Coal and gas outbursts are a potentially fatal hazard that must be managed when mining gassy coal seams. Mining-induced stress plays an important role in outbursts, while elastic potential is accumulated to provide energy for outburst. In this study, large-scale true triaxial (LSTT) apparatus was developed conduct experiments understand the outburst mechanism mining-induced geo-stress evolution...

Abstract Rock mass quality mapping is essential in rock engineering and mining projects. However, the current manual approach its teaching are restricted due to dangerous nature of work near walls constraints resources. Therefore, a virtual reality learning system for remote was developed at Aalto University. Two wall sections an underground tunnel roadside rock-cut were scanned using photogram...

The Dolomites of northern Italy feature some the most intensively studied carbonate rocks worldwide. Yet, little is known about long karst history this mountain range dating back to Miocene. This study scrutinizes three caves (F10, Milchloch and Cioccherloch) in Fanes-Sennes-Prags Nature Park (Province South Tyrol) adjacent Fosses area Natural Ampezzo Belluno, Veneto). Paleo-phreatic passages t...

Micropiles are routinely used in the United States for foundation support and stabilization of slopes. In recent years, several retaining walls have been constructed using micropiles in an A-frame type configuration to support temporary and permanent excavations at sites with limited access and limited right-of-way. Typical A-frame micropile walls consist of a row of vertical micropiles at the ...

The composition and structure of the extracellular matrix (ECM) in the vascular wall and in the atherosclerotic plaque are important factors that determine plaque stability. Statins can stabilize atherosclerotic plaques by modulating ECM protein expression. Fibulins are important components of the ECM. We evaluated the in vitro effect of simvastatin on the expression of fibulin-1, -2, -4 and -5...

The goal of this thesis was to build a simple toy rock climbing robot, and to explore problems related to grasping, path planning, and robot control. The robot is capable of climbing a wall of pegs either under manual control through a host system and an infrared interface, or on the basis of a set of pre-recorded keyframes. In addition, the robot can climb certain peg configurations using a cy...

At first glance you might not notice anything odd on meeting a young boy with autism. But if you try to talk to him, it will quickly become obvious that something is seriously wrong. He may not make eye contact with you; instead he may avoid your gaze and fidget, rock his body to and fro, or bang his head against the wall. More disconcerting, he may not be able to conduct anything remotely rese...

Abstract Natural gas hydrate is mainly enriched in the low temperature and high pressure environment such as extremely cold permafrost zone polar continental shelf, which a renewable energy with great development value. The analysis of adhesion mechanical properties on surface rock mineral significance for correct evaluation effective control influence sedimentary layers. In this paper, an expe...