CAJ | 학술논문

应用经典塑性力学理论确定的圆形巷道围岩弹塑性应力场存在一些问题，这影响深部圆形巷道的稳定性评价及支护设计的合理性。应用塑性力学求解新体系确定的圆形巷道围岩弹塑性应力场准确解，进行了各向同性均质地层中圆形巷道破损区、地层残余强度与支护压力关系方面的研究，取得了如下成果：（1）破损区随开采深度的增加而增大，它们基本呈线性关系。（2）建立了支护压力与巷道埋深、围岩强度、围岩破坏后残余强度、围岩泊松比和重度之间的关系。研究成果可为支护设计提供重要参考。
응용경전소성역학이론학정적원형항도위암탄소성응력장존재일사문제，저영향심부원형항도적은정성평개급지호설계적합이성。응용소성역학구해신체계학정적원형항도위암탄소성응력장준학해，진행료각향동성균질지층중원형항도파손구、지층잔여강도여지호압력관계방면적연구，취득료여하성과：（1）파손구수개채심도적증가이증대，타문기본정선성관계。（2）건립료지호압력여항도매심、위암강도、위암파배후잔여강도、위암박송비화중도지간적관계。연구성과가위지호설계제공중요삼고。
It is shown that elastoplastic stress field of circular roadway, which is given by the classic plasticity mechanics, is not correct. Therefore, it affects rationality of stability evaluation and support design of circular roadway. Based on the accurate analytic solution obtained by the new solving system of plastic mechanics, failure zone, relationship between stratum residual strength and support pressure of circular roadway are studied in isotropic and homogeneous stratum. The following results are obtained:(1) Failure zone increases as mining depth increase, which is basically a linear relation. (2) Relationship among support pressure, depth of roadway, strength and residual strength of surrounding rock, Poisson's ratio and bulk density is established. These results will be of great help to support design.