發(fā)布時(shí)間：2018-04-01 20:29

  本文選題：遼東灣北部　切入點(diǎn)：工程適宜性　出處：《國(guó)家海洋局第一海洋研究所》2014年碩士論文

【摘要】：遼東灣北部具有良好的油氣開(kāi)發(fā)前景，是我國(guó)第三大油田大力開(kāi)發(fā)的海域油氣資源區(qū)。然而海上油氣的勘探開(kāi)發(fā)是一項(xiàng)投資高風(fēng)險(xiǎn)高的工程。遼東灣北部處于雙臺(tái)子河等河流入海區(qū)域，受海陸互相作用影響具有多種災(zāi)害性地質(zhì)，對(duì)該海域的勘探開(kāi)發(fā)具有不同等級(jí)的影響。因此對(duì)該海域進(jìn)行工程地質(zhì)條件評(píng)價(jià)具有很高的實(shí)際價(jià)值。 本文在收集整理遼東灣北部地質(zhì)和地球物理資料的基礎(chǔ)上，概括總結(jié)了該區(qū)域內(nèi)存在的災(zāi)害地質(zhì)類(lèi)型，并采用層次分析法和模糊數(shù)學(xué)法對(duì)災(zāi)害地質(zhì)進(jìn)行了定量化分析，按照系統(tǒng)性原則、客觀性原則、可操作性原則、主導(dǎo)性原則建立了以地震烈度、埋藏古河道、淺層氣、地層承載力和海底侵蝕為評(píng)價(jià)指標(biāo)的風(fēng)險(xiǎn)評(píng)價(jià)體系，并賦予評(píng)價(jià)指標(biāo)不同權(quán)值，根據(jù)最大隸屬度原則計(jì)算得出海域內(nèi)的不同區(qū)塊的風(fēng)險(xiǎn)性等級(jí)。評(píng)價(jià)結(jié)果與遼東灣北部區(qū)域已知的地質(zhì)災(zāi)害分布特點(diǎn)相符，說(shuō)明該評(píng)價(jià)方法具有合理性和可行性，對(duì)于今后的海域開(kāi)發(fā)工作具有一定的參考價(jià)值。 根據(jù)對(duì)遼東灣北部區(qū)塊的風(fēng)險(xiǎn)性評(píng)價(jià)結(jié)果可知該區(qū)域大部分區(qū)塊工程地質(zhì)條件良好，高風(fēng)險(xiǎn)區(qū)即工程地質(zhì)條件不良區(qū)域的分布主要受埋藏古河道和淺層氣影響，，在河口等較高風(fēng)險(xiǎn)區(qū)需要注意災(zāi)害性地質(zhì)的防范工作。
[Abstract]:The northern part of Liaodong Bay has good prospects for oil and gas development. The exploration and development of offshore oil and gas is a project with high investment and high risk. The northern part of Liaodong Bay is located in the area of Shuangtaizi River and other rivers entering the sea. There are many kinds of disastrous geology affected by the interaction between sea and land, which have different effects on the exploration and development of the sea area. Therefore, it is of great practical value to evaluate the engineering geological conditions of the sea area. On the basis of collecting and arranging geological and geophysical data of northern Liaodong Bay, the types of disaster geology in this area are summarized, and the quantitative analysis of disaster geology is carried out by using analytic hierarchy process (AHP) and fuzzy mathematics method. According to the systematic principle, objectivity principle, maneuverability principle and leading principle, the risk evaluation system is established with seismic intensity, buried ancient river course, shallow gas, bearing capacity of stratum and undersea erosion as evaluation indexes. According to the principle of maximum membership degree, the risk grades of different blocks in the sea area are calculated. The evaluation results are consistent with the known distribution characteristics of geological hazards in the northern part of Liaodong Bay. It shows that the evaluation method is reasonable and feasible, and has certain reference value for the future development of sea area. According to the results of risk assessment in the northern part of Liaodong Bay, the engineering geological conditions of most blocks in this area are good, and the distribution of the high risk area, that is, the region with poor engineering geological conditions, is mainly affected by buried paleochannel and shallow gas. Attention should be paid to the prevention of disastrous geology in high risk areas such as estuaries.
【學(xué)位授予單位】：國(guó)家海洋局第一海洋研究所
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：P642;P744.4

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