School of Mechanical Engineering,Liaoning Technical University,Fuxin　 123000,China

针对大型综掘巷道超前支架体积大,不易于在实验室中对其进行全面动力学特性以及其与围岩耦合力学特性的实验研究等问题,根据相似理论,建立缩比为1∶8的相似实验模型样机。并建立了模拟巷道顶板的实验平台和测量基准框架。对超前支架和顶板耦合系统进行力学实验,测量在无支护和有支护,静态加载和动态加载情况下,顶板和支架顶梁的变形和受力情况。最后对模型样机进行模态实验分析,测得两者前6阶的固有频率以及各阶的模态阵型。通过基于相似理论搭建的实验样机和实验平台能够实现在条件有限的实验室条件下对超前支架进行静、动力学实验和测试,有助于节约设备研发成本以及提高设备质量。

The size of advance support for mechanized mining roadway is large,therefore it is not easy to investigate its comprehensive dynamic characteristics and its coupled mechanical characteristics with surrounding rock in laboratory. According to the similarity theory,the similar experimental prototype of the support with a shrinkage ratio of 1 ∶ 8 was built. And a platform and measurement reference frame simulation of roadway roof were established. An experimental mechanics test was conducted on the advance support and roof coupling system to measure the deformation of roof and support beam and stress with support and without support,and with static loading and dynamic loading. Finally the ex- perimental modal analysis was conducted on the model prototype,and the first 6 order natural frequency and modal shape of each order were measured. It is good to save equipment development cost and improve the quality of equip- ment through building the prototype and the experimental platform with the limited laboratory conditions for doing stat- ic and dynamic experiments and tests based on the similarity theory.

国家自然科学基金资助项目(51304107)；辽宁省教育厅重点实验室资助项目(LJZS006)；辽宁省煤矿液压技术与装备工程研究中心开放基金资助项目(CMHT-201206)；

Xie Miao,Liu Zhixiang,Lu Jinnan,et al. Development of similar experimental prototype of the advanced support and the experimental study on its coupling mechanics with roof[J]. Journal of China Coal Society,2017,42(5):1319-1324.