本文選題：災(zāi)害地質(zhì)因素 + 分布特征��； 參考：《石家莊經(jīng)濟(jì)學(xué)院》2014年碩士論文

【摘要】：隨著海洋開(kāi)發(fā)與利用事業(yè)的發(fā)展，海洋工程建設(shè)日益增多，海洋災(zāi)害地質(zhì)對(duì)人類賴以生存的環(huán)境和生命財(cái)產(chǎn)構(gòu)成了很大的威脅。青島市地處我國(guó)東中部沿海，隨著海洋工程建設(shè)事業(yè)的發(fā)展，海洋地質(zhì)災(zāi)害研究的重要性也日益凸顯出來(lái)。青島近海海域地質(zhì)環(huán)境較復(fù)雜，孕育著多種災(zāi)害地質(zhì)因素。由于該區(qū)經(jīng)濟(jì)發(fā)達(dá)，已經(jīng)或者正在進(jìn)行大量的海洋工程建設(shè)，因此研究本區(qū)海岸帶災(zāi)害地質(zhì)具有重要的理論與實(shí)際意義。 本文在1:25萬(wàn)青島幅海洋區(qū)域地質(zhì)調(diào)查項(xiàng)目的支持下利用在青島近海海域所獲得的3000km的淺地層剖面資料、1100km的側(cè)掃聲納資料、1800km的單道地震資料及同步水深測(cè)量資料并收集整理了大量該區(qū)域的歷史地質(zhì)資料，分別對(duì)研究區(qū)內(nèi)海底地形地貌、活動(dòng)性斷裂、埋藏古河道、不規(guī)則基巖面的分布特征及控制因素進(jìn)行了研究，發(fā)現(xiàn)青島近海海域潛在災(zāi)害地質(zhì)因素特征主要包括以下幾個(gè)方面： 1.根據(jù)單道地震資料推斷，在青島近海在千里巖西側(cè)存在一條北東向走向的活動(dòng)斷裂。該活動(dòng)斷層與一級(jí)構(gòu)造（千里巖北緣斷裂）相吻合推測(cè)為新的斷裂是在老斷裂的基礎(chǔ)上繼承老斷裂發(fā)育起來(lái)的，或者是老斷裂再活動(dòng)誘發(fā)產(chǎn)生的次級(jí)小斷裂。 2.淺地層剖面資料及單道地震資料顯示研究區(qū)內(nèi)分布全新世和中更新世兩期埋藏古河道。其中全新世埋藏古河道有四條較大的古河道主要分布在乳山口、丁字灣、鰲山灣、嶗山附近海域。中更新世古河道主要分布在嶗山以東海域，寬度較大,主河道走向南東東，隨后分為兩支，一支折向北東，一支折向南東。 3.淺層氣在垂向上分布很淺，其頂界深度距海底10m左右的位置，且集中在5個(gè)區(qū)域基本上處于同一層位上成大面積層狀分布。主要分布在丁字灣河口形成的古河道周圍且與該期古河道沉積物處于同一層位。推測(cè)為海底古河道沉積物以富含有機(jī)質(zhì)的陸源碎屑為主，含有腐殖型為主的有機(jī)質(zhì)，通過(guò)生物降解作用而形成的淺層氣藏。 4.不規(guī)則基巖主要集中在6個(gè)區(qū)域：千里巖附近；丁字灣河口附近；嶗山東部及南部靠近島嶼；南島附近；膠州灣；其中膠州灣內(nèi)基巖主要分布在紅島附近及灣口附近區(qū)域。總體來(lái)看，不規(guī)則基巖面主要分布在近岸或靠近礁石、島嶼的地方。 5.潮流沙脊主要分布在膠州灣口和嶗山西南方向。膠州灣口的潮流沙脊南北延伸，沙脊和沙脊之間被潮道分開(kāi)，，形成溝－脊相間地形。 6.根據(jù)側(cè)掃資料顯示研究區(qū)內(nèi)的侵蝕槽主要分布在膠州灣灣口和大橋?yàn)碁晨诟浇皪魃筋^南岸近岸。 7.研究區(qū)內(nèi)主要分布三個(gè)河口三角洲大沽河－洋河復(fù)合三角洲、丁字灣河口三角洲、乳山灣河口三角洲。 新構(gòu)造運(yùn)動(dòng)、海平面變化、沉積動(dòng)力過(guò)程是影響該區(qū)災(zāi)害地質(zhì)分布的主要因素。近海災(zāi)害地質(zhì)因素分布區(qū)域通常對(duì)工程建筑有一定的危害性，在進(jìn)行海岸帶及海岸工程建設(shè)施工前應(yīng)充分考慮其影響。
[Abstract]:With the development of marine development and utilization, the construction of marine engineering is increasing. The marine disaster geology poses a great threat to the living environment and life and property of human being. Qingdao is located in the East and central coast of China. With the development of marine engineering construction, the importance of marine geological disasters is becoming more and more important. The geological environment of the coastal waters of Qingdao is more complex and is pregnant with a variety of disaster geological factors. Because of the economic development of this area, a large number of marine engineering construction has been or is being carried out. Therefore, it is of great theoretical and practical significance to study the disaster geology of the coastal zone.
