Field picture of saddle dam site may be referred to Fig 1.6.-4.Fig. 1. translation - Field picture of saddle dam site may be referred to Fig 1.6.-4.Fig. 1. Lao how to say

Field picture of saddle dam site ma

Field picture of saddle dam site may be referred to Fig 1.6.-4.
Fig. 1.6-4 Dense Vegetations at Saddle Dam Site
1.6.3 Selection of Dam Type and Dam Line
1.6.3.1 Selection of Main Dam type
Xeset River is a tropical hilly river with relatively narrow river channel, the width of the valley bottom is generally 20-80m, and the riverbed is bedrock. Due to the characteristics of natural river channels in Lao PDR being with abruptly rising and falling river water, as well as relatively large suspended load and bed load sediment. According to experiences of similar projects only by arranging flood release/desilting gate in the main riverbed for great discharging can it meet the headrace sediment prevention requirements of the HPP. Therefore, the type of main structure of the headwork complex is flat-bottom flood release/desilting gate. It is to arrange the positive power intake and guide wall on the right bank of the desilting gate and it is to arrange 5 openings of flood-release gate section on the left of the desolting gate. Since the river channel is wide and spacious, if the retaining dam section is to be adopted local material dam, it will not only cause great disturbance on the construction of concrete gate, but also relatively difficult for connection and seepage control of the concrete dam section. Moreover, it will also need a set of special construction machinery for local material dam. This not only cannot save the cost, but also will increase the construction disturbances and difficulties between all the structures. The intake discharge of the HPP is 29m3/s, if low-gate dam is adopted, it will not be able to adequately guarantee water intaking quantity, which in turn will affect the energy production. Since the river channel is wide and smooth