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为解决公路下采煤时,不同开采方式的采空区上覆岩层导水裂缝带的发育高度和矿区公路路基高度直接影响煤矿安全生产和路基稳定的问题。针对目前矿区公路路基高度确定尚无系统的确定方法,通过对不同开采方式的采空区上覆岩层导水裂缝带发育高度的分析,结合路基稳定性评价标准,利用材料力学和弹性力学的相关理论,提出了一套矿区公路在不同开采方式下路基高度的确定方法:即采用路基稳定性评价标准,通过力学平衡分析方法计算矿区公路的影响深度,保证采空区上覆岩层导水裂缝带的发育高度与矿区公路的影响深度没有重叠部分,进而间接确定矿区公路的路基高度。
In order to solve the coal mining under the highway, the development height of the water-bearing fracture zone of the overlying rock strata and the height of roadbed in mining area directly affect the safety of coal mines and roadbed stability in different mining methods. Aiming at the lack of a systematic method to determine the height of roadbed in mining area at present, through analyzing the developmental height of the water-bearing fractured zone in overlying strata of mined-out area under different mining methods and combining with the evaluation criteria of subgrade stability, the relationship between material mechanics and elasticity is used Theory, a set of method to determine the height of subgrade under different mining methods is put forward. That is to say, by using the evaluation criteria of subgrade stability, the influence depth of highway in mining area is calculated by mechanics balance analysis method to ensure the water- Of the development height and the impact of the depth of the road without overlapping parts, and thus indirectly determine the subgrade height of mining road.