竖井掘进机不同工作状态下装备与围岩振动响应特征分析  

Vibration characteristics of equipment and surrounding rock of shaft excavation using a shaft boring machine under different working conditions

作　　者：陈拓[1] 李亭[1] 王建州[1] 肖威 陈康 CHEN Tuo;LI Ting;WANG Jianzhou;XIAO Wei;CHEN Kang(The State Key Laboratory for GeoMechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;China Railway Engineering Equipment Group Co Ltd,Zhengzhou,Henan 450016,China)

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116 [2]中铁工程装备集团有限公司,河南郑州450016

出　　处：《采矿与安全工程学报》2023年第1期128-134,共7页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(41701058)。

摘　　要：随着地下空间开发利用朝机械化、自动化和智能化方向发展,竖井掘进机为千米级竖井全断面掘进无人化(少人化)技术难题提供解决思路。针对竖井掘进过程中振动影响问题,以采用全断面竖井掘进机进行开挖的宁海抽水蓄能电站风井工程为依托,应用强震动测试的手段,对竖井掘进过程中的振动响应进行了测量和分析。测试结果表明:在竖井掘进振动影响下,围岩空帮段的振动明显,在实际工程中应考虑对软弱风化空帮段围岩体进行支护。随着振动向上传递,振动加速度幅值出现明显的非线性衰减特征,在上撑靴位置径向振动最大为150 cm/s^(2),振动衰减率为87%左右。With the development and utilization of underground space resources towards mechanization,automation and intelligence,the construction method of full-section shaft boring machine provided solutions to the technical problems of thousand-meter deep shaft excavation.Aiming at the problem of vibration influence during shaft excavation,the strong motion observation method was used in Ninghai shaft project to assess and analyze the vibration response during shaft excavation.To meet requirements for rapid shaft construction,a shaft boring machine(SBM)was launched in this shaft construction.The test results showed that the vibration of the surrounding rock was obvious under the influence of the vibration of SBM shaft excavation.Thus,the segment with supported clearance should be concerned.With the upward transmission of vibration,the vibration amplitude had obvious nonlinear attenuation characteristics.The vibration amplitude of the gripper shoe in radial direction was 150 cm/s^(2),with an attenuation rate of 87%.

关 键 词：竖井掘进机 振动响应 强震动 衰减特性 

分 类 号：TD415[矿业工程—矿山机电]