Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile

Open‐pit mines often generate large quantities of waste rocks that are usually stored in waste rock piles (WRPs). When the waste rocks contain reactive minerals (mainly sulfides), water and air circulation can lead to the generation of contaminated drainage. An experimental WRP was built at the Lac...

Mô tả chi tiết

Lưu vào:

Hiển thị chi tiết
Tác giả chính:	Dimech, A.
Đồng tác giả:	Chouteau, M.
Định dạng:	BB
Ngôn ngữ:	English
Thông tin xuất bản:	2020
Chủ đề:	Electrical resistivity tomography Three‐dimensional Flow control layer Volumetric water content Waste rock pile
Truy cập trực tuyến:	http://tailieuso.tlu.edu.vn/handle/DHTL/9709
Từ khóa:	Thêm từ khóa bạn đọc Không có từ khóa, Hãy là người đầu tiên gắn từ khóa cho biểu ghi này!

id	oai:localhost:DHTL-9709
record_format	dspace
spelling	oai:localhost:DHTL-97092020-11-10T07:37:16Z Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile Dimech, A. Chouteau, M. Aubertin, M. Bussière, B. Martin, V. Plante, B. Electrical resistivity tomography Three‐dimensional Flow control layer Volumetric water content Waste rock pile Open‐pit mines often generate large quantities of waste rocks that are usually stored in waste rock piles (WRPs). When the waste rocks contain reactive minerals (mainly sulfides), water and air circulation can lead to the generation of contaminated drainage. An experimental WRP was built at the Lac Tio mine (Canada) to validate a new disposal method that aims to limit water infiltration into reactive waste rocks. More specifically, a flow control layer was placed on top of the pile, which represents a typical bench level, to divert water toward the outer edge. Hydrogeological sensors and geophysical electrodes were installed for monitoring moisture distribution in the pile during infiltration events. A three‐dimensional (3D) time‐lapse hydrogeophysical monitoring program was conducted to assess water infiltration and movement. Readings from the 192 circular electrodes buried in the WRP were used to reconstruct the 3D bulk electrical resistivity (ER) variations over time. A significant effort was devoted to assessing the spatiotemporal evolution of water ER because the bulk ER is strongly affected by water quality (and content). The water ER was used as a tracer to monitor the infiltration and flow of resistive and conductive waters. The results indicate that the inclined surface layer efficiently diverts a large part of the added water away from the core of the pile. Local and global models of water infiltration explaining both bulk and water ER variations are proposed. The results shown here are consistent with hydrogeological data and provide additional insights to characterize the behavior of the pile. https://acsess.onlinelibrary.wiley.com/doi/10.2136/vzj2018.05.0098 2020-11-10T07:37:16Z 2020-11-10T07:37:16Z 2019 BB 1539-1663 http://tailieuso.tlu.edu.vn/handle/DHTL/9709 en Vadose Zone Journal, Volume 18, Issue 1 (2019), pp.1-19
institution	Trường Đại học Thủy Lợi
collection	DSpace
language	English
topic	Electrical resistivity tomography Three‐dimensional Flow control layer Volumetric water content Waste rock pile
spellingShingle	Electrical resistivity tomography Three‐dimensional Flow control layer Volumetric water content Waste rock pile Dimech, A. Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile
description	Open‐pit mines often generate large quantities of waste rocks that are usually stored in waste rock piles (WRPs). When the waste rocks contain reactive minerals (mainly sulfides), water and air circulation can lead to the generation of contaminated drainage. An experimental WRP was built at the Lac Tio mine (Canada) to validate a new disposal method that aims to limit water infiltration into reactive waste rocks. More specifically, a flow control layer was placed on top of the pile, which represents a typical bench level, to divert water toward the outer edge. Hydrogeological sensors and geophysical electrodes were installed for monitoring moisture distribution in the pile during infiltration events. A three‐dimensional (3D) time‐lapse hydrogeophysical monitoring program was conducted to assess water infiltration and movement. Readings from the 192 circular electrodes buried in the WRP were used to reconstruct the 3D bulk electrical resistivity (ER) variations over time. A significant effort was devoted to assessing the spatiotemporal evolution of water ER because the bulk ER is strongly affected by water quality (and content). The water ER was used as a tracer to monitor the infiltration and flow of resistive and conductive waters. The results indicate that the inclined surface layer efficiently diverts a large part of the added water away from the core of the pile. Local and global models of water infiltration explaining both bulk and water ER variations are proposed. The results shown here are consistent with hydrogeological data and provide additional insights to characterize the behavior of the pile.
author2	Chouteau, M.
author_facet	Chouteau, M. Dimech, A.
format	BB
author	Dimech, A.
author_sort	Dimech, A.
title	Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile
title_short	Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile
title_full	Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile
title_fullStr	Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile
title_full_unstemmed	Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile
title_sort	three‐dimensional time‐lapse geoelectrical monitoring of water infiltration in an experimental mine waste rock pile
publishDate	2020
url	http://tailieuso.tlu.edu.vn/handle/DHTL/9709
work_keys_str_mv	AT dimecha threedimensionaltimelapsegeoelectricalmonitoringofwaterinfiltrationinanexperimentalminewasterockpile
_version_	1768589599226986496

Three‐Dimensional Time‐Lapse Geoelectrical Monitoring of Water Infiltration in an Experimental Mine Waste Rock Pile

Tài liệu tương tự