| 外包滤料对暗管排水与土壤脱盐效果的影响 |
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| 引用本文： | 王文旭,杨树青,胡玲玲,张万锋.外包滤料对暗管排水与土壤脱盐效果的影响[J].排灌机械工程学报,2023,41(4):425-432. |
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| 作者姓名： | 王文旭 杨树青 胡玲玲 张万锋 |
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| 作者单位： | 1. 内蒙古农业大学水利与土木建筑学院, 内蒙古 呼和浩特 010018;2.内蒙古师范大学旅游学院, 内蒙古 呼和浩特 010022 |
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| 摘 要： | 为了探究不同外包滤料条件下的暗管排水性能和土壤脱盐效果,基于室内试验研究成果,在田间设置4种暗管排水系统(各系统中暗管埋深均为80 cm,间距均为20 m),所用外包滤料分别为68 g/m2土工布(L)、砂滤料(S)、68 g/m2土工布+砂滤料(LS)和无外包滤料(W),以当地常规明沟排水(CK)作为对照,通过田间试验分析了春灌过程中各暗管系统的排水性能指标及土壤脱盐效率.结果表明:相比处理W,处理L,S和LS平均排水速率提升了7.44%,12.55%和15.75%,平均流量衰减度降低4.07%;处理S和LS累积排水量提高了5.11%和8.31%(P<0.05).各暗管处理春灌后平均土壤脱盐率均达47%以上,较CK提升显著,其中处理LS效果最优,为50.94%.综上,应优先选择处理LS作为河套灌区暗管排水系统外包滤料布设方案.该研究结果可为河套灌区暗管排盐技术的推广应用提供理论支撑和科学指导.
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| 关 键 词： | 排水暗管 外包滤料 春灌 脱盐率 排水性能 |
| 收稿时间： | 2021-07-20 |
Effect of outsource filter material on subsurface pipe drainage and soil desalination |
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| WANG Wenxu,YANG Shuqing,HU Lingling,ZHANG Wanfeng.Effect of outsource filter material on subsurface pipe drainage and soil desalination[J].Journal of Drainage and Irrigation Machinery Engineering,2023,41(4):425-432. |
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| Authors: | WANG Wenxu YANG Shuqing HU Lingling ZHANG Wanfeng |
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| Institution: | 1. Water Conservance and Civil Engineering College, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010018, China; 2. College of Tourism, Inner Mongolia Normal University, Hohhot, InnerMongolia 010022, China |
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| Abstract: | To explore the drainage performance of subsurface pipes and the effect of soil desalination under different outsourcing filter materials, based on the results of laboratory experiments, four kinds of subsurface drainage systems were set up in the field(the buried depth of the subsurface pipes in each system was 80 cm, and the spacing was 20 m), and the outer filter materials used were 68 g/m2 geotextile(L), sand filter material(S), 68 g/m2 geotextile + sand filter material(LS)and non-outsourcing filter material(W), with the local conventional open ditch drainage(CK)as a control, the drainage performance index and soil desalination efficiency of each subsurface pipe system in the spring irrigation process were analyzed through field experiments. The results show that compared with W treatment, the average drainage rate of L, S and LS treatments increased by 7.44%, 12.5% and 15.75%, and the average flow attenuation was reduced by 4.07%; the cumulative drainage volume of S and LS treatments increased by 5.11% and 8.31%(p<0.05). The average soil desalination rate after spring irrigation in each subsurface pipe system was above 47%, which was significantly improved compared with CK treatment. Among them, LS treatment had the best effect, which was 50.94%. In summary, LS treatment should be selected first as the outsourcing filter layout plan of the subsurface pipe drainage system in the Hetao irrigation area. The results of this research can provide theoretical support and scientific guidance for the popularization and application of salt drainage technology through subsurafce pipes in Hetao Irrigation District. |
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| Keywords: | subsurface drainage pipe outsourcing filter material spring irrigation desalination rate drainage performance |
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