本文選題：隧道工程 + 斷層產(chǎn)狀算法　； 參考：《公路交通科技》2017年12期

【摘要】：斷層產(chǎn)狀計(jì)算是工程勘探中一個(gè)重要內(nèi)容,一般利用地質(zhì)羅盤(pán)和皮尺測(cè)量斷層露頭的方法進(jìn)行計(jì)算,其運(yùn)用范圍受到了極大限制。利用高密度電法勘探可得到沿測(cè)線走向剖面上地下構(gòu)造的電阻率剖面,結(jié)合已知的地層信息可以判斷斷層的存在和規(guī)模,但無(wú)法準(zhǔn)確確定其產(chǎn)狀。文中提出采用雙線電法勘探的方法分析并準(zhǔn)確計(jì)算斷層產(chǎn)狀,包括傾向、傾角和寬度指標(biāo)。該方法假設(shè)斷層同時(shí)切割兩條測(cè)線,且在測(cè)線間斷層結(jié)構(gòu)面無(wú)較大褶曲,可簡(jiǎn)化為平面。計(jì)算過(guò)程中,首先根據(jù)單線電阻率剖面判斷斷層的范圍和邊界,采用最小二乘法確定其切割面參數(shù),然后根據(jù)斷層在兩個(gè)剖面上的投影反算斷層的傾向、傾角,最后根據(jù)斷層和電阻率剖面的空間交互關(guān)系反推斷層寬度。文中詳細(xì)介紹了該方法的理論基礎(chǔ)和推導(dǎo)過(guò)程,并對(duì)其運(yùn)用條件進(jìn)行了闡述。文中對(duì)該方法在廈門(mén)市某隧道勘探中斷層產(chǎn)狀計(jì)算成果進(jìn)行了歸納、統(tǒng)計(jì)和分析,并選擇斷層出露地面位置的計(jì)算結(jié)果與采用傳統(tǒng)地質(zhì)羅盤(pán)測(cè)量結(jié)果進(jìn)行了對(duì)比分析。結(jié)果表明根據(jù)文中計(jì)算分析方法得出的斷層產(chǎn)狀和寬度與實(shí)際測(cè)量結(jié)果相比有一定誤差,傾向相差3°~5°,傾角相差2°~6°,寬度相差11%~16%,主要是因?yàn)閿鄬友由爝^(guò)程中受地質(zhì)構(gòu)造作用而發(fā)生幾何性狀變化引起的,但是在較小的勘探區(qū)域內(nèi)仍然能夠較為準(zhǔn)確地反映實(shí)際情況。
[Abstract]:The calculation of fault occurrence is an important content in engineering exploration. The method of measuring outcrop of fault by geological compass and scale is generally used, and its application scope is greatly limited. The resistivity profiles of underground structures along the strike profile can be obtained by high-density electrical prospecting. The existence and scale of faults can be judged by combining the known formation information, but the occurrence of faults can not be determined accurately. In this paper, a method of double-wire electrical exploration is proposed to analyze and accurately calculate the occurrence of faults, including the indexes of inclination, inclination and width. This method assumes that the fault cuts two measuring lines at the same time, and there is no large fold on the discontinuous layer of the measuring line, which can be simplified as a plane. In the calculation process, the range and boundary of the fault are judged according to the single line resistivity profile, the parameters of the cutting surface are determined by the least square method, and then the inclination and inclination of the fault are inversely calculated according to the projection of the fault on the two sections. Finally, the width of fault is pushed back according to the spatial interaction between fault and resistivity profile. The theoretical basis and derivation process of this method are introduced in detail, and its application conditions are described. In this paper, the calculation results of fault occurrence in a tunnel exploration in Xiamen City are summarized, analyzed, and the calculated results of fault outcrop surface location are compared with those of traditional geological compass survey. The results show that the fault occurrence and width obtained by the calculation and analysis method in this paper have some errors compared with the actual measurement results. The tendency difference is 3 擄/ 5 擄, the dip angle is 2 擄/ 6 擄, and the width is 11 擄/ 16 擄, which is mainly caused by the change of geometric character in the process of fault extension by geological structure, but it can still reflect the actual situation more accurately in the smaller exploration area.
【作者單位】： 廣州市中心區(qū)交通項(xiàng)目領(lǐng)導(dǎo)小組辦公室;
【分類(lèi)號(hào)】：U452.11

【相似文獻(xiàn)】

相關(guān)期刊論文 前8條

1 孔慶征，首培　;淺水下基巖斷層的微振動(dòng)觀測(cè)試驗(yàn)[J];工程勘察;1994年02期

2 鄧建紅;李文彪;張定山;;高密度電阻率法在高等級(jí)公路邊坡勘察中的應(yīng)用[J];巖土工程技術(shù);2008年01期

3 周峰;藍(lán)澤鸞;林文東;;高密度電阻率法在隧道勘察中的應(yīng)用[J];工程地球物理學(xué)報(bào);2013年05期

4 廖精峗;;高密度電阻率法在高速公路路基勘探中的應(yīng)用[J];江西煤炭科技;2013年04期

5 周佃剛;李彬;皇建;;高密度電阻率法在淺埋隧道勘察中的應(yīng)用[J];勘察科學(xué)技術(shù);2014年02期

6 郝亞林;;高密度電阻率法在公路工程地質(zhì)勘探中的應(yīng)用[J];科技風(fēng);2012年09期

7 樊耀武;王啟軍;胡延林;楊磊;;高密度電阻率法在工程勘察中的應(yīng)用[J];鐵道工程學(xué)報(bào);2009年08期

8 劉文偉,杜華坤,朱自強(qiáng),鄒聲杰;高密度電阻率法在常張高速公路軟土地基勘察中的應(yīng)用[J];巖土工程界;2004年05期

相關(guān)碩士學(xué)位論文 前2條

1 李潔;斷層區(qū)域隧道爆破開(kāi)挖的動(dòng)力響應(yīng)分析及注漿方案優(yōu)化[D];長(zhǎng)沙理工大學(xué);2014年

2 尹常斌;高密度電法探測(cè)既有公路路基濕度場(chǎng)的應(yīng)用技術(shù)研究[D];長(zhǎng)沙理工大學(xué);2014年

，

本文編號(hào)：2106468