随着植被覆盖面的消失，每次雨季都将更多的宝贵的表土层冲到湖里去。
With the tree cover gone, every rainy season sees more of the precious topsoil washed away into the lake.
黄土易被风刮起并带至远处方才落下成为表土层。
Loess is easy borne by the wind and may be carried long distances before it falls to earth and becomes topsoil.
实践证明，利用井点降水法通过特大含水表土层是一种技术经济可行的科学方法。
Passing through the especially big watery stratum is economic and effective by using the well point method.
针对深厚表土层中冻结钻孔存在的钻孔深、偏斜率难控制等施工存在的问题，提出了一些施工与管理的经验。
It is difficult to control the hole and the slope during frozen drill in profundity surface soil, this text bring forward some experience of management and construction.
当土壤水吸力增大到一定值时，中间土层的土壤非饱和导水率反而大于底土层和表土层。
While the soil water suctions increased to some values, the unsaturated hydraulic conductivities in middle soil layers were higher than those in topsoil layers.
结果表明：人为加速侵蚀主要引起表土层细菌、放线菌、真菌数量减少，其中以真菌下降率最高。
The results show that man made accelerated erosion decreases the Numbers of bacteria, fungi and actinomyces, among which fungi was affected drastically.
保护地表土层对于保护草地资源和生态环境，以及沙漠化防治具有极端重要性。
The protection of top soil layer has utter most importance in protection of grassland resources and ecosystem, and in prevention of sandy desertification.
随着我国煤矿开采深度的不断加大，对深厚表土层立井井壁所使用的高性能混凝土的强度、耐久性等性质的要求也越来越高。
With the increasing depth of coal mining in China, there is an immediate need to improve the strength and durability of high performance concrete used in deep topsoil mine shafts.
论述了斜井掘进穿越具有膨胀性的含水表土层过程中所采用的技术方案，指出支护结构的整体稳定性是支护成功的关键。
The paper reports the support technique of inclined shaft crossing surface soil with swelling and watering, in this case the stability of whole support system is key factor for successful control.
在风的作用下，地表上部空气的强制对流和表土层中的水分蒸发大大增强，对冻土层的热状况产生重要的影响。
Under the action of wind, forced convection of air above ground and water evaporation of top soil layer will be greatly enhanced.
封场覆盖系统是垃圾卫生填埋场建设的重要组成部分，覆盖系统包括气体导排层、土工膜、排水层、植被表土层。
Closure cover system is one of important parts of landfill site construction, it includes landfill gas discharge guiding layer, geotechnical film, drainage layer and plant cover surface soil layer.
论述静压预制桩压桩力对地表土层和下卧软土层承载能力的要求。
The demand of bearing capacity on the surface soil and soft foundation should be met for the static pressure fabricated pile.
本文对立井冻结段深厚表土层施工技术措施作了简要介绍，对立井深厚粘土层施工中出现问题进行分析探讨。
This paper introduced the technology and measures of shaft construction in thick clay strata, and analyzed the encountered problems.
分析了巨野矿区立井穿过厚表土层将要遇到的主要工程地质问题。
The main engineering geological which probably arise during the shaft building through the thick over soils are analyzed.
说明流域内地表土层溶蚀及人为污染影响的增强。土层孔隙水属强矿化水，而湖水呈现过渡特征。
The soil pore water belonged to strong mineralized water and the lake water presented transitional water.
取自中国东部区域的表土层孢粉数据被用来建立孢粉-气候转换函数。
Modern pollen data from surface samples, reflecting present vegetation types across the eastern part of China, were used to set up pollen climate transfer functions.
严重的水土流失不但可以导致生态环境恶化，而且对地表土层的破坏，会使土地的生产能力下降，影响农业生产。
The water and soil loss not only bring on entironment worsement, but also reduced the capacity of ground yield by destroy surface layer of soil.
地壳由半无限大的基岩上一层厚度为H的表土层组成，入射地震波为垂直的SH波，产生水平地面运动。
The crust is constituted by the rock and a surface layer of soil with depth H over it. The incident seismic wave is a vertical SH shear wave to cause horizontal ground motion.
本文阐述了丁集矿井成功的深厚表土层冻结技术，总结了深厚表土层冻结安全施工经验。
This paper introduces the successful freezing technology and construction experience of Dingji air shaft sinking in thick overburden.
本文阐述了丁集矿井成功的深厚表土层冻结技术，总结了深厚表土层冻结安全施工经验。
This paper demonstrates a successful freezing technology used in thick overburden of Dingji Mine, and sums up the experience of safe construction by freezing method in the thick overburden.
将高强混凝土用于深厚表土层立井井筒工程中，能满足我国不断加深的钻井和冻结井筒建设的需要。
The use of high strength concrete in shaft lining of depth soil might meet with the constructive need of frozen and boring shafts.
将高强混凝土用于深厚表土层立井井筒工程中，能满足我国不断加深的钻井和冻结井筒建设的需要。
The use of high strength concrete in shaft lining of depth soil might meet with the constructive need of frozen and boring shafts.
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