基于InSAR地表沉降监测方法研究

Research on Monitoring Method of Surface Subsidence Based on InSAR

以河南某矿工作面为背景,验证充填开采对地表沉陷的保护效果,同时验证InSAR地表沉降监测方法的可靠性。研究结果表明,充填开采能对上覆岩层及地表沉陷起到控制作用,在同样的开采条件下,随着充填率提高,覆岩竖直方向的移动量减小,可对地表砖混结构建筑物起到良好的保护作用。现场实测地表最大下沉量为0.13 m,最大倾斜值为1.2 mm/m,平均曲率为0.03 mm/m^(2),结果表明地表下沉较小,生态环境得到保护,实现了绿色开采。工作面推进过程中,巷道最大离层量为24.5 mm,无明显底鼓和冒顶现象,监测结果表明,来压强度较小,巷道扰动低,工作面能够安全开采。

Take a mining face in Henan province as the background to verify the protection effect of filling mining on surface subsidence, and to verify the reliability of InSAR surface subsidence monitoring method. The research results show that filling mining can control the overlying strata and surface subsidence. Under the same mining conditions, with the increase of filling rate, the vertical displacement of overlying strata decreases, which can play a good role in protecting the surface brickconcrete structures. The maximum surface subsidence measured on site is 0.13 m, the maximum inclination is 1.2 mm/m, and the average curvature is 0.03 mm/m^(2). The results show that the surface subsidence is good, the ecological environment is protected, and green mining is realized. During the advancement of the working face, the maximum separation of the roadway is 24.5 mm, without obvious floor heave and roof fall. The monitoring results show that the weighting intensity is small, the roadway disturbance is low, and the working face can be safely mined.