發(fā)布時(shí)間：2018-04-13 12:39

  本文選題：巖體結(jié)構(gòu)面 + 數(shù)字近景攝影測(cè)量��； 參考：《南京理工大學(xué)》2015年碩士論文

【摘要】：結(jié)構(gòu)面是巖體中力學(xué)強(qiáng)度相對(duì)較薄弱的部位,對(duì)巖體的變形、破壞方式和水力學(xué)等性質(zhì)起著重要的控制作用,因而結(jié)構(gòu)面的研究是巖體力學(xué)中的重要內(nèi)容。隨著數(shù)字信息技術(shù)的發(fā)展,巖體結(jié)構(gòu)面的量測(cè)統(tǒng)計(jì)方法已由傳統(tǒng)繁瑣、低效的現(xiàn)場(chǎng)接觸式測(cè)量方式轉(zhuǎn)變?yōu)楦呔�度、高效率的非接觸式量測(cè),如近景攝影測(cè)量法和三維激光掃描等,以此為基礎(chǔ)建立的結(jié)構(gòu)面三維網(wǎng)絡(luò)模型,為工程巖體的穩(wěn)定性、滲透性等工程特性的研究奠定了基礎(chǔ),對(duì)工程建設(shè)具有很強(qiáng)的現(xiàn)實(shí)意義。本文以甘肅北山花崗巖巖體結(jié)構(gòu)面為研究對(duì)象,以多基線數(shù)字近景攝影測(cè)量為基礎(chǔ),結(jié)合點(diǎn)云模型拼接及曲面重構(gòu)的方法來獲取巖體結(jié)構(gòu)面的參數(shù)信息。同時(shí),為了獲得更加精確的結(jié)構(gòu)面三維網(wǎng)絡(luò)模型,提出了將巖體分區(qū)與差分進(jìn)化算法相結(jié)合,以實(shí)測(cè)面密度為基準(zhǔn)的結(jié)構(gòu)面體密度優(yōu)化方法,用該方法建立的結(jié)構(gòu)面網(wǎng)絡(luò)模型,在工程應(yīng)用領(lǐng)域有良好的發(fā)展前景。本文取得的研究成果具體如下：(1)采用多基線數(shù)字近景攝影測(cè)量的匹配與交會(huì)求解方法,進(jìn)行露頭面特征點(diǎn)三維坐標(biāo)求解,通過與單基線方法求得的結(jié)果以及實(shí)測(cè)值進(jìn)行對(duì)比,可得該方法有更高的解譯精度；(2)利用點(diǎn)云模型拼接的方法,對(duì)范圍較大測(cè)區(qū)進(jìn)行模型重構(gòu),有效還原了露頭面的完整形態(tài),并在重構(gòu)模型上導(dǎo)入裂隙路徑,同時(shí)布置連續(xù)的圓形與矩形模擬測(cè)窗,計(jì)算可得結(jié)構(gòu)面面密度與平均跡長(zhǎng)；(3)在普通PC平臺(tái)上,基于差分進(jìn)化算法開發(fā)了對(duì)于常規(guī)DLT法無法求解的成線狀分布的結(jié)構(gòu)面產(chǎn)狀解譯軟件,并將計(jì)算結(jié)果與實(shí)測(cè)統(tǒng)計(jì)值進(jìn)行對(duì)比,經(jīng)實(shí)例驗(yàn)證求解精度較高,滿足實(shí)際工程的需要；(4)利用差分進(jìn)化算法編制了結(jié)構(gòu)面體密度優(yōu)化的計(jì)算軟件,同時(shí)可得與該分區(qū)面密度和體密度相對(duì)應(yīng)的裂隙圓盤空間位置分布的參數(shù)信息,用此數(shù)據(jù)可以建立確定性程度更高的結(jié)構(gòu)面三維網(wǎng)絡(luò)模型。
[Abstract]:Structural plane is a relatively weak part of rock mass, which plays an important role in controlling the deformation, failure mode and hydraulic properties of rock mass, so the study of structural plane is an important content in rock mass mechanics.With the development of digital information technology, the statistical method of rock mass structure plane measurement has changed from the traditional cumbersome and inefficient field contact measurement method to the high precision and high efficiency non-contact measurement method.The 3D network model of structural plane based on close-range photogrammetry and 3D laser scanning has laid a foundation for the study of engineering characteristics such as stability and permeability of engineering rock mass and has a strong practical significance for engineering construction.In this paper, the structural plane of the granite rock mass in Beishan, Gansu Province is taken as the research object, and the parameter information of the rock mass structural joint is obtained based on the multi-baseline digital close-range photogrammetry and the method of combining the cloud model and the surface reconstruction.At the same time, in order to obtain a more accurate three-dimensional network model of structural plane, a structural plane density optimization method, which combines rock mass zoning with differential evolution algorithm and based on the measured surface density, is proposed, and the structural plane network model is established by this method.It has a good prospect in engineering application field.The research results obtained in this paper are as follows: (1) the method of matching and rendezvous of multi-baseline digital close-range photogrammetry is used to solve the 3D coordinates of outcrop feature points, and the results obtained by the single-baseline method and the measured values are compared.It can be concluded that this method has higher interpretation accuracy. By using the method of point cloud model splicing, the model reconstruction of a large range of measured area is carried out, and the complete shape of outcrop surface is reduced effectively, and the crack path is introduced on the reconstruction model.At the same time, continuous circular and rectangular simulated windows are arranged to calculate the surface density and average trace length of the structure on the common PC platform.Based on the differential evolution algorithm, a structure plane shape interpretation software for linear distribution, which can not be solved by conventional DLT method, is developed, and the calculated results are compared with the measured statistical values, and the accuracy of the solution is proved to be high by an example.In order to meet the needs of practical engineering, the software of optimization of structural surface density is developed by using differential evolution algorithm, and the parameter information of the spatial distribution of crack disk corresponding to the area density and volume density of the structure can be obtained at the same time.Using this data, a more deterministic 3D network model of structural plane can be established.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU45

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 李天子;郭輝;;多基線近景攝影測(cè)量的平面地表變形監(jiān)測(cè)[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年08期

2 焦春林;高滿屯;史儀凱;;基于立體視覺的3D地形拼接[J];計(jì)算機(jī)工程與應(yīng)用;2008年23期

3 蘇培莉;谷拴成;韋正范;李金華;;巖體結(jié)構(gòu)面網(wǎng)絡(luò)的計(jì)算機(jī)模擬[J];中國(guó)礦山工程;2006年04期

4 吳志勇,聶德新,李雪峰,張景科;基于數(shù)碼圖像的巖體結(jié)構(gòu)信息采集處理研究[J];巖石力學(xué)與工程學(xué)報(bào);2003年S2期

5 楊春和;包宏濤;王貴賓;梅濤;;巖體節(jié)理平均跡長(zhǎng)和跡線中點(diǎn)面密度估計(jì)[J];巖石力學(xué)與工程學(xué)報(bào);2006年12期

6 王鳳艷;陳劍平;付學(xué)慧;石丙飛;;基于VirtuoZo的巖體結(jié)構(gòu)面幾何信息獲取研究[J];巖石力學(xué)與工程學(xué)報(bào);2008年01期

相關(guān)碩士學(xué)位論文 前2條

1 李婭婷;雙目近景攝影測(cè)量中匹配問題的研究[D];武漢大學(xué);2004年

2 李勇;基于圖像處理的隧道掌子面地質(zhì)信息研究[D];西南交通大學(xué);2009年

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本文編號(hào)：1744524