nlwxpearo
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 Posted: Sun 21:10, 23 Jan 2011 Post subject: Rail transport in high-head power plant Constructi |
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Rail transport in high-head power plant Construction
Transportation costs are too high. Rail transportation is recommended to transport materials with low transport costs, high supply security features: keyword power rail transport construction materials operation 1 outlines the mountains of northern Guangdong. Abundant water resources. Area of high mountains, dense forests, river gradient large. The current construction of small hydropower stations with a considerable part of a high head diversion type hydropower station. Layout features such as power plant project: general construction of appropriate locations in the river upstream of dam, through a long water diversion system will be transported from the river downstream of the pressure at the higher lU before the first pool. Then flow through the penstock to the introduction of plants to generate electricity. Typically,[link widoczny dla zalogowanych], power plant and dam construction site of a road to reach. Material transport to facilitate: the location of living in high mountain water diversion system, as long lines, often white water diversion tunnel. Dispersion caused by the construction site, in most cases no ready-made construction of the road. Therefore, transportation of materials difficult: the author based on many years of practice, successful use of rail transport solution to this problem 2, the installation of rail transport rail station in the mountain slope suitable for less than 45. Terrain conditions. Adaptability, the vertical transport distance is not limited. Basic principle is: the construction site to install a 75kW near the winch, hoist around the pulley by pulling on the rope back and forth on the rail transport car moving, so as to achieve the purpose of transportation of materials. Car transport transportation need only hoist up traction, driving down the decline in its gravity can be borrowed. The installation process is: (1) clean-up site: First, select a road next to the storage yard, near the construction site discharge select a field,[link widoczny dla zalogowanych], set a good transportation to orbit. Track changes to the same slope,[link widoczny dla zalogowanych], or slope slightly,[link widoczny dla zalogowanych], preferably along the ridge line layout. Then along the proposed lines to clear a 05m wide roadbed, track used for the auxiliary set. (2) optional rail mounting = 8 light rail tracks; ties to local materials. Manufacture hardwood with mountains: the laying of tracks with special spikes fixed to the sleepers on the rail: two parallel rails of the net spacing 05m; sleepers placed on the vertical rails, sleepers net distance of 1.0m. Installation requires strong ties to ensure the two parallel rails and at the same plane. (3) installation of power and traction transport equipment. Installed at the discharge site near the winches 7.5kw,[link widoczny dla zalogowanych], while the top end position in the track to install a fixed pulley. No. I4 rope and then bypass the transport car with the winch pulley connected to the car can start pulling hoist transport vehicle in orbit for the tipping bucket car can be customized to facilitate the discharge, bucket capacity is 04. Front and rear wheelbase is 1.0m, too long or too short are easily lead to derailment accident: the first test after several haul. Rope is not required in contact with the sleepers, confirmed safe after the whole track can be officially put into use. 3, the practical application of engineering Yellowstone Shixing County, Shaoguan City, pits three hydropower station is able to benefit as owners of the stock Hydro power station installed capacity 2x1600kW, design net head for the 135Onl, designed annual power generation capacity of 120o million kwh: water diversion system total length of 60km. Long diversion tunnel in which no pressure 4.5km, total 1i a tunnel. Is basically a hole connected to the distribution along the 5 major construction site. The existing left bank of the river by road construction, most of the section of the elevation of 1680m or so; the right bank of the river diversion system layout, where the elevation of 300.0m. Owners of a field investigation and evaluation. A total of three transport track laying, rent a floating rope. A long 2O0m newly built road construction, water diversion system is basically solved the problem of material transport. Rail transport of materials including water system construction materials accounted for 80% of the total: Yellowstone crater three total length of rail station 700m, a total investment of 5 million. If the new construction of three road repair, the total length of 1m, the total investment of 9 million. Therefore, the mode of transport by rail investment costs are significantly lower than the newly built road construction; unit transportation cost is 2 yuan / t lower than road transport. 4 Conclusion In high-head power stations construction, construction materials, use of rail transport compared with other transport modes, has the following advantages: set speed. General long-2O0 �� track to be completed within 10d; investment costs low. Wide sources of material. Rail and other recyclable materials; covers an area of steps, basically does not cause soil erosion and help protect the environment: transport, low cost, material transport are protected. From the impact of the rainy season can be day and night transport materials. In summary, the high-head small hydropower construction, with the way rail transportation to transport construction materials, has some promotional value. = About the�� TRANSACTIONS. M, 2B years. Assistant Engineer f Received :2000-12-1g
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