A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Roadway grouting reinforcement method under dynamic load impact
The invention provides a roadway grouting reinforcement method under dynamic load impact. The roadway grouting reinforcement method comprises the steps that roadway near-field surrounding rock is divided into an anchoring area and an anchoring outer area according to the breaking degree; and the anchoring area is grouted by adopting an elastic grouting material and/or an elastic and tough groutingmaterial through a partition independent grouting method or a same-hole step-by-step grouting method, and the anchoring outer area is grouted by adopting a foaming grouting material. According to theroadway grouting reinforcement method, grouting materials capable of reducing impact, absorbing energy and coordinating deformation with surrounding rock are adopted, grouting reinforcement is carried out according to the characteristics of the surrounding rock in different areas, the integrity of the surrounding rock can be kept, the self-bearing capacity of the surrounding rock is improved, deformation and energy absorption can be generated under the action of impact loads, coordinating deformation with the surrounding rock is achieved, bonding with a discontinuous surface is kept, continuous damage of impact to the integrity of the surrounding rock is reduced, the impact reduction and energy absorption characteristics of the surrounding rock are improved, the damage degree of the surrounding rock of the rock burst roadway is greatly reduced, and the catastrophe resistance under high-energy impact is improved.
本发明提供一种受动载荷冲击巷道注浆加固方法，包括：将巷道近场围岩根据破碎程度划分为锚固区域和锚固外区域；通过分区独立注浆法或同孔分步注浆法，采用弹性注浆材料和/或弹韧性注浆材料对所述锚固区域进行注浆，采用发泡类注浆材料对所述锚固外区域进行注浆。本发明采用可减冲吸能并能与围岩协调变形的注浆材料，并根据不同区域围岩特点进行注浆加固，不但可以保持围岩的完整性、提高围岩自承能力，还可在冲击载荷作用下产生变形、吸能，并与围岩协调变形、保持与不连续面的黏结，减少冲击对围岩完整性的持续破坏，并增加围岩的减冲吸能特性，大幅降低冲击地压巷道围岩的破坏程度，提高抵抗高能量冲击下灾变的能力。
Roadway grouting reinforcement method under dynamic load impact
The invention provides a roadway grouting reinforcement method under dynamic load impact. The roadway grouting reinforcement method comprises the steps that roadway near-field surrounding rock is divided into an anchoring area and an anchoring outer area according to the breaking degree; and the anchoring area is grouted by adopting an elastic grouting material and/or an elastic and tough groutingmaterial through a partition independent grouting method or a same-hole step-by-step grouting method, and the anchoring outer area is grouted by adopting a foaming grouting material. According to theroadway grouting reinforcement method, grouting materials capable of reducing impact, absorbing energy and coordinating deformation with surrounding rock are adopted, grouting reinforcement is carried out according to the characteristics of the surrounding rock in different areas, the integrity of the surrounding rock can be kept, the self-bearing capacity of the surrounding rock is improved, deformation and energy absorption can be generated under the action of impact loads, coordinating deformation with the surrounding rock is achieved, bonding with a discontinuous surface is kept, continuous damage of impact to the integrity of the surrounding rock is reduced, the impact reduction and energy absorption characteristics of the surrounding rock are improved, the damage degree of the surrounding rock of the rock burst roadway is greatly reduced, and the catastrophe resistance under high-energy impact is improved.
本发明提供一种受动载荷冲击巷道注浆加固方法，包括：将巷道近场围岩根据破碎程度划分为锚固区域和锚固外区域；通过分区独立注浆法或同孔分步注浆法，采用弹性注浆材料和/或弹韧性注浆材料对所述锚固区域进行注浆，采用发泡类注浆材料对所述锚固外区域进行注浆。本发明采用可减冲吸能并能与围岩协调变形的注浆材料，并根据不同区域围岩特点进行注浆加固，不但可以保持围岩的完整性、提高围岩自承能力，还可在冲击载荷作用下产生变形、吸能，并与围岩协调变形、保持与不连续面的黏结，减少冲击对围岩完整性的持续破坏，并增加围岩的减冲吸能特性，大幅降低冲击地压巷道围岩的破坏程度，提高抵抗高能量冲击下灾变的能力。
Roadway grouting reinforcement method under dynamic load impact
受动载荷冲击巷道注浆加固方法
CHU XIAOWEI (author) / WU YONGZHENG (author) / FU YUKAI (author) / LI WENZHOU (author) / ZHANG ZHEN (author) / WU ZHIGANG (author) / SHI MENG (author) / WANG TAO (author) / SUN ZHIYONG (author) / LIU CHENGBO (author)
2021-03-26
Patent
Electronic Resource
Chinese
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