if it is to adopt overflow dam the quantities of flood walls on both banks will be large if it is free of relatively suitable flood-release head and width. Moreover, it will cause impacts on the school on the R/B during the flood season. Therefore, all the complex structures will be adopted reinforced concrete gate dam.
1.6.3.2 Selection of Dam Axis of Main Dam
According to the topographic and geologic conditions at the current stages, it is to selec the upper and lower dam lines at the river reach of the recommended dam site, and adopt the same dam type for comparison of the dam line. The upper dam line is located at the great turn of Xeset River, while the lower dam line is located at 100m D/S of the upper dam line.
Through comprehensive comparison both the upper and lower dam lines have the conditions for arranging complex layout, and the lower dam line is relatively short, which is more reasonable in layout. Moreover, the quantity of the scheme for the lower dam line is low the cost is small and the energy indicators are relatively good. Therefore, it is to recommend the scheme for the lower dam line at the current stage.



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ຮູບ​ພາບ​ການ​ພາກ​ສະ​ຫນາມ​ຂອງ​ເຂື່ອນ saddle ອາດ​ຈະ​ຫມາຍ​ເຖິງ​ຮູບ 1.6. 4​.
ຮູບ​. 1.6-4 ພືດ​ດົກ​ຫນາ​ທີ່ Saddle ເຂື່ອນ​ໄຊ
1.6.3 ການ​ຄັດ​ເລືອກ​ຂອງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ປະ​ເພດ​ແລະ Line ເຂື່ອນ
1.6.3.1 ການ​ຄັດ​ເລືອກ​ຂອງ​ປະ​ເພດ​ຕົ້ນ​ຕໍ​ເຂື່ອນ
Xeset ນ​້​ໍ​າ​ເປັນ​ນ​້​ໍ​າ​ພູ​ເຂົາ​ເຂດ​ຮ້ອນ​ທີ່​ມີ​ແມ່ນ​້​ໍ​າ​ທາງ​ແຄບ​ຂ້ອນ​ຂ້າງ​, ຄວາມ​ກວ້າງ​ຂອງ​ທາງ​ລຸ່ມ​ຮ່ອມ​ພູ​ຂອງ​ແມ່ນ​ໂດຍ​ທົ່ວ​ໄປ 20- 80 ແລະ​ນໍ້າ​ເປັນ​ດານ​ຫີນ​. ເນື່ອງ​ຈາກ​ການ​ລັກ​ສະ​ນະ​ຂອງ​ນ​້​ໍ​າ​ຊ່ອງ​ທາງ​ທໍາ​ມະ​ຊາດ​ໃນ​ສ​. ປ​. ປ​. ລາວ​ຈະ​ມີ​ຢ່າງ​ກະ​ທັນ​ຫັນ​ທີ່​ເພີ່ມ​ຂຶ້ນ​ແລະ​ການ​ຫຼຸດ​ລົງ​ນ​້​ໍ​າ​ນ​້​ໍ​າ​, ເຊັ່ນ​ດຽວ​ກັນ​ກັບ​ຂະ​ຫນາດ​ໃຫຍ່​ທີ່​ຂ້ອນ​ຂ້າງ​ໂຈະ​ການ​ໂຫຼດ​ແລະ​ຕຽງ​ຕະ​ກອນ​ການ​ໂຫຼດ​ໄດ້​. ອີງ​ຕາມ​ປະ​ສົບ​ການ​ຂອງ​ໂຄງ​ການ​ທີ່​ຄ້າຍ​ຄື​ກັນ​ເທົ່າ​ນັ້ນ​ໂດຍ​ຈັດ​ນ​້​ໍາ​ຖ້ວມ​ປະ​ຕູ​ຮົ້ວ​ການ​ປ່ອຍ / desilting