【摘要】 2008年汶川8.0级地震前后,天津市塘沽区曾先后2次在不同地点出现了地面冒泥浆现象。通过对2008年5、6月塘沽区出现的2次从地面向外冒泥浆现象的调查和分析,最终认为,产生该现象的直接原因是由于煤气公司铺设煤气管道时,采用了无开挖施工工艺,在地下打水平钻孔,因施工时所使用的泥浆压力过大,致使泥浆在上覆地层软弱的部位溢出地面,排除了该现象是地震前兆异常的可能。这一现象的最终落实,极大地稳定了当地民众的恐震心理。并且这一现象的落实结果立即在2008年6月26日宁河县发生的地面冒泥浆现象中得到了很好的应用。更多还原

【Abstract】 Before and after the 2008 Wenchuan Ms8.0 earthquake,emitting of mud appeared twice in Tanggu district of Tianjin and made tremendous social impact.On-site investigation carried out by experts of earthquake administration of Tianjin Municipality and concerned department shows that the gas company causes the phenomenon when they laid gas pipes adopting trenchless technology.In construction,they dug underground level drilling;the pressure of the mud is so large that the mud emitted from the weak part of the stratum.Therefore,the emitting of mud is not seismic precursor.The verification of the phenomenon greatly stabilizes the local people;soon after,the result was applied in the verification of mud emitting in Ninghe County on June 26th,2008.更多还原