Reactive transport modeling of geology, quarrying, mining, and geological hazards

地质、采石、采矿和地质灾害的反应输运建模

• 批准号: 514066-2017
• 负责人: Woodbury, Allan
• 金额: $ 1.82万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640726
• 关键词: Reactive; transport; modeling; geology; quarrying

Gypsum deposits are well known in the Upper Amaranth Formation, west of Lake Manitoba and have beenused for several decades. However, gypsum readily dissolves when it comes in contact with water, enrichingthe soil and groundwater but literally can create holes in the gypsum formation. With increasing size of thesubsurface holes in the gypsum the ability to stabilize the overlying soil layer reduces so that sinkholes canform damaging the infrastructure. Sinkholes due to gypsum dissolution can be found in Canada and worldwide,e.g. RM of Alonsa, MB, Michigan, USA, and Asse-Heeseberg Ridge, Germany.In this proposed research, the main objective is to develop a geochemical model to estimate gypsumdissolution rates in the RM of Alonsa. The model will be used to predict areas which are prone to sinkholedevelopment utilizing three-dimensional reactive transport modeling of the shallow formations. The key totechnology transfer is the integration of reaction kinetics into a three-dimensional transport model. This kindof modeling is cutting-edge technology and will allow the industry partner Stantec to expand into reactivetransport modeling of geology, quarrying, mining, and geological hazards. This will allow them to developmore sophisticated models which are able to better protection the environment and which will allow Stantec tobid on more projects.

石膏矿藏在马尼托巴湖以西的上Amaranth组中广为人知，已被使用了几十年。然而，石膏与水接触时很容易溶解，丰富了土壤和地下水，但实际上也会在石膏地层中形成孔洞。随着石膏中次表面孔洞尺寸的增加，稳定上覆土层的能力降低，因此可能会形成破坏基础设施的天坑。美国密歇根州阿隆萨的Rm和德国的Asse-Heeseberg Ridge等地存在着因石膏溶解而形成的天坑。在这项拟议中的研究中，主要目的是建立一个地球化学模型来估计阿隆萨Rm的石膏溶解速率。该模型将利用浅层地层的三维反应运移模型来预测容易出现塌陷的地区。技术转移的关键是将反应动力学整合到三维传输模型中。这类建模是尖端技术，将使行业合作伙伴Stantec扩展到地质、采石、采矿和地质灾害的动态传输建模领域。这将使他们能够开发更复杂的模型，能够更好地保护环境，并将使斯坦泰克能够竞标更多的项目。