基于ABAQUS的气动潜孔锤球齿碎岩及布齿优化
Pneumatic DTH hammer tooth crushing and optimization of teeth arrangement based on ABAQUS
杨秋明 1周兢 2王瑜 1夏柏如 1吴浩3
作者信息
- 1. 中国地质大学(北京),北京 100083;自然资源部深部地质钻探技术重点实验室,北京 100083
- 2. 中国地质大学(北京),北京 100083;中国煤炭地质总局,北京 100038
- 3. 中煤地第二勘探局集团有限责任公司,河北 涿州 072750
- 折叠
摘要
为提高坚硬地层大直径潜孔锤的破岩效率与使用寿命,运用ABAQUS软件建立了球齿碎岩仿真模型,对比分析Ø18 mm球齿在不同钻进参数下冲击切削碎岩过程中的破碎比功、侵入深度、破碎范围与应力影响范围等曲线,优选钻进参数和布齿.分析结果表明:当钻压为1.2 kN、冲击功为30 J时,对岩石的破碎效率较高,球齿入岩的位移可达0.67 mm,并对岩石进行应力界限划分,得出应力影响范围为43.4 mm;通过双齿冲击切削模拟确定了较为优秀的圈距与间距:圈距取47.4 mm,间距取43.4～51.4 mm;考虑到球齿的磨损,利用圈距与间距对Ø711 mm大直径潜孔锤进行了优化布齿.
Abstract
In order to improve the rock breaking efficiency and service life of the large diameter drill hammer in hard formation,ABAQUS software was used to establish the simulation model of rock breaking with spherical teeth.The curves of crushing specific work,invasion depth,crushing range and stress influence range of φ18mm spherical teeth in the process of impact cutting rock breaking under different drilling parameters were compared and analyzed,and the drilling parameters and tooth layout were optimized.The analysis results show that when the weight on bit is 1.2kN and the impact energy is 30J,the crushing efficiency of the rock is higher,the displacement of the spherical teeth into the rock can reach 0.67mm,and the stress limit of the rock is divided,and the influence range of the stress is 43.4mm.Through the simulation of double-tooth impact cutting,the better ring distance and spacing were determined:the ring distance was 47.4mm,and the spacing was 43.4～51.4mm.Considering the wear of the spherical teeth,using the ring distance and spacing,the teeth of the 711mm large-diameter drill hammer were optimized.
关键词
气动潜孔锤/球齿/钻进参数/布齿/应力影响范围/坚硬地层/岩石破碎/ABAQUSKey words
pneumatic DTH hammer/spherical teeth/drilling parameters/teeth arrangement/stress influence range/extra-hard formation/rock fragmentation/ABAQUS引用本文复制引用
基金项目
贵州省科技计划([2023]一般422)
中国煤炭地质总局科技创新项目(ZMKJ-2021-ZX05)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据