下载后可任意编辑摘要钱家营矿业分公司位于河北省唐山市丰南区钱家营镇, 地理坐标为北 39°33′。本文设计对象为年产 240Mt 矿井的第一水平运输大巷, 服务年限为 75a。本设计主要对钱家营煤矿运输大巷进行断面设计, 其中主要设计内容包括: 开挖断面结构设计、 锚杆参数、 炮眼参数和爆破参数的确定, 施工组织设计与工程概算的计算。在设计过程中得到的主要结论包括: 断面采纳半圆拱结构, 掘进宽度为 4640mm, 掘进高度为 3840mm。采纳锚喷网支护, 选用树脂锚杆, 杆体为 Ф18mm 螺纹钢, 每孔安装两个树脂药卷, 锚杆长度 2.0m。选择混凝土标号为 C20, 喷射混凝土层厚度 T1=120mm。钢筋网由钢筋焊接而成钢筋直径 Ф 为 6mm, 网格为 120mm 120mm。采纳全断面开挖, 施工方案采纳钻爆法施工, 炮眼共 65 个, 炮眼深度为 1.9m, 周边眼直径 Ф 为 32mm, 其它 Ф 为36mm。采纳气腿凿岩机和耙斗装岩机的机械化作业线, 作业方式为掘支平行作业, 采纳三班工作制, 一天三个循环, 每一循环进尺为 1.9m,故月进度可达到 57m 左右。关键词: 运输大巷; 结构; 锚喷网; 钻爆; 施工组织AbstractQianjiaying Mining Company located in Tangshan City, Hebei Province, Qian Ying Town Fengnan area, geographic coordinates for the North 39 ° 33 '. This object is designed annual output of the first level of 240Mt coal mine roadway transportation, length of service as 75a. The design mainly Qianjiaying roadway for coal transport section design, in which the main design elements include: excavation cross-section design, bolt parameters, borehole parameters and the determination of blasting parameters, construction design and engineering budget calculations. In the design of the main conclusions obtained in the course include: cross-section semi-arched structure, excavation width of 4640mm, excavation height of 3840mm. Net support with shotcrete, the choice of resin bolt, screw rod is Ф18mm, each installation of two resin Cartridge hole, bolt length 2.0m. Selected for the concrete grade C20, the...
