相似模拟实验中锚杆测力计的研制与应用  

Development and Application of Anchor Dynamometer in Similar Simulation Experiment

作　　者：伍永平[1] 王俊超[1,2] 解盘石[1] 张艳丽[1] 任世广[1] 高喜才[1] 

机构地区：[1]西安科技大学能源学院,教育部西部矿井开采及灾害防治重点实验室,陕西西安710054 [2]四川广旺船景煤业有限责任公司,四川宜宾625250

出　　处：《采矿与安全工程学报》2012年第3期371-375,共5页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51074120);陕西省教育厅重点实验室项目(08JZ01;08JZ02)

摘　　要：为了更好地对巷道各部位锚杆受力状态进行实时观测,利用巷道相似材料模型可对巷道围岩变形破坏机理进行分析。采用LY-12硬铝合金作为弹性体材料设计了一种新型测力传感器,为确定巷道合理支护参数提供了科学依据。在对比分析目前锚杆测力计不足之处的基础上,运用材料力学理论确定了全桥环状锚杆测力计无孔状态下的尺寸,并运用FLAC3D数值模拟软件建立数值计算模型,对比分析锚杆测力计有孔与无孔状态下的应力分布。同时实验室标定与应用也表明新型测力计在结构尺寸、稳定性、精度等方面均能达到相似材料模拟实验要求,它为实验中锚杆测力提供了一种有效的观测手段,具有广泛的应用前景。To make better real-time observation on the anchor＇s stress in different positions of roadway,the roadway similar material model can be used to analyze the deformation and failure mechanism of surrounding rock,and provide scientific basis to determine reasonable support parameters of roadway.In this paper,a new type of stress sensor was designed by using LY-12 duralumin alloy as elastic mate-rial.By contrast analysis of disadvantages of present anchor dynamometers,the sizes of whole-bridge ring anchor dynamometer in no-hole status was determined by using material mechanics theory.In addi-tion,the stress distributions of anchor dynamometer in the statuses of no-hole and with a hole were con-trast analyzed through the numerical calculation model built by FLAC3D.The experiment calibration and application results show that the structure size,stability and accuracy,et al of the new dynamometer are all appropriate for the requirements of similar material simulation experiment,which can provide an impactful means for testing anchor stress in similar material simulation experiment,and has wide pros-pect of application.

关 键 词：相似材料模型 围岩变形破坏机理 全桥环状锚杆测力计 FLAC3D数值模拟 

分 类 号：TD353[矿业工程—矿井建设]