Efficient, safe and environment-friendly post-water-injection type static blasting method and water injection device using same

Abstract

The invention relates to the field of static blasting, in particular to an efficient, safe and environment-friendly post-water-injection type static blasting method and a water injection device using the method. The method comprises the steps that a plurality of holes are drilled at designed intervals in the working face in the air of a place needing static blasting; a water injection tube is inserted into each hole, one end of each water injection tube is close to the bottom of the corresponding hole, and the other end of each water injection tube extends out of the corresponding hole opening; the holes are filled with expanding agents and rapid solidification mixed materials so that the hole openings can be sealed, and gaps are reserved between the insertion ends of air outlet tubes and the interfaces of the expanding agents; after the hole openings are sealed after solidification, water is injected into the holes. Because the technology of drilling a large hole array on the working face with a down-the-hole drill, the technology of tubular expanding agent filling and the post-water-injection technology are adopted, the static blasting method is applicable to rock excavation construction beside tall urban buildings, railways in operation, expressways and high-voltage steel pylons, and the purposes that high-work-amount rock excavation and concrete removal static blasting construction is safe and environment-friendly, and is carried out without shakes or flying stones or sounds or dust are achieved.

Description

technical field [0001] The invention relates to the field of static blasting, in particular to an efficient, safe and environment-friendly static blasting method and a water injection device using the method. Background technique [0002] Compared with explosive blasting, static blasting has no vibration, no flying stones, sound, dust and environmental pollution. It is suitable for crushing and demolishing stonework next to buildings, and stonework next to railways, highways, and high-voltage transmission towers in operation. Waiting for crushing and demolition is the most environmentally friendly crushing and demolition method. [0003] The traditional static blasting method is to mix the expansion agent and water in proportion, fully stir them into a fluid state, and manually pour them into holes with a diameter of no more than 50 mm and a depth of no more than 3000 mm. The chemical reaction between the expansion agent and water causes The volume expansion deforms and cra...

AI Technical Summary

Problems solved by technology

This traditional static crushing technology is only suitable for the demolition construction of partial, small-scale granite and marble blocks or stone cubes that need to be partially removed. The disadvantages are: 1. Due to the expansion agent and water are mixed into a fluid state After pouring into the hole, it is difficult and slow to pour. In order to make the expansion agent poured into the hole react and expand at the same time, the amount of expansion agent to be blended each time is limited, resulting in time-consuming, labor-intensive and inefficient operation; 2. The expansion agent and water are fluid after reconciliation. During the process of filling the hole, it is easy to produce hydration reaction, heat and vaporization, and uncontrollable punching phenomenon often occurs, and the operator's eyes often hurt.

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