109

13,000 千元

2020/08/01

2021/07/31

林季螢

臺東縣環境保護局

潘金城

富聯工程顧問股份有限公司

大氣空氣

卑南溪、河川揚塵、水覆蓋工法

Beinan Creek, River Dust, Water cover method

林漢城

蔡忠憲

02-3765201#

shain0411@geci.com.tw

臺東市長年飽受卑南溪河川揚塵影響，每當冬季或颱風侵襲前，常因強勁之東北季風或颱風侵襲前之外圍環流影響，造成嚴重之「風飛砂」災害，98年揚塵事件日高達32日，PM10最大濃度達2,000（μg/m³），空氣品質甚為惡劣，對於臺東市區居民交通安全與生活品質造成相當大之影響，為此臺東縣環保局100年起提出「卑南溪河川揚塵防制及改善推動計畫」（簡稱本計畫），期透過計畫建立卑南溪風砂揚塵之預警、通報、宣導及水覆蓋實兵演練等機制，使受卑南溪風砂揚塵之民眾，得以在揚塵來臨前提早因應防範。 本計畫彙整歷年各類測站（臺東、關山、利吉、仁愛國小、森林公園及五處維型感測器）資料、河川特性、河川地區土地覆蓋現況（或揚塵好發狀況）等，購買衛星圖資（每月1幅，共12幅），判識卑南溪流域河床組成樣態，110年6月卑南溪河床裸露地約占22%以上，其次為含水灘地約38%，植被地約24％，水體約16%，並進行PM10濃度模擬增量，執行52次裸露地巡查，結合所有資訊，規劃出卑南溪河川揚塵好發區，利吉大橋上游至出海口、寶華大橋上下游及電光大橋上下游區段，在東北風、北風及南風吹襲下（3m/s），容易發生河川揚塵。為此，計畫期間至臺東大橋至出海口區進行實兵演練施作水覆蓋工法，施作累計面積達386.89公頃，水覆蓋面積達1,044公頃，並於東北季風盛行季節，針對易受河川揚塵影響區域執行道路環境清理作業94車次，洗街長度達7,278公里，TSP削減量共達237.40公噸，PM10削減量達87.38公噸。 此外為讓民眾及緊急應變各單位能提前因應，建置河川揚塵預報機制，透過揚塵一把罩APP及10處LED顯示器（電子看板）提供未來24、48小時揚塵預報及空氣品質即時資訊，並辦理3場內部、2場專家學者及2場河川揚塵巡守隊等教育訓練，共113人次參與，藉以提高應變人員專業知識及觀念。每季召開揚塵防制區域聯繫會議，共辦4場次，邀請懸浮微粒物質災害防救應變單位參加，以了解權責分工，整合資源，強化各單位應變機制，暢通討論及溝通管道，並彙整各單位防制揚塵成效，八河局水覆蓋施作109年度809公頃，110年至7月637公頃，並開放河川裸露地受理種植，面積達155公頃，同時結合林務局臺東林區管理處、縣府林務科進行綠覆蓋12公頃、蓆覆蓋4公頃，而在110年1至5月枯水期間，藉由區域聯繫會議，協調行政院農田水利署臺東管理處，提供灌溉用水以日、夜分區方式，白天提供農民使用，夜裡分流至卑南溪濕潤裸露地。 計劃期間辦理10場次河川揚塵防制宣導活動，藉由宣導活動建立社區民眾及學校生師揚塵防制自我保護觀念，推廣中央及地方防制之努力，並透過VR實境短片創意宣導帶來更加多元宣導方式，藉由短片替代前往卑南溪現場，宛如親臨現場瞭解，搭配VR虛擬實境眼鏡，更能加深民眾體驗感，參與總人數達876人，綜合以上場次宣導活動回收問卷數量為859份，整體活動規劃滿意度達93.36％。 經由上述之工作項目執行，109年度且有賴颱風影響程度降低，八河局與環保局持續施作水覆蓋工法，讓河床持續保持濕潤狀態，即便在9至11月12至15時午間時段，風速達到3（m/s）以上，風向北風、東北風之條件下，至今臺東及關山地區仍未有河川揚塵事件日發生，109年度臺東PM10濃度僅達17（μg/m³），110年至6月PM10平均濃度為20（μg/m³），皆為全國最低，至110年7月底，臺東市已連續23個月無揚塵事件日發生，河川揚塵防制成效相當顯著。

