Engineering structures are of great importance in the comfort and safe travel people who prefer highway existing transportation networks. Highway tunnels one most important engineering that easily overcome problems. This study investigates geological geotechnical Kırık tunnel on Erzurum-Rize route, makes rock mass classification required for excavation according to New Austrian Tunneling Method...

Focal choroidal excavation (FCE) was first reported as a choroidal posteriorly excavated zone without any scleral change. Choroidal excavation also divided into conforming and nonconforming type. Numerous reports demonstrated association between FCE and other disease such as choroidal neovascularization and central serous choroidoretinopathy. Here, we report a rare case of FCE in a patient with...

Automation of excavation work calls for a robotic system able to perform the planned digging work, and responsive to interaction forces experienced during excavation. The development of automated excavation control method requires a dynamic model to describe the evolution of the excavator motion with time. The joint torques of the boom mechanism are generated by hydraulic rams which also affect...

Original scientific paper In order to obtain the skewed pressure characteristics, the physical model tests, adopting two kinds of excavation sequences of the bench method and the expanding method, were conducted under the different confining pressures for observation thermal radiation characteristics of the skewed pressure induced by step-by-step excavation for a double-arch tunnel. Firstly, un...

Exploration of planets has significant chances of discoveries e.g. discovery of new substances, as well as finding keys to the origin of our planet. However, some terrains are poorly explored, especially the underground ones. Thus, we have developed underground explorers that use peristaltic crawling of an earthworm for a propulsion part and an earth auger (EA) for an excavation. In this paper,...

Tunnel Boring Machines (TBMs) are used for tunneling and underground construction, by excavating material subsequently installing a segmental concrete tunnel liner support. However, unknown ground conditions pose significant risk to operations any damage the machine can be disastrous project. There is need tools which look ahead of TBM potential hazards during tunneling, such as water saturated...

The paper presents the use of tablet pc in archaeology, it explains what is a tablet PC and the steps to draw archaeological remains using a digital photomosaic. It’s described the test made during the experience in the roman town Grumentum in South Italy (2006). The use of a tablet pc in archaeological excavation is a powerful tool for digital documentation. This work explains a method to take...