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요약정보
注浆技术在沿空留巷围岩控制中的应用
Resource Type
Academic Journal
Authors
吴胜明
Source
山西能源学院学报 / Journal of Shanxi Coal-Mining Administrators College
. 33(3):12-14
Subject
沿空留巷
围岩注浆
浅层注浆
深孔注浆
注浆材料
Language
Chinese
ISSN
1008-8881
Online Access
Find it @ DONGA
초록
沿空留巷巷道受两次采动动压影响,围岩破碎,采用常规的锚网索支护方式难以控制围岩变形.文章以2905采面沿空留巷巷道围岩控制为工程背景,采用现场实测法分析巷道围岩变形及破坏特征,提出采用注浆加固方式稳定巷道围岩,并对注浆工艺进行优化.采用新型无机注浆加固材料结合优化后的注浆工艺,可以根据围岩破碎及裂隙扩展情况分段选择合适的注浆浆液水灰比及注浆压力,同时不会增加注浆工程量.现场应用表明,对沿空留巷巷道围岩注浆后,顶板下沉量在4d内趋于稳定,下沉量控制在26mm内,顶板离层量最大为2mm,有效控制了沿空留巷巷道围岩变形.
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