Shield tail seal grease of shield excavating machine

A shield tail seal and tunneling machine technology, which is applied in the field of sealing grease, can solve the problems of easy slurry leakage and high cost, and achieve the effects of construction cost saving, low price and high skeleton strength

Active Publication Date: 2010-05-12
SHANGHAI CIFU NEW BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many oil manufacturers in China, but there are common problems of grout leakage and large dosage in sandy soil or crossing rivers and lakes and other poor soil conditions. For example, the dosage in general soil layer is usually 25kg / m (the diameter of the shield machine is about 6.4m), but it may use 70-80kg / m in sandy soil
However, products imported from abroad, such as those imported from France or Japan, are of high quality, but they have a problem of high cost: their price is usually twice as expensive as that of domestic shield tail sealing grease. It is 34 yuan / kg, and its dosage is not less than that of domestic shield tail sealing grease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Castor oil 90kg

[0021] T603 75kg

[0022] White carbon black and heavy calcium carbonate mixture 290kg

[0023] Thickener 25kg

[0024] Antifungal agent 6.0kg

[0025] Dispersant 4.0kg

[0026] Bamboo fiber 10kg

[0027] The preparation process is as follows: First, mix 90kg of castor oil, 75kg of T603, 25kg of thickener, 6.0kg of antifungal agent, and 4.0kg of wetting and dispersing agent in a mixer at room temperature, and then add 290kg of The mixture of white carbon black and heavy calcium carbonate is mixed evenly, and finally 10kg of bamboo fiber is added, and fully stirred and kneaded for not less than 90 minutes.

example 2

[0029] Castor oil 125kg

[0030] T603 78.5kg

[0031] Bentonite and superfine calcium carbonate mixture 250kg

[0032] Thickener 25kg

[0033] Antifungal agent 4.0kg

[0034] Dispersant 2.5kg

[0035] Bamboo fiber 15kg

[0036] The preparation process is as follows: First, mix 125kg of castor oil, 78.5kg of T603, 25kg of thickener, 4.0kg of antifungal agent, and 2.5kg of wetting and dispersing agent in a mixer at room temperature, and then add them in batches 250kg of bentonite and superfine calcium carbonate mixture are mixed evenly, and finally 15kg of bamboo fiber is added, and fully stirred and kneaded for no less than 90 minutes.

example 3

[0038] soybean oil 75kg

[0039] T613 85kg

[0040] White carbon black and mica powder mixture 250kg

[0041] Thickener 50kg

[0042] Antifungal agent 5.0kg

[0043] Dispersant 5.0kg

[0044] Bamboo fiber 30kg

[0045] The preparation process is as follows: First, mix 75kg of soybean oil, 85kg of T613, 50kg of thickener, 5.0kg of antifungal agent, and 5.0kg of wetting and dispersing agent in a mixer at room temperature, and then add 250kg of Mix the white carbon black and mica powder mixture evenly, and finally add 30kg of bamboo fiber, and fully stir and knead for no less than 90 minutes.

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Abstract

The invention discloses a shield tail seal grease of a shield excavating machine, which is used for passing through sand soil, rivers and lakes in the process of excavating construction of an underground project. The shield tail seal grease is combined by the following raw materials in parts by weight: 15-25 parts of plant oil, 15-25 parts of viscosity index modifying agents, 50-60 parts of stuffing, 5-10 parts of thickening agent, 0.8-1.2 parts of mildewproof agents, 0.5-1.0 part of wet dispersing agents and 2-6 parts of bamboo fibres. The seal grease has good seal performance and pumping ability and no pollution to the environment, can particularly play a favorable seal role in the sand soil or a deeper soil layer with more water content and solve the problem of easy slurry leakage or large dosage in the sand soil, which commonly exists in the grease in the current market.

Description

technical field [0001] The invention relates to a sealing grease, in particular to a shield tail sealing grease for a shield boring machine. technical background [0002] At present, with the development of domestic infrastructure, subway construction is in full swing, and tunnel shield excavation construction is in the ascendant in large and medium-sized cities in China. After the tunnel construction in the past few years, the construction technology has been greatly improved. In terms of project planning and site selection, due to the needs of urban development, more and more tunnels are deeper than the previous tunnels in terms of buried depth, and there are also more and more tunnels. More tunnels will pass through rivers and lakes of all sizes in the country. [0003] For shield tunneling construction, the soil quality encountered will become more and more complex. In the case of high moisture content and high permeability of the soil layer, the requirements for the gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N40/34C10N50/10
Inventor 陈雪松
Owner SHANGHAI CIFU NEW BUILDING MATERIALS CO LTD
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