临界水位

地层的固结特性与地面沉降临界水位控沉

Characteristics of Strata Consolidation and Land Subsidence Controlling by Critical Water Level

而第Ⅳ、Ⅴ承压含水层由于地下水位目前已严重低于其“临界水位”，表现为持续压缩的塑性变形。

In contrast , the 4 ~ ( th ) and 5 ~ ( th ) confined aquifers were featured with continuous plastic deformation , revealing the groundwater levels are far below the critical water level .

根据地面沉降与地下水头的关系求地面沉降临界水位

To Determine Critical Water Level by Correlation between Land Subsidence and Groundwater Drawdown

同时以大坝综合渗透率是否随时间增大为标准，提出了监控大坝渗流稳定的临界水位，对实际运行监控有一定意义。

At same time , the critical water level is proposed in accord with the trend of seepage flow of dam .

909系列防回流阀的设计结构使得安全阀的临界水位位于第一止回阀下方。

The 909 Series backflow preventer is designed so that the critical level of the relief valve is positioned below the first check .

在分析以往研究不足的基础上，首次提出了地面沉降成灾临界水位的概念及一般确定方法。

Based on the previous research , the concept of " disaster causal critical water table " and its general identification method are propounded for the first time .

通过模型实验，研究粘土体裂缝中的水流规律，提出了临界水位上升速度的概念。

The present paper tries to study through model experiments the law governing the waterflow in clay fractures and proposes the concept of the critical rising rate of the waterhead .

在库水位下降的过程中，其稳定性演变趋势呈下降型，开始时稳定性系数下降幅度较大，在临界水位达到最低点后，其降幅明显变缓，其稳定性基本呈稳定状态。

The water level dropped in the process of evolution trend of decreasing its stability type , start O ' clock decrease stability factor greater critical water level the lowest point in the post , its decline significantly slowing down , its stability was basically stable .

植被盖度减少始于草本植物盖度受损，与群落多样性受损的临界地下水位相同，发生在地下水埋深大于4m；

The decrease of vegetation coverage was due to decline of herbaceous coverage . The threshold depth of groundwater level for coverage degradation was 4 m. This depth was the same as the depth of groundwater for degradation of species diversity .

结果显示，当含水层的瞬时应力变化值大于临界值时，水位的异常图像为阶变形态；

While the instantaneous stress variation of aquifer is more than the critical value , the change pattern of water level anomaly is leap .

当含水层的瞬时应力变化值小于临界值，但某一时段的累计值大于临界值时，水位的异常图像为缓变形态。

If the instantaneous stress variation of aquifer is less than the critical value , but accumulation of stress variation of aquifer is more than the critical value in the course of time , water level anomaly is gentle .