摘要
Abstract
In view of the typical high stress,broken surrounding rock and composite roof area in the south five belt roadway of Tangshan Mine,there were problems such as fast deformation speed after roadway construction,and the long-term stability of surrounding rock could not be realized by conventional bolting and shotcreting and scaffolding.The measures of theoretical calculation,numerical simulation,field measurement and mine pressure information feedback were adopted to analyze the stress and mine pressure appearance law of dense scaffolding.The new bolt,anchor cable and grouting material were used to modify and strengthen the surrounding rock grouting,and the combined support system of shed bolting and grouting was constructed and related experiments were carried out.The results showed that the shed-anchor-grouting combined support effectively improved the stability and bearing capacity of surrounding rock,further enriched the support method of high-stress complex surrounding rock roadway,and provided reference for the support work of deep roadway.关键词
深井/复杂岩性/支护参数/注浆技术/锚固强化/棚锚注耦合支护Key words
deep mine/complex lithology/support parameters/grouting technology/anchorage reinforcement/shed bolt-grouting combined support分类
矿山工程
