發(fā)布時間：2018-01-12 05:28

  本文關(guān)鍵詞：山東省北長山島海岸滑坡演化特征及成因機制　出處：《海洋學(xué)報》2016年09期 　論文類型：期刊論文

  更多相關(guān)文章： 北長山島 海岸滑坡 監(jiān)測預(yù)警

【摘要】：通過無人機航拍、探地雷達、三維激光掃描儀和位移傳感器等技術(shù)手段建立的海岸滑坡周期性和實時性監(jiān)測預(yù)警系統(tǒng),獲得了2012年3月至2014年9月的北長山島海岸滑坡體監(jiān)測數(shù)據(jù)。山東省北長山島海岸滑坡位于長島縣山后村附近,因開山采石造成山體陡立形成臨空危險面而處于極不穩(wěn)定的狀態(tài),內(nèi)部節(jié)理和裂隙及千枚巖層的存在是滑坡發(fā)生的主要內(nèi)在因素,而人為采石和暴雨等極端條件是導(dǎo)致滑坡發(fā)生最重要的影響因素。山體呈現(xiàn)整體下滑而頂部向外拉張的趨勢,累計滑動距離超過0.3m,高程變化5.0~10.0m,具有大雨大滑、小雨小滑的特點,其滑動距離與降雨量具有很強的正相關(guān)性,日降雨量大于80mm時滑坡體失穩(wěn)。自然因素與人為因素共同導(dǎo)致了北長山島滑坡體的發(fā)生,其成因機制特別是極端天氣條件下的演化特征研究對豐富和發(fā)展海島滑坡地質(zhì)災(zāi)害監(jiān)測預(yù)警理論體系具有十分重要的意義。
[Abstract]:Based on UAV aerial photography, ground penetrating radar, 3D laser scanner and displacement sensor, the periodical and real-time monitoring and warning system of coastal landslide is established. From March 2012 to September 2014, the slope body monitoring data of North Changshan Island were obtained. The coast landslide of North Changshan Island in Shandong Province is located near Shanhou Village, Changdao County. The mountain body is in a very unstable state because of the steep standing of the mountain body caused by Kaishan quarrying. The existence of internal joints and fissures and phyllite are the main internal factors for the occurrence of landslide. The extreme conditions such as artificial quarrying and rainstorm are the most important factors to cause the landslide. The mountain body shows the trend of overall sliding and the top of which is stretched out. The cumulative sliding distance is more than 0.3 m. The variation of elevation is 5.0 ~ 10.0 m, which has the characteristics of heavy rain and light rain, and its sliding distance has a strong positive correlation with rainfall. The landslide body is unstable when the daily rainfall is more than 80mm. The natural and human factors lead to the occurrence of the landslide body in North Changshan Island. The study of its genetic mechanism, especially the evolution characteristics under extreme weather conditions, is of great significance to enrich and develop the monitoring and early warning theory system of island landslide geological hazards.
【作者單位】： 國家海洋局第一海洋研究所海洋沉積與環(huán)境地質(zhì)國家海洋局重點實驗室;青島海洋科學(xué)與技術(shù)國家實驗室海洋地質(zhì)過程與環(huán)境功能實驗室;平邑縣住房和城鄉(xiāng)建設(shè)局;
【基金】：國家自然科學(xué)基金(41206054) 我國典型海島地質(zhì)災(zāi)害監(jiān)測及預(yù)警示范研究(201005010) 國家基金委-山東省聯(lián)合基金項目(U1606401)
【分類號】：P642.22;P736
【正文快照】： 273300)1引言海島地質(zhì)災(zāi)害系指對海島人民生命財產(chǎn)造成直接損失,或?qū)�海島地質(zhì)、生態(tài)環(huán)境和地貌景觀造成破壞,并影響海島經(jīng)濟社會發(fā)展和間接造成損失的分布于島陸、島岸、環(huán)島近岸海域的地質(zhì)現(xiàn)象和地質(zhì)作用[1]。隨著沿海經(jīng)濟的快速發(fā)展和空間資源的日趨緊張,迅猛的海島開發(fā)導(dǎo)致，

本文編號：1412910