ໃນ​ສາຍ​ນ​ໍ​້​ຕົ້ນ​ຕໍ​ສໍາ​ລັບ​ການ​ປົດ​ປ່ອຍ​ທີ່​ຍິ່ງ​ໃຫຍ່​ມັນ​ກໍ​ສາ​ມາດ​ຕອບ​ສະ​ຫນອງ​ຄວາມ​ຕ້ອງ​ການ​ຂອງ​ການ​ປ້ອງ​ກັນ​ຂອງ​ຕະ​ກອນ headrace ຂອງ HPP ໄດ້​. ເພາະ​ສະ​ນັ້ນ​, ປະ​ເພດ​ຂອງ​ໂຄງ​ປະ​ກອບ​ການ​ຕົ້ນ​ຕໍ​ຂອງ​ການ​ສະ​ລັບ​ສັບ​ຊ້ອນ Headwork ໄດ້​ເປັນ​ປະ​ຕູ​ນ​້​ໍາ​ຖ້ວມ​ການ​ປ່ອຍ / desilting ພຽງ​ທາງ​ລຸ່ມ​. ມັນ​ແມ່ນ​ການ​ຈັດ​ແຈງ​ການ​ໄດ້​ຮັບ​ພະ​ລັງ​ງານ​ໃນ​ທາງ​ບວກ​ແລະ​ທິດ​ທາງ​ໃນ​ກໍາ​ແພງ​ໃນ​ຝັ່ງ​ຂວາ​ຂອງ​ປະ​ຕູ​ຮົ້ວ desilting ແລະ​ມັນ​ແມ່ນ​ການ​ຈັດ​ແຈງ 5 ເປີດ​ຂອງ​ພາກ​ປະ​ຕູ​ນ​້​ໍ​າ​ປ່ອຍ​, ໃນ​ເບື້ອງ​ຊ້າຍ​ຂອງ​ປະ​ຕູ​ຮົ້ວ desolting ໄດ້​. ນັບ​ຕັ້ງ​ແຕ່​ທາງ​ນ​້​ໍ​າ​ແມ່ນ​ກ​້​ວາງ​ແລະ​ກວ້າງ​ຂວາງ​, ຖ້າ​ຫາກ​ວ່າ​ພາກ​ສ່ວນ​ຮັກ​ສາ​ເຂື່ອນ​ໄຟ​ຟ້າ​ແມ່ນ​ໄດ້​ຮັບ​ການ​ຮັບ​ຮອງ​ເອົາ​ເຂື່ອນ​ໄຟ​ຟ້າ​ອຸ​ປະ​ກອນ​ໃນ​ທ້ອງ​ຖິ່ນ​, ມັນ​ຈະ​ບໍ່​ພຽງ​ແຕ່​ເຮັດ​ໃຫ້​ລົບ​ກວນ​ທີ່​ຍິ່ງ​ໃຫຍ່​ໃນ​ການ​ກໍ່​ສ້າງ​ຂອງ​ປະ​ຕູ​ຮົ້ວ​ສີ​ມັງ​, ແຕ່​ຍັງ​ຂ້ອນ​ຂ້າງ​ມີ​ຄວາມ​ຫຍຸ້ງ​ຍາກ​ສໍາ​ລັບ​ການ​ເຊື່ອມ​ຕໍ່​ແລະ​ການ​ຄວບ​ຄຸມ​ການ​ໄຫລ​ຊຶມ​ຂອງ​ພາກ​ກໍ່​ສ້າງ​ເຂື່ອນ​ຄອນ​ກີດ . ຍິ່ງ​ໄປ​ກວ່າ​ນັ້ນ​, ມັນ​ຍັງ​ຈະ​ຕ້ອງ​ໄດ້​ກໍາ​ນົດ​ໄວ້​ຂອງ​ເຄື່ອງ​ຈັກ​ກໍ່​ສ້າງ​ພິ​ເສດ​ສໍາ​ລັບ​ການ​ສ້າງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ອຸ​ປະ​ກອນ​ໃນ​ທ້ອງ​ຖິ່ນ​ໄດ້​. ນີ້​ບໍ່​ພຽງ​ແຕ່​ບໍ່​ສາ​ມາດ​ຊ່ວຍ​ປະ​ຢັດ​ຄ່າ​ໃຊ້​ຈ່າຍ​, ແຕ່​ຍັງ​ຈະ​ເພີ່ມ​ທະ​ວີ​ການ​ກໍ່​ສ້າງ​ທີ່​ຖືກ​ທໍາ​ລາຍ​ແລະ​ຄວາມ​ຫຍຸ້ງ​ຍາກ​ລະ​ຫວ່າງ​ໂຄງ​ສ້າງ​ທັງ​ຫມົດ​. ການ​ລົງ​ຂາວ​ທີ່​ໄດ້​ຮັບ​ຂອງ HPP ແມ່ນ 29m3 / s​, ຖ້າ​ຫາກ​ວ່າ​ເຂື່ອນ​ໄຟ​ຟ້າ​ຕ​່​ໍ​າ​ປະ​ຕູ​ຮົ້ວ​ໄດ້​ຖືກ​ຮັບ​ຮອງ​ເອົາ​, ມັນ​ຈະ​ບໍ່​ສາ​ມາດ​ຢ່າງ​ພຽງ​ພໍ​ຮັບ​ປະ​ກັນ​ນ​້​ໍ​າ​ປະ​ລິ​ມານ intaking​, ຊຶ່ງ​ຈະ​ສົ່ງ​ຜົນ​ກະ​ທົບ​ການ​ຜະ​ລິດ​ພະ​ລັງ​ງານ​ໄດ້​. ນັບ​ຕັ້ງ​ແຕ່​ທາງ​ນ​້​ໍ​າ​ແມ່ນ​ກ​້​ວາງ​ແລະ​ກ້ຽງ​ຖ້າ​ຫາກ​ວ່າ​ມັນ​ແມ່ນ​ການ​ຮັບ​ເອົາ​ລົ້ນ​ເຂື່ອນ​ປະ​ລິ​ມານ​ຂອງ​ຝາ​ນ​້​ໍ​າ​ໃນ​ທະ​ນາ​ຄານ​ທັງ​ສອງ​ຈະ​ເປັນ​ຂະ​ຫນາດ​ໃຫຍ່​ຖ້າ​ຫາກ​ວ່າ​ມັນ​ເປັນ​ການ​ຟຣີ​ໄດ້​ຫົວ​ນ​້​ໍ​າ​ປ່ອຍ​, ທີ່​ເຫມາະ​ສົມ​ທີ່​ຂ້ອນ​ຂ້າງ​ແລະ width​. ຍິ່ງ​ໄປ​ກວ່າ​ນັ້ນ​, ມັນ​ຈະ​ເຮັດ​ໃຫ້​ເກີດ​ຜົນ​ກະ​ທົບ​ຕໍ່​ໂຮງ​ຮຽນ​ຢູ່​ໃນ R / B ການ​ໃນ​ໄລ​ຍະ​ນ​້​ໍາ​ຖ້ວມ​. ເພາະ​ສະ​ນັ້ນ​, ການ​ທັງ​ຫມົດ​ຂອງ​ໂຄງ​ສ້າງ​ສະ​ລັບ​ສັບ​ຊ້ອນ​ຈະ​ໄດ້​ຮັບ​ການ​ຮັບ​ຮອງ​ເອົາ​ເສີມ​ສ້າງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ປະ​ຕູ​ຮົ້ວ​ສີ​ມັງ​.
