A Report on Industrial Visit at

Transcription

1 Department of Civil Engineering A Report on Industrial Visit at Sardar Sarovar Dam Site & Dhanki Pumping Station (Dt & ) Prepared by: Jignesh Shah

2 Details of Visit: Date: 13/10/2015 &14/10/2015 Place: Sardar Sarovar Dam, Kevadiya Colony and Dhanki Pumping Station. Faculty Coordinators:Asst. Prof. Jignesh Shah, Asst. Prof. Kinjal Rank, Asst. Prof. Maulik Panseriya,Lab Assistant Manedra Vyas and kalpana Shukla, Total Staff 5nos Students:Total Student 98nos, Students of 7 th Sem & 5 th Sem Civil Engineering. Total Strength: 103nos (Student 98nos & Staff 5nos) Sardar Sarovar Project Profile: The Sardar Sarovar Project is one of the largest water resources projects of India covering four major states - Maharashtra, Madhya Pradesh, Gujarat and Rajasthan. Dam's spillway discharging capacity (30.7 lakhs cusecs) would be third highest in the world. With 1133 cumecs (40000 cusecs) capacity at the head regulator, and 532 km. length, the Narmada Main Canal would be the largest irrigation canal in the world. The dam will be the third highest concrete dam (163 meters) in India, the first two being Bhakra (226 metres) in Himachal Pradesh and Lakhwar (192 meters) in Uttar Pradesh. In terms of the volume of concrete involved for gravity dams, this dam will be ranking as the second largest in the world with an aggregate volume of 6.82 million cu.m. The first is Grand Coule Dam in USA with a total volume of 8.0 million cu.m. This dam with its spillway discharging capacity of 85,000 cumecs (30 lakh cusec), will be the third in the world, Gazenba (1.13 lac cumecs) in China and Tucurri (1.0 lac cumecs) in Brazil being the first two. The reservoir would occupy an area of 37,000 ha. & would have a linear stretch of 214 kilometres of water and an average widthof1.77kilometres. The Full Reservoir Level (FRL) of the Sardar Sarovar Dam is fixed at RL metres (455 feet). The Maximum Water Level is metres (460 feet.) while minimum draw down level is metres (363 feet.). The normal tail water level is metres (85 feet.). Features of Narmada Project: Dam: 1) Length of main concrete gravity dam: m 2) Maximum height above deepest foundation level: m 3) Top R.L. of dam: m 4) Catchments area of river above dam site: 88,000 Sq. km 5) Live storage capacity M.Ha.m: (4.75 MAF) 6) Length of reservoir: km, Maximum width: km, Average Width: 1.77 km 7) Spillway gates Chute Spillway: 7 Nos. 60' x 60', Service Spillway:23 Nos. 60' x 55' 8) Spillway Capacity: cumecs (30 lakh cusecs) Power Houses: 1 River Bed Power House: 1200MW 2 Canal Head Power House: 250 MW Canal System: Main Canal 1 Full supply level (F.S.L.) at H.R m (300ft) 2 Length upto Gujarat - Rajasthan border km, 3 Base width in head reach m 4 Full supply depth (F.S.D.) in head reach 7.60 m 5 Design discharge capacity (1) In head reach 1133 cumecs(40,000 cusecs) (2) At Gujarat Rajasthan border cumecs(2,600 cusecs) Distribution System: 1 Numbers of Branches 38

