梁家煤矿铁-木组合托盘锚杆支护性能模拟研究  

Simulation Study on Supporting Performance of Iron-Wood Composite Tray Bolt in Liangjia Coal Mine

作　　者：周景奎 颉泽琦 董华旭 祝伟豪 邹玉龙[1] ZHOU Jingkui;JIE Zeqi;DONG Huaxu;ZHU Weihao;ZOU Yulong(Liangjia Coal Mine,Longkou Coal and Electricity Co.,Ltd.,Longkou 265700,China;College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]龙口煤电有限公司梁家煤矿,山东龙口265700 [2]山东科技大学能源与矿业工程学院,山东青岛266590

出　　处：《煤炭技术》2023年第8期65-70,共6页Coal Technology

基　　金：山东省自然科学基金项目(ZR2018BEE001)。

摘　　要：针对三软煤层矿井开采中巷道围岩大变形、支护失效等问题,以梁家煤矿1610工作面运输巷为背景,采用ANSYS数值模拟软件建立铁-木组合托盘锚杆模型,研究铁-木组合托盘锚杆支护性能,揭示铁-木组合托盘锚杆支护机理。结果表明:与普通锚杆支护相比,铁-木组合托盘锚杆支护条件下铁托盘、锚杆、巷道围岩应力分别降低了30%、15%、37%;变形减小了34%、26%、49%。铁-木组合托盘锚杆在铁托盘与围岩之间增加了木托盘,巷道围岩变形时,铁托盘挤压木托盘使木托盘承载一定的变形,木托盘拥有了让压属性,同时木托盘增大了托盘与围岩接触面积,提高接触面围岩整体刚度,增强围岩承载能力,降低锚杆载荷,改善锚杆支护效果。模拟结果得到了梁家煤矿1610工作面运输巷实测数据的验证。Aiming at large deformation of surrounding rock and failure of support in mining of three soft coal seams,taking the 1610 haulage roadway in Liangjia coal mine as the background,the model of iron-wood composite tray bolt was established by using ANSYS numerical simulation software to study the supporting performance of iron-wood composite pallet bolt and reveal the supporting mechanism of iron-wood composite tray bolt.The results show that:compared with ordinary bolt support,the stress of iron tray,bolt and surrounding rock of roadway is reduced by 30%,15% and 37%respectively under the condition of iron-wood composite tray bolt support.Deformation was reduced by 34%,26%,49%.The iron-wood composite tray bolt adds a wooden tray between the iron tray and the surrounding rock,When the surrounding rock of roadway is deformed,the wooden tray is extruded by the iron tray to make the wooden tray bear certain deformation,and the wooden tray has the property of yielding.At the same time,the wooden tray increases the contact area between the tray and the surrounding rock,improves the overall stiffness of the surrounding rock on the contact surface,enhances the bearing capacity of the surrounding rock,reduces the load of the bolt,and improves the supporting effect of the bolt.The research verifies the measured data in 1610 working face of Liangjia coal mine.

关 键 词：三软煤层 锚杆支护 铁-木组合托盘 支护性能 ANSYS 

分 类 号：TD353[矿业工程—矿井建设]