卑南溪、河川揚塵、水覆蓋工法

109年度卑南溪計畫期末報告定稿-全版.pdf

45MB

109年度臺東縣卑南溪河川揚塵防制及改善推動計畫-期末報告定稿

2021/8/12 上午 12:00:00

Taitung City has been affected by the dust from the Beinan River for many years. Whenever a winter or before a typhoon hits, it is often affected by the strong northeast monsoon or the peripheral circulation before the typhoon hits, causing serious "wind flying sand" disasters. The dust event in 1998 The maximum concentration of PM10 reaches 2,000 (μg/m³) per day, and the air quality is very poor, which has a considerable impact on the traffic safety and quality of life of residents in Taitung City. Therefore, the Taitung County Environmental Protection Bureau has proposed this in 100 years. The "Peinan Stream Dust Prevention and Improvement Project" (referred to as this project) aims to establish mechanisms such as early warning, notification, publicity, and water coverage exercises for the Beinan River wind-sand dust through the plan, so that the The people who raised the dust from the sands of the Beinan River were able to take precautions before the dust came. This project collects data from various measuring stations (Taitung, Guanshan, Liji, Ren'ai Elementary School, Forest Park and five dimensional sensors) over the years, river characteristics, current land cover status in river areas (or prone dust occurrence), etc. , Purchase satellite image data (1 per month, 12 in total) to identify the composition of the riverbed of the Beinan River Basin. In June 110, the exposed area of ​​the riverbed of the Beinan River accounted for more than 22%, followed by about 38% of the water-bearing beach. , Vegetation area is about 24%, water body is about 16%, and PM10 concentration simulation increase is carried out, 52 exposed area inspections are performed, and all information is combined to plan the area where the dust is prone to the Beinan River and the upstream of Liji Bridge to the sea mouth and Bao The upstream and downstream sections of the Hua Bridge and the upstream and downstream sections of the Dianguang Bridge are prone to river dust under the northeast, north and south winds (3m/s). For this reason, during the plan period, the water covering construction method was carried out to the Taitung Bridge to the estuary area of ​​the sea. The cumulative area of ​​the construction reached 386.89 hectares, and the water covered area reached 1,044 hectares. During the northeast monsoon season, it is aimed at susceptible to the influence of river dust. The area carried out 94 vehicles of road environmental clean-up operations, the length of street washing reached 7,278 kilometers, the total reduction of TSP reached 237.40 metric tons, and the reduction of PM10 reached 87.38 metric tons. In addition, in order to allow the public and emergency response units to respond in advance, a river dust forecasting mechanism has been established, through the dust cover APP and 10 LED displays (electronic signage) to provide the next 24, 48 hours of dust forecast and air quality real-time information, and 3 internal training sessions, 2 sessions of experts and scholars, and 2 sessions of the river dust patrol team were organized, with a total of 113 people participating in order to improve the professional knowledge and concepts of responders. The dust prevention and control area liaison meeting is held every quarter, and a total of 4 sessions are held, inviting suspended particulate matter disaster prevention and rescue response units to participate in order to understand the division of powers and responsibilities, integrate resources, strengthen the response mechanism of each unit, smooth discussion and communication channels, and organize all The effectiveness of the unit’s prevention and control of dust. The Eight Rivers Bureau has implemented 809 hectares of water in 109 years and 637 hectares from 110 to July. The Forestry Department of the county government carried out a green cover of 12 hectares and a mat cover of 4 hectares. During the low water period from January to May, 110, through the regional liaison meeting, the Taitung Management Office of the Agricultural and Water Resources Department of the Executive Yuan was coordinated to provide irrigation water daily and The night zoning method is used by farmers during the day, and diverted to the wet and bare Beinan Creek at night. During the plan period, we will organize 10 publicity activities on the prevention of dust in rivers and rivers. Through the publicity activities, we will establish the concept of self-protection of community people and school students and teachers, promote the efforts of the central and local authorities, and creatively promote through VR real-life short films. Bringing more diversified publicity methods, instead of going to the Beinanxi site by short films, it is like visiting the scene in person. With VR virtual reality glasses, it can deepen the people’s experience. The total number of participants reached 876, and the above publicity activities were integrated. The number of questionnaires returned was 859, and the overall activity planning satisfaction reached 93.36%. Through the implementation of the above-mentioned work items, in the 109th year and due to the reduction of the impact of the typhoon, the Eight Rivers Bureau and the Environmental Protection Bureau continued to implement the water covering method to keep the river bed continuously moist, even if the wind speed reached 3 during the noon period from September to November 12 to 15 (M/s) and above, under the conditions of northerly and northeasterly winds, there have been no river dust incidents in Taitung and Guanshan so far. In 109, the PM10 concentration in Taitung was only 17 (μg/m³), from 110 to 6 The average monthly PM10 concentration is 20 (μg/m³), which is the lowest in the country. By the end of July 110, Taitung City had no dust incidents for 23 consecutive months, and the effect of preventing dust from rivers and rivers was quite significant.

Beinan Creek, River Dust, Water cover method