【作者】 徐小兵；

【导师】 程久龙；

【作者基本信息】 山东科技大学 ， 采矿工程， 2007， 硕士

【摘要】 煤与瓦斯突出是煤矿主要灾害之一。随着开采深度增加，煤与瓦斯突出危险区域扩大，部分非突出矿井也升级为突出危险矿井。因此，做好煤层突出危险性预测是保证突出危险煤层安全高效生产的决定性环节。通过可靠的突出危险性预测，将非突出危险区域极大限度地划分出来，对确保煤矿安全生产，做到防突技术措施有的放矢，解放生产力，节约费用以及提高矿井的经济效益都有着重要的作用和意义。对煤与瓦斯突出倾向性进行预测可以为瓦斯突出防治提供有效的技术途径。电磁波在含瓦斯煤岩体中的传播特征提供了煤与瓦斯突出的前兆信息，利用这个特性可以对突出进行预测。工作面的推进引起工作面前方煤岩体应力场的变化，这种变化的应力场必然导致受载煤岩体的电性参数发生变化，结合电磁波在受超前支撑压力作用下煤岩体中的传播规律，建立突出力学一地球物理模型。结合具体煤与瓦斯突出工作面的地质物理力学参数，利用离散元法计算煤岩体破坏的空间分布情况及应力场的分布情况，再根据力电耦合模型，用计算机层析成像技术来反演突出倾向性工作面中的电磁波场特征。最后通过电磁波CT探测构造煤的试验，从实践方面进一步说明了电磁波层析成像技术预测突出的可行性。更多还原

【Abstract】 Coal and gas outburst is one of the main disasters in coal mines. With the mining depth increasing, the dangerous regions expand and some non-outburst mines become the outburst dangerous mines .Therefore, to forecast the coal seam outburst danger is the decisive link to guarantee outburst dangerous coal seam safe and highly effective production. Through the reliable outburst danger forecasting to differentiate the non-outburst dangerous region best, to guarantee the coal mine safe production, to guard the technical measure against the outburst a clear goal, to liberate productive forces, to save the expense as well as enhance the mine the economic efficiency ,it has the vital role and the significance.The forecasting the coal and gas outburst orientation provides an effective technology way for preventing the gas outburst. The electromagnetic propagation characteristic in coal and rock mass with gas provides the precursor information of coal and gas outburst, which may forecast the coal and gas outburst. The working face advancing arousing the stress field change in the front coal mass, which necessarily leads to changes of electrical parameter in the coal and rock mass, combining the electromagnetic wave propagation rules in coal and rock mass acted by the previous supporting press, the coal and gas outburst mechanical model was set up. Combining the geological physical and mechanical parameters about the coal and gas outburst in the specific working face, using the universal distinct element method to calculate coal and rock mass destruction spatial distribution and stress field distribution; and according to stress electricity coupling model, using electromagnetic computerized tomography technology to inverse the electromagnetic wave field characteristic in the working face with coal and gas outburst orientation.Finally, through the test of electromagnetic wave CT detecting structure coal, it further proved electromagnetic wave computerized tomography technology predicting the outburst feasibility at practice.更多还原