爆轰波碰撞聚能技术在红沿河核电厂的应用  

Application of detonation wave collision for energy gathering technology in Hongyanhe nuclear power plant

作　　者：刘广兴[1] 陈新[1] 王敏[1] 郭建 LIU Guang-xing;CHEN Xin;WANG Min;GUO Jian(Dalian Economic and Technological Development Zone Jinyuan Blasting Co.,Ltd.,Dalian 116600,Liaoning,China;School of Science,Qingdao University of Technology,Qingdao 266033,Shandong,China)

机构地区：[1]大连经济技术开发区金源爆破工程有限公司,辽宁大连116600 [2]青岛理工大学理学院,山东青岛266033

出　　处：《工程爆破》2022年第6期80-84,91,共6页Engineering Blasting

摘　　要：为解决盾构过程中遇到的坚硬岩石和局部孤石问题,辽宁红沿河核电厂在取水隧洞施工中引入爆轰波碰撞聚能技术对硬岩和孤石进行预处理。通过数值模拟,直观地揭示出了聚能起爆方式与中心起爆方式在岩石中裂纹扩展的过程。工程实践的结果显示:采用中心起爆时,岩芯最大尺寸为27 cm,且大部分岩芯尺寸在12 cm以上;采用碰撞聚能起爆时,岩芯最大尺寸在18 cm左右,大部分岩芯尺寸在11 cm以内。因此,爆轰波碰撞聚能爆破技术充分利用了炸药爆炸的能量,达到了岩石破碎的目的,成功降低了盾构机刀盘受卡、变形甚至损坏的风险,保证了掘进的安全和效率,在坚硬岩石或有孤石的不均匀地层中有着良好的应用前景。In order to solve the problems of hard rock and isolated boulder in shield tunneling, the detonation wave collision for energy gathering technology was introduced to pretreat hard rock and isolated boulder in the construction of Intake Tunnel of Liaoning Hongyanhe Nuclear Power Plant. Through numerical simulation, the process of crack propagation in rock with shaped charge initiation and central initiation is revealed intuitively. The results of engineering practice show that the maximum size of core is 27 cm and most of core is over 12 cm when central initiation is used, while the maximum size of core is about 18 cm when collision for energy gathering technology is used, most cores are less than 11 cm in size. Therefore, the energy of explosive explosion is fully utilized by the detonation wave collision for energy gathering technology to achieve the goal of rock fragmentation, and the risk of getting stuck, deformation and even damage of the cutter head of tunnel boring machine is successfully reduced, it ensures the safety and efficiency of excavation, and has a good application prospect in hard rock or non-uniform stratum with isolated boulder.

关 键 词：爆轰波 碰撞聚能 数值模拟 盾构 孤石 

分 类 号：TD235[矿业工程—矿井建设]