Results 71 to 80 of about 13,828 (262)

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

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
wiley   +1 more source

Numerical Investigation into the Evolution of Groundwater Flow and Solute Transport in the Eastern Qaidam Basin since the Last Glacial Period

Geofluids, 2018
A complete understanding of groundwater circulation as well as the transport and distribution of solutes in arid-semiarid basin regions is a prerequisite for the safe use of groundwater resources.
Qichen Hao, Chuan Lu, Yuchen Zhu, Yong Xiao, Xiaomin Gu   +4 more
doaj   +1 more source

Probabilistic characterization of seepage‐induced tunnel face failure via a two‐phase double‐point material point method

Deep Underground Science and Engineering, EarlyView.
To address seepage‐induced tunnel face collapse, this study develops a two‐phase double‐point MPM framework to capture large‐deformation hydro‐mechanical interactions. Incorporating a cementation‐based constitutive model with dynamic permeability updates, the model is successfully validated against saturated granular‐column collapse experiments ...
Yue Tong, Mingliang Zhou, Jie Xu, Zeyu Li, Yisheng Zhao, Jin An, Hongwei Huang   +6 more
wiley   +1 more source

Analysis of lining force transmission coefficient and surrounding rock displacement in lined rock caverns for underground gas storage

Deep Underground Science and Engineering, EarlyView.
This study derives an explicit expression for the lining force transmission coefficient of underground gas storage lined rock caverns (LRCs) via the complex variable function method, considering the displacement release coefficient. Taking the 1‰ tensile strain of surrounding rock as the criterion to determine lining thickness, it systematically ...
Yaohui Li, Jianping Yang, Weizhong Chen
wiley   +1 more source

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source

Renewable energy mapping in Northeastern Morocco: A geographic information system‐based comparison of geothermal, solar, and wind potential in the Guercif‐Guilliz and Beni Snassen regions

Deep Underground Science and Engineering, EarlyView.
The graphical abstract summarizes a geographic information system (GIS)‐based synthesis of renewable energy resources in Northeastern Morocco, focusing on the Guercif‐Guilliz and Beni Snassen areas. It visually presents the spatial distribution of solar irradiation and wind energy potential derived from available datasets, alongside their relationship ...
Meryem Redouane, Hind Khalis, Faouziya Haissen, Othman Sadki, Hicham El Asmi, Abdelbarie Redouane   +5 more
wiley   +1 more source

Challenges in Implementing European Regulation on Water Reuse for Sustainable Agriculture

Environmental Policy and Governance, EarlyView.
ABSTRACT The Regulation (EU) 2020/741 on minimum requirements for water reuse is a key policy for sustainable water management under growing water scarcity in Europe. This paper examines expert perspectives on the challenges involved in implementing EU regulation for water reuse in agriculture, aiming to broaden existing research, which is largely ...
Patricia Allgaier, Roberta Maffettone, Kevin Grecksch   +2 more
wiley   +1 more source

Climate change effects on submarine groundwater discharge and regional variations along the Korean Peninsula

Communications Earth & Environment
Climate change impacts fresh submarine groundwater discharge on the Korean Peninsula, increasing the vulnerability of coastal regions to environmental degradation and economic consequences.
Hahn Chul Jung, Yeosang Yoon
doaj   +1 more source

Response characteristics of groundwater level dynamics to precipitation based on continuous wavelet-cross correlation analysis: A case study of the Guiyang karst basin

Carsologica Sinica
Precipitation is the main source of water supply for most groundwater systems; therefore, its spatiotemporal distributions will, to some extent, determine the dynamic characteristics of groundwater levels.
Ying WANG, Xiaoqing SONG, Fei WANG, Qin PENG, Zhendong CAO, Xiuchao PU   +5 more
doaj   +1 more source

Comment on “Appropriate Boundary Condition for Dupuit‐Boussinesq Theory on the Steady Groundwater Flow in an Unconfined Sloping Aquifer With Uniform Recharge” by Wu et al.

Water Resources Research, 2019
By neglecting unsaturated flow, Wu et al. (2018, https://doi.org/10.1029/2018WR023070) claimed that the zero volumetric discharge at the upstream boundary results in two possible boundary conditions of either zero groundwater table or zero seepage ...
Jun Kong, Jie Sun, Zhaoyang Luo, Chengji Shen, Guofen Hua, Chunhui Lu   +5 more
doaj   +1 more source