China Institute of Geological Environmental Monitoring

Hydration sequence controls polymer-induced water repellency and hydraulic response in illite-rich clay

Although geomaterial hydrophobisation is well established, the role of hydration sequence in polymer-induced water repellency of illite-rich clay remains insufficiently constrained. A butyl-acetate-assisted polydimethylsiloxane (PDMS) formulation was applied to a multi-mineral il...

Integrating Grid-Based Random Forest Predictions with Slope Units for Landslide Susceptibility Mapping

Landslide susceptibility mapping identifies terrain prone to slope failure under comparable environmental and triggering conditions. Grid-based machine-learning outputs can be spatially fragmented and difficult to translate into slope-scale mitigation. We developed a two-stage gr...

A segmented surrogate model for THMC responses in the near-wellbore zone of super-long gravity heat pipes

The super-long gravity heat pipe, as an emerging technology for deep geothermal exploitation, has attracted considerable attention owing to its "pumpless" heat extraction feature. The heat extraction process involves complex coupled thermal-hydraulic-mechanical-chemical (THMC) Mu...

Landslide Susceptibility Assessment Using a Machine Learning Model with VAE-CDM Sample Augmentation: A Case Study of Southeastern Xizang

Landslide susceptibility mapping in alpine regions with limited data has two persistent obstacles: too few recorded landslide cases and the questionable reliability of non-landslide samples. We address these issues with a hybrid generative framework—a Variational Autoencoder (VAE...

Identification of Unstable Rock Blocks and Rockfall Hazard Assessment on a Karst Steep Rock Slope Using UAV Photogrammetry

Steep rock slopes are widely distributed in the karst mountainous regions of southwestern China, where structurally controlled rockfalls frequently threaten transportation infrastructure and human safety. Accurate identification of unstable rock blocks (URs) and quantitative asse...

Mechanism of lateral resistance in obliquely inclined bedding rockslides: a case study of the Shanyang rockslide

Obliquely inclined bedding rockslides are prone to severe casualties and great economic loss for its less visible apparent dip slide. The lateral resistance is key to understanding the failure mechanism of obliquely inclined bedding rockslides. Nevertheless, few studies have cond...

Seepage and Stability Analysis of Loess Landslides Under the Coupled Effects of Long-Term Irrigation and Fissures

Long-term agricultural irrigation in the loess platform region of Northwest China has raised the groundwater level and triggered numerous irrigation-induced loess landslides. The widely developed fissures in loess provide preferential pathways for irrigation water infiltration an...