78 / 2023-03-31 23:58:45

房柱式采空区形态精准测绘研究

采空区,形态测绘

In the past, people mostly used the room and pillar mining method for mining, but it was limited by the process. The mining room retained the column and used the coal pillar to support the roof to prevent and control the caving, resulting in a large amount of coal resources becoming sluggish reserves. At the same time, due to the inability of the goaf to fully collapse, it brings certain risks to the safety of the coal mine. However, it has been nearly 20 years since the mining time of room-and-pillar goaf. Twenty years ago, whether the mining predecessors were the same as the design of the current textbook ' room-and-pillar ' mining method in terms of room-and-pillar mining theory and mining-remaining scale, whether the coal pillars in the goaf remained stable due to the rheological effects of air, temperature, water and time, how the roof fell, and how the development of the roof fracture zone in the goaf needed to be further studied. At the same time, because the mining engineering plan retained by the mine is not clear about the roadway layout in the goaf, it has brought great difficulties to the treatment of the remaining coal pillars in the goaf. Therefore, it is urgent to use the current advanced technical equipment to realize the accurate surveying and mapping of the shape of the goaf and the feasibility evaluation of the treatment, so as to provide the basis for the treatment of the goaf. 

Based on the success of the application of UAV in detection, this paper intends to put forward the idea of combining UAV with GNSS inertial navigation system, SLAM mapping technology and 3D laser scanning system, to carry out morphological mapping and position discrimination of underground old goaf morphology, which can provide a new idea for underground goaf detection.