• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium on Land Subsidence(SISOLS 2005) vol.1; 20051023-28; Shanghai(CN) >DESIGN OF LAND SUBSIDENCE MONITORING NETWORK: A CASE STUDY AT TAIYUAN, SHANXI, CHINA
【24h】

DESIGN OF LAND SUBSIDENCE MONITORING NETWORK: A CASE STUDY AT TAIYUAN, SHANXI, CHINA

机译：地面沉降监测网络设计-以山西太原市为例

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Land subsidence occurred at Taiyuan after the 1960s, with an affected area of about 548 km~2. The biggest subsidence center is located at Wujiabao where the maximum accumulated settlement reached up to 2.96 m and the average subsidence rate was 63 mm/a. The major characteristics of land subsidence in Taiyuan are as follows: (1) Four centers of land subsidence were delineated, and the subsidence of each center is different from each other. (2) The subsidence rate has been increased from 1956 to 2000. (3) The distribution of the four subsidence centers is controlled evidently by local groundwater withdrawal and soil layer distribution. Further studies indicate that the groundwater withdrawal process is related to the formation and development of land subsidence, the distribution of groundwater depression cones well correspond to that of land subsidence centers, and the soil layer distribution has effects on the deviation of the subsidence center from the groundwater depression cone. In view of the characteristics of land subsidence, the following principles should be followed in designing the subsidence monitoring network: (1) the financial state of Taiyuan City should be considered; (2) the important monitoring areas should be separated from the ordinary monitoring areas, being respectively in the center and the margin of each subsidence area; (3) the monitoring should be developed at different depths and the compression amount of each soil layer should be obtained; (4) the monitoring work should be continuous. According to above principles, a leveling pillar and four layered mark boreholes were set up at Wujiabao where the land subsidence was the most serious, which can form the leveling network with the bedrock benchmark in Jinci. Moreover, we have reselected the monitor wells from all existent wells to make groundwater level monitoring point corresponding with land subsidence monitoring point. Especially, the matching water level monitoring boreholes to layered marks were constructed in Wujiabao. In this study, the layered marks technology was introduced firstly in Taiyuan for land subsidence monitoring. Land subsidence information system should be established and new technologies such as GPS and InSAR are applied at Taiyuan for land subsidence monitoring.
机译：1960年代后，太原发生了地面沉降，受灾面积约548 km〜2。最大的沉降中心位于吴家堡，最大沉降量达2.96 m，平均沉降速率为63 mm / a。太原市地面沉降的主要特征如下：（1）划定了四个地面沉降中心，每个沉降中心的沉降互不相同。 （2）沉降速率从1956年增加到2000年。（3）四个沉降中心的分布明显受到局部地下水抽取和土壤层分布的控制。进一步的研究表明，地下水的抽采过程与地面沉降的形成和发展有关，地下水沉降锥的分布与地面沉降中心的分布非常吻合，土壤层的分布对沉降中心偏离地面的影响很大。地下水低压锥。针对地面沉降的特点，设计沉降监测网络时应遵循以下原则：（1）考虑太原市的财务状况； （2）重要监测区域应与普通监测区域分开，分别位于每个沉降区域的中心和边缘； （3）监测应在不同深度进行，并应获得各土层的压缩量； （4）监测工作应连续进行。根据以上原则，在地面沉降最严重的吴家堡设置了找平支柱和四层标志性钻孔，可以与晋ci基岩基准形成找平网络。此外，我们从所有现有井中重新选择了监测井，以使地下水位监测点与地面沉降监测点相对应。特别是，在吴家堡建造了与分层标记相匹配的水位监测钻孔。在这项研究中，首先在太原引入了分层标记技术来进行地面沉降监测。应建立地面沉降信息系统，并在太原应用GPS和InSAR等新技术进行地面沉降监测。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号