Numerical Evaluation of Grouting Scenarios for Reducing Water Inflows from Major Faults in Underground Excavations

Domingue, Catherine; Lemieux, Jean‐Michel; Grenon, Martin; Molson, John; Therrien, René; Lajoie, Pierre-Luc; Blessent, Daniela

doi:10.1007/s10230-019-00589-2

Cited by 8 publications

(2 citation statements)

References 10 publications

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“…By combining the numerical simulation of the underground water system with the study of dewatering in open-pit mining, the impact of curtain wall construction and open-pit mining on the dewatering intensity of the mining pit is predicted and analyzed [44]. On account of the site characteristics of the Éléonore mine, the inflow of water from two major faults under different grouting scenarios is designed and simulated [45]. By using the pumping test and groundwater numerical simulation method, the water inflow of iron ore surrounded by an incomplete grouting curtain is evaluated [46].…”

Section: Discussionmentioning

confidence: 99%

Prediction of the Mine Water Inflow of Coal-Bearing Rock Series Based on Well Group Pumping

Zhai,

Wang,

et al. 2023

Water

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Previous scholarly investigations have mainly concentrated on examining water intake, particularly within the specific domain of coal mines. Nevertheless, the scholarly discourse lacks significant research on predicting water inflow in environments with complex multi-layer mineral distributions. The Yanlong mining area is a complex mine containing coal and bauxite. Forecasting the water inflow of bauxite deposits is crucial for designing mining drainage and formulating a mining plan in a coal-bearing rock series mining area. The water inflow on the roof and floor of bauxite was studied with various numerical simulation and analytical methods (such as the big well method). The hydrogeological conceptual and numerical model of the mining area was established by the MODFLOW module in Groundwater Modeling System (GMS (7.1)) software, and the measured groundwater level was identified and verified in the model. The results show that the model average values of R2, Ens, and PBIAS are 0.86, 0.81 and 2.71, respectively, indicating that the established numerical simulation model can accurately forecast water inflow into the aquifer. Taking No. XII orebody in the eastern Songshan Mining area as an example, a virtual well group consisting of 12 wells was set up, and the numerical model forecast a water inflow of 71,500 m3/d from the Taiyuan Formation aquifer in the bauxite ore roof, which was lower than the value predicted by the large well method (72,786.66 m3/d). The numerical method predicted an average water inflow of 59,000 m3/d and a maximum water inflow of 82,600 m3/d from the Majiagou Formation in the bauxite ore floor. A dependence has been established that the numerical method estimates water inflow with accuracy. Additionally, the model predicts future mining water inflow, and also provides a standard framework for estimating inflow in similar mining conditions.

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Section: Discussionmentioning

confidence: 99%

Prediction of the Mine Water Inflow of Coal-Bearing Rock Series Based on Well Group Pumping

Zhai,

Wang,

et al. 2023

Water

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“…In order to effectively control the threat of water damage to China's mines, the Detailed rules for Coal Mine Water Prevention and Control have formulated a number of comprehensive water damage control measures. Grouting water plugging technology has become the most important treatment means for most of the present water damage mines [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Research and Numerical Simulation on Water Resistance Mechanism of Textile Bag in Water Passage

Yang

Zhu

et al. 2021

Geofluids

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It is an important problem in the mine water disaster prevention and control to control the large passage moving water. Traditional grouting technology is to put coarse aggregate and fine aggregate downward first and then grouting treatment. But the aggregate and cement flow distance is long, consumption is large, cost is high, and easy to appear secondary water inrush. Centering on the technical difficulties in the rapid construction of the blocking body of the moving water passage, a water-blocking textile bag was invented. The purpose of blocking the tunnel water inrush was achieved by grouting inside the bag body, which fundamentally realized the rapid blocking of the large passage through water under the condition of moving water. However, the mechanism, water plugging law, and design parameters of water blocking roadway with textile bag are still unclear. In this paper, the slip law and stability of the textile bag in the moving water and the deformation characteristics caused by the dynamic water pressure are theoretically analyzed and simulated. Through theoretical analysis, the ultimate antihydraulic stress value of a textile bag of a certain specification is calculated, and the parameters of the textile bag that affect the stability of the bag body are also determined. Xflow was used for numerical simulation analysis to study the deformation characteristics of the textile bag under water and the law of water barrier. The simulation analysis focuses on the water resistance effect and flow field distribution characteristics of the textile bag in the water passage under the condition of low flow rate and low pressure, as well as the stability and self-deformation characteristics of the textile bag under the condition of high flow rate and high pressure. The accuracy of the limit resistance to water pressure of the textile bag obtained from theoretical analysis is verified. The results show that the theoretical analysis is consistent with the simulation results. The textile bag can realize the fast controllable plugging of the large water passage of moving water within the limit of the antihydraulic stress.

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Design Theory and Physical Simulation Test Using a Textile Bag to Control Water Inrush in a Coal Mine Roadway

Yang

Zhu

et al. 2022

Mine Water Environ

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Numerical Evaluation of Grouting Scenarios for Reducing Water Inflows from Major Faults in Underground Excavations

Cited by 8 publications

References 10 publications

Prediction of the Mine Water Inflow of Coal-Bearing Rock Series Based on Well Group Pumping

Prediction of the Mine Water Inflow of Coal-Bearing Rock Series Based on Well Group Pumping

Theoretical Research and Numerical Simulation on Water Resistance Mechanism of Textile Bag in Water Passage

Design Theory and Physical Simulation Test Using a Textile Bag to Control Water Inrush in a Coal Mine Roadway

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