TY -的A2冯Ruimin盟——见鬼,鑫盟——你,分盟,张向阳AU -布鲁里溃疡,Qingwei PY - 2021 DA - 2021/10/31 TI -影响的分析上保护层开采卸压的影响和保护煤炭和降低覆层之间的岩体SP - 8682156六世- 2021 AB -保护煤层开采是一种有效的气体在深部开采卸压方法。有效的理论计算方法在当前研究的预测煤岩互层卸压保护效果质量及其分布规律是缺乏。因此,评价和研究对在保护煤层开采卸压效果相对落后。这种状况限制了工程可行性评估和决策在保护煤层开采。因此,上保护煤层开采的影响在煤岩体的卸压保护效果之间潜在的床在本研究调查。具体工程项目的分析的基础上,建立了力学模型的卸压保护效果上保护煤层开采的煤岩体之间潜在的床。减压膨胀比的分布方程在底层保护缝也派生。主要影响因素的影响法律保护煤层的卸压保护效果也显示。最后,减压效果进行了分析和验证保护煤层开采前后通过数值模拟和相似模拟试验。上保护煤层开采的卸压效果之间的煤岩体潜在床和分布特征的深入探讨,在这项研究中,从而为决策提供理论参考的天然气开采工程设计和pre-evaluation提取效果。 Results show that the effective pressure relief zone (expansion rate>0.3%) of the protected seam beneath the goaf is located within the range of approximately 40 m from the coal wall to the rear part. It also presents an approximate “Λ-shaped distribution characteristic,” that is, it experiences migration and evolution with the advancement in the working face. Moreover, the peak pressure relief lags behind the coal wall on the working face by nearly 10–20 m. In the numerical simulation, the expansion ratio in the goaf also presents an approximate “Λ-shaped distribution.” Its effective pressure relief zone is the 50 m range from the coal wall to the rear part of the goaf, and the peak value lags behind the coal wall by around 15 m. The theoretical results and numerical simulation results are basically consistent with the physical experiment results. The expansion rates are 1.25%, 1.268%, and 1.32%, respectively. The elastic modulus E煤层和夹层间距 H膨胀变形的主要影响因素,并与膨胀率负相关。在实际开采过程中, E和H的保护层可以测量来推断的膨胀变形层保护。SN - 1687 - 8086 UR - https://doi.org/10.1155/2021/8682156 - 10.1155 / 2021/8682156摩根富林明土木工程的进步PB - Hindawi KW - ER