含瓦斯煤循环加载破坏表面电位实验研究

发布时间：2018-06-04 05:50

  本文选题：煤与瓦斯突出 + 含瓦斯煤　； 参考：《工矿自动化》2015年09期

【摘要】：为了研究循环加载条件下瓦斯对煤体破坏表面电位的影响,搭建了含瓦斯煤受载破坏表面电位实验系统,测试并分析了不同瓦斯压力条件下,煤体循环加载破坏产生表面电位信号的特征规律,探讨了有瓦斯参与情况下煤体受载破坏的机理。实验结果表明,煤体在有瓦斯的条件下受载破坏能够产生表面电位信号,且电位信号与应力和瓦斯的变化趋势具有一定的关联性;对于同一类型煤样,随着充入瓦斯压力的增加,电位信号最大时的应力水平逐渐减小;在循环加载过程中,当应力超过前一次加载应力最大值时,电位信号明显增大。
[Abstract]:In order to study the effect of gas on the surface potential of coal body failure under cyclic loading, an experimental system of surface potential of coal loaded with gas was set up, and different gas pressure conditions were tested and analyzed. The characteristic law of surface potential signal produced by cyclic loading failure of coal body is discussed, and the mechanism of coal body under loading damage is discussed. The experimental results show that the surface potential signal can be produced when the coal body is damaged under the condition of gas, and the potential signal is related to the stress and the change trend of gas, and for the same type of coal sample, With the increase of gas pressure, the stress level decreases gradually when the potential signal is maximum, and the potential signal increases obviously when the stress exceeds the maximum value of the previous loading stress during cyclic loading.
【作者单位】： 华北科技学院安全培训部;
【基金】：中央高校基本科研业务费资助项目(3142015051,3142015001)
【分类号】：TD713
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本文编号：1976234