Evaluating the impacts of mine dewatering and flooding on peatlands

评估矿山脱水和洪水对泥炭地的影响

基本信息

  • 批准号:
    RGPIN-2018-05468
  • 负责人:
  • 金额:
    $ 1.82万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2019
  • 资助国家:
    加拿大
  • 起止时间:
    2019-01-01 至 2020-12-31
  • 项目状态:
    已结题

项目摘要

Mining activities, which involve the mitigation of environmental impacts, are essential to the strong economic development of Canada. Nevertheless, the links between peatland degradation and mine dewatering/flooding are not well understood. This gap in environmental assessments can lead to major environmental and financial impacts. This program targets the pre-established issue. The long-term general objective is to develop novel approaches for evaluating the impacts of mine dewatering/flooding on peatlands. The specific objectives (SO) are (1) to assess the hydrological response of a peatland to mine dewatering, (2) to evaluate the geochemical response of a peatland to mine dewatering and (3) to simulate mine dewatering/flooding impacts on peatland hydrological and chemical balance. The targeted peatland is located near the Agnico-Eagle Akasaba-West site (Abitibi, QC), where open-pit mining is expected to begin in 2018/2019. SO1 (MSc1) focuses on establishing a water budget. Loggers will be installed in piezometer nests and in the acrotelm for monitoring water levels and temperature within the saturated and unsaturated peat. Discharge and temperature fluctuations in the stream connected to the peatland will also be monitored. The data will allow an unprecedented evaluation of the hydrological response of a peatland overlying a bedrock aquifer undergoing depressurization owing to mine dewatering. SO2 (MSc2) focuses on establishing a geochemical budget. The geochemistry of peat pore water (from piezometer nests) and stream samples will be monitored during one year. In situ physicochemical parameters (including Eh and pH) will also be monitored. The analytical program will focus on the evaluation of the concentration and speciation of three main redox and pH sensitive elements (Mn, Fe, As) and on their links with variations in the stable isotopes of water (2H, 17O, 18O) and in dissolved organic carbon contents. The geochemical and hydrological data will be interpreted jointly to evaluate the linkages between peatland hydrological and geochemical balance in an area affected by mine dewatering. SO3 (PhD1) focuses on modeling. Transient hydrological simulations will be carried out using SEEP/W. The speciation of As will be evaluated using PHREEQC and Geochemist's Workbench. The transport of As will be simulated using CTRAN/W. Simulations will be conducted following a systematic parametric approach for testing the impacts of various scenarios of mine dewatering/flooding on the peatland. The program will provide novel data needed to understand the sensitivity of peatlands to mining. The approach, coupling physical, chemical and isotopic data with modeling, is original and highly relevant for the mining industry and the scientific community. The targeted mining site is expected to start operating in 2018/2019: there is a unique opportunity to initiate the program synchronously.
采矿活动涉及减轻环境影响,对加拿大经济的强劲发展至关重要。然而,泥炭地退化和矿井脱水/洪水之间的联系还没有得到很好的理解。环境评估中的这一差距可能导致重大的环境和财政影响。该计划针对预先确定的问题。长期的总体目标是开发新的方法来评估矿山排水/洪水对泥炭地的影响。具体目标(SO)是(1)评估泥炭地对矿山降水的水文响应,(2)评价泥炭地对矿山降水的地球化学响应,(3)模拟矿山降水/洪水对泥炭地水文和化学平衡的影响。目标泥炭地位于Agnico-Eagle Akasaba-West场地(Abitibi,QC)附近,预计露天开采将于2018/2019年开始。战略目标1(MSc 1)的重点是建立水预算。记录器将安装在测压计巢和acrotelm中,用于监测饱和和非饱和泥炭内的水位和温度。还将监测与泥炭地相连的河流的流量和温度波动。这些数据将允许一个前所未有的评估水文响应泥炭地覆盖基岩含水层正在降压,由于矿井脱水。SO2(MSc 2)侧重于建立地球化学收支。将在一年内监测泥炭孔隙水(来自压力计巢)和溪流样本的地球化学。还将监测现场理化参数(包括Eh和pH值)。分析计划将侧重于评价三种主要氧化还原和pH敏感元素(Mn、Fe、As)的浓度和形态,以及它们与水的稳定同位素(2 H、17 O、18 O)和溶解有机碳含量变化的联系。将对地球化学和水文数据进行联合解释,以评价受矿井降水影响地区泥炭地水文和地球化学平衡之间的联系。SO 3(PhD 1)专注于建模。将使用SEEP/W进行瞬态水文模拟。砷的形态将使用PHREEQC和地球化学家的方法进行评估。用CTRAN/W模拟As的迁移。模拟将按照系统参数方法进行,以测试矿山排水/洪水对泥炭地的各种情况的影响。该计划将提供了解泥炭地对采矿的敏感性所需的新数据。这种方法将物理、化学和同位素数据与建模相结合,是原始的,与采矿业和科学界高度相关。目标采矿场预计将于2018/2019年开始运营:这是同步启动该计划的独特机会。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
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Rosa, Eric其他文献

