摘要
笔者在分析了淄博煤矿采区大量突水实例的基础上,采用了见效快的软材料光弹模拟试验,较为详细地研究了底鼓水在水压、矿压、结构面隔水层厚度、回采距离等几个主要影响因素作用下的力学机理。论证了煤层底板有、无结构面情况下应力分布规律,以及研究这种规律所应选取的力学理论指出了产生底鼓水的最佳应力条件。这些为寻求较为合理的预报公式有一定的启迪作用。
Based on the analysis of a large number of examples of the water bursting in zibo coal mining area, with the resultquicked photoelastic model test the author has studied in detail the mechanical mechanism of floor heave water under the influence of severaI main factors, such as hydraulic pressure, mining pressure, structure plane, thickness of water-resisting layer, distance of extraction and so on.The author has demonstrated the stress distribution patterns of the coal seam floor with or without structure planes, discussed the mechanical theory dealing with these patterns and pointed out the optimum stress condition of floor heave water. These will be enlightening to seek a suitable prediction formula.
