presentation of industrial training
TRANSCRIPT
CONSTRUCTION OF HYDROELECTRICITY PROJECT AT
CHANJU DISTT. CHAMBA
( HIMACHAL PRADESH)
HISTORY AND NECESSITY
HISTORY:-
I A ENERGY is a sister concern branch of GOEL Group of Companies. I A Energy means INDO ARYA ENERGY. It was built in 2002 in Shimla (H.P.). I A ENERGY CHANJU – I HEP 36 MW was the first project allotted to this company in the year 2005. It was allotted by former C.M. of Himachal Pradesh (Raja Virbhadar Singh).
NECESSITY:-
I. From the growth of peak demand and anticipated installed generation capacity , it is observed that power supply position in the Northern region would become all the more acute .
II. The most important source of power development in the Northern region is its abundant hydro resources located in Himachal Pradesh, Uttar Pradesh, Uttranchal and Jammu & Kashmir. Chamba Hydro-electric Project is considered very attractive from point of view of deriving benefits during 11 th Five Year Plan
PROPOSALS
I. Construction of one barrage site havingHEIGHT : 16.00 mWIDTH : 3.00 mHEAD : 234.00 m
II. Construction of ADIT-I, ADIT-II, ADIT-III, AVC, ADIT-IV .
III. Construction of Power House , H.R.T.
ADIT-I :-
LENGTH : 60.58m
WIDTH : 4.00m
HEIGHT : 4.20m
START EL. : 1430.042m
END EL. : 1427.80m
EASTING : 19407.493
NORTHING : 20594.025
ADIT-II :-LENGTH : 341.739m
WIDTH : 4.00m
HEIGHT : 4.20m
START EL. : 1447.31m
END EL. : 1418.96m
EASTING : 19404.493
NORTHING : 20596.025
ADIT III :-LENGTH : 530.108m
WIDTH : 4.00m
HEIGHT : 4.20m
START EL. : 1451.31m
END EL. : 1406.96m
EASTING : 18627.493
NORTHING : 21351.025
ADIT- IV :-LENGTH : 299m
WIDTH : 4.00m
HEIGHT : 4.20m
START EL. : 1217.31m
END EL. : 1195.96m
EASTING : 19404.493
NORTHING : 20596.025
“RIBS” :-It is a steel structure provided at the start oftunnel.These are generally provided toprevent loose rock material from fallingdirectly on the working point. It is of D-shaped and is made up of I-section beam.
Tie rods are generally used to connect Ribs.Concrete mix M-20 is used for backfilling ofRibs.
CONSTRUCTION OF TUNNELS IN STEPS• I. PROFILING
• II. DRILLING
• III. LOADING( EXPLOSIVES)
• IV. BLASTING
• V. DEFUMING
• VI. MUKING
• VII. POOLING
DRILLING IN PROGRESS
SHOTCRETE1. It is concrete conveyed through a hose and pneumatically projected at high velocity onto a surface, as a construction technique. Shotcrete is usually an all-inclusive term that can be used for both wet-mix and dry-mix versions.
2. Shotcrete undergoes placement and compaction at the same time due to the force with which it is projected from the nozzle. It can be impacted onto any type or shape of surface, including vertical or overhead areas.
WETCRETE• It is concrete conveyed through a hose and pneumatically projected at high velocity onto
a surface, as a construction technique.
• In Wetcrete, water is added at the time of preparing mix.
WETCRETE IN PROGRESS
ROCK BOLTING
1. A rock bolt is a long anchor bolt, for stabilizing rock excavations, which may be used in tunnels or rock cuts. It transfers load from the unstable exterior, to the confined (and much stronger) interior of the rock mass.
2. Cement Capsule and Resin Capsule are used during rock bolting.
Roc-203 doing rockbolting Rock Bolts shown in fig.
RETAINING WALL / BREAST WALLBreast wall is constructed to protect sloping ground from the cutting actions ofweathering agents.The following salient points are note worthy :-
I. Because of increase of earth pressure with the depth of fill the section of breastwall increase from top to bottom.Generally the back of wall is stepped while the faceis kept vertical or inclined
II. Breast wall are some time provided with batter on both side .
III. Sufficient numbers of weep holes are provided all along the length as well asheight of the wall to drain off gravitational water of earth fill general rule is to provideatleast one weep hole for 3 sq m. of the surface .
IV. As a thumb rule the thickness of wall at any depth h below the fill level may bekept between 0.33 h to 0.4 h depending upon the condition of filled material
RETAINING WALL / BREAST WALL
WEEPHOLES
Sufficient numbers of weep holes are provided all along the length as well as height of the wall to drain off gravitational water of earth fill.
General rule is to provide atleast one weep hole for 3 sqm. of the surface
WEEPHOLES
TOTAL STATION
A Total Station is an electronic/optical instrument used inmodern surveying. The total station is an electronictheodolite (transit) integrated with an electronic distancemeter (EDM) to read slope distances from the instrumentto a particular point.
APPLICATION OF TOTAL STATIONI. Coordinates of unknown point relative to a known coordinates can be determined.
II. Angles and distances are measured
using total station.
iii. These are primary surveying device
used in mining survey.