In this paper, under the support of the Qingdao ocean regional geological survey of 1:25 million, the shallow stratigraphic data of 3000km obtained in the coastal waters of Qingdao, the side scan sonar data of 1100km, the single channel seismic data of 1800km and the synchronous water depth survey data, and a large number of historical geological data of the region are collected and collated, respectively, on the inland sea of the study area. It is found that the characteristics of the potential disaster geological factors in the coastal waters of Qingdao include the following aspects: the bottom topography, the active fault, the buried ancient river, the distribution characteristics of the irregular bedrock surface and the control factors.
1. according to the single channel seismic data, it is concluded that there is a northward movement fault in the west side of the Qingdao sea at the west side of the killi rock. The active fault coincides with the primary structure (the northern edge fault of the kilo rock) conjectured that the new fault was developed from the old fault on the basis of the old fault, or the secondary fault induced by the reactivity of the old fracture. Small fracture.
The 2. shallow stratigraphic section data and single channel seismic data show that the Holocene and Middle Pleistocene buried paleo channels are distributed in the study area. Among them, four larger paleo river channels are mainly distributed in yamamaguchi, Ding yam Bay, Ao Shan Bay, and near Laoshan. The Middle Pleistocene paleo channels are mainly distributed in the east of Laoshan. The main river runs eastward and then divides into two branches, one to the north and the other to the south.
3. the shallow gas is very shallow in vertical distribution, and its top boundary depth is about 10m in the bottom of the sea, and the 5 regions are mainly distributed in a large area on the same horizon. It is mainly distributed around the paleo river channel formed in the estuary of the Ding Zi Wan and is in the same horizon with the sediments of the ancient river channel. Terrigenous clastic organic matter, mainly organic matter with humic type, is a shallow gas reservoir formed by biodegradation.
4. irregular bedrock mainly concentrated in 6 regions: near the thousand li rock; near the estuary of tine Bay; near the island in the East and south of Laoshan; near the South Island; the Gulf of Jiaozhou; of which the bedrock in the Jiaozhou Bay is mainly located near the red island and near the mouth of the Bay. The place.
5. the tidal sand ridges are mainly distributed in the Jiaozhou bay mouth and the southwestern direction of Laoshan. The tidal sand ridge of the Jiaozhou bay mouth extends north-south, and the sand ridges and the sand ridges are separated by the tidal channels to form the trench ridge topography.
6. according to the side scan data, the erosion trough in the study area is mainly located near the Jiaozhou bay mouth and the bridge bay mouth and the coast near the south coast of Laoshan.
7. the study area mainly distributes three estuarine delta Dagu river the Yanghe River composite Delta, delta estuary Delta, Rushan Bay Estuary Delta.
The new tectonic movement, the sea level change and the sedimentary dynamic process are the main factors that affect the distribution of the disaster geology in this area. The distribution area of the offshore disaster geological factors usually has some harm to the engineering construction, and the shadow should be fully considered before the construction of the coastal zone and the coastal engineering.
【學(xué)位授予單位】：石家莊經(jīng)濟(jì)學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：P694;P736

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