Search for dissertations about: "underground constructions"

Showing result 1 - 5 of 15 swedish dissertations containing the words underground constructions.

2. 1. Water leakage into underground construction in fractured rocks

   Author : Daniele Cesano; KTH; []
   Keywords : hard rock; fracture; heterogeneity; underground constructions; leakage; prediction;

   Abstract : .... READ MORE

4. 2. Behaviour and stability of shallow underground constructions

   Author : Jimmy Töyrä; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

   Abstract : The growing needs of urbanization, like more transport possibilities, sewers, maintenance tunnels, the need of constructing shallow tunnels increase. By a better understanding of the mechanical properties and state of stress in the shallow parts of the bedrock it may be possible to determine which factors that are of importance at a specific construction site, and thereby increase the cost efficiency of pre-investigations and the tunnel construction. READ MORE

5. 3. Cement-Poor Concrete and Grout for Use in Underground Constructions

   Author : Mohammed Hatem; Leena Korkiala-Tanttu; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

   Abstract : This thesis deals with the composition and properties of cement-based materials, concrete and grout, for use as seals and for stabilizing fracture zones in underground facilities like mines and repositories for chemical and radioactive waste. It is of general character with respect to the composition and preparation of concretes and grouts but focuses on the sealing of boreholes for mineral prospection and site investigation for locating underground repositories of hazardous waste. READ MORE

6. 4. Managing hydrogeological risks in underground construction

   Author : Johanna Merisalu; Chalmers tekniska högskola; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; risk management; groundwater drawdown-induced damages; cost–benefit analysis; uncertainties; decision support;

   Abstract : Groundwater leakage into underground constructions can cause groundwater drawdown and subsequently costly damages to objects impacted by changes in groundwater conditions. In order to reduce the damage risk, risk-reducing measures can be implemented. READ MORE

7. 5. Groundwater chemistry affected by underground construction activities

   Author : Fredrik Mossmark; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : A leaking underground construction increases the groundwater recharge and decreases the residence time of the groundwater. If groundwater of a certain chemical composition dominated the location inside the bedrock of a planned tunnel prior to the construction phase, this water is likely to be replaced by water of a different chemical type because of leakage of water into the tunnel during the construction and operational phases. READ MORE