Chapter 4 analyzed the influence factor of broken rock zone, and studied its changing rule.
第4章分析了洞室开挖后围岩松动圈的影响因素,并研究了其变化规律。
参考来源 - 公路隧道围岩稳定性和单层衬砌力学机理的数值模拟研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The paper has introduced a method of broken rock zone detecting and explaining by seismic technique.
简要介绍了利用地震波进行巷道围岩松动圈测试与解析的原理和方法技术。
Field and lab tests show that interaction between rocks and earth pressure produce different size of broken rock zone;
现场实践和实验室研究表明：地应力与围岩的相互作用会产生大小不同的围岩松动圈；
Based on many years research of broken rock zone the paper describes roadway support theory, classification of rocks in the loose rock zone and mechanism of rock-bolting and shotcreting.
基于多年对围岩松动圈的研究成果，本文提出并论述了松动圈支护理论、松动圈围岩分类方法和锚喷支护机理三个问题。
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