著者

林 誠二 村上 正吾 徐 開欽 渡辺 正孝

出版者

Japan Society of Civil Engineers

雑誌

地球環境シンポジウム講演論文集 (ISSN:18848419)

巻号頁・発行日

vol.12, pp.79-86, 2004-08-02 (Released:2011-06-27)

参考文献数

9

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To evaluate the protection effect of the Three Gorges Dam Project (TGP) on the flood in the middle region of the Changjiang River basin, we applied the integrated watershed hydrological model using gauged daily precipitation data of 1998 when the second largest flood occurred in the basin in the last century. From the results simulated by applying the discharge volume controlled by each upper limitation value from 40, 000 m3/s to 60, 000 m3/s, we could not find the clear effect on the reduction of the water level during flood period not only in the Dongting Lake but also in the Changjiang mainstream in the cases that the upper limitation discharge value were over 50, 000 m3/s. In the case that the upper limitation value was 40, 000m3/s, although the flood protection effect was clearly exerted in both the mainstream and the lake, the simulated storage volume of TGP remarkably exceeded the total flood control volume (221.5×108 m3) at the peak of inflow to TGP. These results suggested that TGP flood control ability does not efficiently work for the decrease of flood damage in the middle region of the Changjiang basin in case of the occurrence of 1998 type flood phenomena.

著者

林 誠二 村上 正吾 徐 開欽

出版者

Japan Society of Civil Engineers

雑誌

地球環境シンポジウム講演論文集 (ISSN:18848419)

巻号頁・発行日

vol.15, pp.135-141, 2007-08-02 (Released:2011-06-27)

参考文献数

16

被引用文献数

1

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To evaluate the flood protection effect of the conversion of polders to retarding basin around the Dongting Lake in the middle region of the Changjiang River, China, we applied the integrated watershed hydrological model using gauged daily precipitation data of 1998 when the second largest flood occurred in the basin in the last century. While the estimated storage capacity of the Dongting Lake increased 11.5×109 m3 by the conversion of polders in comparison with the estimated capacity at the flood period in 1998 at the average water level of 35.0 m, the simulated daily average water levels of the lake showed that the protection of the flood was impossible by only increasing capacity in the confluence between the Changjiang mainstream and the Dongting Lake in case of 1998 flood. The model also simulated that the flood protection was fully achieved at the confluence by making the volume diverging from the Changjiang mainstream to the Dongting lake increase with the diverging ratio at 1950s under the appropriate discharge control by the Three Gorges Dam. These results suggest that “return land to lake” policy around the Dongting Lake probably brings the best flood protection effect when the increased capacity of the lake uses for the control of the water level in the Jinjiang section of the Changjiang mainstream.

著者

和手 俊明 横井 睦己 村上 正吾 庄司 研 諸星 周子

出版者

公益社団法人 空気調和・衛生工学会

雑誌

空気調和・衛生工学会大会 学術講演論文集 平成21年 (ISSN:18803806)

巻号頁・発行日

pp.1987-1990, 2009-08-18 (Released:2017-08-31)

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In this report, use and the effect of the BIM construction data in M/E design calculation that we have been actually applying for several years are described. Concretely, it reports on the following items, outline of composition of BIM use system, automation in thermal load calculation, automation in PAL calculation, automation in natural ventilation calculation, use in rough estimate of equipment, and other use.