1.6.3.2 ການ​ຄັດ​ເລືອກ​ຂອງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ແກນ​ຂອງ​ຫຼັກ​ເຂື່ອນ
ຕາມ​ເງື່ອນ​ໄຂ​ພູ​ມີ​ປະ​ເທດ​ແລະ​ແຮ່​ໃນ​ໄລ​ຍະ​ປັດ​ຈຸ​ບັນ​ໄດ້​, ມັນ​ແມ່ນ​ການ​ເລືອກ​ສີ​ຂອງ​ສາຍ​ເຂື່ອນ​ໄຟ​ຟ້າ​ຂ້າງ​ເທິງ​ແລະ​ລຸ່ມ​ທີ່​ສາ​ມາດ​ເຂົ້າ​ເຖິງ​ນ​້​ໍ​າ ຂອງ​ເຂື່ອນ​ທີ່​ແນະ​ນໍາ​, ແລະ​ຮັບ​ຮອງ​ເອົາ​ປະ​ເພດ​ຂອງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ດຽວ​ກັນ​ສໍາ​ລັບ​ການ​ສົມ​ທຽບ​ຂອງ​ເຂື່ອນ​. ເສັ້ນ​ເຂື່ອນ​ເທິງ​ແມ່ນ​ຕັ້ງ​ຢູ່​ໃນ​ແລະ​ເຮັດ​ໃຫ້​ການ​ທີ່​ຍິ່ງ​ໃຫຍ່​ຂອງ Xeset ນ​້​ໍ​າ​, ໃນ​ຂະ​ນະ​ທີ່​ເສັ້ນ​ເຂື່ອນ​ໄຟ​ຟ້າ​ຕ​່​ໍ​າ​ແມ່ນ​ຕັ້ງ​ຢູ່​ໃນ 100m D / S ຂອງ​ເຂື່ອນ​ເທິງ​.
ຜ່ານ​ການ​ປຽບ​ທຽບ​ສົມ​ບູນ​ທັງ​ສາຍ​ສ້າງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ຂ້າງ​ເທິງ​ແລະ​ຕ​່​ໍ​າ​ມີ​ເງື່ອນ​ໄຂ​ສໍາ​ລັບ​ການ​ຈັດ​ຮູບ​ແບບ​ສະ​ລັບ​ສັບ​ຊ້ອນ​ໄດ້​, ແລະ​ເຂື່ອນ​ໄຟ​ຟ້າ​ຕ​່​ໍ​າ​ເປັນ​ໄລ​ຍະ​ສັ້ນ​ຂ້ອນ​ຂ້າງ​, ຊຶ່ງ​ຈະ​ຫຼາຍ​ທີ່​ເຫມາະ​ສົມ​ໃນ​ຮູບ​ແບບ​. ຍິ່ງ​ໄປ​ກວ່າ​ນັ້ນ​, ປະ​ລິ​ມານ​ຂອງ​ໂຄງ​ການ​ສໍາ​ລັບ​ການ​ອອນ​ໄລ​ນ​໌​ສ້າງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ຕ​່​ໍ​າ​ຕ​່​ໍ​ແມ່ນ​ຄ່າ​ໃຊ້​ຈ່າຍ​ແມ່ນ​ຂະ​ຫນາດ​ນ້ອຍ​ແລະ​ຕົວ​ຊີ້​ວັດ​ພະ​ລັງ​ງານ​ທີ່​ດີ​ທີ່​ຂ້ອນ​ຂ້າງ​. ເພາະ​ສະ​ນັ້ນ​, ມັນ​ແມ່ນ​ແນະ​ນໍາ​ໃຫ້​ໂຄງ​ການ​ສໍາ​ລັບ​ການ​ອອນ​ໄລ​ນ​໌​ສ້າງ​ເຂື່ອນ​ໄຟ​ຟ້າ​ຕ​່​ໍ​າ​ຢູ່​ໃນ​ຂັ້ນ​ຕອນ​ຂອງ​ການ​ໃນ​ປະ​ຈຸ​ບັນ​.



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