黄土沟谷下不同位置开采对地裂缝的影响研究

Effects of Different Locations Exploitation of Ground Cracks under Loess Valleys

黄土沟壑区开采时,沟谷中心与工作面的相对位置对滑动型地裂缝有显著的影响。采用UDEC软件模拟了沟谷中心位于工作面不同位置时引起的滑动型地裂缝的裂缝距、裂缝角。研究结果表明:采动引起的滑动型裂缝距与工作面相对位置呈明显的线性关系;随着沟谷中心向工作面中心移动,左侧坡体裂缝发育越来越显著,裂缝距由负变为正且呈增大趋势;并对它们的关系式求极值得到裂缝发育位置的沟谷中心位置临界值,并针对地裂缝提出一些治理措施。

Loess gully area mining, valley center and the relative position of the face have a significant impact on the sliding ground cracks. UDEC software is used to simulate the crack using a sliding-type ground fissures in the valley center is located face arising from different locations, crack angle. The results show that: sliding away from the cracks caused by mining showed a linear relationship with their; valley center when moving to face with the center left of the slope increasingly significant fractures, cracks away from negative to positive and showed increasing trend; and their relationship is worth seeking pole position valley center position of the critical value of fractures and cracks make some control measures in place.