Manganese removal processes and geochemical behavior in residues from passive treatment of mine drainage
  • DOI:
    10.1016/j.chemosphere.2020.127424
  • 发表时间:
    2020-11-01
  • 期刊:
  • 影响因子:
    8.8
  • 作者:
    Le Bourre, Bryce;Neculita, Carmen M.;Rosa, Eric
  • 通讯作者:
    Rosa, Eric
Occurrence of geogenic contaminants in private wells from a crystalline bedrock aquifer in western Quebec, Canada: Geochemical sources and health risks
  • DOI:
    10.1016/j.jhydrol.2018.02.042
  • 发表时间:
    2018-04-01
  • 期刊:
  • 影响因子:
    6.4
  • 作者:
    Bondu, Raphael;Cloutier, Vincent;Rosa, Eric
  • 通讯作者:
    Rosa, Eric

Rosa, Eric的其他文献

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{{ truncateString('Rosa, Eric', 18)}}的其他基金

Evaluating the impacts of mine dewatering and flooding on peatlands
评估矿山脱水和洪水对泥炭地的影响
  • 批准号:
    RGPIN-2018-05468
  • 财政年份:
    2022
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Discovery Grants Program - Individual
Evaluating the impacts of mine dewatering and flooding on peatlands
评估矿山脱水和洪水对泥炭地的影响
  • 批准号:
    RGPIN-2018-05468
  • 财政年份:
    2021
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Discovery Grants Program - Individual
Evaluating the impacts of mine dewatering and flooding on peatlands
评估矿山脱水和洪水对泥炭地的影响
  • 批准号:
    RGPIN-2018-05468
  • 财政年份:
    2020
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Discovery Grants Program - Individual
Traçage isotopique des sources et des flux de composés azotés d'un site minier
现场采矿过程中氮源成分和通量的同位素传输
  • 批准号:
    543544-2019
  • 财政年份:
    2019
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Engage Grants Program
Evaluating the impacts of mine dewatering and flooding on peatlands
评估矿山脱水和洪水对泥炭地的影响
  • 批准号:
    RGPIN-2018-05468
  • 财政年份:
    2018
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Discovery Grants Program - Individual
Traçage isotopique et modélisation couplée des cycles de l'eau et du carbone des grands bassins versants de l'est canadien (saint-laurent, baie d'hudson et labrador)
同位素传输和模型化耦合循环 de leau 和 du Carbone des grands bassins versants de lest canadien (saint-laurent, baie dhudson et labrador)
  • 批准号:
    348092-2007
  • 财政年份:
    2009
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Doctoral
Traçage isotopique et modélisation couplée des cycles de l'eau et du carbone des grands bassins versants de l'est canadien (saint-laurent, baie d'hudson et labrador)
同位素传输和模型化耦合循环 de leau 和 du Carbone des grands bassins versants de lest canadien (saint-laurent, baie dhudson et labrador)
  • 批准号:
    348092-2007
  • 财政年份:
    2008
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Doctoral
Traçage isotopique et modélisation couplée des cycles de l'eau et du carbone des grands bassins versants de l'est canadien (saint-laurent, baie d'hudson et labrador)
同位素传输和模型化耦合循环 de leau 和 du Carbone des grands bassins versants de lest canadien (saint-laurent, baie dhudson et labrador)
  • 批准号:
    348092-2007
  • 财政年份:
    2007
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Doctoral
Étude hydrogéologique du complexe tourbeux de Lanoraie
拉诺拉旅游综合体水文地质研究
  • 批准号:
    317604-2005
  • 财政年份:
    2005
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Master's

相似国自然基金

IMPACTS站点土壤铝活化机制研究
  • 批准号:
    40273045
  • 批准年份:
    2002
  • 资助金额:
    32.0 万元
  • 项目类别:
    面上项目

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