Particle jet impact drilling technology is an efficient non-contact rock-breaking method to overcome slow drilling speed, which has great development and …

show that the loading rate plays an important role in the study of rock mechanical properties. Based on the theoretical relationship between microscopic crack growth and …

Until recently, published rates of incision of bedrock valleys came from indirect dating of incised surfaces. A small but growing literature based on direct …

To quantitatively analyze the strength of the brittle fracture of an engineering rock mass, based on the understanding of its failure phenomenon characterized by …

New information is presented on topics of current research interest, including inferences about chemical mechanisms at the level of mineral surfaces, and data relating …

When unweathered and unfractured, hard rocks such as granites, have low primary porosity and low hydraulic conductivity, whereas metamorphic rocks have lost …

Rate analysis of excavation in earthwork is the measure of quantity of excavation to be carried out, the cost of equipment, machineries and labors required.

new rate for eand cavation of hard rocks of the year 2012. Universal Orlando Snapshot: Current ride closures, park promotions - new rate for eand cavation of hard rocks of …

To investigate the time-dependent fracturing characteristics of surrounding rocks following excavation in hard rock engineering, it is essential to account for both …

The shadowgraphy and velocimetry experiments show that nozzle cavitation dominates the process, and it can be described by a modified cavitation number. Rock …