本文選題：隧道工程 + TSP系統(tǒng)��； 參考：《吉林大學(xué)》2014年碩士論文

【摘要】：近年來我國交通基礎(chǔ)設(shè)施發(fā)展迅猛，高速公路建設(shè)如火如荼，而我國幅員遼闊，各地地質(zhì)地形條件差異較大，公路中包含的隧道部分也不斷增多，尤其隨著2000年國家的西部大開發(fā)戰(zhàn)略實(shí)施之后，西南地區(qū)的高速公路里程陡然增加，隧道里程也隨之迅速增加。而在隧道的建設(shè)過程中，，由于地質(zhì)條件的復(fù)雜性以及技術(shù)條件所限，很多時(shí)候無法在前期勘察設(shè)計(jì)階段將遂址區(qū)隱藏的災(zāi)害性地質(zhì)條件全部勘測(cè)出來，這就為施工過程帶來了隱患。為了最大可能的減少地質(zhì)災(zāi)害的出現(xiàn)，保障隧道施工過程中的安全，本文對(duì)隧道地質(zhì)災(zāi)害進(jìn)行了施工風(fēng)險(xiǎn)評(píng)估與地質(zhì)災(zāi)害超前預(yù)報(bào)研究，主要研究?jī)?nèi)容及成果如下： 在對(duì)各種超前預(yù)報(bào)技術(shù)進(jìn)行比較的基礎(chǔ)上，重點(diǎn)分析了TSP隧道超前地質(zhì)預(yù)報(bào)分析系統(tǒng)的基本工作原理。在此基礎(chǔ)上，重點(diǎn)論述了巖體的彈性性質(zhì)、地震波的運(yùn)動(dòng)學(xué)理論以及彈性波理論，詳細(xì)說明了地震波在不同介質(zhì)中傳播的基本特性和衰減規(guī)律，體現(xiàn)了TSP隧道超前地質(zhì)預(yù)報(bào)分析系統(tǒng)在隧道超前地質(zhì)預(yù)報(bào)分析中的優(yōu)越性。 撫松隧道多數(shù)洞段埋藏較深，有F1斷層通過，基本垂直洞線分布，寬4.00m，為陡傾角斷層，洞身圍巖多數(shù)為弱透水巖體，滲透系數(shù)不大于0.1m/d，不會(huì)出現(xiàn)大量涌水現(xiàn)象，但隧道通過溝谷下部和斷層破碎帶涌水量增大時(shí)，需采取有效措施將地下水排出洞外，含鈣質(zhì)粉砂質(zhì)泥巖失水后易軟化崩解，工程地質(zhì)條件相對(duì)較差。在具體分析施工區(qū)域自然狀況與地質(zhì)構(gòu)造的基礎(chǔ)上，對(duì)測(cè)試現(xiàn)場(chǎng)進(jìn)行了科學(xué)、合理的傳感器及其附屬設(shè)備的布設(shè)，并嚴(yán)格按照規(guī)范步驟對(duì)檢測(cè)數(shù)據(jù)進(jìn)行采集和分析，從而確定出巖體特性以及圍巖等級(jí)。檢測(cè)結(jié)果表明，利用TSP系統(tǒng)對(duì)隧道進(jìn)行地質(zhì)超前預(yù)報(bào)具有較高的準(zhǔn)確率，而且預(yù)報(bào)距離較長(zhǎng)，數(shù)據(jù)處理時(shí)間較短，對(duì)施工影響較小。利用該系統(tǒng)可以為隧道施工提供重要的地質(zhì)信息，對(duì)隧道施工的安全順利進(jìn)行起到舉足輕重的指導(dǎo)作用。 通過對(duì)目前幾種常用隧道地質(zhì)災(zāi)害風(fēng)險(xiǎn)評(píng)估方法進(jìn)行比較，選定層次分析法對(duì)隧道地質(zhì)災(zāi)害風(fēng)險(xiǎn)進(jìn)行評(píng)估。根據(jù)遂址區(qū)圍巖等級(jí)的不同，分為三段風(fēng)險(xiǎn)評(píng)估區(qū)段，根據(jù)評(píng)估結(jié)果，結(jié)合風(fēng)險(xiǎn)因素核對(duì)表，得到Ⅲ級(jí)圍巖區(qū)段主要風(fēng)險(xiǎn)事件為塌方，Ⅳ級(jí)圍巖區(qū)段主要風(fēng)險(xiǎn)事件也為塌方，Ⅴ級(jí)圍巖區(qū)段主要風(fēng)險(xiǎn)事件為塌方和突水。 通過采用TSP地質(zhì)超前預(yù)報(bào)方法與地質(zhì)災(zāi)害風(fēng)險(xiǎn)評(píng)估方法綜合超前預(yù)報(bào)，可以更加準(zhǔn)確有效的確定隧道施工前方掌子面的地質(zhì)條件及相應(yīng)可能發(fā)生的風(fēng)險(xiǎn)事件，更加有針對(duì)性的進(jìn)行施工準(zhǔn)備工作及預(yù)防措施，對(duì)隧道施工的安全順利進(jìn)行起到舉足輕重的指導(dǎo)作用。
[Abstract]:In recent years, the transportation infrastructure of our country develops rapidly, the highway construction is in full swing, and our country has a vast territory, the geological and topographic conditions are quite different, the tunnel part included in the highway is also increasing. Especially with the implementation of the western development strategy in 2000, the expressway mileage in Southwest China increased sharply and the tunnel mileage increased rapidly. In the process of tunnel construction, due to the complexity of geological conditions and technical conditions, it is often impossible to survey all the hidden hazardous geological conditions in the completion area in the early stage of investigation and design. This brings hidden trouble to the