梯度冲击载荷下自移式单元支架动态响应特征研究  

Dynamic response characteristics of self-moving unitized supports under graded impact loading

作　　者：陈勇 武振 王恒志 商和福 CHEN Yong;WU Zhen;WANG Hengzhi;SHANG Hefu(Yankuang Energy Group Co.,Ltd.,Zoucheng 273500,China)

机构地区：[1]兖矿能源集团股份有限公司,山东邹城273500

出　　处：《煤炭工程》2025年第3期126-133,共8页Coal Engineering

摘　　要：液压支架是工作面和超前巷道常用的支护手段,在工作时其顶梁常承受来自顶板的冲击载荷,自身稳定性面临威胁。为确保自移式单元支架在多次动载冲击下的工作安全,以赵楼煤矿5304工作面超前巷道自移式单元支架ZQ2000/22/48A为研究对象展开研究,首先运用SOLID WORKS建立模型,然后借助动力学软件ADAMS模拟在梯度冲击载荷条件下单元支架的动态响应特征,进而研究顶梁和立柱的位移及应力变化规律。研究结果显示:在梯度冲击载荷1000 kN作用下,单立柱最大应力为1850 kN,最大下沉量为100 mm,此时顶梁相对偏移量最大,数值为5.84 mm;随着冲击荷载按200、600和1000 kN梯度依次增大,立柱和顶梁的下沉量、应力和偏移量等参数呈非线性变化,其增量和变化率逐渐增大。该研究成果为液压支架的强度选择和冲击试验分析提供理论依据。Hydraulic supports,widely deployed in longwall faces and advance roadways,are subjected to dynamic impact loads from overlying strata during operation,posing significant risks to structural integrity.We systematically investigated the stability of the ZQ2000/22/48A self-moving unitized support in the No.5304 advance roadway at Zhaolou Coal Mine under graded impact loading.A parametric methodology was developed integrating SOLIDWORKS-based geometric modeling with ADAMS multibody dynamics simulations to quantify displacement and stress evolution in critical components(roof beam and hydraulic legs).Key findings reveal:At peak impact loading of 1000 kN,maximum stress concentration in individual legs reaches 1850 kN,accompanied by 100 mm vertical displacement and 5.84 mm lateral roof beam deflection;as the impact load increases in the order of 200 kN,600 kN and 1000 kN,the parameters such as the subsidence,stress and offset of the column and the top beam show nonlinear changes,and the increment and change rate gradually increase,which provides a theoretical basis for the strength selection and impact test analysis of the hydraulic support.

关 键 词：单元支架 超前巷道 冲击载荷 ADAMS模拟 液压支架强度 

分 类 号：TD353[矿业工程—矿井建设]