急倾斜煤层水平分层开采引发的地表变形监测技术研究

西北地区厚黄土覆盖层急倾斜煤层开采引发的地表沉陷、地裂缝等地质灾害具有独特的发育特征,需要具有针对性的监测指标和方法,从而获取监测体的演变模式,本文选择甘肃省窑街三矿采煤引发的地表沉陷典型区域作为研究试验区,通过总结采煤工艺及地质条件差异引起的地表沉陷特征,结合采用传统测量技术与现代实时监测技术,实施了针对急倾斜煤层开采引发的厚黄土层变形监测工作,选取地表埋设GPS监测桩定期监测和安装拉绳变形监测仪实时采集数据的方法,实时监测塌陷区典型变形点的三维变形情况,并通过数据分析对垂向沉降和水平位移进行了对比,进一步对稳定区进行了划分。该研究为开展类似条件下的监测和研究工作积累了经验。

Study on surface deformation monitoring technology of caving steep-inclined coal seam with horizontally grouped top-coal drawing mining method

Study surface subsidence and ground fissure monitoring technology cause by caving steep-inclined coal seam in northwest area of China. Aiming at typical regional of surface subsidence in Yaojie Coal Mine of Lanzhou city, Summarize the characteristics of mining technology and geological conditions, Research thick loess deformation monitoring technology, Used GPS and displacement meter method which realize real-time data acquisition and on-line monitoring of geological disasters in the three-dimensional space. This paper introduces the deformation monitoring program and analysis of test results, provide experience for the research which is in the similar condition..