Sand mining further erodes the coast, and ground water drainage to sustain human populations triggers land subsidence even as the sea level rises by around 5mm a year.
采砂业也在进一步侵蚀着河岸，而人类的地下水开采导致地面沉降，与此同时，海平面正以每年5毫米的速度上升。
Subsurface pipe drainage in drought-prone region is superior to surface drainage in draining off water and salt, controlling ground water-level, and increasing crop output, etc.
以明沟排水为对照，论述了内陆干旱重盐碱区暗管排水在排水排盐、控制地下水位、提高土壤脱盐效果及提高作物产量等方面的优越性。
And municipal water supply and drainage pipe is erected on the ground, if there are problems, will give the city the normal production and life bring serious effect.
且市政给排水工程的管网架设在地下，一旦出现问题，会给城市正常的生产和生活带来严重的影响。
The main concept is to access and exit the Museum of Delos with three long concrete slabs Bridges over a reservoir that will collect mostly rainy water during the winter and drainage in the ground.
主要概念为通过三座混凝土板长桥出入唯一的提洛岛博物馆，桥下面建有水库，可收集地面的排水和冬季的大部分雨水。
A curtain grouting blocking technique was used for treating ground collapse and possible lake water entering mine pits due to drainage during mining.
为防止该矿采矿疏干导致地表大面积塌陷，甚至可能引起附近湖水倒灌矿坑，经多次技术论证后，采用了帷幕注浆堵水方案进行治理。
A set of algorithms for extracting drainage network from digital elevation model (DEM) based on ground water overflow model is introduced.
介绍基于地表径流漫流模型从数字高程模型(dem)提取水系的一系列算法。
Under the natural drainage conditions of the mine shafts, the water level of the 4th aquifer lowers considerably. Thence, large area of ground subsidence occurs.
在矿井自然疏水条件下第四含水层(底含水层)水位大幅度下降，随之发生地表大面积沉降。
Under the natural drainage conditions of the mine shafts, the water level of the 4th aquifer lowers considerably. Thence, large area of ground subsidence occurs.
在矿井自然疏水条件下第四含水层(底含水层)水位大幅度下降，随之发生地表大面积沉降。
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