Underground two-fluid grouting device
A dual-liquid grouting and grouting technology, which is used in vertical shaft equipment, wellbore lining, underground chambers, etc., can solve the problems of difficult maintenance and repair, poor grouting effect, complicated pipeline connections, etc., to eliminate the slurry plugging holes. , Good grouting effect
Active Publication Date: 2015-04-08
SHANDONG UNIV
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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 double-pipe grouting, that is, two conveying pipelines are used for parallel grouting to achieve the purpose of double-liquid grouting, but the pipeline connection is complicated and difficult to maintain and repair
Method used
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[0050] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0051] Such as Figure 2-Figure 4 As shown, the downhole double-fluid grouting device includes a grouting inner pipe and a grouting outer pipe nested together, and the grouting inner pipe and the grouting outer pipe are two independent closed pipes.
[0052] The grouting inner pipe includes high-pressure rubber hose joint I1, short pipe I2, sealing joint 20, drill pipe 7 and injector 10 connected in sequence. The aforementioned components are connected to form a closed grouting pipeline; Stop valve I14.
[0053] The grouting outer pipe includes a water-stop casing 6, the front end of the water-stop casing 6 is connected to the flange II5, the front end of the flange II5 is connected to one end of the high-pressure valve 4, the other end of the high-pressure valve 4 is connected to the sealing flange I3, and the sealing flange I3 A sealing joint 20 is ...
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The invention relates to an underground two-fluid grouting device comprising a grouting inner tube and a grouting outer tube which are nested together, wherein the grouting inner tube and the grouting outer tube are two independent closed pipelines. The grouting inner tube comprises a high-pressure rubber hose joint I, a short tube I, a seal joint, a drill rod and an injector which are sequentially connected, wherein the components are connected to form a closed grouting pipeline, and the short tube I is provided with a check valve I. According to the invention, the drill rod and a drill hole water stopping sleeve are used for being respectively taken as a fluid conveying pipeline, double-tube grouting is realized, depth of a grouting tube in a drill hole is changed for adjusting a position at which two fluids are mixed and the operation time of the mixed fluid in the drill hole, and the aims of adjusting two-fluid solidification time in a deeper drill hole and eliminating a bad result that the drill hole is blocked by the fluid are achieved, so that a better grouting effect is guaranteed.
Description
technical field [0001] The invention relates to a water shutoff device applied under the condition of dynamic water in mines or tunnels, in particular to an underground double-fluid 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 grout is easy to solidify in the borehole before being pushed out an...
Claims
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IPC IPC(8): E21D11/38E21D11/10
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