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Suitability and applicability of standpipe piezometer for seepage pressure monitoring of embankment dams———Discussion on Opinions of two issues in seepage pressure monitoring

ZHANG Guo-dong and WANG Hong   

  • Online:2008-08-28 Published:2008-08-28

测压管在土石坝渗流监测中的适用性探讨——兼与《对大坝渗压监测中两个问题的看法》商榷

张国栋,王宏   

  1. 水利部大坝安全管理中心,江苏南京 210029

Abstract: To study the suitability and applicability of standpipe piezometer, the issue of selection between embedded consolidation apparatus and standpipe piezometer in the paper Opinions of two issues in seepage pressure monitoring was discussed here. The conclusion was gotten that the standpipe piezometer was suitable in the area of gradually varied seepage flow instead of rapidly varied seepage flow area. As well, it clearly defined the integrated time lag. It was suggested that embedded consolidation apparatus should be selected for seepage pressure monitoring in the soils with low permeability and area of rapidly varied seepage flow.

摘要: 针对《对大坝渗压监测中两个问题的看法》中的“土石坝采用埋设渗压计方式还是测压管方式”论点及其结论进行讨论,旨在探讨测压管在土石坝渗流监测中的适用性?认为测压管适用于“渗流缓变区”的渗流压力监测,而不适用于“渗流急变区”的监测,同时明确了渗流“综合滞后时间”等相关问题,认为在土石坝“渗流急变区”,尤其是渗透系数小?水位变幅大的“渗流急变区”的渗流压力监测应采用渗压计,不宜采用测压管?