三峡水库引水工程(方案)秦巴段地壳稳定性评价研究
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摘要
三峡水库引水工程(方案)是南水北调的重要补充工程,具有重要的战略意义和经济意义。本文在分析现今构造应力场、地壳结构、构造格架、活动断裂、地震活动、工程地质岩组等影响地壳稳定性主要因素的基础上,利用模糊数学综合评价模型分构造稳定性和岩土体稳定性两个层次评价工程场地的稳定性。评价结果表明,三峡引水工程场地地壳稳定性较高,适合兴建大型引水工程。同时,运用地壳稳定性评价结果对三条规划线路进行了优化比选,结果表明以中线为最好。
The three Gorges reservoir water-diversion project is a new line of the South-North Water-Diversion Project. The paper studies several major factors which affect the crustal stability in the region. These factors are deep-seated structures,tectonic stress fields,fault activity,earthquake activity and rock properties. In order to improve the accuracy and adaptability of evaluating regional crustal stability, with an emphasis on stability of long deep buried tunnels of water-diversion project on two orders of structural stability and rock mass stability, the authors select dominative conditions which affect regional crust stability as evaluating factors, establish fuzzy evolution model, and fuzzy comprehensive evaluation method. The stability of engineering ground is assessed in terms of structural stability and rock and soil stability using a comprehensive assessment model of fuzzy mathematics. The result shows that the engineering field of the water-diversion project is of high crustal stability and suitable for building large water diversion projects. Of all the thirty regions, the most unstable region (one) covers an area of 699 km2, accounting for only 1.3% of the total engineering field area (about 52577 km2); relatively stable regions (eight) cover an area of 15826 km2, 30.1% of the total area; stable regions (twenty one) cover an area of 36052 km2, 68.6% of the total area. Three designed water diversion lines were optimized and compared using the crustral stability assessment method, indicating that the middle line is the best.
The three Gorges reservoir water-diversion project is a new line of the South-North Water-Diversion Project. The paper studies several major factors which affect the crustal stability in the region. These factors are deep-seated structures,tectonic stress fields,fault activity,earthquake activity and rock properties. In order to improve the accuracy and adaptability of evaluating regional crustal stability, with an emphasis on stability of long deep buried tunnels of water-diversion project on two orders of structural stability and rock mass stability, the authors select dominative conditions which affect regional crust stability as evaluating factors, establish fuzzy evolution model, and fuzzy comprehensive evaluation method. The stability of engineering ground is assessed in terms of structural stability and rock and soil stability using a comprehensive assessment model of fuzzy mathematics. The result shows that the engineering field of the water-diversion project is of high crustal stability and suitable for building large water diversion projects. Of all the thirty regions, the most unstable region (one) covers an area of 699 km2, accounting for only 1.3% of the total engineering field area (about 52577 km2); relatively stable regions (eight) cover an area of 15826 km2, 30.1% of the total area; stable regions (twenty one) cover an area of 36052 km2, 68.6% of the total area. Three designed water diversion lines were optimized and compared using the crustral stability assessment method, indicating that the middle line is the best.
引文
韩金良,吴树仁,谭成轩,孙炜峰,张春山,丁原辰等.2007.东秦岭东江口花岗岩体水压致裂法与AE法地应力测量对比研究.岩石力学与工程学报,26(1):83~86.
孙叶,谭成轩,杨贵生,王瑞江.1997.中国区域地壳稳定性定量化评价与分区.地质力学学报,3(3):42~52.
吴树仁,陈庆宣,徐瑞春,梅应堂,石玲.1996.鄂西清江流域及邻区地壳稳定性评价.地球学报,17(1):1~10.
吴树仁,韩金良,石菊松,张永双,何锋.2004.区域地壳稳定性研究现状和发展趋势.工程地质学报,Suppl:26~30.
吴树仁,张永双,韩金良,石菊松,何锋,谭成轩.2006.三峡水库引水工程秦巴段工程地质条件研究.地球学报,27(5):487~494.
殷跃平,胡海涛,康宏达.1996.区域地壳稳定性评价专家系统研究.地质论评,42(2):174~186.
张国伟,张本仁,袁学诚,肖庆辉.2001.秦岭造山带与大陆动力学.北京,科学出版社.
周兴志.2003.南水北调新线路—三峡水库引水济黄济华北段工程地质条件.工程地质学报,11(2):208~212.
Han Jinliang,Wu Shuren,Tan Chengxuan,Sun Weifeng,Zhang Chunshan,Ding Yuanchen,et al.2007.Study on geostress bycomparing result of AE method withthat of hydraulic fracturingtechnique in Dongjiangkou granitein east Qinling.2007.ChineseJournal of Rock Mechanics and Engineering,26(1):83~86(inChinese with English abstract).
Sun Ye,Tan Chengxuan,Yang Guisheng,Wang Ruijiang.1997.Quantitative assessment and zonation of regional crustalstability in China.Journal of Geomechanics,3(3):42~52(inChinese with English abstract).
