A support hydraulic device and its working method in the construction of highly flexible mortar working face

A technology of hydraulic device and working face, which is applied to mine roof supports, earth-moving drilling, mining equipment, etc., can solve the problems of poor lateral force resistance of supports, poor working environment safety, low moving speed, etc. Balanced load and impact load, reduced long-term close-range operation, and high degree of automation

Active Publication Date: 2019-02-26
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the construction process, the end area of ​​the fully mechanized mining face is the intersection area of ​​the working face and the transportation lane of the working face, the roof pressure is high, the mine pressure is complicated, there are many equipment arrangements, and the working space is narrow
For a long time, the method of multi-point intensive support of single pillars has been adopted, which is complex, labor-intensive for operators, insufficient support force, low moving speed, and poor safety of the working environment
[0004] In addition, the main structure of the hydraulic support currently on the market is complex, and the overall performance of the support against lateral force is very poor. When a lateral force acts on this support, it often causes the support to be skewed, until it cannot work normally, and even causes danger; secondly The degree of automation is not high, and manual close-range operation is required, which not only increases labor intensity, but also increases safety risks

Method used

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  • A support hydraulic device and its working method in the construction of highly flexible mortar working face
  • A support hydraulic device and its working method in the construction of highly flexible mortar working face
  • A support hydraulic device and its working method in the construction of highly flexible mortar working face

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Manufacture protective cover 5 of the present invention according to the following steps, and in parts by weight:

[0050] Step 1: Add 3750 parts of ultrapure water with a conductivity of 4.32μS / cm into the reactor, start the agitator in the reactor at a speed of 95rpm, start the heating pump, and raise the temperature in the reactor to 74°C; add in sequence 88 parts of N-(4-hydroxy-3-methoxybenzyl)-8-methylnonanamide, 8-methyl-N-[(4-hydroxy-3-methoxyphenyl)-methyl] -95 parts of -(trans)-6-nonenylamide, 47 parts of methyl 2-[4-(2,4-dichlorophenoxy)phenoxy]propionate, stir until completely dissolved, and adjust the pH 3.6. Adjust the speed of the agitator to 116rpm, the temperature is 114°C, and the esterification reaction takes 14 hours;

[0051] Step 2: Take 45 parts of 5-hydroxy-4-(p-hydroxybenzyl)-3',3-dimethoxybibenzyl, 2,2'-[(3,3'-dichloro-1,1 77 parts of '-biphenyl-4,4'-diyl)diazo]bis[N-(4-chloro-2-methylphenyl)-3-oxo]butanamide were pulverized, and the particle...

Embodiment 2

[0056] Manufacture protective cover 5 of the present invention according to the following steps, and in parts by weight:

[0057] Step 1: Add 4760 parts of ultrapure water with a conductivity of 7.46μS / cm into the reactor, start the agitator in the reactor at a speed of 139rpm, start the heating pump, and raise the temperature in the reactor to 145°C; add in sequence 269 ​​parts of N-(4-hydroxy-3-methoxybenzyl)-8-methylnonanamide, 8-methyl-N-[(4-hydroxy-3-methoxyphenyl)-methyl] 158 parts of -(trans)-6-nonenylamide, 110 parts of methyl 2-[4-(2,4-dichlorophenoxy)phenoxy]propionate, stir until completely dissolved, and adjust the pH 8.9, adjust the speed of the agitator to 168rpm, the temperature is 149°C, and the esterification reaction is 28 hours;

[0058] Step 2: Take 71 parts of 5-hydroxy-4-(p-hydroxybenzyl)-3',3-dimethoxybibenzyl, 2,2'-[(3,3'-dichloro-1,1 103 parts of '-biphenyl-4,4'-diyl)diazo]bis[N-(4-chloro-2-methylphenyl)-3-oxo]butyramide were pulverized, and the partic...

Embodiment 3

[0063] Manufacture protective cover 5 of the present invention according to the following steps, and in parts by weight:

[0064] Step 1: Add 4250 parts of ultrapure water with a conductivity of 5.92μS / cm into the reactor, start the stirrer in the reactor at a speed of 115rpm, start the heating pump, and raise the temperature in the reactor to 110°C; add in sequence 178 parts of N-(4-hydroxy-3-methoxybenzyl)-8-methylnonanamide, 8-methyl-N-[(4-hydroxy-3-methoxyphenyl)-methyl] 126 parts of -(trans)-6-nonenylamide, 78 parts of methyl 2-[4-(2,4-dichlorophenoxy)phenoxy]propionate, stir until completely dissolved, and adjust the pH 6.2. Adjust the speed of the agitator to 141rpm, the temperature is 131°C, and the esterification reaction takes 21 hours;

[0065] Step 2: Take 62 parts of 5-hydroxy-4-(p-hydroxybenzyl)-3',3-dimethoxybibenzyl, 2,2'-[(3,3'-dichloro-1,1 88 parts of '-biphenyl-4,4'-diyl)diazo]bis[N-(4-chloro-2-methylphenyl)-3-oxo]butanamide were pulverized, and the partic...

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PUM

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Abstract

The invention discloses a support hydraulic device in high-flexibility mortar working face construction and a working method thereof. The support hydraulic device consists of a base, hydraulic cylinders, a bearing surface, pressure sensors, protection covers and a support connecting rod, wherein the hydraulic cylinders are arranged in the base; four hydraulic cylinders are provided and connected with the base through a hinge; the support connecting rod is arranged on one side of the base and connected with the base through a hinge; the bearing surface is positioned above the base; the bottom surface of the base is parallel to the upper surface of the bearing surface; the pressure sensors and the protection covers are arranged on the bearing surface; and two pressure sensors and two protection covers are provided. The support hydraulic device in high-flexibility mortar working face construction has the advantages of simple structure, high automation degree and easiness in assembly and disassembly; with high strength and stable performance, the device can effectively bear unbalanced load and impact load; and with a wireless control function, the device effectively reduces the long-time near operations of workers and greatly improves the working safety.

Description

technical field [0001] The invention belongs to the field of tunnel equipment, and in particular relates to a supporting hydraulic device and a working method thereof in the construction of a highly flexible mortar working face. Background technique [0002] With the further strengthening of basic engineering, urban rail transit and railway transportation have become important means of transportation for people to travel. In the construction process of rail transit and railway transportation, large-section tunnels have always been the focus and difficulty in engineering construction, especially open-cut tunnels, because the tunnel lining requires one-time molding, and the requirements for inner surface molding quality and appearance quality are relatively high. high. Therefore, during the construction process, there are high requirements for the strength, stiffness, overall stability of the support system, dimensional accuracy after the tunnel is formed, and smooth connecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D23/16
CPCE21D23/0004E21D23/16
Inventor 张志军曹露春
Owner XUZHOU UNIV OF TECH
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