›› 2018, Vol. 39 ›› Issue (S1): 425-436.doi: 10.16285/j.rsm.2018.0193

• 岩土工程研究 • 上一篇    下一篇

金属矿山采矿推进与地表变形关系研究

宋许根1,2,陈从新1,2,庞厚利3,夏开宗1,2,陈 山1,2,杨括宇1,2,孙朝燚1,2   

  1. 1. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,湖北 武汉 430071;2. 中国科学院大学,北京 100049; 3. 安徽理工大学 土木建筑学院,安徽 淮南 232001
  • 收稿日期:2018-01-30 出版日期:2018-07-20 发布日期:2018-09-02
  • 作者简介:宋许根,男,1992年生,硕士研究生,主要从事地下采矿稳定性,边坡稳定性方面的研究工作
  • 基金资助:

    国家重点研发计划专项(No. 2017YFC0805307);国家自然科学基金项目(No. 41602325,No. 41202225);中国科学院青年创新促进会资助(No. 2015271)。

Study of relationship between underground mining and surface deformation in metal mines

SONG Xu-gen1,2, CHEN Cong-xin1,2, PANG Hou-li3, XIA Kai-zong1,2, CHEN Shan1,2, YANG Kuo-yu1,2, SUN Chao-yi1,2   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, Anhui 232001, China
  • Received:2018-01-30 Online:2018-07-20 Published:2018-09-02
  • Supported by:

    This work was supported by the National Key R & D Program of China(2017YFC0805307), the National Natural Science Foundation of China(41602325, 41202225), and Youth Innovation Promotion Association CAS (2015271).

摘要: 分析金属矿山地下采矿引起的地表变形规律,可为地表变形扩展范围的预测与矿山安全生产提供指导。以程潮铁矿为例,对地下采矿情况的调查以及地表GPS、水准和三维激光扫描数据分析,探讨采空区周界变化与移动线和陷落线对应关系,采矿推进与沉降漏斗扩展之间关系,采矿推进与采空区上方及周边测点的变形规律。其结果表明,从2006−2017年间,随着西区–325、–342.5、–358、–375.5、–393 m水平采空区向不断向东移动,西区移动线和陷落线的扩展主要集中在西区东北部,东部和东南部;沉降漏斗东部有新的漏斗中心发育,沉降漏斗曲线逐渐呈2个漏斗中心的特点。采空区正上方测点变形受地下采矿推进直接控制,当开采测点正下方的矿体时测点变形会明显加速,而采空区周边测点,变形加速则受多种因素影响,并基于监测结果,分析了采空区上覆岩体崩落,通过建立采空区周边岩体力学模型,解释了测点变形规律,所得成果可为其他类似金属矿山提供参考。

关键词: 金属矿山, 地下采矿, 地表变形, 变形监测

Abstract: Analysis of surface deformation caused by underground mining in metal mines can provide guidance for the mine safety production and prediction of surface deformation. Taking Chengchao iron mine, Hubei province, in China, for example. Through the investigation of underground mining situations and the analysis of monitoring data by GPS, leveling and three-dimensional laser scanning. The relationship between the mined-out area and the movement and break lines, the relationship between underground mining and settlement funnel expansion and the relationship between underground mining and displacement of measuring points are discussed. The results show that the expansion of movement and break lines in the western mining area mainly concentrated in the northeast, east and southeast direction from the year of 2006 to 2017 due to the -325, -342.5, -358, -375.5 m and -393 m level mined-out area expand continuously to the east, and a new funnel center developed in the east of the settlement funnel, and the funnel curve of the settlement funnel gradually shows two funnel centers. The displacement of measuring point just above the mined-out area is directly controlled by the underground mining. When the orebody below the measuring points is explored, the deformation of the measuring points will be accelerated obviously. However, the displacement of measuring points in the vicinity of the mined-out is affected by many factors. Based on the monitoring results, the caving process of overlying rock masses is analyzed. However, the mechanical models of rock masses around the mined-out area are established, and the deformation law of monitoring points is explained. The results can provide references for other similar metal mines.

Key words: metal mine, underground mining, surface deformation, deformation monitoring

中图分类号: 

  • TD31

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