Stream Sealing to Reduce Surface Water Infiltration into Underground Mines

1988 ◽  
Vol 1988 (1) ◽  
pp. 232-239 ◽  
Author(s):  
T. E. Ackman ◽  
J. R. Jones
Keyword(s):  
Surface Water ◽  
Water Infiltration ◽  
Underground Mines

scholarly journals A New Conceptual Model for Slope-Infiltration

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 678 ◽  
Author(s):  
Renato Morbidelli ◽  
Corrado Corradini ◽  
Carla Saltalippi ◽  
Alessia Flammini ◽  
Jacopo Dari ◽  
...  
Keyword(s):  
Surface Water ◽  
Conceptual Model ◽  
Soil Type ◽  
Unsolved Problem ◽  
Threshold Value ◽  
Water Velocity ◽  
Water Infiltration ◽  
Infiltration Process ◽  
Wide Range ◽  
Steep Slopes

Rainfall infiltration modeling over surfaces with significant slopes is an unsolved problem. Even though water infiltration occurs over soil surfaces with noticeable gradients in most real situations, the typical mathematical models used were developed for infiltration over horizontal surfaces. In addition, recent investigations on infiltration over sloping surfaces have provided conflicting results, suggesting that our understanding of the process may still be lacking. In this study, our objective is to specifically examine if the surface water velocity that is negligible over near horizontal soil surfaces can affect the infiltration process over steep slopes. A new conceptual model representing a wide range of experimental results is proposed. The model represents water flow as an ensemble of infinitesimal “particles” characterized by specific velocities and assumes that only “particles” with velocity less than a threshold value can contribute to the infiltration process. The velocity distribution and the threshold value depend on slope and soil type, respectively. This conceptual model explains observed results and serves as a foundation for developing further experiments and refining models that offer more realistic representations of infiltration over sloping surfaces.

scholarly journals Using Wavelet Coherence to Characterize Surface Water Infiltration into a Low‐Lying Karst Aquifer

Ground Water ◽  
2020 ◽  
Author(s):  
Philip Schuler ◽  
Èlia Cantoni ◽  
Léa Duran ◽  
Paul Johnston ◽  
Laurence Gill
Keyword(s):  
Surface Water ◽  
Karst Aquifer ◽  
Water Infiltration ◽  
Wavelet Coherence

scholarly journals Assessment of river water infiltration conditions based on both chloride mass-balance and hydrogeological setting: the Krajkowo riverbank filtration site (Poland)

Geologos ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 35-41
Author(s):  
Jozef Gorski ◽  
Krzysztof Dragon ◽  
Roksana Kruc-Fijalkowska ◽  
Magdalena Matusiak
Keyword(s):  
Surface Water ◽  
River Water ◽  
Water Infiltration ◽  
Riverbank Filtration ◽  
Superficial Zone ◽  
Well Production ◽  
Lower Chloride ◽  
Average Contribution ◽  
Strong Erosion ◽  
Chloride Concentrations

Abstract In the present work measurements of chloride concentrations were used to assess the variability of infiltration conditions and contributions of surface water and local groundwater to the discharge of wells at Krajkowo riverbank filtration site (western Poland). Tests were performed on samples from 26 wells located in a well gallery close to the River Warta. Due to higher chloride concentrations in river water in comparison with local groundwater, significant differences in concentrations in samples from individual wells were noted. In particular, lower chloride concentrations in 11 wells were recorded, which can be linked to the local occurrence of low-permeability deposits in the superficial zone; a locally higher degree of riverbed sediment clogging in the highly convex meandering zone, where strong erosion of the riverbed occurred, which in turn led to increased clogging; the occurrence of a more intensive groundwater inflow into the river valley due to water infiltration from a smaller river entering the River Warta valley, as well as unfavourable conditions for the infiltration of surface water to the lower part of the aquifer with a greater thickness. Differences in chloride concentrations observed were also used to quantify approximately river water contribution to the well production. The average contribution of the River Warta to the recharge of the entire well gallery was estimated at 59.8%.

scholarly journals Identification of pollution sources in closed mining sites with an Impact on the quality of surface water in the Brad area

2021 ◽  
Vol 342 ◽  
pp. 03012
Author(s):  
Emilia-Cornelia Dunca ◽  
Tiberiu Rusu ◽  
Dorin Iancu
Keyword(s):  
Surface Water ◽  
Large Scale ◽  
Mining Operation ◽  
Point Sources ◽  
Underground Mines ◽  
Mining Sites ◽  
Surface Activities ◽  
Large Scale Disturbance ◽  
Gold Silver

Pollution caused by closed mining activities is particularly difficult to treat because it dates back a very long time. Water contamination results from large-scale disturbance of the land on which the underground exploitation of the useful mineral substance took place. Discharges from underground mines can be treated as diffuse point sources; water quality is due to reactions that occur in an area that can cover tens of square kilometres. The main sources are groundwater, which increases after the pumping is stopped, and tailings stored in dumps and tailings ponds. When the mine closes, the pumps are stopped and the groundwater level rises until it reaches the surface or discharges into the aquifers above. Although discharges from wells and galleries are often the most visible sources, surface activities such as mineral processing, tailings and waste disposal are also a significant source of pollution. The river is located on the Barza gold-silver ore mining operation took place. The runoff waters present in this perimeter can transport contaminated sediments, where the tailings dumps are washed away by precipitation. The paper aims to identify the sources of surface water pollution in the Barza closed mining site that influences the quality of surface water.

