Rotational landslide and Translational landslide
Slides A slide is a downslope movement of a soil or rock mass occurring on surfaces of rupture or on relatively thin zones of intense shear strain. The movement does … Read More
Seismic wave
A seismic wave is a vibration generated by an earthquake, explosion, or similar energetic source and propagated within Earth or along its surface. Earthquakes generate four principal types of elastic … Read More
Sedimentary rock
Sedimentary rock is formed at or near the Earth’s surface by the accumulation and lithification of sediment (detrital rock) or by the precipitation from solution at normal surface temperatures (chemical … Read More
Slope design
The designing for example roads was usually based on the conventional technique of balancing cut and fills with the slope gradient of 1V:1H to 1V:1.5H for the cut areas and … Read More
Soil – Unsupported vertical trenches
Common problems The terms soil and earth are commonly referred to in the excavation process to describe the naturally occurring materials uncovered on a project. Soil conditions vary from one … Read More
Landslide – Rockfall and Topple
FallsA fall begins with the detachment of soil or rock, or both, from a steep slope along a surface on which little or no shear displacement has occurred. The material … Read More
Deep foundation
A deep foundation is a type of foundation that transfers building loads to the earth farther down from the surface than a shallow foundation does to a subsurface layer or … Read More
Sinkholes in Karst
With few exceptions, the ground collapses that constitute the karst geohazard in engineering activity in limestone terrains are induced by human activity. Subsidence sinkholes, formed entirely within the soil profile, … Read More
How coal was formed-3 types
What once had been plants gradually turned into coal. Millions of years ago, dead plant matter fell into swampy water and over time, a thick layer of dead plants lay … Read More
How Climate Change Will Affect Western Groundwater
Climate models This graphic shows various ways that water can reach and recharge a groundwater aquifer: precipitation that percolates directly down into the aquifer; recharge from streams or runoff; water … Read More