回风斜井风硐施工作业规程

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1、斜沟煤矿一号回风斜井风硐施工作业规程编制单位：中煤一建63处斜沟项目部编制日期：2009.9.1625目录第一章：概况··············································1第一节：工程概况··········································1第二节：地质水文情况·····································1第二章：巷道支护··········································

2、1第一节：风硐断面设计及支护································1第三章：施工方法·········································2第一节：施工方案··········································2第二节：明槽开挖施工·····································2第三节：25回风斜井井筒开口施工·····························2第四节：混凝土浇筑····

3、···································2第五节回填土···········································2第六节：文明施工要求·····································4第四章生产系统·········································9第一节：劳动组织·········································9第五章质量保证措施·············

4、························9第六章：安全技术措施·····································9第一节：明槽开挖表土安全技术措施·························10第二节：25喷浆安全技术措施································10第三节：明槽爆破安全技术措施·····························13第四节：脚手架工作台搭设安全措施························13第五节:

5、砌碹与支模安全技术措施··························16第六节：浇筑混凝土安全技术措施···························19第七节：其他安全技术措施·································21斜沟煤矿一号回风斜井风硐施工作业规程第一章概况第一节工程概况斜沟煤矿一号回风斜井安全出口位于回风斜井工业广场，设计全长11.627m，采用半圆拱形断面，混凝土支护，是一条沟通一号回风斜井井筒和地面安全出口的通道。安全出口与回风斜井井筒垂直相交，平面夹

6、角为90°，自地表向下依次分为上部平巷、中部斜巷、下部平巷连接段三部分，其中上25部平巷为2.8m、中部斜巷4.327m,下部平巷为长度为4.9m，中部斜巷长度为4.327m，坡度为25°，与回风斜井连接段长度为3m（具体布置见风硐平、剖面图）。第二节地质水文情况风硐全长总体布置在一段风化基岩当中，施工时风硐主要穿过的岩层为砂质泥岩，该岩层呈灰至灰绿色、弱度风化、遇水软化，硬度中等。回风斜井井筒明槽开挖揭露该段岩层时未遇见任何涌水现象，预计安全出口在开挖施工时不会出现涌水。第二章巷道支护第一节风硐断面设计

7、及支护一、风硐断面设计安全出口设计采用混凝土支护；碹体下部通长设置混凝土垫层；安全出口内通长设有混凝土铺底、中部斜巷段沿风硐下行方向右帮设有现浇混凝土台阶和扶手；安全出口露出地表部分设置散水；安全出口表面采用防水砂浆处理；二、断面规格及支护参数风硐主体净断面为4.4㎡，混凝土砌筑厚度为250mm，混凝土强度为C30；风硐下部素混凝土垫层厚度为250mm、强度为C20浇筑，伸出碹体长度为200mm。台阶采用现浇C20素混凝土浇筑。风硐内25°上山段设台阶、扶手；台阶300×175×4025mm,扶手的高度为

8、800mm。第三章施工方法第一节施工方案根据本工程特点为加快施工进度和保证施工安全，安全出口施工采用大揭盖施工方法，施工时先进行明槽开挖施工，在进行主体混凝土支护后，最后二次回填的施工方案。第二节明槽开挖施工明槽开挖设计长度为11.627m，坡度比为1：0.5、明槽底部宽度为3.7m。明槽开挖采用钻爆法破岩、W-50型挖掘进开挖，10.5吨自卸汽车排土；人工整修边坡，锚喷稳固边坡的施工方法。一、爆破施工明槽全高分三个段高层爆破