三维激光扫描技术在矿区建筑物变形规律提取中的应用
发布时间:2018-03-23 02:25
本文选题:三维激光扫描 切入点:煤矿开采沉陷 出处:《煤炭工程》2017年06期 论文类型:期刊论文
【摘要】:使用三维激光扫描技术获取沉陷区内三层框架结构建筑物点云数据,并使用随机抽样一致性算法(RANSAC)提取建筑物点云正交三轴特征线,拟合满足最小二乘情况下特征线的交点为特征点。对比两期数据间特征点变化以获取建筑物变形规律,并与概率积分法提取的地表移动变形规律进行对比。实验结果表明:该方法提取建筑物变形规律与概率积分计算地表移动变形规律相近,建筑物最大下沉值700mm,整体向东北方向倾斜,倾斜角度与竖直方向呈8.8'。建筑物向东北方向最大水平移动657.78mm,与南北轴线呈28.39°,最大拉伸变形1.69mm/m。
[Abstract]:The use of 3D laser scanning technology to obtain the settlement of three storey frame structure building in the area of point cloud data, and using the random sample consensus (RANSAC) algorithm to extract building point cloud three orthogonal axis lines, fitted under the condition of least squares intersection feature lines as feature points. Comparison of the two data points between the changes in order to obtain the deformation law of buildings. With probability integral method and extract the surface movement and deformation were compared. The experimental results show that the integral calculation of surface movement and deformation of similar rules and probability of the extraction method of deformation of buildings, building the sinking value of 700mm, the overall tilt to the northeast, the tilt angle and the vertical direction is 8.8'. building to the Northeast in the maximum horizontal movement is 657.78mm. 28.39 degrees and the north-south axis, the maximum tensile deformation of 1.69mm/m.
【作者单位】: 中国矿业大学环境与测绘学院;山东唐口煤业有限公司;
【基金】:国家自然科学基金项目(51504239)
【分类号】:TD325;TN249
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