广福隧道放射性辐射环境初步研究

A Preliminary Research on Radiational Environment of The Guangfu Tunnel

天汕国家重点高速公路蕉岭—梅县段位于粤北地区,该地区多山地丘陵,地质条件相对复杂。天汕高速公路广福隧道段岩体开挖现象非常严重,其放射性辐射环境状况尤其需要引起关注。文章通过对广福隧道地区的放射性辐射环境水平现状进行监测,结合历年放射性调查资料,评价高速公路选线地区的辐射环境与放射性状况。检测结果表明,根据路段放射性水平划分,广福隧道区段属C类路段。文章建议隧道施工过程中进行增设屏蔽层、及时通风、渣石及时外运等辐射防护措施,以达到辐射环境安全限值。

The Jiaoling-Meixian section of the major highway between Tianjin and Shanwei locates in the north of Guangdong Province.This regions are multi-mountainous,and the geological condition is relatively complex.The phenomenon of the highway’s escavation of the rock in the tunnel of Guangfu is extremely serious,and its radioactive environment codition should be paid attention especially.Accoding to the data of the monitor to the Guangfu section’s present situation of the radioactine environment level,and combining with the radioactivity investigation material over years,the thesis appraises radiation environment and the radioactive condition of the highway’s selected area.According to the road section’s division of radioactive level,the result of the examination indicated that the Guangfu tunnel section was attributed to C kind of rosd section.In order to the standard of radiational environment,it should be carried on the protection of radiation design,such as adding the shield layer,ventilation on time,the ore divertion and so on.