Effect of Underground Coal Mining on Slope Morphology and Soil Erosion

Underground coal mining will cause large-scale surrounding rock movement, resulting in surface subsidence and irreversible deformation of surface morphology, which would lead to geological disasters and ecological environment problems. In this paper, FLAC3D numerical model is built based on the natu...

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Main Authors: Liu Ning, Zhao Xiao-Guang, Song Shi-Jie, Zhou Wen-Fu
Format: Article
Language:English
Published: Hindawi Limited 2019-01-01
Series:Mathematical Problems in Engineering
Online Access:http://dx.doi.org/10.1155/2019/5285126
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spelling doaj-ab20147e647a4949ae0298c62935aaae2020-11-25T01:22:05ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472019-01-01201910.1155/2019/52851265285126Effect of Underground Coal Mining on Slope Morphology and Soil ErosionLiu Ning0Zhao Xiao-Guang1Song Shi-Jie2Zhou Wen-Fu3College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaCollege of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaCollege of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaCollege of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaUnderground coal mining will cause large-scale surrounding rock movement, resulting in surface subsidence and irreversible deformation of surface morphology, which would lead to geological disasters and ecological environment problems. In this paper, FLAC3D numerical model is built based on the natural slope gradient, slope type, and included angle between the slope and working face, and their influences on the change of surface morphology and soil erosion caused by underground coal mining is studied. Research results show that the change of slope gradient caused by underground mining decreases with the increase of natural slope gradient, while slope length has opposite laws; different slope types have different changes of slope morphology. The order of slope types corresponding to gradient changes is mixed slope < uniform slope < concave slope < convex slope; the length of the concave and uniform slope decreases, and the convex and mixed slope length increases. When the included angle between the slope and working face is 0° ≤ α < 90°, the underground mining will cause the natural slope gradient increase, the change of the slope gradient will increase with the rise of the angle, the slope length will decrease, and the rate of decrease will be reduced with the increase of the angle. Coal mining will cause the increasing of the runoff and erosion modulus of slope, mainly runoff modulus.http://dx.doi.org/10.1155/2019/5285126
collection DOAJ
language English
format Article
sources DOAJ
author Liu Ning
Zhao Xiao-Guang
Song Shi-Jie
Zhou Wen-Fu
spellingShingle Liu Ning
Zhao Xiao-Guang
Song Shi-Jie
Zhou Wen-Fu
Effect of Underground Coal Mining on Slope Morphology and Soil Erosion
Mathematical Problems in Engineering
author_facet Liu Ning
Zhao Xiao-Guang
Song Shi-Jie
Zhou Wen-Fu
author_sort Liu Ning
title Effect of Underground Coal Mining on Slope Morphology and Soil Erosion
title_short Effect of Underground Coal Mining on Slope Morphology and Soil Erosion
title_full Effect of Underground Coal Mining on Slope Morphology and Soil Erosion
title_fullStr Effect of Underground Coal Mining on Slope Morphology and Soil Erosion
title_full_unstemmed Effect of Underground Coal Mining on Slope Morphology and Soil Erosion
title_sort effect of underground coal mining on slope morphology and soil erosion
publisher Hindawi Limited
series Mathematical Problems in Engineering
issn 1024-123X
1563-5147
publishDate 2019-01-01
description Underground coal mining will cause large-scale surrounding rock movement, resulting in surface subsidence and irreversible deformation of surface morphology, which would lead to geological disasters and ecological environment problems. In this paper, FLAC3D numerical model is built based on the natural slope gradient, slope type, and included angle between the slope and working face, and their influences on the change of surface morphology and soil erosion caused by underground coal mining is studied. Research results show that the change of slope gradient caused by underground mining decreases with the increase of natural slope gradient, while slope length has opposite laws; different slope types have different changes of slope morphology. The order of slope types corresponding to gradient changes is mixed slope < uniform slope < concave slope < convex slope; the length of the concave and uniform slope decreases, and the convex and mixed slope length increases. When the included angle between the slope and working face is 0° ≤ α < 90°, the underground mining will cause the natural slope gradient increase, the change of the slope gradient will increase with the rise of the angle, the slope length will decrease, and the rate of decrease will be reduced with the increase of the angle. Coal mining will cause the increasing of the runoff and erosion modulus of slope, mainly runoff modulus.
url http://dx.doi.org/10.1155/2019/5285126
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