Packing method for blasting hole with water

Abstract

The invention discloses a packing method for a blasting hole with water. An emulsion explosive fills a drilled blasting hole with water and then the emulsion explosive is packed by water as stuffing. The packing process provided by the invention shortens the packing time and improves the packing efficiency. Moreover, the packing length is increased by virtue of water packing, the single hole explosive payload is reduced, the vibration of blasting is reduced, 70% or over of explosion dust is reduced, and the working environment is optimized; moreover, as water has the characteristics of being incompressible and transferring energy in every direction, an explosive section is expanded in a columnar shape by adopting water packing, and the water packing section absorbs energy and is continue to expand in the columnar shape, so that the lumpiness of rocks generated on the top of the blasting hole and generated by bottom detonation is uniform, blocks are unlikely to generate, a follow-up mining operation of the rocks is facilitated, the crushing step is canceled, and the follow-up processing cost is lowered.

Description

[0001] Technical field: [0002] The invention relates to a filling method, in particular to a filling method with a water blast hole. [0003] Background technique: [0004] In the construction of open-pit deep hole blasting, blast hole filling is a very important work procedure. The quality of filling and the length of filling directly affect the safety and quality of blasting. If the filling length is too large, there will be too many large blocks at the top of the blasting area. If the filling length is too small, flying stones and air shock waves will be generated during blasting, and the energy loss of explosives will be large, and the energy used for rock mass blasting will be small, resulting in blasting failure. [0005] At the same time, in the prior art, the drilling slag rock powder is used to fill the blast hole after the charge is completed. Because there is a large amount of water in the blast hole, the rock powder is not easy to settle, and the stuffing is easy ...

AI Technical Summary

Problems solved by technology

If the filling length is too large, there will be too many large blocks at the top of the blasting area. If the filling length is too small, flying stones and air shock waves will be generated when the hole is punched during blasting. The energy loss of explosives will be large, and the energy used for rock mass blasting will be small, resulting in blasting failure.

[0005] At the same time, in the prior art, the drilling slag rock powder is used to fill the blast hole after the charge is completed. Because there is a large amount of water in the blast hole, the rock powder is not easy to settle, and the stuffing is easy to soften during the filling process, resulting in a decrease in the quality of the filling. , resulting in punching during blasting, affecting safety and blasting quality

[0006] In addition, when the rock powder is filled, due to the high pressure of the rock powder and the compressibility of the rock powder, it can absorb energy. When the explosive explodes, it expands spherically, resulting in a small rock mass at the lower end of the blast hole, and a large rock mass at the upper end of the blast hole. The high rate of large chunks leads to difficulties in subsequent mining and installation, and additional crushing procedures are required, which increases processing costs