Blasting method in reinforcing and reconstructing construction of hydraulic engineering

Abstract

The invention relates to a blasting method in a reinforcing and reconstructing construction of hydraulic engineering. Partial structures in an original building need to be necessarily disassembled during reinforcing and reconstructing engineering construction, and blasting demolition can be adopted on the partial structures. The blasting of a demolition body part mainly adopts a control blasting technology. The control blasting is used for reasonably determining the positions, the hole distance, the hole depths of blasting holes, the explosive amount and an initiation manner according to certain technological measures, strictly controlling the blasting energy and the blasting scale, and enabling the blasting sound, the blasting vibration, a destruction area and a scattering degree range and a dumping direction of broken objects to be controlled within a specified limit. The influence on part structures is reserved when the original building is blasted, the judgment can be carried out by adopting a sound wave detecting and vibration monitoring combining method, blasting parameters can be adjusted according to a detecting result, and the safety of an engineering structure can be ensured.

Description

technical field [0001] The patent of the present invention relates to a blasting method in the reinforcement and reconstruction of water conservancy projects. Background technique [0002] With the development of the economy and the progress of the society, a large number of water conservancy projects constructed at the initial stage have their own defects and potential safety hazards, resulting in the loss of some functions. At the same time, they cannot meet the needs of rapid economic development, and the original projects must be rebuilt. , expansion and reinforcement. In these technical transformation projects, some of the functions of the original buildings need to be retained, and at the same time, the buildings that have lost their functions in the original structures need to be demolished, which has resulted in the necessary demolition of the original structures, and the retained structural parts are still in use. Cannot be destroyed. [0003] prior art solutions ...

AI Technical Summary

Problems solved by technology

[0010] 1) The labor intensity is high, and the dust pollution generated by the pneumatic equipment is large, which affects the health of the operating workers;

[0011] 2) Low work efficiency and high construction cost

[0012] 3) There are many potential safety hazards and risks in construction

[0013] 4) Only suitable for dismantling of sporadic work of small components

[0014] (2) Disadvantages of the second type of mechanical removal:

[0015] 1) Due to the reasons of the excavator itself, mechanical demolition is only suitable for some structures with open surroundings, low demolition body height and bearing the weight of the excavator

[0016] 2) Loud noise and bad environmental pollution;

[0017] 3) It is easy to cause damage to the retained structure

[0018] (3) Disadvantages of the third type of static crushing and demolition:

[0019] 1) The reaction time of the expansion agent is long, the destructive force generated by the expansion is limited, the construction progress is slow, the construction period is long, and the construction cost is high

[0020] 2) Broken bodies damaged after expansion need to be chiseled manually, and there are many hidden dangers in construction safety, and construction safety cannot be guaranteed

[0021] 3) Since the damage caused by the expansion agent is irregular, it is easy to cause damage to the retained structural part

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