Heat Flow and Underground Water Flow in the Coronation Mine area

The new railway line between Divača and Koper/Capodistria in south-western Slovenia is being built, a part of which crosses the southern outskirts of the Classical Karst plateaux. It will run through two tunnels, the northern tunnel T1 (6.7 km long) and the southern T2 (6 km long), which partially cross karst aquifer system. A multi-tracer test with injections of fluorescent dyes uranine and naphthionate, bypassing the karst vadose zone, was carried out to define the directions and dynamics of the underground water flow. The main goals were better understanding of the complex hydrogeological conditions in the area and assessment of possible environmental impacts on the nearby water sources. With tracing of uranine injected into a nearby cave stream, the direction of flow from the northern T1 tunnel mainly towards the Reka-Timavo aquifer system and further towards the Timava/Timavo springs was proved. The peak velocities, as determined from the peaks of the tracer breakthrough curves, range from 29 m/h to 36 m/h. Through the wider and well-connected conduits of the Reka-Timavo system, the peak velocities can reach up to 88 m/h. The recovery of uranine in an intermediate cave, i.e., Jama 1 v Kanjaducah, amounted to approximately 74 %. The northern section of the southern T2 tunnel is a part of a wider bifurcation zone between the Osapska Reka and the Boljunec/Bagnoli springs, where peak flow velocities between 10 and 13 m/h have been determined by tracing of naphthionate injected into a borehole located in the line of the planned tunnel. It has been estimated that about 25 % of the injected naphthionate flew out through the Osapska Reka spring and about 5 % through the Boljunec/ Bagnoli springs. Based on this research, proper monitoring of any potential negative impacts of the new railway line will be made possible. The study presents an approach to better planning of hazard control of traffic routes in complex and highly karstified rock settings.

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ESTIMATION OF MASS TRANSFER OF PRINCIPLE IONS, IRON, AND METHANE DURING THE DISCHARGE OF UNDERGROUND WATER OF THE QUATERNARY AQUIFER COMPLEX TO THE SEA OF AZOV

Meteorologiya i Gidrologiya ◽

10.52002/0130-2906-2021-10-104-115 ◽

2021 ◽

pp. 104-115

Author(s):

E. A. ZUBKOV ◽

◽

A. M. NIKANOROV ◽

D. N. GAR’KUSHA ◽

YU. A. FEDOROV ◽

...

Keyword(s):

Water Flow ◽

Underground Water ◽

Deterministic Models ◽

Catchment Basin ◽

Sulfate Ions ◽

Quaternary Aquifer ◽

Underground Waters ◽

Sulphate Chloride ◽

Quaternary Complex ◽

Aquifer Complex

The specificity of the chemical composition of underground waters of the Quaternary aquifer complex of the Azov sea catchment basin, which dominates the flow volume, is considered. Using deterministic models, the volumes of runoff of the main ions, common iron, and methane are calculated. The predominant ones are sulphate, chloride-sulphate or sulphate-chloride, less often bicarbonate and chloride waters, usually of a sodium or calcium cationic composition. The average annual volume of underground water flow in the Quaternary complex is about 0.024 km3/year (66,300 m3/day). The average annual value of underground ion runoff is ~387,000 t/year, with 47.2% of this value being accounted for by sulfate ions. The average annual underground runoff of total iron and methane is ~0.968 t/year and ~0.037 t/year, respectively. The dominant contribution (over 98%) to the volume of underground runoff of the main ions, common iron and methane is made by their runoff from the Northern sections of the sea catchment basin, which is mainly due to the distribution of the module of underground water flow.

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Use of Hydrodynamic Characteristics of The Underground Water Flow for Processing Single Pumping Data

10.3997/2214-4609.202152023 ◽

2021 ◽

Author(s):

S.N. Tagiltsev ◽

V.S. Tagiltsev ◽

S.V. Surganov ◽

A.A. Kurichenko

Keyword(s):

Water Flow ◽

Underground Water ◽

Hydrodynamic Characteristics

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Artifisial replenishment of the deep aquifers

E3S Web of Conferences ◽

10.1051/e3sconf/20184500025 ◽

2018 ◽

Vol 45 ◽

pp. 00025

Author(s):

Anatoly Hurynovich ◽

Valiantsin Ramanouski

Keyword(s):

Groundwater Recharge ◽

Water Flow ◽

Water Intake ◽

Electrical Energy ◽

Water Source ◽

Underground Water ◽

Pilot Studies ◽

Deep Aquifers ◽

Well Design ◽

Quality Water

On the basis of the analysis, laboratory and pilot studies that have been conducted, schemes of artificial replenishment of deep aquifers are proposed. These schemes allow a groundwater recharge in order to water intake with generate electricity using the energy of the water flow and provide clear water, which serves to replenish underground water. Experimental section of this technological scheme was designed and built in the region of water intake in Brest (Belarus), on which were carried out hydrogeological surveys. Based on the above results, it was suggested to use the energy of the water flow in a water-inject well to convert it into electrical energy. A method for artificial groundwater recharge, which simultaneously allows groundwater recharge to the target groundwater without expending energy, generation of electricity using the power of the water flow and produces high quality water through the use of ozonation, which serves to replenish the groundwater was proposed. This is achieved through the use of hydraulic ram pump water-lifting devices, combined with electric generators, and a device for water purification such as an ozone generator. The proposed scheme and well design also allows the removal of iron and manganese from underground water and can be organized by two options, depending on the water source.

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The development of cave passage in Donomulyo, Malang-Indonesia

E3S Web of Conferences ◽

10.1051/e3sconf/20197604010 ◽

2019 ◽

Vol 76 ◽

pp. 04010 ◽

Cited By ~ 1

Author(s):

Mohammad Ainul Labib ◽

Eko Haryono ◽

Sunarto

Keyword(s):

Water Flow ◽

Underground Water ◽

Coastal Areas ◽

Structural Factors ◽

Marine Terrace ◽

Passage Level ◽

Fourth Level ◽

Level 3 ◽

Level 1 ◽

Level 2

The cave passages formed in Donomulyo sub–district are formed in epigenic and hypogenic conditions in coastal areas. The dominant factors form the morphological condition of the cave passage that is the existence of structural factors, underground water flow, and tectonism that affect the condition of the passage. Structural factors form the existence of linement that affect the cave passage. Underground water flow forms a passage due to the change of vadose, epipreatic, and phreatic conditions. The existence of tectonism leads to the removal of limestone into several levels of cave passage development, in addition, there is the collapse of blocks, plates, talus, and sheets. The development of the cave passage level is also related to surface physiographic, which is connected to 5 levels with marine terrace, including 244–325 masl (level 1), 182–244 masl (level 2), 111–181 masl (level 3), 30–110 masl (level 4), and 0–29 masl (level 5). The development of fifth level shows that the level limit is located in the Sengik Cave, the fourth level is located in the Jebrot Cave, and the second level is located in the Banyu Cave, these three caves are the output of the underground rivers.

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