摘要
为了研究在动静载作用下预应力注浆锚索治理巷道中底锚索的动态响应,本文以常村煤矿S61#为研究对象,采用FLAC数值软件进行模拟分析得:在动载作用下,预应力注浆锚索的前3段轴向应力比较大,受到动力扰动的影响比较深,最大减小幅度能达到18.4%,底臌治理前应考虑底锚索前3段的轴向应力;由于在巷道底板采用了注浆的治理方法,所以底锚索的第1段水泥浆应力为零,且不受动力扰动的影响;在动载作用下,底锚索的第2段与第3段水泥浆应力呈拉压应力交替出现形式,后4段对应的水泥浆应力始终为拉应力。
In order to study dynamic response of bottom anchor of treatment of roadway with prestressed grouting anchor cable under the action of static and dynamic, in the paper FLAC 3D numerical simulation are employed to study S61# as the research object. Results show that the axial stress of the first three sections of prestressed anchor cable is relatively large under the action of dynamic load, and the influence of dynamic disturbance is relatively deep , and the maximum reduction can reach 18.4%, and axial stress of the three section of the bottom anchor should be considered before floor heave treatment. Because grouting in roadway floor is adopted, the grout stress of first section of anchor cable is zero without the influence of dynamic disturbance. Under the action of dynamic load, the grout stress of second and third bottom cable is tension and compression alternating, and the grout stress of latter four sections of bottom cable is always tensile stress.
作者
金亮
裴晨浩
JIN Liang(Henan Polytechnic University, Jiaozuo 454000, Chin)
出处
《洛阳理工学院学报（自然科学版）》
2017年第3期28-32,共5页
Journal of Luoyang Institute of Science and Technology：Natural Science Edition
基金
河南省高等学校青年骨干教师资助计划项目(2015GGJS-069)
关键词
巷道工程
动静载
预应力注浆锚索
动态响应
数值模拟
roadway engineering
dynamic and static load
borehole pressure relief
dynamic response
numerical simulation
