Using Ground Penetrating Radar to investigate spoil layers in rehabilitated minesoils
作者:
D.G. Paterson,
M.C. Laker,
期刊:
South African Journal of Plant and Soil
(Taylor Available online 1999)
卷期:
Volume 16,
issue 3
页码: 131-134
ISSN:0257-1862
年代: 1999
DOI:10.1080/02571862.1999.10634998
出版商: Taylor & Francis Group
关键词: Ground penetrating radar;mine rehabilitation;soil mapping;spoil material
数据来源: Taylor
摘要:
Opencast coal mining on the Highveld of Mpumalanga involves the disturbance of highly productive soils, which must then be rehabilitated on top of the mined spoil. Various problems in this process may occur, however, which may lead to water-logging, compaction and/or decreased soil volume. Ground penetrating radar (GPR) is a useful technique in the characterisation of the rehabilitated soil and in determining the depth contours of the spoil layer. Studies with GPR were conducted at three rehabilitated opencast coal mines. In most cases GPR was able to clearly detect the top of the spoil layer and thus identify the variations in soil depth covering the spoil. Three-dimensional imaging can be achieved by means of a grid system, thereby identifying basins which could cause waterlogging. Advantages in the use of GPR include its capacity for obtaining continuous imagery and penetration to greater depths than is possible by soil augering. Time, manpower and financial savings can be achieved, increasing the potential to improve post-mining agricultural conditions.
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