The mechanism of roadway rockburst and the law of disaster-causing incubation in syncline structure areas induced by hard roof
WANG Shengchuan
ZHENG Qingxue
LIU Jianzhuang
LI Ke
YAN Guangyou
LI Yingqian
ZHAO Xiaofan
Abstract：In response to the frequent occurrence of impact-induced ground pressure in the conditions of syn-cline structures and hard roof,the static stress distribution characteristics of the surrounding rock of the roadway in the syncline structure area were studied through theoretical analysis and numerical simulation meth-ods.The influence of mechanical property factors on stress evolution was analyzed,and the formation and dis-aster-causing laws of impact in the roadway of the syncline structure induced by the hard roof were revealed.The research results show that the horizontal stress concentration degree of the surrounding rock in the syncline structure area is high.The dynamic load released by the fracture of the hard roof,when superimposed,exceeds the critical stress and easily leads to the manifestation of the "high static load and weak disturbance" type of rock burst.When mining in the axis of the syncline,the closer to the axis,the higher the stress peak,and the stress concentration degree of the inclined mining near the syncline axis is higher than that of the inclined min-ing away from the syncline axis.The greater the thickness and hardness of the roof and the greater the curva-ture of the syncline,the higher the stress concentration degree of the surrounding rock.The roof properties have a small influence on the change of the location of the advanced peak stress,while the increase of the syn-cline curvature makes the stress peak position closer to the working face and the stress more concentrated.
Keywords：roadway rock burstsyncline structurehard roofmain control factors
Publication Date：2026-02-28
Online Publishing Date：2026-03-12(First online date of this platform, not the publication date of the document)
Pages：8( 139-146 )