU Ganbin,TAO Haibing.Research on evaluation suitability for the development of underground space in Ningbo city based on ArcGIS[J].Chinese Journal of Underground Space and Engineering,2016,12(6):1439-1444．
[14]潘朝，吴立，左清军，等．基于模糊数学的武汉市地下空间开发地质适宜评价[J]．安全与环境工程，2013,20(2):19-23.PAN Chao,WU Li,ZUO Qingjun,et al.Geological suitability evaluation of development of underground space in Wuhan city based on fuzzy mathematics[J].Safety and Environmental Engineering,2013,20(2):19-23．
[15]熊立，梁樑，王国华．层次分析法中数字标度的选择与评价方法研究[J]．系统工程理论与实践，2005,25(3):72-79.XIONG Li,LIANG Liang,WANG Guohua.Method research on the valuation of numeric scale in analytic hierarchy process[J].Systems Engineering Theory&Practice,2005,25(3):72-79.