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HU Bingnan, GUO Wenyan. Key technologies and development directions of building utilization in coal mining subsidence areas in China[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(4): 67-74. DOI: 10.13199/j.cnki.cst.2021.04.008
Citation: HU Bingnan, GUO Wenyan. Key technologies and development directions of building utilization in coal mining subsidence areas in China[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(4): 67-74. DOI: 10.13199/j.cnki.cst.2021.04.008

Key technologies and development directions of building utilization in coal mining subsidence areas in China

  • The building utilization of coal mining subsidence area is an important way to solve the problem of land resource shortage in the transformation and development of resource cities and the relocation site of villages in subsidence areas. The situation investigation on the mining subsidence area,demand analysis of the urban construction and building utilization,and review of engineering development process are summarized systematically. Key technologies of building utilization in coal mining subsidence area are summarized,firstly,the of precise survey technologies of goaf such as geophysical prospecting,drilling prospecting,borehole color TV and three-dimensional laser scanning are proposed concisely,and the applicable conditions of five geophysical methods are given. Then the stability of mining space and time in the evaluation technology is analyzed,and the five types (including areas not suitable for foundation,areas temporarily not suitable for foundation,areas requiring underground goaf treatment,areas available for foundation and areas recommended for foundation) of suitability classification of engineering construction is proposed based on the evaluation criteria of site stability and foundation stability. Moreover,the treatment measures and key technologies of goaf reinforcement and ground building anti-deformation structure are summarized. Finally,aimed to the technical difficulties and deficiencies of building utilization in coal mining subsidence area,the future research and development directions are put forward,such as strengthening the leading role of overall spatial planning of urban construction and building utilization in coal mining subsidence area,improving the level of technical equipment for accurate exploration and foundation reinforcement of goaf,expanding the research on the time-space regulations of residual movement and deformation after moving period,strengthening the mechanism and effect optimization of deformation synergy between goaf and building structure,and strengthening the research and development of monitoring technical and equipment for construction sites and buildings.. This paper can provide reference for promoting the scientific research and engineering practice development of urbanization construction in coal mining subsidence area.
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