基于MIDAS软件对受采空区影响坡体的稳定性研究
Study on stability of slope affected by goaf based on MIDAS software
-
摘要: 为了解决煤矿采空区对附近地面边坡稳定性产生影响的问题，根据工程地质条件、强度折减原理及其他相关资料，采用大型商用岩土有限元分析软件MIDAS，对山西某采空区的形成过程以及天然状况下采动坡体在新老采空区影响下的变形破坏进行三维数值模拟。对水平位移、垂向位移及剪应变增量进行了模拟分析，并对采动坡体的稳定性进行定性、定量评价。研究结果表明：在天然状工况采动下，剪切带分布于采空区上方及两侧，完全采空后延伸到坡顶；在坡体倾向剖面上没有出现有利于坡体滑动的剪切带，且经采动坡体稳定性的定量分析，边坡的稳定系数为1.738大于规范规定的安全系数1.300，坡体处于稳定状态；在采空区岩体因沉陷变形产生的侧向推力为主的作用下，边坡的稳定系数为1.154，根据相关规范的边坡稳定性评价标准，边坡稳定系数大于1.050且小于规范规定的安全系数1.250，坡体处于基本稳定状态。Abstract: In order to solve the problem of the influence of the goaf on the stability of the ground slope, according to the engineering geological conditions, the strength reduction principle and other relevant data, the large-scale commercial geotechnical finite element analysis software Midas was used to form the formation of a goaf in Shanxi.The three-dimensional numerical simulation of the deformation and failure of the mining slope under the influence of new and old goaf under natural conditions. The simulation analysis under horizontal displacement, vertical displacement and shear strain increment was proposed, and the stability of the mining slope was qualitatively and quantitatively evaluated. The results showed that under the natural goaf condition, the shear zone was distributed above and on both sides of the goaf, and completely extended to the top of the slope after the goaf; there was no shear zone favorable to the sliding of the slope on the inclined section of the slope, and the stability of the slope was 1.738, which was greater than the safety factor of 1.300, and the slope was in a stable state.Under the action of lateral thrust caused by subsidence deformation in the goaf, the stability coefficient of the slope was 1.154.According to the relevant standard slope stability evaluation standard, the slope stability factor was greater than 1.050 and less than the safety factor of 1.250 specified by the specification, the slope is in a substantially steady state.
-
-
期刊类型引用(9)
1. 郭昆明. ?200 mm定向高位大直径一次成孔工艺技术的应用. 能源与环保. 2025(02): 31-35+41 . 
百度学术
2. 张占强. BLY1000/16型煤矿井下钻探用泥浆泵车设计. 煤矿机械. 2024(07): 5-7 . 百度学术
3. 陈超，陈天柱，张马军，王常委. 孤岛工作面碎软煤层跟管护孔钻进工艺研究. 工矿自动化. 2023(01): 73-79 . 百度学术
4. 段会军. 复杂顶板岩层大直径高位定向钻孔装备与技术. 煤炭技术. 2023(07): 112-115 . 百度学术
5. 段会军. 软硬互层顶板大直径定向钻孔成孔技术研究. 中国煤炭地质. 2023(10): 47-51 . 百度学术
6. 刘见中. 强化科技创新推动煤炭行业高质量发展研究. 中国煤炭. 2022(04): 1-7 . 百度学术
7. 冷明友. 顶板大直径定向钻孔快速施工技术研究. 矿山机械. 2022(07): 8-11 . 百度学术
8. 唐敏. 自动钻机集群作业线在Ⅲ1022底抽巷的研究与应用. 煤炭技术. 2022(08): 115-118 . 百度学术
9. 陶云奇，张剑钊，郭明功，于红，潘仁杰. 采动卸压瓦斯抽采以孔代巷技术研究与工程实践. 矿业安全与环保. 2022(05): 43-48 . 百度学术
其他类型引用(0)
计量
- 文章访问数: 129
- HTML全文浏览量: 3
- PDF下载量: 245
- 被引次数: 9
下载:
