CAJ | 학술논문

力学性能好、经济效益佳的钢管混凝土支架已经成为一种新型巷道支护材料，但是在使用过程中有时会出现注浆孔附近管壁开裂的问题，严重削弱其支护性能。运用数值模拟的方法对已出现注浆孔开裂的钢管混凝土支架进行了结构分析。结果表明，注浆孔附近管壁开裂的主要原因是孔边的应力集中。同时，根据数值计算的结果提出了首选的开孔位置，从而从根本上降低了注浆孔开裂的概率，保证了支架的支护稳定性。此分析方法具有很好的适用性，在辛置矿上的应用效果也证明了此分析方法的合理性。
역학성능호、경제효익가적강관혼응토지가이경성위일충신형항도지호재료，단시재사용과정중유시회출현주장공부근관벽개렬적문제，엄중삭약기지호성능。운용수치모의적방법대이출현주장공개렬적강관혼응토지가진행료결구분석。결과표명，주장공부근관벽개렬적주요원인시공변적응력집중。동시，근거수치계산적결과제출료수선적개공위치，종이종근본상강저료주장공개렬적개솔，보증료지가적지호은정성。차분석방법구유흔호적괄용성，재신치광상적응용효과야증명료차분석방법적합이성。
Concrete-filled steel tubular stent which owns good mechanical properties and good economic benefit has been a new the roadway supporting materials.However,grouting hole cracked in some use,weakening the support performance seriously. Numerical simulation is applied to analyze the structure of the stent that has cracked,finding cracking is mainly due to stress concentration of the hole edge,and determining the preferred position of grouting hole,it can reduce the probability of cracking on grouting holes radically, ensuring the stability of concrete-filled steel tubular stent, and the analysis has general applicability,the application of Xinzhi further demonstrates the rationality of this method.