摘要
为解决大倾角煤层液压支架设计过程中多维受载特征被忽略、建模过程繁琐、设计周期长等问题,结合大倾角伪俯斜工作面液压支架受载特性,研发大倾角液压支架设计系统。采用运动仿真、强度测试、物理实验等综合研究方法,以ZY5000/15.5/38型大倾角煤层液压支架设计为例,根据大倾角伪俯斜采场液压支架多维受力特征建立力学模型,分析大倾角液压支架的空间受载特性,建立伪俯斜工作面液压支架顶梁、掩护梁力学线性矩阵,利用VB.NET为开发语言结合线性矩阵和SOLIDWORKS二次开发建模软件搭建液压支架设计系统,开发出良好的人机交互用户界面。研究分析表明:该系统生成下的模型液压支架顶梁前端运动轨迹范围48 mm左右,支架顶梁前端运动轨迹曲线满足双扭线特性;模型支架最大应力为146.7 MPa,远小于材料屈服的等效应力,最大变形位移也不超过0.531 mm;研制相似比为1∶5物理模型液压支架工作阻力在38 kN左右,在不同条件下测试支架顶梁、掩护梁受载特性,实验中模型支架的力学数据与系统生成的力学数据基本相符,且实验在初撑、增阻、恒阻及卸压各阶段均满足支架的运动要求及承载特性。研究结果体现了该设计系统下模型液压支架较好的适应性,对丰富大倾角煤层液压支架设计理论和指导液压支架设计生产具有一定的科学和实践意义。
In order to solve the problems of ignoring multi-dimensional load characteristics,cumbersome modeling process and long design cycle in the design process of hydraulic support in steeply dipping angle coal seam,combined with the load characteristics of hydraulic support in large dip angle pseudo-inclined working face,the design system of large dip angle hydraulic support is developed.Based on the comprehensive research methods of motion simulation,strength test and physical experiment,taking the design of ZY5000/15.5/38 hydraulic support for steeply dipping angle coal seam as an example,the mechanical model is established according to the multi-dimensional stress characteristics of hydraulic support in large dip angle pseudo-inclined stope.The spatial load characteristics of large dip angle hydraulic support are analyzed,and the mechanical linear matrix of top beam and shield beam of hydraulic support in pseudo-inclined working face is established.The design system of hydraulic support is built by using VB.NET as the development language combined with linear matrix and SOLIDWORKS secondary development modeling software,and a good human-computer interaction user interface is de-veloped.The research and analysis show that the trajectory range of the front end of the top beam of the model hydraulic support gener-ated by the system is about 48 mm,and the trajectory curve of the front end of the top beam of the support satisfies the characteristics of double torsion line.The maximum stress value of the model support is 146.7 MPa,which is far less than the equivalent stress value of the material yield,and the maximum deformation displacement is not more than 0.531 mm.The working resistance of the physical model hy-draulic support with a similarity ratio of 1:5 is about 38 kN.The loading characteristics of the top beam and the shield beam of the support are tested under different conditions.The mechanical data of the model support in the experiment are basically consistent with the mechan-ical data generated by the system,and the experiment meets the motion requirements and bearing characteristics of the support in the stages of initial support,resistance increase,constant resistance and pressure relief.The research results reflect the good adaptability of the model hydraulic support under the design system,which has certain scientific and practical significance for enriching the design theory of hydraulic support in steeply dipping angle coal seam and guiding the design and production of hydraulic support.
作者
伍永平
胡涛
胡博胜
解盘石
杜玉乾
闫壮壮
王同
刘宝恒
WU Yongping;HU Tao;HU Bosheng;XIE Panshi;DU Yuqian;YAN Zhuangzhuang;WANG Tong;LIU Baoheng(School of Energy Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education,Xi’an University of Science and Technology,Xi’an 710054,China)
出处
《煤炭科学技术》
EI
CAS
CSCD
北大核心
2024年第7期187-198,共12页
Coal Science and Technology
基金
国家自然科学基金资助项目(51634007,52204151)。
关键词
大倾角煤层
液压支架
参数化设计系统
适应性检验
steeply dipping coal seam
hydraulic support
parametric design system
adaptability test
作者简介
伍永平(1962-),男,陕西汉中人,教授,博士生导师,博士。Tel:029-85583143,E-mail:wuyp@xust.edu.cn;通讯作者:胡涛(2000-),男,陕西商洛人,硕士研究生。E-mail:1790245937@qq.com。
