Mine water stemming bag and application of mine water stemming bag in borehole blockage

Abstract

The invention provides a mine water stemming bag and an application of the mine water stemming bag in borehole blockage. By means of the mine water stemming bag, local self-locking can be achieved, and leakage of a bag opening can be prevented reliably. By applying the mine water stemming bag to borehole blockage and combining with polyurethane expansion foam composites, a convenient, quick, efficient and reliable borehole blockage effect can be achieved, labor intensity of manual borehole blocking is relieved, construction time is shortened, work efficiency is improved, and the forced mining and forced excavation technical requirements of underground metal mines are met on the premise that the blasting effect is guaranteed.

Description

technical field [0001] The invention belongs to the mining field of underground metal mines, and in particular relates to a mine water gun mud bag and its application in blast hole plugging. Background technique [0002] Existing water cannon mud bags generally use soft materials to make water inlet nozzles, and the water inlet nozzles extend into the bag body in reverse. Press fit together to close the water inlet. [0003] This design requires that the water pressure in the bag must be greater than the external atmospheric pressure, otherwise the liquid in the bag will leak from the water inlet. Therefore, the water injection of the bag body needs to be completed on the pipeline with certain water pressure in the downhole, which brings inconvenience to the construction. In addition, in the actual flow operation, the water pressure in the bag is also difficult to control. If the pressure is too high, the bag body will easily burst. If the pressure is too low, the water in...

AI Technical Summary

Problems solved by technology

In actual use, there are often deficiencies in the following aspects: First, due to the structure and processing quality of ordinary water gun mud bags, water leakage often occurs at the mouth of the bag during use, which may cause the explosives to be damp and affect the blasting effect.

Second, the combination of water blasting mud and solid blasting mud still has the disadvantages of high labor intensity, long time consumption, and low efficiency. It is not suitable for rapid plugging of blastholes under conditions of strong mining and strong excavation.

Third, the water-solid combination method is used to seal the hole. If the solid blasting clay is filled too long and pounded too quickly, it is easy to prevent blasting and residual blasting.

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