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为了研究黄土沟壑区开采时,沟谷坡度对采动引起的滑动型地裂缝发育规律的影响,以神东矿区采矿地质条件为基础,采用UDEC数值模拟软件分析研究了滑动型地裂缝在不同沟谷坡度情况下的裂缝距、裂缝角和坡度关系,得到了不同沟谷坡度下的滑动型地裂缝的裂缝距和裂缝角。结果表明:在黄土沟壑区开采时,滑动型裂缝的裂缝距和裂缝角与沟谷坡度呈二次多项式关系;随着沟谷坡度的增大,裂缝距先增大后减小,裂缝角先减小后增大;对它们的关系式求极限得滑动型裂缝距和裂缝角达到极值时对应的沟谷坡度;滑动型地裂缝对煤矿安全和生态都会造成一定的危害,针对此问题提出了一些治理措施。
In order to study the influence of gully slope on the development of sliding ground fissures during mining in loess gully areas, based on the mining geological conditions in Shendong Mining Area, UDEC numerical simulation software was used to study the effects of sliding ground fissures on the slope of different valleys The crack distance and the crack angle of the sliding type ground fissures with different valley slopes were obtained. The results show that when mining in the loess hilly and gully area, the fracture distance and the crack angle of the slip-type fracture show a quadratic polynomial relation with the slope of the valley. As the slope of the valley increases, the fracture distance first increases then decreases and the fracture angle first decreases And then increases; the relationship between them is limited to the sliding type and the fracture angle when the fracture angle reaches the corresponding valley slope; sliding type of ground fissure on coal mine safety and ecology will cause some harm, put forward some solutions to this problem Measures.