A blast hole plugging device

Abstract

The invention relates to a blast hole plugging device, which belongs to the technical field of blasting engineering auxiliary devices. The invention includes a positioning structure, an extrusion plug and a fastening bolt. The positioning structure includes an end plate, a central column, a connecting rod and an extrusion strip. One end of the central column is fixed and vertically connected to the center of the end plate, and the other end is provided with a External thread structure, the connecting rod is a plurality of pieces arranged at intervals along the circumference of the central column, one end of the connecting rod is fixedly connected to the end plate, the other end has an outwardly bent convex section, and the extruded bar is along the center There are multiple pieces arranged at intervals in the circumferential direction of the column, and the extrusion strip is arranged at the position between the connecting rods, and there is a fixed connection between the extrusion strip and the positioning structural member; the extrusion plug has a through hole for the central column to pass through, and the connection The inner space enclosed by the rod can allow the extrusion plug to be inserted, and the fastening bolt has a threaded hole adapted to the external thread on the central column. The invention is convenient to operate and has high packing quality assurance.

Description

A blast hole plugging device technical field The present invention relates to a kind of blast hole blocking device, belong to blasting engineering auxiliary device technical field. Background technique [0002] Drilling and blasting is a commonly used technology for tunnel excavation, and is widely used in fields such as water conservancy and hydropower, mining, and transportation. exploding In the process of blasting construction, filling the blast hole can increase the pressure of the detonation gas on the hole wall and prolong the pressure effect. Time, thereby greatly improving the degree of rock bursting and throwing distance, thereby improving the blasting effect. In current projects, it is often Generally, materials such as mud chips are used to fill the blast hole, which is inconvenient to operate, and the quality of the filling is poor. SUMMARY OF THE INVENTION Technical problem to be solved by this invention is: provide a kind of blast hole blocking devic...

AI Technical Summary

Problems solved by technology

At present, local materials are often used in projects, and mud chips and other materials are generally used as blasting mud to fill blastholes, which is inconvenient to operate and poor in quality assurance of filling.

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