【摘要】：用勘探線剖面圖結(jié)合鉆井與其他資料進(jìn)行地質(zhì)模型三維重建是三維地質(zhì)建模的重要方法。其中勘探線剖面圖從二維坐標(biāo)系向三維坐標(biāo)系的轉(zhuǎn)換是三維建模的一個(gè)重要環(huán)節(jié)。針對(duì)當(dāng)前勘探線剖面坐標(biāo)轉(zhuǎn)換過程中勘探線上鉆孔并不總是布置在一條直線上(彎折勘探線)的特點(diǎn),該文提出了一種構(gòu)建彎折三維剖面的方法。該方法首先由剖面線的起點(diǎn)、終點(diǎn)以及勘探線上鉆孔孔口點(diǎn)作為轉(zhuǎn)折點(diǎn)構(gòu)建三維折勘探線剖面框架;然后將二維剖面圖上分段轉(zhuǎn)換剖面上要素點(diǎn)的二維坐標(biāo)到三維空間,并對(duì)跨越剖面轉(zhuǎn)折點(diǎn)的長(zhǎng)邊添加轉(zhuǎn)折控制點(diǎn);最后以青海某煤田勘探區(qū)的二維勘探線剖面圖數(shù)據(jù)為例,利用該勘探線剖面坐標(biāo)轉(zhuǎn)換算法,實(shí)現(xiàn)了二維勘探線剖面圖到三維勘探線剖面圖的轉(zhuǎn)化,結(jié)果表明三維剖面上保持了原二維剖面所表達(dá)的地質(zhì)模型的幾何形態(tài)。
[Abstract]:It is an important method of 3D geological modeling to reconstruct geological model by using exploration line profile combined with drilling and other data. The transformation of exploration line profile from 2D coordinate system to 3D coordinate system is an important link in 3D modeling. In view of the fact that the boreholes on the exploration line are not always arranged on a straight line (bending exploration line) in the process of coordinate transformation of the section of the exploration line, a method of constructing the curved 3D section is presented in this paper. In this method, the starting point, the end point and the hole opening point of the exploration line are used as the turning points to construct the profile frame of the 3D fold exploration line. Secondly, the 2D coordinate of the element points on the section is transferred to 3D space, and the turning point control point is added to the long side crossing the turning point of the section. Finally, taking the data of 2D profile of exploration line in a coalfield exploration area in Qinghai as an example, using the algorithm of coordinate transformation of the section of exploration line, the transformation from 2D profile to 3D profile is realized. The results show that the geometry of the geological model expressed by the original 2D profile is preserved on the 3D profile.
【作者單位】： 遼寧工程技術(shù)大學(xué)測(cè)繪與地理科學(xué)學(xué)院;中國(guó)測(cè)繪科學(xué)研究院地理信息工程重點(diǎn)實(shí)驗(yàn)室;中國(guó)礦業(yè)大學(xué)(北京)地球科學(xué)與測(cè)繪工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41272367) 國(guó)土資源部地質(zhì)信息技術(shù)重點(diǎn)實(shí)驗(yàn)室開發(fā)基金項(xiàng)目(201407)
【分類號(hào)】：P628

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