水土保持研究
水土保持研究
수토보지연구
RESEARCH OF SOIL AND WATER CONSERVATION
2001年
1期
10-16
,共7页
断层错动%水文资料%集集地震
斷層錯動%水文資料%集集地震
단층착동%수문자료%집집지진
台湾主要河川大都发源于中央山脉，上游坡降陡峻水流湍急，至中下流入平地后地势转缓，流速始渐滞缓。头汴坑溪一江桥位属头汴坑溪上游段，上游约500 m处受到1999年9月21日集集大地震断层错动影响，该河段右岸瞬间发生大规模山崩，致大量土石滑落将原有河道全部掩盖，水流无法向下游倾泄，随着地震后时间逐渐拉长，上游水位亦逐渐抬升，随时可能泛滥成灾而危及上下游居民生命财产安全。本研究收集该地区水文地文、地震后抢修抢险及复建工程设计施工相关资料，配合水理分析，提出妥善处理计划，俾供相关从业人员参考运用。
檯灣主要河川大都髮源于中央山脈，上遊坡降陡峻水流湍急，至中下流入平地後地勢轉緩，流速始漸滯緩。頭汴坑溪一江橋位屬頭汴坑溪上遊段，上遊約500 m處受到1999年9月21日集集大地震斷層錯動影響，該河段右岸瞬間髮生大規模山崩，緻大量土石滑落將原有河道全部掩蓋，水流無法嚮下遊傾洩，隨著地震後時間逐漸拉長，上遊水位亦逐漸抬升，隨時可能汎濫成災而危及上下遊居民生命財產安全。本研究收集該地區水文地文、地震後搶脩搶險及複建工程設計施工相關資料，配閤水理分析，提齣妥善處理計劃，俾供相關從業人員參攷運用。
태만주요하천대도발원우중앙산맥，상유파강두준수류단급，지중하류입평지후지세전완，류속시점체완。두변갱계일강교위속두변갱계상유단，상유약500 m처수도1999년9월21일집집대지진단층착동영향，해하단우안순간발생대규모산붕，치대량토석활락장원유하도전부엄개，수류무법향하유경설，수착지진후시간축점랍장，상유수위역축점태승，수시가능범람성재이위급상하유거민생명재산안전。본연구수집해지구수문지문、지진후창수창험급복건공정설계시공상관자료，배합수리분석，제출타선처리계화，비공상관종업인원삼고운용。
Most of rivers rise from the Central Mountain in Taiwan. These rivers have torrential flow with steep longitudinal slope upstream, and moderate flow with mild slope downstream. Yi-Chiang Bridge located at the upstream of Tou-Pien-Keng stream. Owing to“9*21” Chi-Chi Earthquake, a landslide happened in the right riverbank about 50 meters above from Yi-Chiang Bridge. It covered the channel, stopped the stream and increased the water stage by the time. It is necessary to canal the flood for the lives insurance. The dates of hydrology, the instant reconstruction, and the design and construction were collected in this study. They were used to do the hydraulic analysis and establish a proper flood control plan for the reference design.
