山区复杂地形下地表移动盆地边界角量参数研究

Field Measurement of Boundary Angular Parameters of Surface Moving Basin under Complex Mountainous Terrain

为准确有效地获得山区复杂地形条件下地表运移规律和角量参数,以山西山区某矿20210复杂地形工作面为例,提出了一种“以点求面”的计算模式,在山区复杂地形工作面非主断面处建立地表移动观测网,利用遗传算法在参数优化推导中的优势,优化出本地区的概率积分法预计参数,拟合研究了山区复杂地形下的地表移动变形规律,得到了地表移动盆地边界角量参数。通过优化的参数对地表移动变形进行了概率积分法预计,并与非主断面实测数据进行了对比分析。结果表明:基于遗传算法优化参数得出的概率积分法结果,其误差均在5%以内,验证了预计参数及地表下沉数据的可靠性。该地形条件下地表移动下沉最大值为853 mm,矿区走向移动角为69.0°,上山移动角为73.1°,上山边界角为70.3°,下山边界角为59.4°,充分采动角为59.3°,最大下沉角为83.6°。

In order to accurately and effectively obtain the surface movement law and angular parameters under the complex terrain conditions in mountainous areas,taking 20210 working face with complex terrain of a mine in Shanxi Province as an example,a calculation mode of " seeking the whole by partial" is proposed. The surface movement observation network is established at the boundary of mining influence of working face with complex terrain in mountainous area,and an optimization scheme based on genetic algorithm is established The surface movement parameters are optimized by the integration method and the surface movement parameters are obtained by comparing the surface movement probability with the measured data. The results show that the error of the optimized probability integration method based on genetic algorithm is less than 5%,which verifies the reliability of prediction parameters and surface subsidence data. Under this terrain condition,the maximum surface movement subsidence is 853 mm,the strike movement angle of the mining area is 59. 0°,the upward movement angle is 73. 1°,the uphill boundary angle is 70. 3°,the downhill boundary angle is 59. 4°,the full mining angle is 59. 3° and the maximum subsidence angle is 83. 6°.