高频破碎锤清礁范围适用性分析  

Applicability analysis of high-frequency hammer for reef cleaning range

作　　者：邹永胜 李启佳 王锐 汪江军 冯国星 闵文军 ZOU Yongsheng;LI Qijia;WANG Rui;WANG Jiangjun;FENG Guoxing;MIN Wenjun(Changjiang Chongqing Waterway Engineering Bureau,Chongqing 400010,China;Guangxi Pinglu Canal Construction Co.,Ltd.,Nanning 530200,China;Tianjin Tianke Engineering Management Co.,Ltd.,Tianjin 300456,China)

机构地区：[1]长江重庆航道工程局,重庆400010 [2]广西平陆运河建设有限公司,广西南宁530200 [3]天津天科工程管理有限公司,天津300456

出　　处：《水运工程》2025年第1期205-208,212,共5页Port & Waterway Engineering

摘　　要：在航道工程清礁施工中,如清礁区域内附近存在临近建筑物,则需要考虑施工对临近建筑物的影响。在西部陆海新通道(平陆)运河航道工程建设中,为避免清礁时对既有临近建筑物产生不利影响,工程利用高频破碎锤的循环冲击作用对礁石进行破碎,更加高效、环保。针对高频破碎锤在清礁敏感区域的适用性问题,基于3DEC建立高频破碎锤清礁数值模拟计算模型,开展高频振动冲击下岩体内的动力响应规律研究,提出施工中使用HB3600破碎锤清礁时的适用范围。结果表明,HB3600破碎锤适用于抗压强度30 MPa以内的岩石,超过此范围后破岩效率下降;破碎锤冲击作用下,岩体内部产生的应力随着与锤尖距离的增大而逐渐减小,其中竖向应力在0.95 m范围内影响较大,横向应力在半径0.5 m范围内影响较大。In the reef clearing construction of the channel project,the impact of the construction on the adjacent buildings needs to be considered if there are adjacent buildings near the reef clearing area.To avoid the adverse impact on existing nearby buildings in the Western Land-Sea New Corridor,Pinglu Canal,channel project,the project uses the cyclic impact of a high-frequency breaker to break the rocks,which is more efficient and environmentally friendly.Aiming at the applicability of the high-frequency hammer for reef clearing in sensitive areas,a numerical simulation calculation model of the high-frequency hammer for reef clearing is established based on 3DEC,the dynamic response rules of the rock mass under high-frequency vibration impact are studied,and the range of application of the HB3600 hammer for the reef clearing construction is proposed.The results show that the HB3600 hammer is suitable for rocks with a compressive strength within 30 MPa and the rock-breaking efficiency decreases beyond this range.The stress generated inside the rock mass under the impact of the breaker gradually decreases as the distance from the hammer tip increases,the vertical stress has a greater impact within the range of 0.95 m and the lateral stress has a greater impact within the radius of 0.5 m.

关 键 词：高频破碎锤 清礁敏感区 HB3600破碎锤 3DEC 适用范围 

分 类 号：U615[交通运输工程—船舶及航道工程]