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辽宁省沈抚新区区域地壳稳定性评价

张春山 张树轩 杨为民 孟华君 吕佳进 张田田 吴季寰 郭涵

张春山, 张树轩, 杨为民, 等, 2021. 辽宁省沈抚新区区域地壳稳定性评价. 地质力学学报, 27 (3): 453-462. DOI: 10.12090/j.issn.1006-6616.2021.27.03.041
引用本文: 张春山, 张树轩, 杨为民, 等, 2021. 辽宁省沈抚新区区域地壳稳定性评价. 地质力学学报, 27 (3): 453-462. DOI: 10.12090/j.issn.1006-6616.2021.27.03.041
ZHANG Chunshan, ZHANG Shuxuan, YANG Weimin, et al., 2021. Assessment of regional crustal stability in Shenfu New Area of Liaoning Province, China. Journal of Geomechanics, 27 (3): 453-462. DOI: 10.12090/j.issn.1006-6616.2021.27.03.041
Citation: ZHANG Chunshan, ZHANG Shuxuan, YANG Weimin, et al., 2021. Assessment of regional crustal stability in Shenfu New Area of Liaoning Province, China. Journal of Geomechanics, 27 (3): 453-462. DOI: 10.12090/j.issn.1006-6616.2021.27.03.041

辽宁省沈抚新区区域地壳稳定性评价

doi: 10.12090/j.issn.1006-6616.2021.27.03.041
基金项目: 

中国地质调查局地质调查项目 DD20190318

详细信息
    作者简介:

    张春山(1964-), 男, 研究员, 主要从事地质灾害、工程地质、地应力等方面研究工作。E-mail: zhangcs401@sina.com

  • 中图分类号: P694

Assessment of regional crustal stability in Shenfu New Area of Liaoning Province, China

Funds: 

the Geological Survey Projects of China Geological Survey DD20190318

  • 摘要: 在广泛收集资料和野外调查工作的基础上,经综合分析控制和影响区域地壳稳定性的主要因素和内外动力地质的耦合作用,基于ArcGIS平台采用多因素加权叠加分析方法开展了沈抚新区区域地壳稳定性评价研究。评价因素主要选取活动断裂、地震活动性和深部地球物理以及工程岩组、地形地貌与地表地质灾害等共12个影响因子,并依据评价因素的关联性和重要性进行分类赋值,进而建立了区域地壳稳定性评价模型。对沈抚新区的区域地壳稳定性进行了定量化评价。结果表明,沈抚新区以稳定区和次稳定区为主,面积为728.9 km2,占总面积的81.07%,有利于规划和建设。建议在地下工程穿越不稳定区和次不稳定区时,要采取必要的工程措施,确保基础和边坡的稳定性。规划的地铁9号线主要穿越次不稳定区和次稳定区。施工带在埋深15~25 m之间,该段地层主要为卵砾石堆积层、泥包砾堆积层与变质片麻岩强风化带及其交接部位,施工带处于地下水浸没带或变动带,其支护比较困难,建议尽早确定合理的施工方案,保障施工顺利和安全,此外还需要采取一定降水防腐措施。

     

  • 图  1  沈抚新区区域构造略图(据中国地震局官网, https://www.cea.gov.cn/cea/dzpd/zqsd-lsdz/index.html邓起东等,2002左建等,2003吴明大等,2004侯治华等,2006王声喜等,2008万波等, 2010资料,并结合野外调查修编)

    Figure  1.  Regional tectonic sketch of Shenfu New Area (Map is made based on the following data and modified according to field survey: https://www.cea.gov.cn/cea/dzpd/zqsd-lsdz/index.html, China earthquake administration; Deng et al., 2002; Zuo et al., 2003; Wu et al., 2004; Hou et al., 2006; Wang et al., 2008; Wan et al., 2010.

    图  2  沈抚新区及邻区工程地质与地质灾害分布图(据沈阳市地质灾害隐患点排查与复核成果报告(辽宁省环境监测总站,2014);抚顺市地质灾害隐患点排查与复核成果报告(辽宁省第十地质大队,2014);以及2019年野外实际调查资料编制)

    Figure  2.  Engineering geology and distribution map of geo-hazards in Shenfu New Area and adjacent areas (Map is made based on the following data and actual survey results in 2019:Liaoning Station for Geo-environment Monitoring, 2014; The 10th geological team of Liaoning Province, 2014.)

    图  3  沈抚新区区域地壳稳定性定量评价结果图

    Figure  3.  Results of quantitative assessment for regional crustal stability in Shenfu New area

    表  1  稳定性评价因素数据处理的分类赋值规则及权重表

    Table  1.   Rule of value assignment and weighted table for stability assessment factors in processing data

    稳定性分级 1极高 2较高 3中等 4较低 5极低 权值 代码
    活动断裂(垂距/m) >3200 1600~3200 800~1600 400~800 < 400 0.15 duanlie
    地震动峰值加速度/g < 0.05 0.05 0.10 0.15 >0.20 0.13 dizhen
    工程岩组 坚硬块状深变质岩岩组和侵入岩岩组 坚硬厚层状火山碎屑岩岩组和碳酸盐岩岩组 软硬相间层状碎屑岩、碳酸盐岩、浅变质岩组 软弱层状泥岩页岩和碎屑岩岩组 松散冲洪积物堆积层岩组 0.11 yanzu
    布格重力/×10-5m/s2 10~-10 -10~-30;10~30 -30~-50;30~50 -50~-70 -70~-90 0.09 zhongli
    地震活动强度(震级) <5 5~6 6~7 7~8 >8 0.12 dizhenq
    地形变/(mm/a) -2~2 -2~-4;2~4 -4~-7;4~7 -7~-10;7~10 -10~-25;10~12 0.07 xingbian
    水系(垂距/m) >3200 1600~3200 800~1600 400~800 < 400 0.06 shuixi
    斜坡坡度/(°) 0~5 5~10 10~15 15~25 25~61.43 0.07 podu
    斜坡高差/m 0~50 50~100 100~200 200~400 400~417 0.05 gaocha
    崩滑流灾点密度/(处/km2) < 0.02 0.02~0.08 0.08~0.17 0.17~0.27 0.27~0.46 0.08 bhl
    采空塌陷点密度/(处/km2) < 0.01 0.01~0.05 0.05~0.11 0.11~0.19 0.19~0.29 0.03 caikong
    地裂缝点密度/(处/km2) < 0.02 0.02~0.1 0.1~0.18 0.18~0.33 0.33~0.54 0.04 dlf
    赋值 1 2 4 7 10
    下载: 导出CSV

    表  2  沈抚新区区域地壳稳定性定量评价分区结果统计表

    Table  2.   Zoning results of the quantitative assessment of the regional crustal stability in Shenfu New area

    稳定程度 面积/km2 占全区面积比/%
    稳定区 454.74 50.58
    次稳定区 274.16 30.49
    次不稳定区 154.82 17.22
    不稳定区 15.36 1.71
    合计 899.08 100.00
    下载: 导出CSV
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  • 收稿日期:  2020-10-28
  • 修回日期:  2021-04-21
  • 刊出日期:  2021-06-28

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