| Effects of ground fissure characteristics on soil physical properties in the dump |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2022.04.24 |
| Key Words: dump soil moisture ground fissure soil mechanical composition soil pore status saturated hydraulic conductivity |
| Author Name | Affiliation | | LI Yexin | School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, Liaoning 110870, China
College of Environmental Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China | | LV Gang | College of Environmental Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China | | WANG Daohan | College of Environmental Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China | | WANG Shuang | Tieling County Natural Resources Service Center, Tieling, Liaoning 112600, China | | LIU Shuang | Tieling County Natural Resources Service Center, Tieling, Liaoning 112600, China | | ZHU Su | Tieling City Natural Resources Service Center, Tieling, Liaoning 112000, China |
|
| Hits: 534 |
| Download times: 473 |
| Abstract: |
| Taking the south dump of the Shengli Dong No. 2 open\|pit coal mine of Datang international power generation company in Xilinhot City, Xilingol League, Inner Mongolia as the research site, the characteristics and differences of soil mechanical composition, pore status, spatial distribution of moisture, and saturated hydraulic conductivity with different ground fissures in the dump were studied. The results indicated that the soil texture in the ground fissures of the dump was sandy soil, which has the characteristics of loose texture, strong air and water permeability, and poor water storage capacity according to the international system of soil particle composition. The soil bulk density with the three plots was 1.22~1.45 g·cm-3, and it first increased and then decreased with the increasing of soil depth. The soil water content with the three plots was low and decreased with the increasing of soil depth. Soil saturated water content, field water holding capacity, and soil available water first decreased and then increased, and the wither coefficient first increased and then decreased, and there were significant differences between different soil layers. The saturated hydraulic conductivity of each soil layer (0~10、10~20、20~30、30~40、40~50、50~60 cm) with the three plots was 1.16, 1.02, 0.95, 0.71, 0.47, and 0.27 mm·min-1, respectively. There was a good power function relationship between the soil saturated hydraulic conductivity and soil depth. The physical properties changed with appearing of ground fissures, such as soil bulk density, pore status, and spatial distribution of soil moisture, which in turn affected soil erosion processes, such as infiltration, surface runoff, and runoff and sediment production in the dump. |
|
|
|