Support method used in passing water guide fracture structure in mine exploration
A technology of fracture structure and water conduction, applied in mining equipment, earth-moving drilling, wellbore lining, etc., can solve the problems of insecure safety, roadway collapse, personal safety threats, etc.
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[0017] The supporting method of the water-conducting fracture structure in mine mining of the present invention comprises the following steps:
[0018] (1) Excavate an arched working roadway 1 with a cross-section of 4.2m in height and 3.4m in width along the direction perpendicular to the fault surface, and excavate a cross-section with a height of 5.2m in the circumferential direction of the wall of the working roadway 1 every 1.5m forward. m × 4.2m wide arched groove 2, in which a U-shaped steel bracket with a height of 5.2m × a width of 4.2m is placed. When the front excavation working roadway 1 is 5-10m away from the fault surface, stop the forward excavation;
[0019] (2) Afterwards, the end of the working roadway 1 is expanded, and the grouting equipment roadway 3 with a length of 3 meters is expanded forward. Grouting equipment is placed in the roadway 3 of the grouting equipment for injecting cement mortar, combined with figure 1 As shown, then the end of the roadwa...
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