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| 融合电磁物探与数值方法的采空区覆岩性状及地基稳定性研究 |
| Study on overburden rock properties and foundation stability in goaf by combining electromagnetic geophysical prospecting and numerical method |
| 投稿时间：2023-08-29 修订日期：2023-10-28 |
| DOI： |
| 中文关键词: 采空区、电阻率、高层建筑、稳定性评价、潜在隐患 |
| 英文关键词: goaf, resistivity, high-rise buildings, stability evaluation, potential hazards |
| 基金项目: |
| 作者 | 单位 | 邮编 | | 李竟境 | 湖南科技大学资源环境与安全工程学院 | 411201 | | 高如高* | 湖南科技大学资源环境与安全工程学院 | 411201 |
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| 摘要点击次数: 138 |
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| 中文摘要: |
| 矿山开采引起的岩层移动会影响地表建筑的地基稳定性，甚至造成沉陷破坏。为研究某旧矿区上部高层建筑地基的潜在隐患并提出相应防治措施，采用StrataGem电磁系统及数值仿真及理论计算结合的方法进行稳定性评估，结果表明：空区覆岩结构完整性较好，并目附加应力值远小于失稳临界值，未产生明显的沉陷。建设工程场地内的已知采空区对拟建高层建筑具有一定的影响，特别是高层建筑的东南角地段，模拟结果最大沉降值为87mm，高层建筑地基范围内其他部分沉降则逐渐降低，整体呈现距离空区越远沉降值越小的趋势。研究表明，融合物探信息进行模型预测的结果是基本可靠的，本文研究将为采空区工程地质认识与上部地基稳定性评价提供理论与技术参考。 |
| 英文摘要: |
| The rock movement caused by mining will affect the foundation stability of surface buildings, and even cause subsidence damage. In order to study the potential hidden dangers of the foundation of high-rise buildings in the upper part of an old mining area and put forward corresponding prevention measures, the StrataGem electromagnetic system and the combination of numerical simulation and theoretical calculation are used to evaluate the stability. The results show that the structural integrity of the overlying rock in the goaf is good, and the additional stress value is far less than the critical value of instability, and there is no obvious subsidence. The known goaf in the construction project site has a certain influence on the proposed high-rise building, especially in the southeast corner of the high-rise building. The maximum settlement value of the simulation results is 87 mm, and the settlement of other parts of the high-rise building foundation is gradually reduced. The farther away from the goaf, the smaller the settlement value. The research shows that the results of model prediction by integrating geophysical information are basically reliable. This paper will provide theoretical and technical reference for engineering geological understanding of goaf and stability evaluation of upper foundation. |
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