Research status and prospect on mining damage characteristics and protective technology of high-rise structures
GUO Wenbing, ZHAO Gaobo, MA Zhibao, YANG Weiqiang, LI Xuechen
河南理工大学能源科学与工程学院煤炭安全生产与清洁高效利用省部共建协同创新中心西弗吉尼亚大学矿业工程系焦作煤业(集团)科学技术研究所
我国一些矿区面临着高耸构筑物下压煤技术难题。矿区高耸构筑物具有高度大、横断面小、重心高、支撑基础底面积小等特点,作为一种特殊的构筑物,其对地下开采引起的地表移动变形较敏感。在分析了高耸构筑物自身特性及其采动变形特征基础上,从采动变形理论、数值模拟、变形监测技术、保护技术等4个方面总结分析了高耸构筑物采动损害与保护技术的研究发展历程,包括高耸构筑物与地基、基础协同变形理论、工作面开采对高耸构筑物变形影响数值(物理)模拟分析、实时高效精准监测技术、地基精准注浆加固技术、基础抗变形改造技术、高耸构筑物动态调斜技术、源头减损技术等;并展望了高耸构筑物采动损害与保护技术的4个发展方向:地表移动变形多指标作用下高耸构筑物采动变形规律,采动地表沉陷规律与高耸构筑物变形传导机理,高耸构筑物实时高效精准变形监测技术,高耸构筑物精准保护技术,以便形成地表高耸构筑物“变形小-监测精-保护准”的综合理论与技术体系,为高耸构筑物下安全高效采煤提供理论和技术支撑。
Some mining areas in China are facing with technical problems about coal mining under high-rise structures. The high-rise structure in the mining area is characterized by large height, small cross-section area, high center of gravity, small bottom area of supporting foundation, etc. It is a kind of special structure and is sensitive to the surface movement and deformation caused by underground mining. Based on the analysis of the characteristics of high-rise structures and their mining deformation characteristics, this paper summarizes and analyzes the research and development process of mining damage and protection technology of high-rise structures based on four aspects: mining deformation theory, numerical simulation, deformation monitoring technology, and protection technology, including the theory of cooperative deformation of high-rise structures and foundations, numerical (physical) simulation analysis of the impact of mining on the deformation of high-rise structures, real time, efficient and accurate monitoring technology, precise grouting and reinforcement technology for foundations, anti-deformation transformation technology for foundation, dynamic inclination adjustment technology for high-rise structures, reducing surface subsidence from the source, etc; The four development directions of mining damage and protection technology for high-rise structures are prospected: mining deformation characteristics of high-rise structures under the action of multiple indicators of surface movement and deformation, transmission mechanism from mining subsidence to deformation of high-rise structures, real-time and efficient accurate deformation monitoring technology for high-rise structures, and accurate protection technology for high-rise structures.
high-rise structures; mining subsidence; mining damage and protection; subsidence monitoring
0 引言
1 开采沉陷对高耸构筑物的影响特征
2 高耸构筑物采动变形理论与数值模拟
2.1 高耸构筑物与地基、基础协同变形理论
2.2 高耸构筑物采动变形特征数值模拟
2.2.1 给定地表移动变形对高耸构筑物影响模拟分析
2.2.2 工作面开采中对高耸构筑物变形影响模拟分析
3 高耸构筑物采动变形监测技术
3.1 常规监测技术
3.2 三维激光扫描技术
3.3 实时监测技术
4 采动影响下高耸构筑物保护技术
4.1 地基精准注浆加固技术
4.2 基础抗变形改造技术
4.3 高耸构筑物动态调斜技术
4.4 源头减损技术
5 结语
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会