April 06 - Thursday
Visit to Serra do Cafezal tunnels
Construction of 4 road tunnels in NATM soil / rock in the mountain section
in the duplication of BR116 São Paulo - Curitiba.
100 km to the work for visit and presentation of this construction in the
national context, its importance in engineering and environmental
contribution.
Estimated total visit time in 7 to 8 hours
April 07 - Friday
Visit to Baltar Mine of Votorantim Cimentos
The Baltar Mine, underground mining of limestone for cement production,
started its operations in 1981, being suspended in 2001 and restarted again
in 2008. The mining method is sub-level stoping, by means of 2 mining panels
separated by a 40-m thick crown pillar, with opening of rooms alternated
with pillars, with the rooms having 3 mining sublevels measuring 40-m wide
and 110-m high and variable length according to the thickness of the mineral
body; For each room, approximately 2.300 m of tunnels are developed with
main dimensions of 3,80 x 3,80 m. The ore is mined by slot opening, fan
drilling and blasting with explosives. The main access is made by a 1850-m
long descending tunnel measuring 7,50 x 5,0 m, 12,4% slope and 210 m depth
in relation to the surface.
Visit schedule:
9 am - 10 am
Welcome reception/Integration/PPE handout
10 am - 11 am
Going in/out of the mine with 3 vehicles - 12 persons
11 am - 12 pm
Going in/out of the mine with 3 vehicles - 12 persons
12 pm - 1 pm
Lunch - Main canteen
PT
EN
