本文選題：滲透率 + 煤基質��； 參考：《煤礦安全》2016年03期

【摘要】：通過建立雙孔隙度煤層變形控制方程,確定了基于煤層吸附理論的Biot孔隙壓力系數。分別建立了存在吸附作用的條件下,煤層基質和裂隙滲透率的數值模型。研究發(fā)現,通過增加基質孔隙壓力,基質將發(fā)生與孔隙壓力相關的體積應變,基質體積模量將會減小;基質增大的體積占據了部分孔隙,導致煤層基質滲透率減小;隨著吸附的進行,經過一定時間,煤層裂隙滲透率會出現陡降。
[Abstract]:The Biot pore pressure coefficient based on coal adsorption theory is determined by establishing the deformation control equation of double porosity coal seam. The numerical models of coal seam matrix and fracture permeability were established under the condition of adsorption. It is found that by increasing the pore pressure of the matrix, the volume strain associated with the pore pressure of the matrix will occur, and the volume modulus of the matrix will decrease, while the increased volume of the matrix will occupy part of the pores, resulting in the decrease of the permeability of the coal bed matrix. With the adsorption, the permeability of coal seam fissure will drop steeply after a certain time.
【作者單位】： 貴州理工學院采礦工程學院;
【基金】：貴州省科技廳科技合作計劃資助項目(黔科合LH字[2015]7107) 貴州省教育廳招標資助項目(黔教合KY字[2015]353)
【分類號】：TD712

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