超前支护在煤岩断层带的应用分析

在岩巷掘进过程中,由于煤呈层状埋藏,并且存在一定的倾角,掘进过程中经常存在揭、过煤层现象。在穿煤施工过程中,经常遇到断层、破碎带等复杂地质构造条件,煤岩断层带岩石松软破碎、巷道压力大。迎面墙易片帮、顶板易冒落。既影响正常掘进又易发生事故,基于对陈四楼煤矿十五采区行人下山(下平巷)煤岩断层带复杂地质条件分析,提出管缝锚杆与金属网片相结合的超前支护方式。实践表明,该超前支护方案能有效控制片帮、冒顶事故的发生。从而保证安全快速的掘进。

In rock roadway process, because coal was layered buried, and there is a certain angle, there is often exposed during excavation, over seams phenomenon. Over the coal seams in the process, often encountered faults, fracture zones and other complex geological conditions, fault rock soft coal crushing, roadway pressure. Easy oncoming wall spalling, roof caving easily. Affect both normal and accident-prone tunneling, based on a fifteen Chensilou coal mining area pedestrian down （down drift） complex geological conditions of coal rock fault analysis, pipe joints and bolt combination of small mesh way forepoling. Practice shows that the advance support programs can effectively control spalling, roof fall. In order to ensure safe and fast tunneling.