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为了揭示煤矿开采引起的厚松散层承压含水层失水增大地表移动变形量的机理,采用专门设计的模拟实验装置,开展松散层承压水失水沉降模拟实验,结合理论分析了松散层承压水失水对地表下沉的影响机理。实验结果表明:土体在未加压与加压的情况下,都会因为失水产生固结沉降,造成含水层的固结压缩变形;在相同条件下,细粒径土质比粗粒径土质产生的变形量更大。
In order to reveal the mechanism of surface deformation due to water loss caused by water loss of thick and unconsolidated confined aquifer due to coal mining, a specially designed simulation experiment device was used to simulate the water loss and sedimentation of confined water in loose layer. The theory of loose layer Influence mechanism of water loss due to confined water on surface subsidence. The experimental results show that the consolidation and settlement of the aquifer will occur due to the loss of water under the condition of no pressurization and pressurization. Under the same conditions, the fine-grained soil is produced more than the coarse-grained soil The amount of deformation is greater.