Underground large scale test facility for rocks

Stability analysis and selection of optimuim support system of large scale underground space-Case study

The Azad pumped storage power plant including the pumping and transformer cavern and surge tanks has been located in the Sanandaj-Sirjan formation with the alternation of slate and phyllite and meta sandstone.Due to the sensitivity and special use of these spaces, stability analysis and ensuring the safety of carven is very important.Nowadays, using the surface storage tanks is very costly; The...

Scale test facility for measuring vortex induced vibrations

An effective heuristic for large-scale capacitated facility location problems

The Capacitated Facility Location Problem (CFLP) consists of locating a set of facilities with capacity constraints to satisfy the demands of a set of clients at the minimum cost. In this paper we propose a simple and effective heuristic for largescale instances of CFLP. The heuristic is based on a Lagrangean relaxation which is used to select a subset of “promising” variables forming the core ...

Redesigning Benders Decomposition for Large-Scale Facility Location

The Uncapacitated Facility Location (UFL) problem is one of the most famous and most studied problems in the Operations Research literature. Given a set of potential facility locations, and a set of customers, the goal is to find a subset of facility locations to open, and to allocate each customer to open facilities, so that the facility opening plus customer allocation costs are minimized. In...

A heuristic method for large-scale multi-facility location problems

A heuristic method for solving large-scale multi–facility location problems is presented. The method is analogous to Cooper’s method [3], using the authors’ single facility location method [20] as a parallel subroutine, and reassigning customers to facilities using the heuristic of Nearest Center Reclassification. Numerical results are reported.