动压影响下的大巷锚注加固技术研究及应用

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锚注支护将松散破碎的围岩胶结成了整体,提高了岩体的内聚力、内摩擦角及弹性模量,提高了岩体的自身强度和完整性,增强了支护结构的整体性和承载能力,注浆后的锚杆能够实现全长锚固,使锚杆与围岩形成一个整体,让锚杆对松散破碎岩层的锚固作用得以充分发挥,达到了较好的支护效果。根据锚注支护的理论原理,详细叙述了在某矿巷道加固中采用锚注支护的技术参数,施工工艺和施工技术要求。实际应用结果证明,锚注支护是巷道预加固及修复的有效方法,不仅施工速度快,劳动强度小,而且可大大降低支护成本,取得较好的经济效益,值得推广应用。
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