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首页> 外文会议>Rock mechanics for resources, energy and environment >Analysis of the consequences of mining exploitation in substantially disturbed strata based on spatial measurements of a building’s tilt
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Analysis of the consequences of mining exploitation in substantially disturbed strata based on spatial measurements of a building’s tilt

机译：根据建筑物倾斜的空间测量结果分析严重扰动层中采矿开采的后果

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摘要

Mining in a rock mass substantially disturbed by many years of exploitation may lead to seriousrnconsequences for the surface and buildings. This paper presents an analysis of the consequences of mining inrnsuch conditions. The analysis has been based on the measurements of the tilt of a church tower situated overrnthe intersection point of the edges of two previously mined longwall panels. The exploitation of the next panel,rnin a seam below, resulted in the reactivation of the goaf. The results presented in this paper have been obtainedrnthrough the use of a remote building deformation monitoring system. One of the elements of this system is arnvibrating-wire (VW) tiltmeter which permits a spatial measurement of the tilt. The tests performed aimed tornestablish how a given building reacts to the impact of mining operations. The measurement system elaborated atrnthe Strata Mechanics Research Institute of the Polish Academy of Sciences (SMRI PAS) is able to continuouslyrn(with a pre-set frequency) monitor the tilt. The results obtained permitted the observation of the building’srnbehaviour during the time when the effects of mining exploitation were gradually revealed. The time of the firstrnreaction of the building and the tilt direction justify a conclusion that the main reason for the results observedrnwas the impact of the previously exploited longwall panels. The consequence of the fact that the panel edgesrnwere situated under the building was that it remained for a prolonged time in the area of positive strain of thernground and permanent sloping of the surface. When a lower lying seam was being mined and before the principalrnimpact of these operations reached the church its tower tilted sharply in the direction opposite to the directionrnthat should theoretically be expected to result from the impact of the moving mining face. Then, as the longwallrnpanel advanced a gradual turn of the tilt plane was recorded. The measurement system described in this paperrncan be used in scientific research done in the context of building protection as well as an engineering tool tornhelp evaluate the safety of buildings in mining areas. Thanks to gaining new knowledge about how buildingsrnreact to mining operations conducted in the circumstances of a substantially disturbed rock mass, appropriaternmethods can be elaborated to optimally design mining operations in order to protect the surface and the existingrnbuildings.
机译：开采已受到多年开采干扰的岩体中的开采可能会导致地表和建筑物的严重后果。本文对这种情况下的采矿后果进行了分析。该分析是基于对两座先前开采的长壁面板边缘交点上方的教堂塔楼倾斜度的测量结果。在下一个接缝中开采了下一块镶板，导致采空区重新活化。本文介绍的结果是通过使用远程建筑物变形监测系统获得的。该系统的要素之一是钢丝绳倾斜仪（VW），它可以对倾斜度进行空间测量。进行测试的目的是确定给定建筑物如何应对采矿作业的影响。波兰科学院地层力学研究所（SMRI PAS）精心设计的测量系统能够连续（以预设频率）监视倾斜。逐渐揭示出采矿利用的影响后，获得的结果使人们可以观察建筑物的运转行为。建筑物首次反应的时间和倾斜方向证明了一个结论，即观察到结果的主要原因是先前开发的长壁板的影响。面板边缘位于建筑物下方这一事实的结果是，它在地面的正应变和表面永久倾斜的区域中保留了较长的时间。在开采较低的煤层时，在这些作业的主要影响到达教堂之前，其塔向与理论上应由运动的采掘面的冲击所引起的方向相反的方向急剧倾斜。然后，随着长壁面板的前进，记录了倾斜平面的逐渐转向。本文所述的测量系统可用于建筑物保护范围内的科学研究，以及可帮助评估矿区建筑物安全的工程工具。由于获得了有关建筑物如何在严重扰动岩体的情况下对采矿作业进行反应的新知识，可以制定适当的方法来优化采矿作业的设计，以保护地面和现有建筑物。

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  • 会议地点 Wroclaw(PL)
  • 作者

    L. Florkowska; A. Kanciruk;

  • 作者单位

    The Strata Mechanics Research Institute of the Polish Academy of Sciences, Cracow, Poland;

    The Strata Mechanics Research Institute of the Polish Academy of Sciences, Cracow, Poland;

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