Research On Dynamic Monitoring And Comprehensive Treatment Of Coal Mining Subsidence Area In Jining City

Land resources and coal resources are the natural resources for human survival and development.Coal mining has made great contributions to China's economic and social development,at the same time it has also brought serious harm to the land-Coal Mining Subsidence.In recent years,with the daily increase of coal mining subsidence,the harm brought by it has become more and more serious.Which has caused widespread concern from all walks of life.As an important coal production city in Shandong province,Jining is in the stage of industrialization and urbanization,its coal production accounts for more than half of the province's coal production.With the exploitation of coal resources,many underground areas of the city have become vacant and have caused considerable inconvenience to local people's production and life.The population is large,the land use is low,the contradiction is more prominent.In this paper,RS and GIS are combined to dynamically monitor the coal mine subsidence in the study area and formulate a set of planning measures in line with local development status,according to monitoring results,and then provide the better help and service for the local people.The conclusions as follows:(1)InSAR technology and object-oriented classification methods each has advantages and Complement each other.In this paper,the two methods are used in combination to extract three areas of the subsidence area of the Jining City in 1986,2003,2016.Verified that the extraction accuracy is higher,in line with the requirements of scientific experiments.The total area of the three period coal mining subsidence in Jining is 816.92hm2,5231.54hm2,24981.65hm2.(2)The distribution of the time and space of the subsidence area is that: Jining City coal mining subsidence area from 1986 to the end of the 20 th century,the subsidence area from the point-like distribution expansion to eight counties and cities,In addition to Jiaxiang County,Liangshan County and Sishui County,the rest of the counties have a certain degree of coal mining subsidence area;Until 2016 it has been spread to ten counties and cities,the only area where there is no collapse is Sishui County.The two most serious areas of collapse are mainly distributed in the southeast of Rencheng district and the junction of Yanzhou,Zoucheng and Qufu.(3)Based on the comparative analysis of the land use dynamic index of Jining City and the whole coal mining subsidence area,found that there is a large difference between the variation of the type of land in the coal mining subsidence area and the whole Jining city in the single land use dynamic index,especially in the period from 2003 to 2016,the difference becomes more obvious.For the comprehensive land use dynamic index,the index of 1986~2003,2003~2016 in coal mining subsidence area is much higher than that of Jining city,the values were 1.48% and 2.74%,respectively,the overall dynamic index were 0.29% and 0.71%.And on this basis,we analyze the driving forces of land use change through two aspects of nature and human beings.(4)In this paper,we comprehensively analysis the current situation and the current control situation of coal mining subsidence as well as the concrete problems in governance in Jining City.Combined with the relevant laws and regulations,the coal mining subsidence area of the governance model to make a preliminary design,including: design goals,design basis,design principles and model design four aspects.And from the actual situation of Jining City,put forward a series of comprehensive measures to strengthen publicity and education,strengthen the planning and management,establish a good working mechanism,strict law enforcement supervision,improve the regulatory mechanism,rational exploitation and scientific research.(5)Comprehensive treatment of coal mining subsidence area can not only guarantee the benefit of peasants,but also help the government departments to carry out agricultural planting and project planning and construction,and bring great improvement to urban and rural environment.In combination with the construction of the new countryside,the treatment of coal mining subsidence area is greatly improve the living environment of the relocation of village villagers,and the structure of urban and rural areas.The treatment of coal mining subsidence is of great significance to the sustainable utilization of land resources,the adjustment of economic structure,the steady rise of national economy and the coordinated development of human-land relationship.