隧道施工附属系统规划及布置方案2014.11.10.docxVIP

目录1.附属系统平面布置12.施工供风13.施工通风13.1通风量的确定13.2通风方案确定24.施工供水35.施工用电及洞内照明46.施工通信57.排水及排污处理系统布置57.1排水布置57.2排污处理系统布置58.拌和站布置6隧道施工附属系统规划及布置方案Method statement of plan and arrangement of affiliated infrastructures of tunnel 1.附属系统平面布置layout of affiliated infrastructures 隧洞施工附属系统规划布置分进口和出口两个单独系统独立考虑，分别包括供电系统、供风系统、通风系统及供排水系统、施工道路、洞口值班室及其它设施。具体详见附件一《隧道进口平面布置图（图号：隧道临建01）》，附件二《隧道出口平面布置图（图号：隧道临建02）》。The affiliated infrastructures of tunnel areperformedseparately and independently at inlet and outlet parts including the supplies of electricity, wind, ventilation, water and drainage, access road, duty rooms of portal and other infrastructure. The details are shown in the first attachment the layout of tunnel inlet (NO, temporary construction of tunnel 01) and the second attachment the layout of tunnel outlet (no, temporary construction of tunnel 02). 2.施工供风 wind supply 本项目洞内施工用风包括钻孔、喷射混凝土、工作面清理等，同一工作面上述项目不可同时作业。隧道开挖采用气腿式凿岩机进行钻孔，一个作业面安排10把YT28-Hand Drill，每台耗风3.5m3/min，总计35m3/min；另一个作业面喷射混凝土安排1台shot concreting machineTK600D，每台耗风6m3/min，则两个作业面最大总耗风量为：41m3/min。隧道进出口各布置3台21m3/min空压机，供风能力63m3/min＞41m3/min，能够满足开挖与喷浆同时作业供风需求。The wind supply of tunnel body construction shall be performed in drilling hole, shotcrete and cleanup work areas, ect. Ten sets of YT 28 hand drill shall be used in one work area with consuming wind 3.5m3/min/per, and total of 35 m3/min. one shotcrete machine TK 600D shall be assigned for shotcrete in anther work area with 6m3/min/per, thus, the maximum wind consume of two work areas is 41m3/min. three sets of air compressor of 21m3/min shall be separately assigned 隧道进出口各设一个压气站。高压风管采用直径φ168mm钢管，进洞后采用预埋φ25插筋安装在边墙上，高度距路面50cm。管道敷设至距开挖面20m时，安装分风器，并用高压软管接至工作面上的风动工具。3.施工通风3.1通风量的确定1）通风一般要求施工通风主要采用压入式通风方案，隧道风筒采用柔性风筒。隧道采用装载机装渣、自卸汽车运输方式施工，除施工人员、稀释炮烟供风量外，以稀释内燃机废气为控制指标。隧道施工要求达到开挖面风流中氧气含量不低于20%，工作面风速不小于0.15m/s，但不大于6m/s，提供新鲜空气每人3m3/min。2）通风量计算以一个工作面为例进行计算，参数拟定如下：① 按稀释炮烟要求，大断面隧洞需风量：V1=36Q/t；式中：Q-同时爆破的炸药量，取153kg；t-通风时间，取40min；② 冲淡废气按压入通风方式计算通风量：V2=21.4（QSL）1/2/t；式中：Q-同时爆破的炸药量，取153kg；S-隧