Abstract Water–rock interaction (WRI) is a topic of interest in geology and geotechnical engineering. Many geological hazards engineering safety problems are severe under the WRI. This study focuses on water weakening rock strength its influencing factors (water content, immersion time, wetting–drying cycles). The mass decreases to varying degrees with cycles depending type mineral composition....

Groundwater quality degradation is a major threat to sustainable development in Texas. The aim of this study was to elucidate spatiotemporal patterns of groundwater fluoride (F) contamination in different water use classes in 16 groundwater management areas in Texas between 1960 and 2010. Groundwater F concentration data were obtained from the Texas Water Development Board and aggregated over a...

In terms of target detection and classification, scattering from exposed rock on the seafloor, (i.e., individual rocks and rock outcrops) presents some of the most difficult challenges for modern MCM and ASW sonar systems in shallow water. Work on characterizing, modeling and simulating mean levels, and other statistical measures of acoustic scattering from rocks and rock outcrops is therefore ...

In terms of target detection and classification, scattering from exposed rock on the seafloor, (i.e., individual rocks and rock outcrops) presents some of the most difficult challenges for modern MCM and ASW sonar systems in shallow water. Work on characterizing, modeling and simulating mean levels and other statistical measures of acoustic scattering from rocks and rock outcrops is therefore c...

To clarify the factors affecting stability of deep-buried hydraulic tunnels containing pore water, elastoplastic theory and Mogi-Coulomb strength criterion were used to derive analytical solutions stress on surrounding rock-lining structure, tunnel wall displacement, plastic zone radius in rock under different operating conditions. During this process, seepage effect interaction considered. The...

Thermal conductive heating (TCH) is an innovative remediation technology developed for aggressive in-situ non-aqueous phase liquid (NAPL) source zone treatment. Electrical heater wells are used to conductively transfer heat into the subsurface, thereby elevating temperatures and boiling both ground water and NAPLs. The design of a TCH remediation system needs to consider the cooling effect of i...

Vapor-dominated geothermal systems are proposed to originate by downward extension (by the "heat pipe" mechanism) into hot dry fractured rock above a large cooling igneous intrusion. High temperature zones found by drilling are shallow parts of the original hot dry rock where the penetration of the vapor reservoir was limited, and hot dry rock may extend under much of these reservoirs. An earli...

Rock mass stability is often affected by water–rock interaction in underground engineering construction. Cretaceous sandstones have weak cementation, low strength and strong water-holding capacity, their rock easily weakened these activities. In this paper, the uniaxial compressive (UCS) tensile (TS) of weakly cemented from different sedimentary facies under natural saturated conditions were te...