JPS60123696A - High pressure crushing method of rock using expansible crushing material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Recently, expanding crushing materials that crack and fracture rock, concrete structures, and the like have come into widespread use by utilizing expansion pressure generated by hydration reactions. However, according to the conventional construction method using expanded crushed materials, it takes a long time for cracks to occur and there is a limit to the expansion pressure that can be generated, so a large amount of expanded crushed materials is used, especially for crushing rock. Insufficient inflation pressure
There were difficulties in workability and economy. The present invention has been made to solve these difficulties, and will be described in detail below with reference to the drawings.

A combustion capsule 4 made of a combustible material and a combustion auxiliary material is loaded into the hole end 3 of a filling hole 2 drilled in a bedrock 1, and then,
A slurry 5 of an expanded crushing material (S-Mite Nato) which generates expansion pressure through a hydration reaction is filled, and a turnip of quicklime is soaked in water and then filled into the opening 6. Then, the quicklime expands due to the aqueous phase reaction, functions to close the mouth and act as a stopper, and promotes the hydration reaction of the slurry in the vicinity of the capsule 7 by the heat of hydration reaction. The high-temperature reaction heat generated by the rapid increase in the aqueous phase reaction of the adjacent slurry further promotes the reaction of the next adjacent slurry, and the reaction sequentially progresses from the slurry at the mouth toward the end of the hole. The high pressure (approximately 300 to 9 f/ca) and high temperature (approximately 300° C.) state changes caused by the aqueous phase reaction of the slurry at the bottom of the hole cause an explosive combustion reaction between the combustible material and the combustible material. As a specific example, flammable materials include kerosene,
Or use light oil and potassium permanganate as a combustion aid (oxidizer). Kerosene or light oil vaporizes and spontaneously ignites at temperatures below 300°C, and potassium permanganate decomposes and generates oxygen at temperatures below 300°C. Further, the mixing ratio of the combustible material and the combustion aiding material is naturally determined by the chemical formula of the reaction. If a small amount of a combustible substance whose ignition temperature is lower than that of kerosene or diesel oil is added as an igniter, the ignition of kerosene or diesel oil will be faster and more reliable.

In addition, thermite is added when a stronger crushing force is required. Thermite burns and generates a high temperature of over 2,000 degrees Celsius, and reacts with the water squeezed out from the slurry at the bottom of the hole to generate explosive high pressure. By loading the combustion capsule containing the contents at the bottom of the hole, which is the most difficult to crush, the expansion pressure of the expanding crushing material is assisted, making it easy and reliable to crush rock, etc.

As is clear from the above explanation, in the conventional construction method using expanded crushed material, cracks did not occur until 1 to 2 days had passed after filling with slurry, whereas in the present invention After filling the slurry, a rapid reaction starts immediately, and the reaction starts from the mouth of the filling hole, so there is no risk of slurry spewing out. It is particularly effective for rock crushing.Work efficiency is improved and the number of filling holes is reduced, which improves economic efficiency.In addition, the construction of the present invention has the advantage of not being subject to legal regulations regarding explosives control. have

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention. -1...
・・・・・・・・・・Rock 2・・・・・・・・・・・・Filling hole 3・・・・・・・・・・・・ Hole end 4・・・・・・・・・・... Combustion capsule 5 ...
・・・・・・Slurry of expanded crushed material 6・・・・・・
・・・・・・Mouth 7・・・・・・・・・Quicklime capsule grass 1
Individual

Claims (1)

[Claims] A combustion capsule made of a combustible material and a combustion auxiliary material is loaded into a filling hole drilled in a rock or concrete structure, and then a slurry of expanded crushed material that generates expansion pressure through a hydration reaction is filled, and then quicklime is added to the filling hole. After the capsule is hydrated, it is filled into the mouth of the hole, and the mouth is closed and stopped by the hydration expansion of the quicklime, and the hydration reaction of the slurry in the vicinity of the quicklime is caused by the heat of the hydration reaction of the quicklime. The reaction heat generated by the hydration reaction of the slurry further promotes the hydration reaction of the adjacent slurry, and this reaction promotion proceeds from the slurry at the mouth side to the hole end side, and the slurry at the hole end. A change in state of high pressure and high temperature causes an explosive combustion reaction between the combustible material and the auxiliary combustion material, and the expansion pressure generated by the hydration reaction of the slurry and the high pressure and high temperature generated by combustion of the combustion capsule cause rock formation. Or a high-pressure crushing method for rock, etc., using an expanding crushing material, which is characterized by causing cracks and fractures in concrete structures, etc.