| 1. | Subsurface drainage materials
地下排水材料 |
| 2. | The research of pavement subsurface drainage system in the seasonal freezing region
季节性冰冻地区路面结构内部排水系统浅论 |
| 3. | Standard specification for circular - knit geotextile for use in subsurface drainage applications
地下排水设施用圆形织法的土工织物的标准规范 |
| 4. | Analysis of spatial variability of soil characteristics and crop yield under subsurface drainage
暗管排水条件下土壤特性和作物产量的空间变异性分析 |
| 5. | Standard specification for 12 to 60 in . 300 to 1500 mm annular corrugated profile - wall polyethylene pipe and fittings for gravity - flow storm sewer and subsurface drainage applications
自流式雨水管和地下排水装置用12至60英寸300 to 1500 mm环形波纹状异型壁聚乙烯管和配件的标准规范 |
| 6. | Based on the construction of the atpb test section on weifu road in kaifeng , henan , some construction experiences have been summarized to ensure the drainage effect of subsurface drainage system
基于河南开封尉扶路的沥青稳定碎石排水基层试验路的修筑，通过对现场摊铺碾压的施工控制，进一步积累了施工经验。 |
| 7. | Finally , this paper brings forward the mix integrated design method of asphalt treated permeable material incorporating the results of structure analyses and tests . and the rational proposal and requirement for pavement subsurface drainage system of test road is suggested
结合结构分析与室内试验分析的结果，提出了沥青稳定碎石排水层混合料的综合设计方法，并实际运用于试验路的结构设计和排水系统设计。 |
| 8. | The purpose of this web site is to share my experiences with workers in any country on water logging in agricultural lands , irrigation induced soil salinity , subsurface drainage for agriculture ( horizontal and vertical ) , reuse of groundwater , ground - water hydraulics , ( geo ) hydrology , rainfall and surface runoff relations , reclamation and improvement of water logged saline , salty , sodic alkaline , and acid sulphate soils , plant growth , crop production and responses as well as statistical analysis consisting of segmented linear regression and cumulative frequency distributions
描述:探讨农业耕地的水涝问题；灌溉导致的土壤盐碱化；地表灌溉；地下水的再利用；地下水水力学；雨水与水流失的关系；浅地表排水；土壤开垦及水涝，酸性，碱性土壤的改良；片段线形回归和累积频数分布的统计分析等。 |
| 9. | It is commonly recognized that subsurface drainage system can improve pavement performance and extend service life . as an essential part of subsurface drainage system , the layer setting and characteristics of asphalt treated permeable material directly affect the performance of subsurface drainage system , which is lucubrated in this paper . based on the typical semi - rigid pavement without permeable layer , using multilayer elastic system program , rational pavement structure with permeable layer at different locations is first analyzed
本文以高等级公路沥青路面的典型结构形式作为未设排水层的路面结构原型，通过不同的设置层位分析对排水层的回弹模量和厚度的要求，探讨设置排水层的路面结构的一些结构参数适宜的取值范围，并在此基础上运用灰色系统关联分析方法，对不同设置层位的路面结构的技术指标进行比较分析，得出较优的层位设置方案。 |
