本文選題：松塔水電站 + 高地應(yīng)力　； 參考：《成都理工大學(xué)》2014年碩士論文

【摘要】：我國(guó)西部水資源豐富，水電項(xiàng)目是西部大開(kāi)發(fā)任務(wù)的重中之重。許多水電項(xiàng)目都涉及到壩區(qū)的高地應(yīng)力問(wèn)題。對(duì)高地應(yīng)力問(wèn)題的研究除了用各種試驗(yàn)方法測(cè)得直觀的數(shù)據(jù)，還可以通過(guò)對(duì)高地應(yīng)力現(xiàn)象如巖餅、片幫的研究來(lái)判斷該區(qū)域的地應(yīng)力狀況。 本文以西藏怒江松塔水電站壩區(qū)巖餅以及片幫為研究對(duì)象，在了解了國(guó)內(nèi)外研究現(xiàn)狀的基礎(chǔ)上，在野外調(diào)查中做了大量的鉆孔巖餅和平硐片幫編錄工作，結(jié)合現(xiàn)場(chǎng)平面水壓致裂法和空間應(yīng)力解除法試驗(yàn)數(shù)據(jù)，分析研究了壩區(qū)河床鉆孔巖餅的發(fā)育特征、平硐片幫的發(fā)育特征，總結(jié)了壩區(qū)的地應(yīng)力分布特征。同時(shí)采用數(shù)值方法，對(duì)巖餅以及片幫的形成過(guò)程進(jìn)行了模擬，分析了形成過(guò)程中的應(yīng)力重分布狀況，最后得出松塔壩區(qū)巖餅及片幫的形成機(jī)制。具體研究?jī)?nèi)容成果如下： （1）對(duì)平面水壓致裂法和空間應(yīng)力解除法地應(yīng)力實(shí)測(cè)結(jié)果進(jìn)行統(tǒng)計(jì)分析，，得出了松塔壩區(qū)水電站左右岸以及河床的最大主應(yīng)力、最小主應(yīng)力、中間主應(yīng)力的大小。分析得出最大水平主應(yīng)力的優(yōu)勢(shì)方向。 （2）對(duì)巖芯編錄資料進(jìn)行整理，分析了壩區(qū)巖餅的空間分布特征以及巖餅的幾何形態(tài)特征，總結(jié)了巖餅發(fā)育的影響因素。據(jù)經(jīng)驗(yàn)公式估算出了壩區(qū)巖餅形成的臨界應(yīng)力。用FLAC3D數(shù)值計(jì)算方法模擬巖餅的形成過(guò)程總結(jié)出了巖餅形成的三種類型，結(jié)合松塔壩區(qū)實(shí)際情況，判斷該壩區(qū)巖餅的形成機(jī)制。 （3）對(duì)片幫編錄資料進(jìn)行整理，分析了壩區(qū)的平硐片幫空間分布特征、片幫破裂面的特征、片幫發(fā)育影響因素。對(duì)片幫發(fā)育程度進(jìn)行了分級(jí)。對(duì)片幫樣品做了微觀測(cè)試研究，通過(guò)電鏡掃描得到的圖像來(lái)判斷片幫的形成類型和初始地應(yīng)力的方向。同時(shí)，作者用FLAC3D數(shù)值計(jì)算方法模擬片幫的形成過(guò)程，研究了片幫發(fā)育部位以及發(fā)育程度與初始地應(yīng)力場(chǎng)的最大主應(yīng)力之間的關(guān)系，結(jié)合工程實(shí)際情況，判斷該壩區(qū)片幫的形成機(jī)制。
[Abstract]:Water resources are rich in Western China. Hydropower projects are the most important task of western development. Many hydropower projects are involved in the high stress problem in the dam area. The condition of ground stress.
In this paper, taking the rock cake and the slice of the dam area of the Nu River of Nu River in the dam area as the research object, on the basis of understanding the present situation at home and abroad, a large number of drilling rock cake and cavern help cataloging work have been done in the field investigation, and the river bed drilling in the dam area is analyzed and studied in combination with the field plane water pressure cracking method and the test data of the spatial stress relief method. The characteristics of the development of the rock cake and the development characteristics of the cavern slice help have summarized the distribution characteristics of the geostress in the dam area. At the same time, the numerical method is used to simulate the formation process of the rock cake and the slice help, and the stress redistribution in the formation process is analyzed. Finally, the formation mechanism of the rock cake and the slice gang in the pine tower dam area is obtained. The concrete research content results are as follows. Below:
(1) according to the statistical analysis of the in-situ stress measured results of the plane hydraulic fracturing and the spatial stress relief method, the maximum principal stress, the minimum principal stress and the middle principal stress of the river bed in the hydropower station of the pine tower dam area are obtained, and the dominant direction of the maximum horizontal principal stress is analyzed.
(2) to sort out the rock core cataloguing data, analyze the spatial distribution characteristics of the rock cake in the dam area and the geometric shape characteristics of the rock cake, and summarize the influence factors of the development of the rock cake. According to the empirical formula, the critical stress of the formation of the rock cake in the dam area is estimated. Three kinds of the formation of the rock cake are summed up by the FLAC3D numerical calculation method. Based on the actual situation of the dam, the formation mechanism of rock cake is determined.
(3) to sort out the data of the sheet Gang cataloguing, the characteristics of the space distribution of the cavern section, the characteristics of the fracture surface and the influence factors of the development of the slice help were analyzed. The development degree of the slice help was classified. The microcosmic test of the slice help samples was done. The formation type and initial crustal stress were judged by the image image obtained by the scanning electron microscope. At the same time, the author uses the FLAC3D numerical method to simulate the forming process of the flakes, and studies the relationship between the development position of the flakes and the maximum principal stress of the initial geostress field. The formation mechanism of the section of the dam is judged by the actual situation of the project.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV221.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 徐佩華,陳劍平,黃潤(rùn)秋,嚴(yán)明;雅礱江河谷下切三維數(shù)值模擬分析——解放溝模型應(yīng)力場(chǎng)分析[J];吉林大學(xué)學(xué)報(bào)(地球科學(xué)版);2003年02期

