The idea of an engineering geoenvironment refers to the interrelated multicomponent system of rock, water, air, and organisms related to engineering in the surface and upper crust. In the investigation and evaluation of engineering, analyzing the geoenvironment is an important preliminary area of study in determining the suitability of the project site, a process that should help to determine abnormal geological structures such as fracture zones, faults, aquifers, and karst (e.g., karst-caves and underground rivers) which may produce serious casualties and/or economic losses.

In recent years, an increasing number of engineering geological problems caused by geofluids have concerned scholars and engineers. These concerns include collapse, landslides, debris flow, water and mud inrush, etc. Geofluids can deteriorate the geological environment, and the deteriorated geoenvironment can make the likelihood of geological disaster more significant. Therefore, the interactions of geofluids, underground structures, and engineering geoenvironments are challenging and pressing issues which need to be further studied.

Accordingly, this Special Issue will present recent advances in the interactions of geofluids and the engineering geoenvironment. We invite you to submit original research papers and review articles.

Potential topics include but are not limited to the following:

• Deformation and instability of slope under pile-soil-water interaction
• Seepage stability under earthquake of landslide damming
• Advances in geological prospecting of abnormal geological structures in tunnelling engineering
• Deformation characteristics of landslides under long-term periodic reservoir water level fluctuation
• Risk assessment, mitigation, and prevention of water and mud inrush in underground space development
• Development and utilization of geothermal resources
• Seepage and sealing of fissure and pore water under the condition of multi-field coupling
• Case studies of underground engineering structures in complex hydrogeological conditions