晋北露天煤矿区重构土壤容重差异研究：探地雷达识别与反演

doi:10.19741/j.issn.1673-4831.2020.0505

摘要/Abstract

摘要： 为揭示复垦地不同剖面重构土壤容重的总体特征和深度差异以及在雷达图像上的显示特征，以中煤平朔安太堡露天矿区南排土场、西排土场、西排土场扩大区和内排土场为研究对象，采用环刀采样称重法、探地雷达探测法、显著性分析法和拟合分析法等方法分析重构土壤容重差异，分析重构土壤容重差异在雷达图像上的显示特征，并根据探地雷达图像参数定量反演重构土壤容重数值。结果表明：（1）重构土壤容重差异明显，矿区不同排土场及其不同深度重构土壤容重存在差异。（2）针对不同排土场，根据电磁波大振幅信号分布情况，可定性分析重构土壤容重相对大小。（3）在土壤体积含水率小于15%条件下，将重构土壤容重（y）与相应介电常数（x）进行拟合得到拟合函数y=0.054 3x+1.019 2（R²=0.508 3，P=0.001），拟合效果可信，重构土壤容重随着介电常数的增大呈线性增加趋势。探地雷达在检测矿区复垦地重构土壤容重方面具有推广应用价值，对于快速无损土地复垦质量检测领域发展具有推动作用。

关键词: 土壤重构, 探地雷达, 重构土壤容重, 介电常数, 土地复垦

Abstract: To reveal the characteristics and differences of reconstructed soil bulk density in different profiles of the reclaimed land, the southern dump, western dump, expanded western dump and internal dump of the Antaibao open pit mine in Pingshuo were taken as the research objects, the differences of reconstructed soil bulk density were analyzed, and the relationship between dielectric constant and reconstructed soil bulk density was established by using the methods of ring knife sampling weighing, ground penetrating radar detection, variance analysis, and fitting analysis. The results show that:(1) The reconstructed soil bulk density had significant differences in different dumps and different depths of the same profile. (2) The differences of reconstructed soil bulk density in different dumps was qualitatively analyzed based on the large amplitude signal on the ground penetrating radar images. (3) The reconstructed soil bulk density (y) increased linearly with the change of the dielectric constant (x) when soil volumetric water content was less than 15%, and the fitting function was y=0.054 3x+1.019 2, R²=0.508 3, P=0.001. Ground penetrating radar has the popularization and application value in detecting reconstructed soil bulk density and the development of the non-destructive quality testing of land reclamation.

Key words: soil reconstruction, ground penetrating radar, reconstructed soil bulk density, dielectric constant, land reclamation

中图分类号:

X833

徐韩笑, 曹银贵, 罗古拜, 白中科. 晋北露天煤矿区重构土壤容重差异研究：探地雷达识别与反演[J]. 生态与农村环境学报, 2021, 37(1): 127-135.

XU Han-xiao, CAO Yin-gui, LUO Gu-bai, BAI Zhong-ke. Differences of Reconstructed Soil Bulk Density in Open Pit Coal Mine of Northern Shanxi Province: Based on Feature Identification and Inversion of Ground Penetrating Radar[J]. Journal of Ecology and Rural Environment, 2021, 37(1): 127-135.

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