Reactivation of a huge ancient landslide by surface water infiltration

2019 ◽  
Vol 16 (4) ◽  
pp. 806-820 ◽  
Author(s):  
Guo-xiang Tu ◽  
Da Huang ◽  
Hui Deng
Keyword(s):  
Surface Water ◽  
Water Infiltration ◽  
Ancient Landslide

Effects of Hillslope Trenching on Surface Water Infiltration in Subalpine Forested Catchments

Hydrology ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 147
Author(s):  
Matthew C. LaFevor ◽  
Carlos E. Ramos-Scharrón
Keyword(s):  
Surface Water ◽  
Meteorological Data ◽  
Field Measurements ◽  
Water Infiltration ◽  
Human Consumption ◽  
Rainfall Runoff ◽  
Soil Infiltration ◽  
Infiltration Capacity ◽  
Forested Catchments ◽  
Total Runoff

Concerns over freshwater scarcity for agriculture, ecosystems, and human consumption are driving the construction of infiltration trenches in many mountain protected areas. This study examines the effectiveness of infiltration trenches in a subalpine forested catchment in central Mexico, where public and private organizations have been constructing trenches for ~60 years. We rely on empirical data to develop rainfall-runoff models for two scenarios: a baseline (no trenches) and a trenched scenario. Field measurements of infiltration capacities in forested and trenched soils (n = 56) and two years of meteorological data are integrated into a semi-distributed runoff model of 28 trenched sub-catchments. Sensitivity analysis and hydrographs are used to evaluate differences in total runoff and infiltration between the two scenarios. Multiple logistic regression is used to evaluate the effects of environmental and management variables on the likelihood of runoff response and trench overtopping. The findings show that soil infiltration capacity and rainfall intensity are primary drivers of runoff and trench overtopping. However, trenches provided only a 1.2% increase in total infiltration over the two-year period. This marginal benefit is discussed in relation to the potential adverse environmental impacts of trench construction. Overall, our study finds that as a means of runoff harvesting in these forested catchments, trenches provide negligible infiltration benefits. As a result, this study cautions against further construction of infiltration trenches in forested catchments without careful ex ante assessment of rainfall-runoff relationships. The results of this study have important implications for forest water management in Mexico and elsewhere, where similar earthworks are employed to enhance runoff harvesting and surface water infiltration.

Failure Mode of Karst Water under Inclined Coal Seam Mining in Hilly Area

2012 ◽  
Vol 599 ◽  
pp. 732-738
Author(s):  
Guang Hua Yao ◽  
Zheng Hua Chen ◽  
Chang Peng Tu ◽  
Xi Qiong Xiang ◽  
Sheng Xu
Keyword(s):  
Surface Water ◽  
Coal Seam ◽  
Failure Mode ◽  
Main Type ◽  
Mining Subsidence ◽  
Water Infiltration ◽  
Karst Water ◽  
Hilly Area ◽  
Subsidence Area ◽  
Seam Mining

Using special hydrogeology survey, groundwater level observation, water pressure test, pit infiltration test, imaging well log technique and Hertz wave CT in the mining subsidence area and its nearby, failure mode of karst water under inclined coal seam mining in hilly area is studied. Contrasted surface infiltration capacity of limestone in 1955 with in 2011, it verifies that aquicludes and aquifers above goaf and near ground are damaged, therefore karst water in different aquifers become a unified water-bearing body. In the mining subsidence area, karst water forms a cone of depression, and water-bearing body of underground karst water supplied by vertical seepage is the main type of surface water infiltration. Outside of mining subsidence area, the surface water and the karst water are supplied by each other, and overland flow is the main type of surface water.

scholarly journals MAPPING POTENTIAL AREAS OF GROUND SUBSIDENCE IN ESTONIAN UNDERGROUND OIL SHALE MINING DISTRICT

1999 ◽  
Vol 1 ◽  
pp. 227
Author(s):  
Ingo Valgma
Keyword(s):  
Surface Water ◽  
Oil Shale ◽  
Underground Mining ◽  
Underground Mines ◽  
Ground Subsidence ◽  
Mining Institute ◽  
Mining District ◽  
Oil Shale Mining ◽  
Mine Workings ◽  
Technical University

Northeast part of Estonia has been subject to oil shale mining since 1916. Oil shale as main source for power industry in Estonia is mined in amount of 12 million tonnes per year. The underground production rate is about 6 million tonnes of the mineral annually. Currently three open casts and six underground mines are operating, hi past 6 underground oil shale mines have been closed. Totally 979 million tonnes of rock, including oil shale has been mined underground. Today, about 305 km2 area has 512 million m3 abandoned mine workings in the depth of 10 to 70 m below the surface. The problem is influence of underground mining and mine workings on ground subsistence and ground- and surface water regime.Mapping of potential areas of ground subsidence started in the Mining Institute of Tallinn Technical University with Maplnfo Professional. GIS is used because of need for locating the tunnels in current geographic situation. As database for digitizing and scanning, available mine maps and drawings are used. Fieldwork is included for recognizing collapse areas in nature. For further analyses, Maphlnfo features and additionally, Vertical Mapper are used.In future groundwater problems will be included in the study. The study is partially supported by Tallinn Technical University by purchasing software Maplhifo. Estonian Mapping Centre has supported the study with making available to use base map of Estonia for reference.

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