疏浚土配制喷播绿化基质的配比试验研究

梅岭; 陈虞祥; 王雷; 夏宇昂; 陈正

doi:10.11835/j.issn.2096-6717.2021.059

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疏浚土配制喷播绿化基质的配比试验研究

土木工程 | 更新时间：2023-06-25

- 疏浚土配制喷播绿化基质的配比试验研究
- Experimental analysis on the ratio of green spraying substrate composed of dredging soil
- 土木与环境工程学报 2023年45卷第1期页码：135-144
- 作者机构：
  
  1.江苏科技大学土木工程与建筑学院,江苏镇江 212000
  2.河海大学岩土力学与堤坝工程教育部重点实验室,南京 210098
- 作者简介：
  
  梅岭（1982- ），男，副教授，主要从事边坡工程研究，E-mail：mling530@163.com。
- 基金信息：
- DOI：10.11835/j.issn.2096-6717.2021.059
  中图分类号： X705
- 收稿：2021-01-12，
  
  纸质出版：2023-02-25
- 稿件说明：
移动端阅览
梅岭, 陈虞祥, 王雷, 等. 疏浚土配制喷播绿化基质的配比试验研究[J]. 土木与环境工程学报, 2023,45(1):135-144.

MEI Ling, CHEN Yuxiang, WANG Lei, et al. Experimental analysis on the ratio of green spraying substrate composed of dredging soil[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 135-144.
梅岭, 陈虞祥, 王雷, 等. 疏浚土配制喷播绿化基质的配比试验研究[J]. 土木与环境工程学报, 2023,45(1):135-144. DOI： 10.11835/j.issn.2096-6717.2021.059.

MEI Ling, CHEN Yuxiang, WANG Lei, et al. Experimental analysis on the ratio of green spraying substrate composed of dredging soil[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 135-144. DOI： 10.11835/j.issn.2096-6717.2021.059.

摘要

航道疏浚土与日俱增，利用疏浚土配制喷播基质用于坡面绿化，可以实现疏浚土的资源化利用。以疏浚土为主要试验材料，采用L

)正交试验设计，在疏浚土中添加不同比例的聚丙烯酰胺（PAM）、高分子吸水性树脂（SAP）、稻草秸秆进行改良，并种植高羊茅进行盆栽试验，测定各试验组的物理结构特征、水分特征、化学性质、高羊茅出苗率等指标，分析PAM、SAP、稻草秸秆对疏浚土的影响，通过主成分分析法综合评价，得到基于疏浚土配制绿化喷播基质的配比。结果表明：在疏浚土中加入SAP能显著改善疏浚土的孔隙特性，降低土壤容重，提高疏浚土的持水能力；适量的PAM可以提高疏浚土中铵态氮的保留量，促进高羊茅种子的发芽，过量的PAM会抑制高羊茅种子的发芽；秸秆能显著提高疏浚土的养分含量，降低疏浚土的pH值；基质的最佳配比为每kg疏浚土内添加SAP 6 g、PAM 0.5 g、秸秆35 g。

Abstract

The dredged soil of waterway is increase day by day

and the utilization of dredged soild to make spray seeding matrix for slope greening can realize the resource utilization of dredged soil. The L

) orthogonal test design was adopted with dredged soil as the main test material

and different proportions of PAM

SAP and straw were added to the dredged soil for improvement

and tall fescue was planted for pot experiment. The physical structure characteristics

moisture characteristics

chemical properties and tall fescue emergence rate of each test group were measured. The effects of PAM

SAP and rice straw on the dredged soil were analyzed. Through the comprehensive evaluation of the principal component analysis method

the ratio of the green spraying substrate based on the dredged soil was obtained. The results show that adding SAP to the dredged soil can significantly improve the pore characteristics of the dredged soil

reduce the soil bulk density

and increase the water holding capacity of the dredged soil; an appropriate amount of PAM can increase the retention of ammonium nitrogen in the dredged soil and promote tall fescue seeds. Excessive PAM will inhibit the germination of tall fescue seeds; straw can significantly increase the nutrient content of the dredged soil and reduce the pH value of the dredged soil; the optimal ratio of the substrate is 6 g of sap

0.5 g of PAM and 35 g of straw per kg of dredged soil.

关键词

Keywords

references

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