| 江苏省邳州石膏矿区采空地面塌陷发育特征与防治对策研究 |
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| 作者姓名： | 周丹 景佳俊 邢雪 |
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| 作者单位： | 1.江苏省地质矿产局第五地质大队,徐州 221004;2.河海大学,南京 210098 |
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| 摘 要： | 采空地面塌陷是江苏省邳州石膏矿区最主要的地质灾害类型,具有突发性、偶然性、隐蔽性等特点,矿区上方人口密集,耕地、河流分布广泛,对矿区内居民生命财产安全危害较大。在该区以往地质工作研究的基础上,通过对已发生的地面塌陷进行野外地质调查,综合分析了塌陷坑所处的基础地质条件、工程地质条件、水文地质条件、采空区形成历史、塌陷坑的形态、塌陷发展过程和人类工程活动等要素。结果表明: 邳州石膏矿老采空区主要分布于矿区中部及西部,其规格严重偏离房柱法开采规范要求,整体稳定性差,常形成面状地面变形和波状地面塌陷等; 近期采空区主要分布于中部及东部,常形成点状地面塌陷; 巷道开拓区,主要位于中东部新建矿井区,常形成点状地面塌陷及塌陷隐患点。根据国内对石膏矿区采空地面塌陷的治理经验,结合本区实际情况,提出了一系列防治措施,以便有效规避灾害风险。该研究对矿区下一步开展采空地面塌陷治理工作提供了技术支撑。
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| 关 键 词： | 石膏矿 采空区 地面塌陷 防治对策 |
| 收稿时间： | 2017-10-19 |
Study on the development characteristics and control countermeasure of ground collapse in gypsum mining area of Pizhou,Jiangsu Province |
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| Authors: | ZHOU Dan JING Jiajun XING Xue |
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| Institution: | 1. The fifth Geological Brigade of Jiangsu Geology and Mineral Exploration Bureau, Xuzhou 221004, China;2. HOHAI University, Nanjing 210098, China |
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| Abstract: | The ground collapse caused by mining is the majon type of geological disasters in gypsum mining area of Pizhou, Jiangsu Province. It has the characteristics of burstiness, contingency and invisibility. It causes huge damage to the safety of residents and their properties due to dense population and widely distributed land and rivers. Based on previous study of geological work, and through field geological survey of the ground collapse, the authors analyzed comprehensively the basic geological conditions, engineering geological conditions, hydrogeological conditions, formation history of the goafs, forms of collapse pits, development processes of the collapse and human engineering activities. The results show that the old goafs of the gypsum mine in Pizhou are mainly distributed in the middle and west of the mining area, whose specification seriously deviates from the mining requirements of the room and pillar method. The overall stability is poor, and the planar and undulate ground deformation is often formed. The recent goafs are mainly distributed in the middle and east of the mining area, which often form dotted ground collapse. The tunnel development areas, mainly located in the middle and east of the newly-built pit, often form dotted ground collapse and hidden points of collapse. Based on domestic managerial experience of ground collapse in gypsum mining area, and combined with the actual situation of this area, the authors proposed a series of prevention and control measures to effectively avoid the risk of disasters. The research could provide some technical support for the following work about control countermeasures of ground collapse in this mining area. |
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| Keywords: | gypsum mine goaf ground collapse control countermeasures |
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