Liashok 1 , I. Iordanov 1 , D. Chepiga 1 , S. Podkopaiev 1. Full text PDF. Investigation of the seam openings competence in different methods of protection in complex mining and geological conditions of pitch and steep coal seams development of Donbas.
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Widoczny [Schowaj] Abstrakt. Projektowanie i budowa tuneli. Astaldi SpA via G. Modern approach to tunnel design. The dynamic development of tunnelling construction that has been observed in recent years results in the necessity to carry out a deeper analysis of previously used methods of designing tunnel facilities.
The problem concerns both determining the magnitude of loads acting on the tunnel casing at the stage of its dimensioning and the technology of their drilling. Current studies suggest the possibility of using new design methods taking into account, to a much greater extent, the cooperation of the rock mass with the tunnel lining. The paper presents the main assumptions of the ADECO-RS method and the way of determining the load acting on the preliminary and final liningbased on the rock mass reaction curve.
This method relies to a large extent on the measurements and observations of the behaviour of the face of the tunnel's ancestor and its contour.
The paper also presents the results of geodetic measurements carried out in the tunnel, which form the basis for making decisions regarding the construction of individual stages of the tunnel casing. Based on the site visits, the work describes the next stages of ongoing works as well and discusses the issues related to the methods used to identify the rock mass used in the tunnel.
Analysis of the technical condition of the sewage collector with the use of numerical simulation