Continuous tunneling using a tunnel-boring machine is very popular method when it comes to the construction of large tunnel projects. The use precast reinforced concrete elements, called tubbings, highly economical way secure post excavation. Unfortunately, loss load-bearing capacity has been observed in past joints between tubbings. Reasons for that are among others required reduction cross se...

Hydraulic machines used in mining and excavation applications are non-linear systems. Besides the nonlinearity due to the dynamic coupling between the different links there are significant actuator non-linearities due to the inherent properties of the hydraulic system. Optimal motion planning for these machines, i.e. planning motions that optimize a user-selectable combination of criteria such ...

In archaeological sites there are often several levels of ruins when the site has been constructed upon other ancient or prehistorical sites. It is very important for the archaeological research to map and monitor each step of the excavation. The traditional way for mapping of excavation is time consuming. Digital photogrammetry enables instead fast acquisition and processing of the data. Conti...

The expansion of underground structures is important in urban areas with high population density. In most large cities in the world, urban development is spreading along the structures. These structures are generally located at shallow depth; therefore study of shallow tunnels in urban areas is critical for development. During the excavation of tunnels in urban areas, creating the asymmetric se...

This study demonstrates a three-dimensional numerical simulation of earth pressure balance (EPB) shield tunnelling using coupled discrete element method (DEM) and finite difference (FDM). The analysis adopted the actual size spoke-type EPB tunnel boring machine (TBM) consisting cutter head with cutting tools, working chamber, screw conveyor, shield. For model to reproduce in situ ground conditi...

The TRANSLATION Framework for Archaeological Excavation Data: Transparent Negotiation and Sharing of Local Application Terminologies, Instances and Ontologies. A progress report submitted for continuation towards a PhD

With the growing population and density in metropolitan areas, higher tendency to live in high-rise buildings, and increasing demand for parking lots, it seems necessary to excavate soil to construct underground spaces. During excavation work, as the height of the wall increases, special care should be taken to the wall stabilization to avoid any consequent damage including extensive property d...

the valley of alamut is situated in the north – east of qazvin province. the region is an enclave in the form of a u shape valley in the central alborz chains and opening up to the fertile qazvin plains. the mountains of alamut were ideal for construction of castles. the natural heights contains a section of the defensive structure of the castles. in 1090 a.d, hassan sabbah , the leader of is...

We propose an excavation-type demining robot PEACE for farmland aiming at “complete removal” and “automation.”(Mori et al., 2003, Mori et al., 2005) The reason why we choose farmland as the demining area is as follows: farmland is such an area where local people cannot help entering to live, so it should be given the highest priority (Jimbo, 1997). PEACE is designed to clear APMs (anti-personne...