【摘要】 采用现场空心包体套孔应力解除法对宣东二号煤矿进行了地应力测量,确定了地应力状态和分布特征,实测了煤矿-230水平运输大巷的三维地应力的大小和方向。测量结果表明,煤矿最大水平主应力方向为SW-NE向,水平构造应力很大且占主导地位,并提出了高应力巷道支护对策。更多还原

【Abstract】 The hollow inclusion stress relief method was used to measure the geostress of Xuandong No.2 Mine,including the geostress state and its distribution characteristics.The magnitude and direction of 3Dgeostress were measured at the level of-230transportation alleys.Measurement results showed that the maximum horizontal principal stress is along with SW-NE direction.The horizontal tectonic stress is large and dominant,so a high-stress roadway support was proposed.更多还原