During the execution of works on construction tunnel Zenica, there is a certain number activities that can cause negative consequences for environment. In this regard, greatest danger represented by technological operations such as: mechanical excavation, blasting, deep excavations, destruction, and removal natural covering layer. Also, machines pose potential from spills or accidental oil deri...

The practice of deep-braced excavation in congested urban environments involves frequently buried pipelines, which can exert a significant effect on the performance excavation. objective this paper is to investigate 12.5-m-deep-braced spanned by two shallowly large-diameter pressurized pipelines. A suspension structure installed within protect situ pipelines during construction. investigated pe...

In order to research the theory for variety of transverse forces adjacent shield tunnels caused by foundation pits excavation, effect mechanism pit excavation on tunnel was analyzed. The sidewall unloading model pit, considering deformation retaining structures, introduced calculate additional stress soil excavation. On this basis, confining pressure variation established, influence longitudina...

Stepwise excavation is an old concept but has become a research subject more, in recent years. It is a conservative approach to treat deep dental caries lesions where the exposure of the pulp is probable. In case of pulpal exposure, Root Canal Therapy (RCT) is the routine treatment method. However, RCT is an expensive treatment, especially in countries like Iran where most of the dental treatme...

Taking a super large deep foundation pit project as an example, the horizontal displacement of crown beam and driveway, surface settlement, axial force anchor cable, underground water level in construction process are dynamically monitored analyzed. The excavation deformation rule influence on surrounding buildings results show that, with pit, driveway incline towards direction eventually tend ...

This study investigated the influence of a papain-based gel (Papacárie) for chemo-mechanical caries removal on bond strength to dentin. Human molars were assigned to the following groups: Group 1: sound teeth were flattened to expose dentin; Group 2: after flattening of surfaces, the papain-based gel was applied on the sound dentin; Group 3: overlying enamel from carious teeth was removed and m...

Simultaneous construction of adjacent projects may lead to emergencies in a foundation pit group, which significantly affects the deformation and safety pits. In this study, characteristics deep group mutual interactions among pits were observed by monitoring system during excavation. Field data including lateral deflections enclosure pile, ground subsidence, as well vertical column movements, ...