【摘要】：巖體結(jié)構(gòu)面產(chǎn)狀是影響巖體力學(xué)性質(zhì)及工程穩(wěn)定性的重要地質(zhì)因素.從鉆孔孔壁電視平展圖上可較精確地提取結(jié)構(gòu)面跡線上不共線三點(diǎn)的相對(duì)二維坐標(biāo)(d,h),再利用空間解析幾何理論確定其三維空間相對(duì)坐標(biāo)(x,y,z),并求得結(jié)構(gòu)面法向矢量.根據(jù)鉆孔孔壁與坡面及結(jié)構(gòu)面產(chǎn)狀的空間幾何關(guān)系,在保持原點(diǎn)不變的情況下,采用空間坐標(biāo)變換的方法,將三維坐標(biāo)系z(mì)軸和y軸分別轉(zhuǎn)化為豎直方向z′和正北地理方向y′,并確定轉(zhuǎn)化后坐標(biāo)系空間的結(jié)構(gòu)面法向矢量.再從結(jié)構(gòu)面產(chǎn)狀的定義出發(fā),根據(jù)結(jié)構(gòu)面法向矢量與結(jié)構(gòu)面傾向、傾角的相關(guān)性,建立了一個(gè)空間幾何模型,通過該模型可求得任意平直坡面上任一鉆孔內(nèi)局部巖體結(jié)構(gòu)面的產(chǎn)狀.
[Abstract]:The occurrence of rock structural plane is an important geological factor affecting the mechanical properties and engineering stability of rock mass. The relative two-dimensional coordinates (dh) of non-collinear three points on the track line of the structural plane can be extracted more accurately from the TV flat map of the borehole wall, and then the three-dimensional relative coordinates (XJ) are determined by using the spatial analytic geometry theory, and the normal vector of the structural plane is obtained. According to the spatial geometric relationship between the borehole wall and the occurrence of slope and structural surface, the method of spatial coordinate transformation is used to keep the origin unchanged. The z axis and y axis of the three dimensional coordinate system are transformed into the vertical direction z' and the northward geographical direction respectively, and the normal vector of the structural plane of the transformed coordinate system space is determined. Based on the definition of the occurrence of the structural plane and the correlation between the normal vector of the structural plane and the orientation of the structural plane and the inclination angle, a spatial geometric model is established. By using this model, the occurrence of local rock mass structural planes in a borehole on an arbitrary straight slope can be obtained.
【作者單位】： 重慶大學(xué)煤礦災(zāi)害動(dòng)力學(xué)與控制國家重點(diǎn)實(shí)驗(yàn)室;重慶大學(xué)土木工程學(xué)院;
【基金】：國家自然科學(xué)基金面上項(xiàng)目(Nos.41172243,41472245) 重慶市國土房管科技計(jì)劃項(xiàng)目(No.CQGT-KJ-2014049)
【分類號(hào)】：TU45

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