Damage Assessment Visualization Research On The Ground Buildings Of Village By Coal Mining

In China, the exploitation of coal resource has important significance inpromoting the development of the national economy. Due to the large demandfor coal in our country, coal mining has already reached to under buildings,water bodies and railways mining model. And mining intensity and miningrange is constantly expanded, which results the surface movement anddeformation in a larger scale and scope. This phenomenon has not only seriouslyaffected the normal use and operations of roads, residential areas and industrialenterprises where are at the top of the mined-out area；but also threatened thelives and safety of people living in the mining area. Therefore, in order tominimize the ground subsidence disasters caused by coal mining in mining area,it is very necessary and urgent to research and predict the damage to groundbuildings by mining subsidence.Based on the surface movement deformation results that are obtained, thispaper aims to solve the problem which is the damage to the buildings in village by coal mining. We focus on adopting the independent development technologyof Visual Basic, with the secondary development basic idea of AutoCAD whichis a graphic processing tool, and Access database management system. Miningdamage assessment visualization system of buildings is designed to research thedamage degree and characteristics of village construction by mining. The mainwork is completed as the following aspects:(1)This paper has analyzed the principle of probability integral method andbasic laws of surface movement deformation in mining area. And on this basis itmakes use of the mountain coal mining surface movement and deformationprediction software MMSPS to predict surface movement deformation values inmining subsidence, for getting the results and characteristics of surfacemovement deformation.(2) Combined with AutoCAD’s powerful editing features, graphics and ahigh degree of openness, this paper is focusing on building an automaticdrawing method of mobile deformable contour and a visualization method ofdamage distribution grade based on AutoCAD secondary development oftechnology.(3) On the basis of damage grade distribution visualization results, miningdamage to surface buildings evaluation result is obtained by complex algorithmof the system, we can take advantage of statistical analysis and query function ofinformation, this system has summarized the building damage assessmentinformation, and automatically generated a variety of thematic maps such as damage area information of the buildings or the subsidence area information andso on; the corresponding characteristic part has been highlightedSynchronization with the attribute query results, which is making the queryresults at a glance. Moreover, the system can always choose the desired resultsand graphical query statistics results to save and output respectively, whichembodies the real-time property of system information preservation.(4) We have selected Yinjiagou coal mine as the research object, in view ofthe specific geological and mining conditions in the northeast of Yinjiacunvillage, damage assessment visualization system of the buildings is Applied to apractice. The paper describes the entire anticipated evaluation and visualizationprocesses in detail, grade evaluation of mining damage results are clear,prominent. It has guiding significance for next mining work in coal mine.In this paper, based on the damage of the secondary development ofAutoCAD, the damage assessment results by building damage assessmentresults visualization system are concise and clear. This system can not onlyachieve a variety of graphics rendering, displaying, querying, statist icing andother functions, but also retains the AutoCAD itself powerful graphics renderingoperation function, it has a very important practical significance for theexploitation of mining subsidence damage prediction.