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Post by Maharajadhiraja Jalamdhara on Nov 4, 2006 1:47:02 GMT 7
Dam Constructions.
Several dams are going to be built in the upcoming days (consider it as years for micronational sense).
Anyone interested in participating with some of works? No need for elaborate calculations and such. Perhaps, a post in how a certain element of the work was done would be good. I'll post and provide you all with basic idea/planning of the dam(s) construction. You can then post in your way of how it was built/planned/performed.
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Post by Maharajadhiraja Jalamdhara on Nov 4, 2006 1:47:46 GMT 7
Oh. And I also need names for the dams. Give a list of potential names for the dams. We'll then choose which ones are best.
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Post by Jeremy on Nov 4, 2006 3:45:13 GMT 7
I'm not sure about the names, but i would like to take part in the project.
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Post by Maharajadhiraja Jalamdhara on Nov 4, 2006 4:03:52 GMT 7
Excellent. Dam 1. The big circle is going to be the actual dam. Its going to be somewhat similar to the hover dam. The blue line, are a couple of tunnels (four or five) that are to be made to channel most of the water from the river at the North (top) point to the South (bottom point). This will be aided by the first cofferdam site (the North log), which should help in moving most of the water to the four /five blue tunnels. Next, any water that continues down the original river bed, would be met with another cofferdam. This one will ensure that no water (or almost very little water) will pass through and continue down the original river bed. All water will be directed via the red spillways. Once the water stops passing through the dam site, the dam will be constructed. Also under construction will be the "Sediment Recollection Sites", marked by the loose stone like drawings. There will be around three sites (you could have less if required). Their primary job would be to collect the top soil once a while. Also, at the same time, some more tunnels/channels will be constructed at a height, marked by the violet line. This height will be just below the maximum water height the dam will maintain. This will be to take excess water from the lake/river and run it down the river. This will be used when there is a huge risk to the dam due to flooding of the upper river valley or something. Though chances are its not gonna be used a lot. But prevention is better nonetheless. There will be another few dams along that same river. |
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Post by Maharajadhiraja Jalamdhara on Nov 4, 2006 4:18:18 GMT 7
A couple of links for consideration: Karun3 Dam (Iran)Karkhen Dam (Iran)Aswan Dam - there's a brief construction description. Hoover Dam - again, some construction description. Seeing at the amount of description available, i think we'll first complete this giant project, before moving on to the next. |
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Post by Maharajadhiraja Jalamdhara on Nov 7, 2006 11:30:17 GMT 7
Pancheshwar Dam Construction
Stage I - River Diversion
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To diver the river's flow around the dam construction site, several division tunnels were constructed through the mountains on the North side of the river. There were a total of five diversionary tunnels constructed. The construction of the tunnels was speeded by working on it at three spots: near the start of the tunnels, half way and near the exit. Construction of all the five tunnels were done at the same time so as to finish a certain aspect of the construction for all the tunnels as soon as possible and at the same time.
The construction site near the start of the tunnels entry was responsible for constructing of a complex, Tunnel Entrances Complex (TEC), from which the gates to the tunnels can be opened and closed. After the changes to the original plans, the complex was moved to a higher elevation, while still maintaining controls over the entrance gates on the five diversionary tunnels. The change was done so that once the dam was constructed, the complex would not become submerged underwater. The tunnels were then built on the path that was indicated previously. The construction site near the tunnels exit was primarily responsible for the construction of the five diversionary tunnels uptill the midway point, where it would have been connected to the other half of the tunnel system. The third site, had its role tripled after the major changes that were introduced. The first role of the site was to construct the tunnels and work towards the start of the tunnels. The second role was to construct the two overflow tunnels and work for a few hundred meters. The third role was to construction the Tunnel Power Complex (TPC).
The tunnels were 60 feet in diameter. Their combined length was nearly 23,000 feet. Tunneling began at the lower portals of the sites and within a year, work began on lining the tunnels with concrete. First the base or invent was poured. Gantry cranes, running on rails through the entire tunnel were used to place the concrete. The sidewalls were poured next. Moveable sections of steel form were used for the sidewalls. Finally, using pneumatic guns, the overheads were filled in. The concrete lining is 3 feet thick, reducing the finished tunnel diameter to 54 feet.
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Post by Jeremy on Nov 8, 2006 3:58:36 GMT 7
Sounds as if we're off to a good start  |
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Post by Maharajadhiraja Jalamdhara on Nov 9, 2006 9:54:53 GMT 7
Stage I - River Diversion
====================
The TPC had been constructed for the purpose of generating and providing hydro-power to the region, while the dam was to be constructed. It was realised that the massive flow of the river through the diversion tunnels could be utilized to produce usefull energy. Though this was only a temporary solution, as it could only be used till the tunnels were in operation, a decision was reached that its construction would be highly benefitial and it would more than make up for its temporary usage. The turbines and all the electrical equipments, down to last computer systems, were installed and the complex was linked up to the electrical grid of Pancheshwar.
Construction on the main diversionary tunnels was nearing finish, when half the crew was diverted towards the construction of the Overflow tunnels. The aim of such a move was to get the entire tunnel system finished before the gates to the diversionary tunnels were opened and water allowed in.
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Post by Maharajadhiraja Jalamdhara on Nov 10, 2006 12:15:47 GMT 7
Stage I - River Diversion
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Nets and grates have been installed in front of the diversionary tunnel entrance. Similar devices are going to be installed in front of the overflow tunnels once their construction is finished. Within the diversionary tunnels itself, the construction has finished. Coating and few other minor jobs throughout the tunnels remain, while the TPC itself was being furnished with all its new furnitures and markings. A test-run, without water from the river, was conducted to ensure that all systems were working properly. The date for the opening of the diversionary tunnel gates was nearing soon. This was apparent as several construction vehicles, including dump trucks, were gathering nearby. The dump trucks, in particular, had their cargoes full with dirt that was removed during the construction of the tunnels. The next stage in the construction of Pancheshwar dam was right around the corner.
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Post by Maharajadhiraja Jalamdhara on Nov 12, 2006 9:17:56 GMT 7
Stage I - River Diversion
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The diversionary tunnel gates were opened and the water from the river starting flowing through the tunnels. Though the river was still flowing through the original river path, the amount was decreasing as construction of the first cofferdam was begun. Trucks filled with dirt and stones from the mountains were driving upto the river and dumping their cargo into the river. Some of the dirt was being washed off down the river, but the bulk was settling down thanks to some of the large stones that were being placed every now and then. Few hundred meters down the river, a second diversionary channel was being constructed. Its main purpose would be to reroute all water that passed the first cofferdam site via itself, so that the dam construction site base would remain water-free.
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Post by Maharajadhiraja Jalamdhara on Nov 18, 2006 9:20:27 GMT 7
Stage II - Groundworks
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With the two coffer dams constructed and the entire water system flowing through the diversionary tunnels and the small spillway, the site where the main dam site was to be constructed had been drained clean of water. The construction site was soon dewatered and excavation for the dam foundation had begun. Inorder for the dam to rest on solid rock, it was necessary to remove all loose materials until solid rock was reached.
Loose rocks were removed from canyon walls so as to provide the dam with strong base on the sides. This involved men, with special construction equipment and safety measures, to climb down the canyon walls and drill holes, using jackhammers. The holes were then filled with dynamites and blown away to remove any loose rocks.
With the loose rock out of the way, work had begun on the construction of the dam, with the foundation being currently worked upon.
Upriver, more foundations were being prepared. These would later become the sites for Sediment Recollection Complex (es).
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