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Underground double liquid grouting process and underground double liquid grouting machine thereof

A double-fluid grouting and grouting technology, which is applied in the direction of wellbore/well components, shaft equipment, wellbore lining, etc., can solve problems such as difficult maintenance and overhaul, poor grouting effect, and complicated pipeline connections, and achieve the elimination of grout The effect of plugging holes and good grouting effect

Active Publication Date: 2012-12-12
SHANDONG UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

After the single-liquid cement slurry is injected, it overflows quickly with the water, and the grouting effect is poor
[0003] Some units use the double-pipe grouting process, which is to use two conveying pipelines in parallel to achieve the purpose of double-liquid grouting, but the pipeline connection is complicated and difficult to maintain and overhaul

Method used

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  • Underground double liquid grouting process and underground double liquid grouting machine thereof
  • Underground double liquid grouting process and underground double liquid grouting machine thereof
  • Underground double liquid grouting process and underground double liquid grouting machine thereof

Examples

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specific Embodiment

[0096] On-site cement-sodium silicate (C-S) two-liquid proportion solidification test is described as follows:

[0097] It is difficult to implement the traditional two-liquid grouting process in the water gushing treatment of the auxiliary second main road of Xinjulong Mining Co., Ltd. Because the grouting holes for construction are relatively deep (most of the holes are more than 60m), when the traditional two-liquid grouting process is used for grouting, the mixed grout has not had time to enter the water-conducting fissures in the borehole. Solidification occurs, which causes hole plugging accidents during grouting. Aiming at the characteristics of water gushing in Fuer Daxiang, cement-sodium silicate slurry was selected, and the ratio test at room temperature (25°C) was done on site. The temperature environment was also expanded, and the solidification time and strength of cement water glass at different temperatures of 35°C and 50°C were tested respectively, and the fea...

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Abstract

The invention relates to an underground double liquid grouting process, which comprises the following steps: (1) making preparations for implementing the double liquid grouting process and judging whether the grouting conditions are met; and (2) implementing the double liquid grouting process. The invention also discloses an underground double liquid grouting machine. An underground double liquidgrouting machine comprises an inner grouting tube and an outer grouting tube which are nested together, wherein the inner and outer grouting tubes are two independent airtight tubes. According to theinvention, a drill rod and a drill hole water-stopping casing pipe are respectively used as a grout conveying pipeline, the double pipeline grouting is realized, and the position for mixing two grouts and the running time of the grouts in the drill hole after the grouts are mixed are both adjusted by changing the depth of the grouting tubes in the drill hole, thus achieving the purpose of adjusting the coagulation time of the double grouts in the deeper drill hole and eliminating the disastrous effect of blocking the drill hole with the grouts, thereby ensuring a better grouting effect.

Description

technical field [0001] The invention relates to a water shutoff process and device applied under dynamic water conditions in underground mines or tunnels, in particular to an underground double-liquid grouting process and an underground double-liquid grouting device. Background technique [0002] At present, it is used for grouting water blocking after water discharge in mines, transportation, etc., especially when the water outlet channel is short, the water pressure is high, and the flow rate is fast, the grouting plugging material is required to have rapid solidification, and the proportion can be determined according to the needs. adjustment requirements. However, at present, the plugging of the outlet water is generally carried out by polymer materials or cement slurry, and the orifice mixing method. When the borehole is deep, the mixing method of the orifice will make the two kinds of grout mixed in the borehole run for a long distance and run for a long time, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/13E21B21/00E21D11/38E21D11/04
Inventor 李术才潘光明李海燕张庆松韩伟伟张霄刘人太张伟杰王凤刚李志鹏
Owner SHANDONG UNIV
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