Static blasting method

Abstract

The invention discloses a static blasting method. The static blasting method comprises the following steps of: (a) preparing construction; (b) premixing breaking agents in the field: (1) determining the using quantity of raw materials; (2) weighing 1,000 grams of breaking agents by using a balance, pouring the breaking agents into a glass measure cup with the volume of 3,000ml, measuring water with the designed quantity by using a measuring cylinder, slowly pouring the water into the measuring cup, uniformly stirring the mixture by using a glass bar, and simultaneously recording the initial volume of the breaking agents; and (3) standing and observing for 12 to 15 minutes, adding inhibitor in the mixture if the volume of the freely expanded breaking agents is 2.5 times the initial volume of the breaking agent within 12 minutes, adding accelerant in the mixture if the volume of the freely expanded breaking agents is not 2.5 times the initial volume of the breaking agents after 15 minutes, finishing standing if the volume of the freely expanded breaking agents is 2.5 times the initial volume of the breaking agents after the breaking agents are freely expanded within 12 to 15 minutes, and simultaneously recording the inhibitor and the accelerant; (c) distributing and drilling holes, and preparing the breaking agents according to the premixing proportion; (d) filling and pouring; (e) keeping warm; (f) beginning to break; and (g) removing rock ballast.

Description

technical field [0001] The invention belongs to the technical field of blasting, in particular to a static blasting method. Background technique [0002] At present, the success rate of static blasting in the field is less than 30%, which seriously restricts the popularization and application of static blasting. And the reaction time and expansion rate are very different under different water quality, water temperature and air temperature conditions, resulting in unstable effect, especially the impact of water quality on the breaking agent is particularly large, and it is difficult to obtain suitable ones in blasting construction sites. The water source will also cause the blasting effect to be affected. At the same time, unqualified raw materials of manufacturers will also lead to unsuccessful blasting. [0003] There are two extremes in the existing blasting. One is that the blasting time is too short (within half an hour). If the crushing time is too short, the water wi...

AI Technical Summary

Problems solved by technology

[0002] At present, the success rate of static blasting in the field is less than 30%, which seriously restricts the popularization and application of static blasting. And the reaction time and expansion rate are very different under different water quality, water temperature and air temperature conditions, resulting in unstable effect, especially the impact of water quality on the breaking agent is particularly large, and it is difficult to obtain suitable ones in blasting construction sites. water source, which will affect the blasting effect

[0003] There are two extremes in the existing blasting. One is that the blasting time is too short (within half an hour). If the crushing time is too short, the water will not fully react with the quicklime and easily cause punching, which threatens the safety of personnel and equipment. The time is too long (12-24 hours), relatively safe, but due to the long reaction time, the efficiency is low