Study of influence of discontinuities on rock movement and surface deformation in eastern area of Chengchao iron mine

XI Ren-shuang; CHEN Cong-xin; XIAO Guo-feng; HUANG Ping-lu

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Study of influence of discontinuities on rock movement and surface deformation in eastern area of Chengchao iron mine

更新时间：2026-06-25

- Study of influence of discontinuities on rock movement and surface deformation in eastern area of Chengchao iron mine
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  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,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TD325
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
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XI Ren-shuang, CHEN Cong-xin, XIAO Guo-feng, et al. Study of influence of discontinuities on rock movement and surface deformation in eastern area of Chengchao iron mine[J]. 2011, 32(S2).
DOI：

XI Ren-shuang, CHEN Cong-xin, XIAO Guo-feng, et al. Study of influence of discontinuities on rock movement and surface deformation in eastern area of Chengchao iron mine[J]. 2011, 32(S2). DOI：

摘要

以程潮铁矿东区为例，通过现场结构面调查、地表及深部岩体变形监测，分析了该区地表及岩体移动变形与结构面的关系。结果表明：程潮铁矿东区地表及岩体移动变形主要受该区复杂的地质条件控制，特别是结构面的影响，变形方向和变形量值均与理论预期不同。NNE、NE向结构面的存在控制着岩体向采空区运动的侧向边界条件，同时导致变形方向的向西偏转，NWW向结构面的松动导致东主井区岩体向采空区的倾倒变形，地表变形在南北剖面上呈三级阶梯分布；西风井相对东西采空区的特殊位置以及NE向结构面的影响使其变形值小于预期，是该区相对安全的主要原因。

Abstract

Taking a typical iron mine as the background engineering

the discontinuities of rock mass were revealed by the field geological survey and borehole camera technology; and based on the results of deformation monitoring including the global positioning system(GPS)

leveling measurement

fissure extensometer monitoring and borehole deviation surveying

the influence of discontinuities on rock movement and surface deformation caused by underground mining is analyzed. Results obtained indicate that: the special geological structures such as faults and joints have an important influence on rock movement and surface deformation; the actual deformation direction and value are different from theoretical prediction. The NNE- and NE-trending discontinuities control the lateral boundary conditions of movement of the rock mass

which cause the deflection of the direction of the surface movement. The NWW-trending discontinuities cause toppling deformation towards mined-out area; and the ground subsidence shows three-level ladder shape in this direction in eastern main shaft area. The smaller surface deformation and rock movement in western ventilating shaft area is resulted from its relative location with two gobs and the influence of the NE-trending discontinuities

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