【摘要】：在準(zhǔn)噶爾盆地車排子地區(qū)多期擠壓逆沖構(gòu)造背景下,石炭系火山巖斷裂伴生大規(guī)模構(gòu)造裂縫。綜合利用巖心、薄片、成像測(cè)井和地震等資料,對(duì)車排子地區(qū)石炭系斷層共生裂縫的發(fā)育程度進(jìn)行定量化表征及預(yù)測(cè)。研究結(jié)果表明:與逆斷層伴生的高角度剪切縫和擴(kuò)張裂縫是石炭系發(fā)育的主要裂縫類型,構(gòu)造裂縫的走向、傾角、密度及張開度等參數(shù)與斷層密切相關(guān);研究區(qū)斷裂級(jí)別可劃分為Ⅰ~Ⅲ級(jí),通過(guò)建立斷層共生裂縫密度分布函數(shù),得出3類斷層對(duì)裂縫發(fā)育的控制范圍分別為5.5、3.0、0.9 km。在充分考慮不同級(jí)別斷層對(duì)裂縫發(fā)育控制作用的基礎(chǔ)上,采用統(tǒng)計(jì)和回歸分析的方法定量分析石炭系斷裂強(qiáng)度,通過(guò)全區(qū)斷裂信息維到裂縫信息維的轉(zhuǎn)換,最終實(shí)現(xiàn)對(duì)車排子地區(qū)石炭系斷層共生裂縫發(fā)育程度的精細(xì)刻畫和定量表征。
[Abstract]:In the context of multi-stage compressional thrust structure in Chepaizi area, Junggar Basin, the Carboniferous volcanic faults are associated with large-scale structural fractures. The development degree of Carboniferous fault symbiotic fractures in Chepaizi area is quantitatively characterized and predicted by using core, thin slice, imaging logging and seismic data. The results show that high angle shear fractures and spreading fractures associated with the reverse faults are the main types of fractures developed in the Carboniferous. The strike, dip angle, density and opening degree of the structural fractures are closely related to the faults. The fault grade in the study area can be divided into 鈪，

本文編號(hào)：2285673