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中文摘要：
与普通公路或铁路隧道相比,城市地铁一般从城市道路下方通过,因此,城市地铁超前预报（主要指物探类预报）的实施可分洞内和洞外两部分。但由于地铁埋深较浅,干扰因素众多,需要开展综合超前预报。通过分析岩溶地质条件下的城市地铁超前预报特点,利用地质雷达和高密度电法各自优势和互补特点,提出洞内开展地质雷达超前预报和洞外开展高密度电法与地质雷达相结合的综合预报方法。辅以工程应用实例,详细分析该综合预报方法的实施与综合解释过程,证明该综合预报方法对岩溶地质条件下的城市地铁超前预报的有效性。
英文摘要：
Compared to the normal road or railway tunnels,metro passed through the stratum over the road,so that the metro advanced prediction（mainly geophysical class prediction） implementation can be divided into two parts：prediction inside and outside the tunnel.However,due to shallow depth of the metro and many factors of interference,it s need to use the comprehensive advanced prediction.By analyzing the metro characters under the karst geological conditions,using the advantages of ground penetrating radar（GPR） and resistivity tomography,a comprehensive prediction method is proposed to carry out GPR forecasts inside and carry out the forecasts of the combination of resistivity tomography and GPR method outside;then through an engineering application,a detailed analysis of the implementation of comprehensive and comprehensive forecasting methods is made to prove that the comprehensive prediction method is effective for metro advanced prediction under the conditions of karst geology.
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