【摘要】：為實(shí)現(xiàn)快速自動(dòng)地從海量點(diǎn)云中獲取地表沉降信息,該文提出了一種基于TLS技術(shù)的礦區(qū)沉降信息快速自動(dòng)獲取方法。對(duì)點(diǎn)云數(shù)據(jù)完成預(yù)處理后,首先以相同網(wǎng)格劃分開采前后點(diǎn)云數(shù)據(jù),然后利用改進(jìn)的反距離權(quán)重法插值求取網(wǎng)格結(jié)點(diǎn)坐標(biāo),匹配相同網(wǎng)格結(jié)點(diǎn)作為同名點(diǎn)并求取下沉量,最后獲取下沉曲線與下沉DEM,該方法實(shí)現(xiàn)了礦區(qū)地表形變的全面分析,能夠快速自動(dòng)地獲取地表沉降信息。采用Riegl VZ-1000掃描儀采集某沉陷區(qū)開采前后點(diǎn)云數(shù)據(jù),經(jīng)過實(shí)驗(yàn)分析表明:該方法能夠?qū)崿F(xiàn)快速自動(dòng)提取同名點(diǎn)、下沉點(diǎn)、下沉曲線與下沉DEM;將計(jì)算結(jié)果與實(shí)測(cè)值進(jìn)行對(duì)比分析與精度分析,得到沉降結(jié)果符合實(shí)際地形變化情況,驗(yàn)證了該方法的可行性。該研究為三維激光掃描技術(shù)應(yīng)用于地表沉降監(jiān)測(cè)提供了支持。
[Abstract]:In order to obtain the ground subsidence information from the massive cloud of points quickly and automatically, this paper presents a fast and automatic method of mining subsidence information acquisition based on TLS technology. After preprocessing the point cloud data, the point cloud data before and after mining are divided into the same mesh at first, then the grid node coordinates are obtained by using the improved inverse distance weight method, which matches the same grid node as the same name point and calculates the subsidence amount. Finally, the subsidence curve and subsidence DEM, are obtained. The method realizes the comprehensive analysis of the surface deformation in the mining area, and can obtain the subsidence information automatically and quickly. The point cloud data before and after mining in a subsidence area are collected by Riegl VZ-1000 scanner. The experimental analysis shows that the method can quickly and automatically extract the same name point and sink point. The subsidence curve and the subsidence DEM; are compared with the measured values and the accuracy is analyzed. The settlement results are in line with the actual topographic changes and the feasibility of the method is verified. The research provides support for the application of three-dimensional laser scanning technology in surface subsidence monitoring.
【作者單位】： 河南理工大學(xué)測(cè)繪與國(guó)土信息工程學(xué)院;
【基金】：河南省科技攻關(guān)項(xiàng)目(162102210226) 國(guó)家測(cè)繪局測(cè)繪地理信息公益性行業(yè)專項(xiàng)(201412020) 河南省高等學(xué)校重點(diǎn)科研項(xiàng)目計(jì)劃(15A420005) 河南理工大學(xué)博士基金項(xiàng)目(B2012-004)
【分類號(hào)】：P642.26

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