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Coal mine rock burst prevention tunneling method based on fault confined water-rich freezing method
The invention discloses a coal mine rock burst prevention tunneling method based on a fault rich confined water freezing method, which comprises an advanced geological exploration stage and a freezing drilling step-by-step construction stage, the advanced geological exploration stage comprises detection of fault characters and high confined water occurrence conditions and a freezing drilling step-by-step construction stage, and the freezing drilling step-by-step construction stage comprises a freezing drilling step-by-step construction stage and a freezing drilling step-by-step construction stage. A pipeline is connected to a freezing construction drill hole, rich confined water around a fault fracture zone is frozen through low temperature, freezing areas on the two sides of a fault exceed the two wings of the fault fracture zone by 25 m or above, after freezing is completed, a tunnel face is tunneled, meanwhile, freezing temperature monitoring is conducted on the freezing construction drill hole, the freezing effect is maintained, and after tunneling penetrates through the fault fracture zone by 50-70 m, the tunnel face is tunneled; and stopping freezing, and naturally thawing and unfreezing. And the rock burst risk faced by coal mine roadway tunneling in the water-rich near-fault geology is well solved. The method is good in waterproof performance, high in adaptability to strata and convenient to construct, and meanwhile the problem of fault water gushing in the roadway tunneling period can be solved easily.
本发明公开了一种基于断层富承压水冻结法的煤矿防冲击地压掘进方法，包括超前地质勘探阶段和冻结钻孔分步施工阶段，超前地质勘探阶段，包括对断层性状和高承压水赋存条件的探测，冻结钻孔分步施工阶段，将管路连接至冻结施工钻孔，利用低温对断层破碎带周围富承压水进行冻结，断层两侧冻结区域超过断层破碎带两翼25m以上，冻结完成后，掌子面掘进，同时对冻结施工钻孔进行冻结温度监测并维持冷冻效果，掘进穿过断层破碎带50‑70m后，停止冻结，让其自然融化解冻。很好地解决富水近断层地质中煤矿巷道掘进所面临的冲击地压风险。该方法隔水性能较好，对地层的适应能力较强，施工方便，同时有利于解决巷道掘进期间的断层突涌水问题。
Coal mine rock burst prevention tunneling method based on fault confined water-rich freezing method
The invention discloses a coal mine rock burst prevention tunneling method based on a fault rich confined water freezing method, which comprises an advanced geological exploration stage and a freezing drilling step-by-step construction stage, the advanced geological exploration stage comprises detection of fault characters and high confined water occurrence conditions and a freezing drilling step-by-step construction stage, and the freezing drilling step-by-step construction stage comprises a freezing drilling step-by-step construction stage and a freezing drilling step-by-step construction stage. A pipeline is connected to a freezing construction drill hole, rich confined water around a fault fracture zone is frozen through low temperature, freezing areas on the two sides of a fault exceed the two wings of the fault fracture zone by 25 m or above, after freezing is completed, a tunnel face is tunneled, meanwhile, freezing temperature monitoring is conducted on the freezing construction drill hole, the freezing effect is maintained, and after tunneling penetrates through the fault fracture zone by 50-70 m, the tunnel face is tunneled; and stopping freezing, and naturally thawing and unfreezing. And the rock burst risk faced by coal mine roadway tunneling in the water-rich near-fault geology is well solved. The method is good in waterproof performance, high in adaptability to strata and convenient to construct, and meanwhile the problem of fault water gushing in the roadway tunneling period can be solved easily.
本发明公开了一种基于断层富承压水冻结法的煤矿防冲击地压掘进方法，包括超前地质勘探阶段和冻结钻孔分步施工阶段，超前地质勘探阶段，包括对断层性状和高承压水赋存条件的探测，冻结钻孔分步施工阶段，将管路连接至冻结施工钻孔，利用低温对断层破碎带周围富承压水进行冻结，断层两侧冻结区域超过断层破碎带两翼25m以上，冻结完成后，掌子面掘进，同时对冻结施工钻孔进行冻结温度监测并维持冷冻效果，掘进穿过断层破碎带50‑70m后，停止冻结，让其自然融化解冻。很好地解决富水近断层地质中煤矿巷道掘进所面临的冲击地压风险。该方法隔水性能较好，对地层的适应能力较强，施工方便，同时有利于解决巷道掘进期间的断层突涌水问题。
Coal mine rock burst prevention tunneling method based on fault confined water-rich freezing method
一种基于断层富承压水冻结法的煤矿防冲击地压掘进方法
FENG XIAOJUN (author) / WANG DONGMING (author) / LEE DUK-HAENG (author) / LIU QUANLIN (author) / WANG YONG (author) / DENG CHUAN (author) / DING ZENG (author) / HU QINJING (author) / ZHAO XUE (author)
2022-05-06
Patent
Electronic Resource
Chinese
Rock burst in coal bed 620 in L mine
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