2 孫禮健;朱元清;;初始地應(yīng)力場(chǎng)分析方法的研究[J];地震地磁觀測(cè)與研究;2008年03期

3 王士天;黃潤(rùn)秋;;巖芯餅裂機(jī)制的數(shù)值模擬研究[J];地質(zhì)災(zāi)害與環(huán)境保護(hù);1990年02期

4 尚岳全;孫琪;;天荒坪電站巖芯餅化機(jī)制分析[J];地質(zhì)災(zāi)害與環(huán)境保護(hù);1991年02期

5 李錦飛;瑯s∩匠樗钅艿繒境Х課恢眉爸嵯叻較虻撓嘔≡馵J];工程地質(zhì)學(xué)報(bào);2003年04期

6 徐則民,黃潤(rùn)秋,陳穎輝,羅杏春;河谷應(yīng)力集中及巖體響應(yīng)[J];工程勘察;2003年01期

7 馬鵬;趙國(guó)平;張永永;吳春耕;;錦屏超高壓巖體水壓致裂法地應(yīng)力測(cè)試系統(tǒng)研制與應(yīng)用[J];長(zhǎng)江科學(xué)院院報(bào);2012年08期

8 馬雪晴;霍亮;郭永祥;;深部巷道分層圍巖變形特征研究[J];煤炭工程;2013年02期

9 余衛(wèi)平;楊健;汪小剛;賈志欣;;峽谷地區(qū)大型地下洞室群巖體初始地應(yīng)力場(chǎng)反演分析[J];水文地質(zhì)工程地質(zhì);2007年02期

10 白世偉;李光煜;;二灘水電站壩區(qū)巖體應(yīng)力場(chǎng)研究[J];巖石力學(xué)與工程學(xué)報(bào);1982年01期

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