The practice of measure ramp method constructed crushing chamber in complex geological conditions
The designed excavation section of a crushing chamber in a metal mine is 98.07 m2.The chamber is located in the weak rock stratum,the surrounding rock is loose and broken,and the self-stability is poor.The surrounding rock grade belongs to Class Ⅳ～Ⅴ rock.Because the stress distri-bution of surrounding rock is complicated and the construction is difficult,the measure ramp method is adopted in the construction of the crushing chamber in the weak rock stratum.Starting from the middle part of the main transport channel,the excavation measures ramp to the horizontal position of the crushing chamber,and then the crushing chamber is constructed in layers,and the work is carried out with the mechanized equipment such as drilling trolley,forklift truck and anchor bar trolley.This scheme effectively speeds up the construction progress and reduces the number of workers on the working face,and finally completes the construction of the crushing chamber safely and smoothly.The safe,efficient and rapid construction of the crushing chamber is realized by adopting the measure ramp method.
crushing chambermeasure rampstratified constructionmain transport middle roadwaymechanized operation
万方数据
维普
