为全面获取采动煤层底板破坏演化及层次性特征，采用钻孔注水试验法（点）、钻孔窥视法（点）、钻孔分布式光纤监测法（线）、瞬变电磁法（面）4种方法，构建了煤层底板全空间点-线-面协同监测模式；根据煤层底板采动破坏程度，从裂隙导水性、拉伸剪切应变、采动岩层物性多参量角度，将将传统的“下三带”中的煤层底板采动导水破坏带划分为导水裂隙带、应力应变带、物性差异带；以平朔矿区9煤工作面为实测对象，监测获取了采动煤层底板全空间、动静态、多层次变形破坏特征。研究结果表明：点-线-面多参量协同监测方法在监测空间上可实现点线面动静结合监测，在监测内容上可满足直接或间接获取裂隙发育特征、导水性、应变变形以及物性等多参量的要求。钻孔注水试验法和钻孔窥视法为直接监测裂隙发育特征的方法，获取的导水破坏带高度为21.75 m；采用钻孔分布式光纤监测法可动态监测裂隙发育特征，分析得出在工作面推进至钻孔附近，底板局部岩体出现拉伸破坏，工作面推过钻孔一段距离，底板岩体拉伸程度继续增大、但破坏深度基本保持稳定，实测得出应力应变带高度为25.15 m；采用瞬变电磁法可对比获取采前、采后底板岩体物性变化特征，分析得出物性差异带高度为22～27 m，较好地验证了底板采动破坏层次性划分特征。

In order to fully obtain the failure evolution and hierarchical characteristics of mining coal seam floor, the borehole water injection test method (point), the borehole peeping method (point), the borehole distributed optical fiber monitoring method (line), and the transient electromagnetic method (plane) were used to construct a full-space point-line-surface collaborative monitoring mode of the coal seam floor;according to the mining failure degree of coal seam floor, from the multi-parameter perspectives of fracture water conductivity, tensile shear strain, and physical properties of mining rock, the water-conducting damage zone of the coal seam floor in the lower three zones is divided into water conduction failure zone, stress-strain zone and physical property difference zone; Taking No.9 coal working face in Pingshuo Mining Area as the measured object, the full space of the mining coal seam floor, dynamic and static, multi-level deformation and failure characteristics of mining coal seam floor are obtained. The results show that point-line-plane multi-parameter collaborative monitoring method can realize point-line-plane dynamic and dynamic monitoring in monitoring space. The monitoring content can meet the requirements of obtaining the characteristics of fracture development, water conductivity, strain deformation and physical properties directly or indirectly. The borehole water injection test method and the borehole peeping method are the methods to directly monitor the development characteristics of fractures, A water conduction failure zone of 21.75 m was obtained using distributed optical fiber monitoring method to dynamically monitor fracture development characteristics.When advancing to the vicinity of the borehole, the local rock mass of the bottom plate appeared tensile failure. The working face pushes through the borehole for a distance, and the tensile degree of the rock mass of the bottom plate continues to increase, but the depth of failure remains basically stable and the measured stress-strain zone was 25.15m. The transient electromagnetic method can be used to compare and obtain the physical properties of rock mass before and after mining.The analysis shows that the physical property difference zone is 22-27 m, which well verifies the hierarchical division characteristics of the floor mining damage.