Results 131 to 140 of about 81,852 (317)
Deep Underground Science and Engineering, EarlyView.B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza +4 more
wiley +1 more source
The Economics of Commonly Owned Groundwater When User Demand Is Perfectly Inelastic
This paper provides a theoretical analysis of the common-pool resource dilemma in extracting nonrenewable groundwater resources when water demand is perfectly inelastic.
Wang, Chenggang, Segarra, Eduardo
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Action of autochthonous bacteria on the decay of enteric viruses in groundwater
, 2006 With global freshwater supplies under pressure, viable water reuse methods are being examined to assist in improving water supplies. Municipal effluent is an ideal source for water reclamation as it is consistent in quality and quantity.
Wall, Katrina Joy
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Frontiers in WaterGroundwater resource management in drylands, characterized by climate variability and population growth, is difficult. Exploration and exploitation of groundwater, due to inadequate surface water is very costly. This study employed the analytic hierarchy
Abdulmutallib A. Saidu +4 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
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Measuring the Gains to Groundwater Management with Recursive Utility
Replaced with revised version of paper 07/20/05.Recursive Utility, Dynamic Games, Groundwater Policy, Resource /Energy Economics and Policy, D91, C73, Q25,
Msangi, Siwa
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Frontiers in WaterGroundwater is vital for agriculture in semi-arid regions like Kongwa District, where surface water is scarce and rainfall unstable. Despite its significance, detailed knowledge on groundwater distribution in such areas is often lacking, hindering ...
Faida Zacharia +2 more
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Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
, 2003 This guidance pertains to leaching tests conducted on contaminated soils, to determine the potential for groundwater contamination exceeding the standards in ch. NR 140- Groundwater Quality Standards, Wis. Adm. Code.
Groundwater Contamination Potential +2 more
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