在涌水量大的破碎岩体中施工斜井的技术措施

Technical Measures of Sinking Inclined Shaft inBroken Rock-body with Large Flow of Water

马钢南山铁矿凹山采场排水斜井的延伸工程涌水量大、岩体破碎、地质条件复杂。在施工斜井中采用了强化排水、强化临时支护、处理悬顶和光面爆破等工程技术措施，确保工程的施工质量和进度，平均掘进速度由６．５０ｍ／月提高到１２．４３ｍ／月，取得了较好的效果。

The extended engineering of a inclined shaft to be use for drainage,which is located atAoshan Mining District of Nanshan Iron Mine,Maanshan Iron and Steel Company,is sinked in the stratum of larse now of water,broken rock-body and complicated geological condition. In the process of construction, the technical measures such as strengthening drainage, strengthening temporary support,treating hanging-up roof and smooth blasting etc. are used. The quality and progress of whole engineeingis ensured,the average sinking speed is increased from 6. 50m to 12. 5m per month.