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Hydraulic auxiliary splitting device and method for rock breakage

A hydraulic and equipment technology, applied in the hydraulic splitting field of rock crushing, which can solve problems such as dust pollution, noise pollution, and slow expansion speed

Pending Publication Date: 2019-11-01
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Explosive blasting is generally used in traditional rock mining and crushing. However, there are many uncertain factors in blasting construction, such as the amount of explosives that does not meet the standards, blasting holes that are unqualified, and deviations in the blasting network. Flying stones and other blasting hazards, and blasting will also cause dust pollution, noise pollution, vibration hazards, etc.
[0003] In addition, in some rock areas that are not suitable for blasting mining, expansion agent fracturing is usually used for mining. Specifically, blast holes are opened in advance in the fracturing area, and expansion agent is added to the hole, and the expansion effect of the expansion agent is used to make the rock Cracking, the disadvantage of this method is that the expansion rate of the expansion agent is slow, and it takes a long time to wait, especially in cold weather, the expansion rate is slower, which seriously affects the progress of the project

Method used

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  • Hydraulic auxiliary splitting device and method for rock breakage
  • Hydraulic auxiliary splitting device and method for rock breakage
  • Hydraulic auxiliary splitting device and method for rock breakage

Examples

Experimental program
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Effect test

Embodiment 1

[0049] The hydraulically assisted splitting device provided in this embodiment includes a splitter 101 without a sealing ring 102 . The size of the splitter 101 is set to be smaller, which is convenient to use in the laboratory. It is specifically turned from round steel with a height of 40mm. The diameter of the thicker end of the splitter 101 is 4cm, and the diameter of the end that is turned into a tapered shape is 4cm. 3.5cm, and the height of the tapered part is about 0.8cm, which is 1 / 5 of the height of the entire splitter 101 . The test concrete block is 30cm long, 30cm wide, and 15cm high, and a hole is pre-drilled at 1 / 3 and 2 / 3 of the diagonal, the diameter of the hole is 3.6cm, and the depth is 8cm. After the hole is filled with water, use the splitter 101 provided by this embodiment to block, and then use a hammer to knock and impact the splitter 101, so that the concrete block can be easily broken.

Embodiment 2

[0051] The hydraulically assisted splitting device provided in this embodiment includes a splitter 101 and a sealing ring 102. The splitter 101 is the same as that in Embodiment 1, and the sealing ring 102 is a small ring made of memory alloy. The strength of the tested concrete was increased compared with that of Example 1, and the concrete was 50 cm long, 50 cm wide, and 10 cm high. Open 4 holes evenly at a position 15cm away from one side of the test concrete, each hole has a diameter of 3.6cm, a depth of 7.5cm, and a hole spacing of 10cm. Fill the hole with water, use the splitter 101 and sealing ring 102 provided in this embodiment to block, use a hammer to impact, and the concrete splits smoothly as expected.

Embodiment 3

[0053] The hydraulically assisted splitting device provided in this embodiment includes a splitter 101 without a sealing ring 102 . The splitter 101 is modified on the basis of the splitter 101 of embodiment 1, and the first end of the splitter 101 is continued to be turned, so that its cone angle becomes smaller, and it is easier to block in the concrete cavity; the selected concrete The same as the concrete material in Example 2, all of which are high-strength concrete, 3 holes are uniformly opened at a distance of 15cm from one side of the concrete, each hole has a diameter of 3.6cm, a depth of 7.5cm, and a hole spacing of 12.5cm , fill the hole with colloidal water, block it with a splitter 101, and then use a hammer to impact it. It is found that the concrete is easier to crack than in Example 1. Although the hole spacing is increased compared to Example 1, due to The modified splitter 101 is more likely to block the water in the hole, and the effect is better under impac...

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Abstract

The invention discloses a hydraulic auxiliary splitting device for rock breakage. The hydraulic auxiliary splitting device for rock breakage comprises a columnar splitter used for blocking a hole mouth of a pre-formed hole in rock, wherein the pre-formed hole is filled with a pressure solution, and a first end of the splitter is conical and stretches into the hole mouth. According to the hydraulicauxiliary splitting device, the splitter blocks the pre-formed hole filled with the pressure solution, so that the impact force applied to the splitter by a mechanical device is transmitted to all portions in the pre-formed hole through the pressure solution, and the pre-formed hole cracks from a weak portion to achieve a breakage effect; no explosive is used, so that various explosion dangers are prevented; waiting for expansion with an expanding agent is not needed, so that the efficiency is improved, and the construction progress is not affected. The invention further discloses a hydraulicsplitting method for rock breakage. The hydraulic splitting method is applied to the hydraulic auxiliary splitting device and can avoid explosion dangers and improve the efficiency.

Description

technical field [0001] The invention relates to the technical field of rock crushing, more specifically, to a hydraulically assisted splitting device for rock crushing, and also to a hydraulic splitting method for rock crushing. Background technique [0002] Explosive blasting is generally used in traditional rock mining and crushing. However, there are many uncertain factors in blasting construction, such as the amount of explosives that does not meet the standards, blast holes that are unqualified, and deviations in the blasting network. Flying stones and other blasting hazards, and blasting can also cause dust pollution, noise pollution, vibration hazards, etc. [0003] In addition, in some rock areas that are not suitable for blasting mining, expansion agent fracturing is usually used for mining. Specifically, blast holes are opened in advance in the fracturing area, and expansion agent is added to the hole, and the expansion effect of the expansion agent is used to make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C37/12
CPCE21C37/12
Inventor 马宏昊王奕鑫沈兆武陈继平姚象洋
Owner UNIV OF SCI & TECH OF CHINA
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