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Wheel-sticking prevention mortar injecting system and method

A kind of mortar and anti-sticking technology, which is applied in the direction of earth cube drilling, wellbore/well parts, earth mover/shovel, etc. It can solve the problem of increased mud adhesion area of ​​mud scraper, change of mud flow characteristics, and ineffective mud block. Removal and other problems, to solve the sticky wheel problem, reduce the concentration, increase the effect of fluidity

Active Publication Date: 2019-12-20
JIANGSU XCMG CONSTR MASCH RES INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In these two patents with application numbers 201320882742.2 and 201710072296.1, when the mud scraper removes mud, the mud at the bottom of the milling wheel groove has been transformed into a viscous paste state, and a large number of sticky particles adhere to the tooth plate of the milling wheel to form mud blocks. The mud clods cannot be effectively removed when using the mud board, and the mud scraper increases the mud adhesion area, and the suspended mud clods stick to each other to form large pieces, which are removed and accumulated at the slag suction port, resulting in a decrease in the slag suction efficiency, and the mud cannot be sucked out in time, making the mud more viscous , mud flow characteristics change

Method used

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  • Wheel-sticking prevention mortar injecting system and method

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Experimental program
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Effect test

Embodiment 1

[0034] like figure 1As shown, an anti-sticking wheel mortar injection system is provided in an embodiment of the present invention, including: a concentration sensor 2 and a mortar injection unit;

[0035] When the concentration sensor 2 detects that the slurry concentration in the working area is greater than the set threshold, the mortar injection unit is started, and the mortar injection unit injects mortar into the working area to reduce the slurry concentration in the working area. body concentration.

[0036] The concentration sensor 2 is generally located near the milling wheel; the working area refers to the deep area at the bottom of the groove; Determine the slump test and ensure that the slump height of the mixed mortar is greater than 200mm, and the particle size of the sand in the mortar is selected to be 0.5mm to 3mm.

[0037] The anti-adhesive wheel mortar injection system in the embodiment of the present invention can be applied to the suction and slag discha...

specific Embodiment approach

[0039] Further, based on the first specific implementation, in the second specific implementation of the embodiment of the present invention, the mortar injection unit further includes a transfer tank 21 and a first pump 22, the transfer tank 21 The inlet is connected to the outlet of the first control valve 23 through the mixer mortar pipe 24 , the inlet of the first pump 22 is connected to the outlet of the transfer tank 21 , and its outlet is connected to the working area through the mortar injection pipe 5 . In order to improve the uniformity of the mortar, the mortar injection unit also includes an agitator 20, and the agitator 20 is arranged in the transfer tank 21;

Embodiment 2

[0042] Based on Example 1, in the embodiment of the present invention, wall protection mud is used as the conveying medium of sand particles. On the premise of ensuring the wall protection effect of milling grooves, the mortar is sprayed into the deep area of ​​the bottom of the groove to reduce the adhesion of the slurry at the bottom of the groove and realize automatic Control the proportion of sand particles and wall protection mud, milling wheel injection mortar, and mortar suction and discharge cycle.

[0043] Specifically, the difference between the embodiment of the present invention and embodiment 1 is:

[0044] The mortar injection unit further includes a sand module and a mud module, the outlets of the sand module and the mud module are both connected to the inlet of the mixer 19 for providing sand and mud to the mixer 19 respectively.

[0045] The mud module includes a slag suction port 3, a third pump 6, a separator 9, a mud pool 7, a second pump 8, and a flow mete...

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Abstract

The invention discloses a wheel-sticking prevention mortar injecting system and method. The wheel-sticking prevention mortar injecting system comprises a concentration sensor and a mortar injection unit; when the concentration sensor detects that the concentration of slurry in a working area is greater than a set threshold value, the mortar injection unit is stared, mortar is injected into the working area by the mortar injection unit, the proportion of non-sticky particles is increased, and the concentration of the slurry in the working area is decreased. Through the construction method for injecting the mortar into the slurry in the working area (such as the groove bottom), the proportion of the non-sticky particles in the slurry at the groove bottom is increased, the concentration of the slurry at the groove bottom is decreased, the inherent characteristics of slurry in a deep sticky formation are changed, it is ensured that the slurry at the groove bottom has the good flowing characteristic, and the efficiency of sucking and discharging of the slurry at the groove bottom by a slag suction opening is improved.

Description

technical field [0001] The invention belongs to the technical field of underground continuous wall construction, and in particular relates to an anti-adhesive wheel mortar injection system and method. Background technique [0002] Diaphragm wall is a new technology widely used and rapidly developed in underground concealed engineering and foundation construction engineering. my country's underground diaphragm wall construction was first applied in Qingdao Danzikou Reservoir in 1958. At that time, the underground diaphragm wall mainly played the role of anti-seepage wall. Later, with the development of technology and the continuous improvement of construction engineering requirements for underground diaphragm walls, underground diaphragm walls have gradually developed to bear vertical loads or composite loads as part of the main force-bearing structure of the project. Double-wheel milling equipment is one of the main equipment for underground diaphragm wall construction at p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F5/14E02D15/04E21B21/00E21B21/06
CPCE02F5/14E02D15/04E21B21/00E21B21/065E02D2250/003Y02W30/91
Inventor 李亮韩冰冰黄建华
Owner JIANGSU XCMG CONSTR MASCH RES INST LTD
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