非煤地层隧道有毒有害气体施工探测技术研究

Research on Construction Detection Technology of Toxic and Harmful Gas in Non-coal Stratum Tunnel

目前国内铁路工程行业针对如何探测非煤地层隧道的有毒有害气体暂无规范、标准可循,因此研究非煤地层隧道有毒有害气体探测技术具有十分重要的意义。为了尽可能使探测技术系统化、规范化,文章以大临铁路红豆山隧道探测技术为例,提出了地震波反射法(TSP)、地质雷达法、瞬变电磁法、钻探法(超前钻孔、加深炮孔、径向探孔)、有毒有害气体检测等技术措施相结合的综合探测技术。该技术成功应用于实际工程,较好地解决了探测非煤地层中有毒有害气体分布类型、位置、浓度、压力、涌出量等相关参数,能够为制定有毒有害气体防治技术措施提供依据,使施工安全得到了保障,取得了较好技术经验和经济收益,可为今后类似工程施工提供重要参考,为制定行业的标准和规范提供依据。

At present,the domestic railway engineering industry has no specifications and standards to follow for how to detect toxic and harmful gases in non-coal formation tunnels.So it is of great significance to study the detection technology of toxic and harmful gases in tunnels.To systematize and standardize detection techniques as much as possible,taking the Hongdoushan tunnel detection technology of Dalin railway as an example,this paper puts forward a comprehensive detection technology of harmful gas,which is a combination of advanced geological geophysical method(TSP),geological radar method,transient electromagnetic method,drilling method(advanced drilling,deepening blast hole,radial exploration hole),harmful gas detection and other technical measures.The technology has been successfully applied to practical projects,and has solved the detection of harmful gas distribution location,property,content,concentration,pressure,emission and other related parameters in non-coal strata.It can provide the basis for the formulation of harmful gas prevention and control technical measures,ensure the construction safety,obtain better technical and economic benefits,and provide important reference for similar project construction in the future and a basis for the establishment of industry standards and norms.