發(fā)布時(shí)間：2019-05-18 20:09

【摘要】：本文以孔隙砂巖為研究對(duì)象，采用CT掃描、數(shù)字圖像分析、統(tǒng)計(jì)學(xué)、分形幾何和拓?fù)鋵W(xué)等手段，定量研究和分析了砂巖的孔隙結(jié)構(gòu)特征。應(yīng)用分形控制函數(shù)表征了巖石孔隙結(jié)構(gòu)的復(fù)雜形態(tài)，結(jié)合改進(jìn)的模擬退火算法構(gòu)建了巖石孔隙結(jié)構(gòu)的分形重構(gòu)模型，分析了重構(gòu)模型與參考模型在幾何參數(shù)、拓?fù)湫再|(zhì)、統(tǒng)計(jì)特征、力學(xué)性質(zhì)與滲透率等方面的相似程度，驗(yàn)證了孔隙砂巖分形重構(gòu)模型的有效性。 針對(duì)孔隙巖石的滲流問題，本文在砂巖分形重構(gòu)模型的基礎(chǔ)上，構(gòu)建了孔隙巖石的有限元網(wǎng)格模型，采用有限元方法（FEM）模擬分析了單軸和三軸壓縮時(shí)孔隙巖石的變形破壞行為。采用格子玻爾茲曼方法（LBM）模擬了孔隙巖石內(nèi)部的流體滲流行為，并與滲流實(shí)驗(yàn)結(jié)果進(jìn)行對(duì)比，驗(yàn)證了LBM方法的有效性。采用LBM+FEM方法，研究了荷載作用下孔隙結(jié)構(gòu)變形對(duì)砂巖滲流性質(zhì)的影響，本文研究為定量分析和直觀描述深部巖體開采變形對(duì)流體滲流性質(zhì)的影響提供了新的方法與有效手段。
[Abstract]:In this paper, the pore structure characteristics of porous sandstone are quantitatively studied and analyzed by means of CT scanning, digital image analysis, statistics, fractal geometry and topology. The fractal control function is used to characterize the complex morphology of rock pore structure. Combined with the improved simulated annealing algorithm, the fractal reconstruction model of rock pore structure is constructed, and the geometric parameters and topological properties of the reconstruction model and reference model are analyzed. The similarity between statistical characteristics, mechanical properties and permeability verifies the effectiveness of the fractal reconstruction model of porous sandstone. Aiming at the seepage problem of pore rock, based on the fractal reconstruction model of sandstone, the finite element grid model of pore rock is constructed in this paper. The deformation and failure behavior of pore rocks under uniaxial and triaxial compression is simulated and analyzed by finite element method (FEM). The lattice Boltzmann method (LBM) is used to simulate the fluid seepage behavior in pore rocks, and the results are compared with the seepage experimental results to verify the effectiveness of LBM method. The influence of pore structure deformation on seepage properties of sandstone under load is studied by LBM FEM method. This paper provides a new method and effective means for quantitative analysis and intuitionistic description of the influence of mining deformation of deep rock mass on fluid seepage properties.
【學(xué)位授予單位】：中國(guó)礦業(yè)大學(xué)（北京）
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU45

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王寶善,陳楻,葛洪魁,宋麗莉,Wong Teng-Fong;高孔隙巖石變形的離散單元模型[J];地球物理學(xué)報(bào);2005年06期

2 張雪芬;陸現(xiàn)彩;張林曄;劉慶;;頁巖氣的賦存形式研究及其石油地質(zhì)意義[J];地球科學(xué)進(jìn)展;2010年06期

3 涂新斌,王思敬,岳中琦;香港風(fēng)化花崗巖細(xì)觀結(jié)構(gòu)研究方法[J];工程地質(zhì)學(xué)報(bào);2003年04期

4 尹艷樹;吳勝和;張昌民;李少華;尹太舉;;基于儲(chǔ)層骨架的多點(diǎn)地質(zhì)統(tǒng)計(jì)學(xué)方法[J];中國(guó)科學(xué)(D輯:地球科學(xué));2008年S2期

5 ;A statistical model for porous structure of rocks[J];Science in China(Series E:Technological Sciences);2008年11期

6 ;Numerical simulation of mechanisms of deformation,failure and energy dissipation in porous rock media subjected to wave stresses[J];Science China(Technological Sciences);2010年04期

7 王達(dá)健,陳書榮,張雄飛,謝剛;多孔介質(zhì)孔隙模型及其應(yīng)用——毛細(xì)管束模型[J];計(jì)算機(jī)與應(yīng)用化學(xué);2001年Z1期

8 陳占清,繆協(xié)興;影響巖石滲透率的因素分析[J];礦山壓力與頂板管理;2001年02期

9 陶振宇;試論巖石力學(xué)的最新進(jìn)展[J];力學(xué)進(jìn)展;1992年02期

10 孟巧榮;趙陽升;胡耀青;馮增朝;于艷梅;;焦煤孔隙結(jié)構(gòu)形態(tài)的實(shí)驗(yàn)研究[J];煤炭學(xué)報(bào);2011年03期

相關(guān)博士學(xué)位論文 前1條

1 劉學(xué)鋒;基于數(shù)字巖心的巖石聲電特性微觀數(shù)值模擬研究[D];中國(guó)石油大學(xué);2010年

，

本文編號(hào)：2480299