52results about How to "Reduce plugging rate" patented technology

The invention discloses a stope debris flow treatment method in a caving mining method and a device of the method. In a stope ore discharge opening position of the caving mining method, before the stope ore discharge, an impact device is used for beating a water filtering steel pipe into a caving ore pile with the debris flow harm; water filter holes are uniformly distributed in the insertion front end of the water filtering steel pipe; the tail end of the water filtering steel pipe is connected with the suck-in end of a slurry pump through a rigid flange; the slurry pump is started; the blockage of the water filtering pipeline by debris flow slurry in the ore pile is eliminated through the negative pressure influence and the vibration effect exerted on the water filtering pipeline by the slurry pump; slurry and water in the ore pile is discharged as fast as possible; then, the impact device is continuously used for beating the water filtering steel pipe into a deeper position, with the debris flow damage, of the ore pile; slurry is discharged by the slurry pump; the operation is circulated in such a way until the slurry quantity in the stope ore pile is greatly reduced; the stope debris flow damage is eliminated. The method has the advantages that the operation is simple and convenient; the pipe blockage probability by mud and stones is low; the water discharge and mud discharge speed is high; the stope debris flow treatment effect is good; the water filtering steel pipe can be cyclically used, and the like.

The invention discloses a deep hole blasting filling method. The deep hole blasting filling method includes the steps that the bottom of a blast hole is filled and blocked with cement, and meanwhile the bottom resistance line is reserved; a pre-designed amount of first explosive is loaded to the bottom of the blast hole, and meanwhile a first double-detonator and detonating cord igniting explosive package and a first detonator are loaded into the blast hole along with the first explosive; the position on the top of the first explosive is filled with an appropriate amount of river sand; a pre-designed amount of second explosive is continuously loaded to the top of the river sand, and meanwhile a second double-detonator and detonating cord igniting explosive package and a second detonator are loaded into the blast hole along with the second explosive; after all the explosive is loaded into the blast hole, the top of the second explosive is filled with fine river sand, and then two water bags are hoisted into the blast hole and press on the top of the fine river sand. The deep hole blasting filling method solves the problems that according to an original filling scheme, the number of plug holes is large and a large amount of dust is generated.