Wu Shuren,Chen Qingxuan,Xu Ruichun,Mei Yingtang,Shi Ling.1996.Assessment of the crustal stability in the Qingjiang riverbasin of western Hubei province and its peripheral area.ActaGeoscientia Sinica,17(1):1~10(in Chinese with Englishabstract).
Wu Shuren,Han Jinliang,Shi Jusong,Zhang Yongshuang,He Feng.2004.Progress and develop trend of the study on regionalcrustal stability in China.Journal of Engineering Geology,Suppl:26~30(in Chinese with English abstract).
Wu Shuren,Zhang Yongshuang,Han Jinliang,Shi Jusong,HeFeng,Tan Chengxuan.2006.The engineering geologicalconditions of the Qinling-Dabashan sector of the water diversionproject from the three gorges reservoir to the Yellow river.Acta Geoscientia Sinica,27(5):487~494(in Chinese withEnglish abstract).
Yin Yueping,Hu Haitao,Kang Hongda.1996.An expert system ofregional crustal stability evaluation of the siting of keyengineering works.Geological Review,42(2):174~186(inChinese with English abstract).
Zhang Guowei,Zhang Benren,Yuan Xuecheng,Xiao Qinghui.2001.Qinling orogenic belt and continental dynamics.Beijing.ScienceHouse(in Chinese).
Zhou Xingzhi.2003.Engineering-geological conditions for a newlineof south-north water-diversion project from the Three Gorgesreservoir to Yellow river and north China.Journal ofEngineering Geology,11(2):208~212(in Chinese with Englishabstract).
孙叶,谭成轩,杨贵生,王瑞江.1997.中国区域地壳稳定性定量化评价与分区.地质力学学报,3(3):42~52.
吴树仁,陈庆宣,徐瑞春,梅应堂,石玲.1996.鄂西清江流域及邻区地壳稳定性评价.地球学报,17(1):1~10.
吴树仁,韩金良,石菊松,张永双,何锋.2004.区域地壳稳定性研究现状和发展趋势.工程地质学报,Suppl:26~30.
吴树仁,张永双,韩金良,石菊松,何锋,谭成轩.2006.三峡水库引水工程秦巴段工程地质条件研究.地球学报,27(5):487~494.
殷跃平,胡海涛,康宏达.1996.区域地壳稳定性评价专家系统研究.地质论评,42(2):174~186.
张国伟,张本仁,袁学诚,肖庆辉.2001.秦岭造山带与大陆动力学.北京,科学出版社.
周兴志.2003.南水北调新线路—三峡水库引水济黄济华北段工程地质条件.工程地质学报,11(2):208~212.
Han Jinliang,Wu Shuren,Tan Chengxuan,Sun Weifeng,Zhang Chunshan,Ding Yuanchen,et al.2007.Study on geostress bycomparing result of AE method withthat of hydraulic fracturingtechnique in Dongjiangkou granitein east Qinling.2007.ChineseJournal of Rock Mechanics and Engineering,26(1):83~86(inChinese with English abstract).
Sun Ye,Tan Chengxuan,Yang Guisheng,Wang Ruijiang.1997.Quantitative assessment and zonation of regional crustalstability in China.Journal of Geomechanics,3(3):42~52(inChinese with English abstract).
Wu Shuren,Chen Qingxuan,Xu Ruichun,Mei Yingtang,Shi Ling.1996.Assessment of the crustal stability in the Qingjiang riverbasin of western Hubei province and its peripheral area.ActaGeoscientia Sinica,17(1):1~10(in Chinese with Englishabstract).
Wu Shuren,Han Jinliang,Shi Jusong,Zhang Yongshuang,He Feng.2004.Progress and develop trend of the study on regionalcrustal stability in China.Journal of Engineering Geology,Suppl:26~30(in Chinese with English abstract).
Wu Shuren,Zhang Yongshuang,Han Jinliang,Shi Jusong,HeFeng,Tan Chengxuan.2006.The engineering geologicalconditions of the Qinling-Dabashan sector of the water diversionproject from the three gorges reservoir to the Yellow river.Acta Geoscientia Sinica,27(5):487~494(in Chinese withEnglish abstract).
Yin Yueping,Hu Haitao,Kang Hongda.1996.An expert system ofregional crustal stability evaluation of the siting of keyengineering works.Geological Review,42(2):174~186(inChinese with English abstract).
Zhang Guowei,Zhang Benren,Yuan Xuecheng,Xiao Qinghui.2001.Qinling orogenic belt and continental dynamics.Beijing.ScienceHouse(in Chinese).
Zhou Xingzhi.2003.Engineering-geological conditions for a newlineof south-north water-diversion project from the Three Gorgesreservoir to Yellow river and north China.Journal ofEngineering Geology,11(2):208~212(in Chinese with Englishabstract).
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