【摘要】 通过对茂名软岩矿区原有木支护巷道矿压显现的观测,掌握了该矿区软岩动压巷道变形的特点,研究了在这种条件下使用可拉伸锚杆与可缩性工字钢梯形支架联合支护的支护型式与支护参数,介绍了茂名黄塘岭矿使用这种联合支护后控制软岩动压巷道变形与防治底臌的显著效果。更多还原

【Abstract】 Based on observations of ground pressure in a roadway supported by timber in soft rock in Maoming Mine Area,the characteristics of roadway deformation were understood.The combined support,consisting of roof bolt truss and trapezoidal support of yieldable I-beam were used in such conditions.The paper studied the type of support and their parameters.This type of combined support was applied in Huangtangling Colliery in Maoming to control deformation of roadways and heave of the floor in the soft rock with satisfactory results.更多还原