CAJ | 학술논문

分析了深部巷道围岩变形破坏特征主要为围岩变形量大、变形具有持续性和不可控性，提出采用长锚杆支护技术进行深部巷道的支护。数值模拟分析了不同支护系统巷道围岩的塑性区分布，结果表明：深部条件下巷道塑性区范围较大，加大支护强度对塑性区改变较小，普通锚杆锚索支护不再适用；深入研究了长锚杆的围岩控制机理，并说明了其在深部大变形巷道支护中的优越性。现场工业性试验表明，采用长锚杆支护后，围岩控制效果更佳，且帮部长锚杆在扩帮时能够被重新利用，支护效果较好。
분석료심부항도위암변형파배특정주요위위암변형량대、변형구유지속성화불가공성，제출채용장묘간지호기술진행심부항도적지호。수치모의분석료불동지호계통항도위암적소성구분포，결과표명：심부조건하항도소성구범위교대，가대지호강도대소성구개변교소，보통묘간묘색지호불재괄용；심입연구료장묘간적위암공제궤리，병설명료기재심부대변형항도지호중적우월성。현장공업성시험표명，채용장묘간지호후，위암공제효과경가，차방부장묘간재확방시능구피중신이용，지호효과교호。
It was found that large, continuous and uncontrollable deformation was the deformation and damage characteristics of sur-rounding rock of deep roadway.Long anchored bolt supporting technology was put forward for deep roadway.Applying numerical simula-tion to analyzing plastic zone distribution with different supporting systems, results showed that plastic zone range was large under deep condition, improving supporting density only changing less plastic zone range and common anchored bolt and cable supporting was not adaptable.Surrounding rock control mechanism of long anchored bolt was deeply researched and its advantage for deep large-deformation roadway was expounded.Field test showed that surrounding rock effect was excellent after applying long anchored bolt, and long an-chored bolts at two-sides could be reused when expanding rib and supporting effect was good.