dam ›› 2013, Vol. 0 ›› Issue (1): 13-.

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Settlement monitoring of Hadashan homogeneous earth dam by the cascading soil displacement meter

LI Ke-mian, MA Hong-liang, PENG Li-bin, GAO Yin   

  • Received:2012-11-17 Revised:2012-12-18 Online:2013-03-01 Published:2013-03-01

通过串接土体位移计监测哈达山均质土坝的沉降

李克绵,马洪亮,彭立斌,高 垠   

  1. 中水东北勘测设计研究有限责任公司
  • 作者简介:李克绵(1964-),男,本科,高级工程师,副总工,研究方向为水利水电工程安全监测科研、设计与施工。

Abstract: Some problems encountered in regular monitoring of internal settlement deformation of an earth-rockfill dam, such as complicated process, difficult automatic control, freezing, air entrainment and blockage of the equipment tubes. In the design and construction of safety monitoring at Hadashan earth dam, all those problems above were solved and automatic monitoring was realized by using the settlement monitoring system made by displacement transfer bar cascading vibrating string soil displacement meter. In this paper, its working principle was introduced, the uncertainty of measurement was analyzed and the application effect was presented. Further, some suggestions on improvement were advanced.

 

Key words: homogeneous earth dam, settlement monitoring, cascading soil displacement meter, automatic monitoring

摘要: 土石坝内部分层沉降变形的常规监测方法存在观测过程复杂、不易纳入自动化控制及设备管路易冻结、掺气、堵塞等问题。在吉林省哈达山水利枢纽工程土坝安全监测设计和施工中,利用位移传递杆串接一组振弦式土体位移计组成一套沉降变形监测系统,解决了均质土坝内部沉降变形常规监测方法存在的问题,实现了自动化监测。并总结了该监测系统的工作原理,计算分析了测量不确定度,介绍了实际应用效果,提出了在今后使用过程中的改进建议。

关键词: 均质土坝, 沉降监测, 串接土体位移计, 自动化监测