3 2 Length of distribution system network km 3 Culturable Command Area lakh hectares Dhanki Pumping Station- Project Profile: This Pumping scheme is the only source of water supply to Saurashtra region. Approximately 132 towns and talukas covering large number of villages shall be benefitted by this scheme. Area of approx five lakh hectares of land will be irrigated thus bringing green revolution in Saurashtra region. Pumping Station No. Chainage in km Name of Village No. of CV Pumps (20Cumecs) No. of VT Pumps (5Cumecs) Lifting Hight PS Dhanki m VTP: Vertical Turbine Pumps, CVP: Concrete Volute Pumps 10nos of Concrete Volute Pumps and 5nos of Vertical Turbine Pumps are mounted. It lifts the water 10.6m from Narmada main canal to Saurashtra region canal. Detailed Schedule of visit: Transportation facility was provided by the college. Students of 7 th & 5 th sem Civil Engineering along with faculty coordinators left for visit at 5:00 AM from Rajkot. We reached at dhanki pumping station at10:30 A.M. the permission for the visit was taken priorly. Executive Engineer Shri Thakkar sir and his technical team guided us during the visit. First we were taken to pump house were 11nos of Concrete Volute Pumps and 5nos of Vertical Turbine Pumps are mounted. It lifts the water 10.6m from Narmada main canal to Saurashtra region canal. After that we visited control station. It is fully automated and computerized. Then after we started journey towards sardar sarovar. We reached kevadia colony at 8:00PM and take night stay at vishram gruh. Next morning we started our visit at 8:00 AM the permission for the visit was taken from main office at Kevadiya Colony. The guides 2nos were provided by the main office. First we were taken to The Sadhu Tekri by our college bus, where The Statue of Unity is going to built. The Statue of Unity is a planned 182 metres (597 ft) monument of Sardar Vallabhbhai Patel that will be created directly facing the Narmada Dam, 3.2 km away on the river island called Sadhu Bet. After that we reached the RBPH (River Bed Power House). The RBPH is an underground power house stationed on the right bank of the river located about 165 meters downstream of the dam. The college bus was not allowed so a mini bus was provided by them to reach the RBPH. RBPH has six number of Francis type reversible turbine generators each of 200 MW installed capacity. The generation of energy depends upon inflow of water from upstream projects and need of water for irrigation in Gujarat. The State Power Sharing is,maharashtra 27%,Gujarat 16%,Madhya Pradesh 57% After that we reached the Sardar Sarovar Dam by our college bus. It is a concrete gravity dam, 1210 meters (3970 feet) in length and with a maximum height of 163 meters above the deepest foundation level, which is under construction across river Narmada. It is a 10.5 earthquake-resistant dam. The dam will be the third highest concrete dam (163 meters) in India, the first two being Bhakra (226 metres) in Himachal Pradesh and Lakhwar (192 meters) in Uttar Pradesh. In terms of the volume of concrete involved for gravity dams, this dam will be ranking as the second largest in the world with an aggregate volume of 6.82 million cu.m. The first is Grand Coule Dam in USA with a total volume of 8.0 million cu.m. This dam with its spillway discharging capacity of 85,000 cumecs (30.00 lac), will be the third in the world, Gazenba (1.13 lac cumecs) in China and Tucurri (1.0 lac cumecs) in Brazil being the first two. After that we walked near about 1.5 kilometres and reached the CHPH (Canal Head Power House). There we met Mr. G. M. Panchal who gave us permission to visit the control room of CHPH. The CHPH is a surface

4 power station in a saddle dam on right bank of the reservoir having total installed capacity of 250 MW. It contains five turbines each of 50 MW installed capacity. Then we reached the Godbole Gate. Godbole Gate essentially is a device to discharge surplus water back to the River and not to the Head Regulator of the canal. It maintains the level of the water. Then we reached the Narmada Main Canal by our college bus. The Canal is 532 km long. It is the biggest lined irrigation canal in the world. The canal extends in the state of Rajasthan to irrigate areas in Barmer and Jhalore districts of Rajasthan. Then we visited Lake No. 1, 2, 3 & 4 by bus. At last we reached to our starting point, the Main Office by bus. We took lunch at a restaurant at 01:00 PM. Then we left for Rajkot at 02:00 PM. We reached Rajkot at 10:30 PM. Abstract of overall knowledge that the students gained from the visit: Students got knowledge about Statue of Unity & its importance. Two power houses of Sardar Sarovar Project where shown; RBPH & CHPH. They were introduced about RBPH & CHPH, technologies used for building them, their constructional features, their working, and their role in power generation. They also got knowledge about control room and internal structure of turbine generators in CHPH. They came to know about the constructional features of the Sardar Sarovar Dam, its importance, its total completed construction work and its working methodology. They got knowledge about the Main Canal & its usefulness to the villages of Gujarat & Rajasthan as well as its benefits & importance for the people of different states. Photo Gallery: Dhanki Pumping Station:

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