construction process. In order to minimize the occurrence of geological hazards and ensure the safety of tunnel construction, this paper studies the construction risk assessment and geological hazard prediction of tunnel geological hazards. The main research contents and results are as follows: Based on the comparison of various advanced prediction techniques, the basic working principle of TSP tunnel advanced geological prediction analysis system is analyzed emphatically. On this basis, the elastic properties of rock mass, the kinematics theory of seismic wave and the theory of elastic wave are discussed, and the basic characteristics and attenuation law of seismic wave propagation in different media are explained in detail. The superiority of TSP tunnel advanced geological forecast and analysis system in tunnel advanced geological forecast analysis is demonstrated. Most of the holes in Fusong tunnel are deep buried, with F1 faults passing through, basically vertical tunnel line distribution, 4.00m wide, steep dip fault, most of the surrounding rock is weakly permeable rock mass, the permeability coefficient is not more than 0.1 m / d, and there will not be a large amount of water gushing. However, when the tunnel passes through the lower part of the gully and the fault fracture zone, it is necessary to take effective measures to drain the groundwater out of the tunnel. The calcareous silty mudstone is liable to soften and collapse after losing water, and the engineering geological conditions are relatively poor. Based on the concrete analysis of the natural condition and geological structure of the construction area, the scientific and reasonable arrangement of the sensor and its auxiliary equipment is carried out on the test site, and the test data are collected and analyzed strictly in accordance with the standard steps. The characteristics of rock mass and the grade of surrounding rock are determined. The test results show that the geological advance prediction of tunnel by TSP system has high accuracy, and the distance of prediction is longer, the time of data processing is shorter, and the influence on construction is less. The system can provide important geological information for tunnel construction and play an important role in guiding tunnel construction safely and smoothly. Through the comparison of several commonly used tunnel geological hazard risk assessment methods, AHP is selected to evaluate the tunnel geological hazard risk. According to the different grade of surrounding rock in the site area, it is divided into three sections of risk assessment section. According to the evaluation results and the risk factor check table, it is concluded that the main risk event of grade 鈪

本文編號(hào)：1903778