However, the underground water lowering, which takes place in the water bearing layer in chief, has the inevitable influence on the surface subsidence.
矿区地下水位降低的主要原因为承压水通过采动裂隙向下渗流、煤层开采前顶板岩溶含水岩层的疏干以及地面人为钻井取水。
Effects of pre-compaction and dewatering on dynamic consolidation of soft subsoil;
预夯和降低地下水位对强夯效果的研究
This paper discusses a few pumping devices which are used in dewatering, with special emphasis upon discussing their type, working principle and characteristics.
讨论在建筑施工中利用轻型井点系统降低地下水位施工时 ,几种人工降低地下水位的方法及适用条件 ,并讨论了轻型井点系统中抽水设备的类型、工作原理及特点 ,总结选用真空引水罐抽水设备具有简单、经济、管理方便等优点 ;同时对在应用中如何利用理想气态方程和伯努力方程计算真空罐容积作以阐述 。
Ground water is lowered by the drainage which can be caused by any deep excavation.
任何一种深的挖方都能造成排水现象从而使地下水位降低。
The water table has been lowered by drought.
地下水位因乾旱已降低.
drawdown [groundwater]
水位下降〔地下水〕
The city's water table also drops markedly every year;
每年城市的地下水位也在明显降低。
The Unconventional Method of Researching to Reduce Ground Water Level of the Main Channel
非常规方法降低主渠道地下水位的探讨
To let, bring, or move down to a lower level.
降下让降到一低水平，带到或移到低方位
depression curve
(地下水位的)降落曲线
fall or drop to a lower place or level.
下沉或下降到一个较低的位置或水平。
Lack of rain sank the reservoirs.
缺雨使水库水位降低。
Water tables are falling throughout the northern half of China.
中国的北半部，地下水位普遍下降。
Groundwater lowering in construction : a practical guide
建筑物中地下水位的下降 实践指南.
In areas prone to salinization-alkalization and water-logging, measures shall be taken to control and lower groundwater table.
在容易发生盐碱化和渍害的地区，应当采取措施，控制和降低地下水的水位。
A lowering of the water level in a reservoir or other body of water.
池降水库或其它水体的水位降低
Slow degradation of ground water quality may result from repeated use.
循环使用地下水可以导致缓慢的水质降低。
However, the ground water table tends to descend, accounting for 62% of the cities and regions.
但地下水水位总的发展趋势仍以下降为主，下降区比例高达62%。
Discussion on usage of rainwater to improve water table decline of cities;
利用雨水改善城市地下水位下降现状的探讨
Research on causes and countermeasures of groundwater level drop in the Shiyang River Basin
石羊河流域地下水水位下降原因及对策研究
decline to a lower status or level.
降到一个低的地位或降低身份。