Finite element analysis on deformation mechanism of soils under percussion-compact
-
摘要: 潜孔锤冲击挤密钻进过程中土体变形机理的分析是非常复杂的,既涉及到材料非线性、几何非线性,又涉及到界面接触摩擦,属于高度非线性问题。利用有限元分析软件ANSYS初步建立了潜孔锤在土中冲击挤密钻进的有限元模型,模拟分析了钻具周围土体的应力、应变位移情况。结果表明,冲击钻进过程中钻头下方土体随压力的不断增大而发生塑性流动,产生急剧变形而破坏。钻具周围的土被重塑和扰动,土的工程性质发生了较大的变化,孔壁周围比较密实稳定。Abstract: The analysis on deformation mechanism of soils is very complicated in the DTH percussion-compact drilling process,which is not only involved in the problem of material nonlinear and geometrical nonlinear,but also involved in the problem of contact friction.Therefore,it is the high nonlinear problem.The finite element model is preliminarily established by ANSYS in the process of DTH percussion-compact drilling in soil,the stress and strain displacement status of the soil around the drilling tool was simulated and analyzed.The results show that the plastic flow is generated following the increasing pressure in the soils under bit,sharp deformation and failure are also generated.The soils around drilling tool are rebuilt and disturbed.Therefore,the engineering properties of soil vary greatly and the soils around hole wall are relatively compacted and stable.
-
Keywords:
- percussion-compact /
- finite element /
- ANSYS /
- soil deformation
-
-
期刊类型引用(8)
1. 尹会永，冯庆富，董方营，周威，李永杰，王印. 地垒构造近距离双煤层开采断层导水规律研究. 煤矿安全. 2025(03): 197-206 . 
百度学术
2. 王方田，孙暖，张村，郭中权，窦凤金. 矿井采空区水库水岩作用净水机理研究进展及展望. 绿色矿山. 2024(03): 246-257 . 百度学术
3. 杨月堂. 煤矿顶部隔水性能多尺度评价. 能源与环保. 2023(02): 268-274 . 百度学术
4. 姜春露，黄文迪，傅先杰，郑刘根，程世贵，单崇磊. 淮南阜东矿区二叠系砂岩高盐地下水低硫酸盐特征及成因机制. 煤田地质与勘探. 2023(11): 74-82 . 本站查看
5. 尹会永，郎宁，周鑫龙，曹始友，王鹏，徐国梁. 基于断层封闭性与数值模拟的断层导水性综合评价. 煤矿安全. 2022(03): 200-207 . 百度学术
6. 王真真. 柳林矿区聚财塔断层导水性研究. 华北自然资源. 2021(03): 47-48 . 百度学术
7. 杨婷婷，许光泉，ANESU Mabaire. 淮南潘谢矿区岩溶水化学特征及其形成机制研究. 地球与环境. 2021(03): 238-249 . 百度学术
8. 丁同福，汪敏华，赵俊峰. 华北型淮南煤田大构造成因分析及构造控水研究. 煤田地质与勘探. 2020(04): 102-108 . 本站查看
其他类型引用(6)
计量
- 文章访问数: 50
- HTML全文浏览量: 29
- PDF下载量: 1
- 被引次数: 14
下载:
