G.L. Tiley & Associates Ltd. will handle all elements of structural design in the hoist system.

Headframe Layout and Design

•Hoisting plant general arrangements are produced for feasibility and final designs

•Headframes are modeled with a finite element analysis program and designed for working and rope breaking loads

•Hydraulic dumps or scroll plate supports are designed

•Rope changing procedures and handling equipment are provided

Finite Element Analysis of Headframes, Bins, and Structures

•Headframes are modeled with a finite element analysis program and designed for working and rope breaking loads

•Bins are sized for production rates and storage capacities

•Foundations, air plenums, piles and/or spread footings are integrated into the top of shaft design

Shaft Design

•Rectangular timbered, concrete lined and unlined circular shafts are designed

•Shaft liners are designed to withstand hydrostatic pressures if required

•Shafts can be designed for sinking through frozen ground

•Compartments are sized for skips, cages and services, integrating the entire hoisting plant for production and service requirements

Rope and Fixed Conveyance Guiding System Design

•Rope guides are designed with either cheese weights or spring tensioned glands

•Wood, steel and composite guides are designed using Slam Force Analysis calculations based on guide support misalignment and conveyance effective mass

•Guides are designed with low stiffness supports to absorb shocks from conveyance slamming loads

Loading Pockets Design

•Loading pockets are designed with pan, chain or vibrating feeders to regulate the ore flow

•Measuring bins are designed for volumetric or weight measurement

•Transfer cars or pantleg chutes are designed for multiple skip loading

Hydraulic Dumps, Bins, Chutes, and Conveyors Design

•Hydraulic dumps are designed to reduce hoisting cycle times

•Bins are sized for production rates and storage capacities

•Conveyors are designed to match mill input rates

Upgrading Existing Hoisting Plants for Higher Capacities

•Hoisting plants are evaluated for ultimate capacities

•Hoisting plants are inspected for deficiencies and repaired

•Member reinforcement or additions are designed to reduce high stressed members

•Headframes are re-rated for increased production rates and loadings

Shaft Sinking

•Galloway Designs

•Buckets & Crosshead Gear Designs

Underground Salt Mine Shaft Maintenance Platform

A 35'0" tall aluminum work stage, consisting of four decks, was designed for guide changing, scaling, and concrete lining of a salt mine.

The decks are hinge connected to the frame and can be manually raised during ascent or descent while performing shaft maintenance.

The mid decks can be removed during guide changing operations. The bottom deck is designed to accomodate heavy equipment.

There are two monorails on either side of the work stage for guide changing operation.