竖井半面阶梯交替掘进施工技术研究  

Study of Construction Technology of Half-section Step Alternately Driving in Shaft

作　　者：翟会超[1,2] 闫满志[1,2] 刘万富 

机构地区：[1]河北钢铁集团有限公司博士后科研工作站,石家庄050000 [2]河北钢铁集团矿业有限公司田兴铁矿,唐山063000

出　　处：《爆破》2014年第1期79-81,共3页Blasting

摘　　要：为保证涌水环境下井筒掘进施工的继续,研究采用半面阶梯交替掘井技术进行施工.该技术将工作面划分为两个对称的半圆,在半圆内布置掏槽孔、辅助孔、周边孔,周边孔密集系数控制在0.6 ～0.8,外倾1°.使用手风锤打浅孔,孔深2.5m,交替阶梯高差控制在1 m左右,利用较低半圆作为储水平台,为凿岩爆破工作平台提供良好的工作环境.应用结果表明：该法具有操作灵活性大、较底半面储水等优点,适用于地下水较大且机械化设备利用率低的井筒施工.In order to ensure the continuous construction of shaft excavation in water environment, the construc- tion technology of half-section step alternately excavation was studied, which divides the working face into two sym- metrical semicircle. The blast hole was drilled by YT-28 and 1 degrees outward tilt and 2.5 meters deep;the inten- sive coefficient of contour hole was 0.6 - 0.8. The difference of alternating step height was controlled about 1 meter and the lower semicircle was used as water storage platform providing good working environment for drilling and blas- ting process. Results show that this method was highly flexible and suitable for shaft construction condition with groundwater and low equipment utilization.

关 键 词：竖井掘进 爆破参数设计 井筒排水 

分 类 号：TD235.3[矿业工程—矿井建设]