Reinforced Concrete Beam Demolition Blasting Blasting Hole Charge, Blockage and Slag Pressing Structure and Demolition Blasting Method

Abstract

The invention discloses a charging, blocking and slag pressing structure of demolition blasting blast-holes of a reinforced concrete beam and a demolition blasting method. The demolition blasting method is characterized in that the technical measures of disconnecting stirrups arranged at one side or two sides of the reinforced concrete beam, blocking the blast-holes by using gypsum which is mixed with an adhesion agent and pressing the blast-holes by using water bags are adopted, and thus the contradiction between the demolition blasting effect of the reinforced concrete beam and safety as well as between the demolition blasting effect and environment protection is well solved. The charging, blocking and slag pressing structure and the demolition blasting method, disclosed by the invention, have the beneficial effects that the technical measures are jointly adopted, thus the bounding stress of the stirrups on concrete during blasting is reduced, the blasting and crushing effect is improved, and blasting safety protection and blasting dust control are facilitated; the construction is convenient, the explosive consumption and the post processing and cleaning cost are reduced, and significant economic and environment benefits are obtained.

Description

technical field

[0001] The invention relates to the field of blasting engineering, in particular to a blasting construction method for demolition blasting of reinforced concrete beams, a structure for charging, blocking and slag pressing, and a blasting construction method for demolition of reinforced concrete beams. Background technique

[0002] During urban construction, many reinforced concrete beams (such as temporary support beams for foundation pits) need to be demolished. Blasting technology is an efficient means of demolishing reinforced concrete, but its use in urban environments requires special attention to safety. This requires finding a balance between blasting effect and blasting safety. On the one hand, it is necessary to smash the reinforced concrete beams as much as possible, and on the other hand, it is necessary to minimize the damage to surrounding buildings and the impact on the environment by blasting, so as to achieve safe and environmentally friendly...

Images