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分析锚杆支护失效的原因,发现其根本原因是锚杆的有效使用长度问题。合理确定锚杆的长度,减少锚杆外露长度是保证锚杆支护效果的关键因素。
Analysis of the reasons for the failure of bolt support and found that the root cause is the effective length of the bolt. Reasonable to determine the length of the bolt to reduce the exposed length of the bolt is to ensure the effect of bolt support the key factor.