CAJ | 학술논문

文章主要通过室内石膏块模型试验对节理间距为0.5 m的隧道围岩在节理倾角分别为0°，30°，45°，60°和90°时无支护开挖情况下围岩的塌落拱跨度、高度和塌落面积的探讨，得出了在不同节理倾角下得到的结果，并与普氏理论值进行了对比分析，发现塌落高度、塌落宽度以及塌落面积均与节理倾角呈非线性变化关系，其极小值介于45°～60°之间；同时利用离散元软件UEDC对上述工况进行二维数值分析，室内试验结果与数值分析结果一致；依据数值计算和室内试验综合分析，得到了在不同节理倾角下塌落拱高度的计算方法。
문장주요통과실내석고괴모형시험대절리간거위0.5 m적수도위암재절리경각분별위0°，30°，45°，60°화90°시무지호개알정황하위암적탑락공과도、고도화탑락면적적탐토，득출료재불동절리경각하득도적결과，병여보씨이론치진행료대비분석，발현탑락고도、탑락관도이급탑락면적균여절리경각정비선성변화관계，기겁소치개우45°～60°지간；동시이용리산원연건UEDC대상술공황진행이유수치분석，실내시험결과여수치분석결과일치；의거수치계산화실내시험종합분석，득도료재불동절리경각하탑락공고도적계산방법。
Based on an indoor gypsum model test, this paper discusses the span and height, as well as the area of collapsed arches of surrounding rock with joint spacings of 0.5 m; dip angles of 0° , 30° , 45° , 60° , 90°; and without support. Compared with the values of the Platts theory, there is a nonlinear relationship between the joint dip angle and the collapse height, width, and area, with the minimum values occurring with angles of 45°~60° . The test results are consistent with the calculated ones according to a 2D numerical analysis of the above conditions with UEDC software. Based on a comprehensive analysis of numerical calculations and indoor test results, a calculation method for collapsed arch heights under different joint dip angles is obtained.