CN1277023C

CN1277023C - Method for treating depression watertight in hydraulic engineering by employing yellow mud grout

Info

Publication number: CN1277023C
Application number: CN 200410085824
Authority: CN
Inventors: 葛扬安
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-20
Filing date: 2004-10-20
Publication date: 2006-09-27
Anticipated expiration: 2024-10-20
Also published as: CN1629406A

Abstract

The present invention relates to a method for treating depression and water leakage in hydraulic engineering by employing yellow mud grout, particularly to the treating method for depression and water leakage in hydraulic engineering. The present invention is characterized in that the method comprises the following four steps: the arrangement of grout holes and hole manufacture, the preparation of yellow mud grout liquid, grout devices and the arrangement and grouting. After the yellow mud grout is used for treatment, a layer of hard yellow mud is generated between a grouted stone bottom board and a foundation; the yellow mud is also filled in gaps of silty soil and sandy soil with the thickness of 5 meters from shallow parts to deep parts with gradual reduction. The present invention enhances the compactness and the bearing capacity of the soil, reduces the infiltration coefficient of the soil, and achieves the purposes of reinforcing the foundation and preventing depression and water leakage.

Description

Handle the depression of hydraulic engineering and the method for leaking with thick loess grouting

Technical field:

A kind of processing method that the present invention relates to the depression of hydraulic engineering and leak.

Background technology:

The hydraulic engineering particularly soil under the embankment canal dike is mainly silt and sandy loam, the compressibilty height, and water permeability is strong, is easy to take place depression and causes canal end liner course by drawing crack, causes the crack to leak.Existing two alternatives: the one, the reinforced concrete floor of overlay 40 cm thicks needs cement, steel on barrier sheet at the bottom of the canal, invests very big.The 2nd, subsidize with glass wool cloth and epoxy resin.But large tracts of land is subsidized difficulty, and the glass wool cloth long term exposure that posts is easily aging in atmosphere, also must handle after aging again.

Summary of the invention:

The objective of the invention is to overcome above deficiency and provide a kind of cost near low, the yellow mud consolidated subsoil utilizing, the processing method of preventing depression and leaking.

The present invention is achieved by the following technical solution: handle the depression of hydraulic engineering and the method for leaking with thick loess grouting, its major technique feature is that this method may further comprise the steps: one, the layout of grout hole and pore-creating: grout hole is arranged to quincunx, first, second and third round all is positioned on the crack, and array pitch and pitch-row all are 4～5 meters; Grout hole is to pass the lining cutting base plate with the 2.54cm iron pipe, gos deep into 20 centimetres on ground again, exposes 10 centimetres, is connected with grout pipe; Two, the preparation of yellow mud slurries: the preparation slurries to select the yellow mud that clay is many, coarse grain is little, its grating is: particle diameter less than 0.005 millimeter account for 42%, 0.005～0.05 millimeter account for 34%, 0.05～2 millimeters account for 24%, organic content is less than 1%; The yellow mud of preparation divides two kinds: the concentration of slurry 1.15 that gravitational grouting is used, the proportioning of water, yellow mud, cement are 70: 28: 2; Concentration of slurry with the grouting machine perfusion is 1.2, and the proportioning of water, yellow mud, cement is 70: 27: 3; Three, grouting equipment and layout thereof: the equipment that irritating yellow mud needs is water pump, reservoir, beater, pulp storage tank, join stock tank, grouting machine, pressure meter, mesh are 1 * 1,2 * 2 millimeter iron wire cloth, diameter is rubber tube and several valve of 5.08cm, reservoir, beater, pulp storage tank, join stock tank, grouting machine from high to low order arrange, the outlet mounted valve of beater and pulp storage tank and filtration iron wire cloth, join the stock tank outlet threeway is installed, one is connected with the gravitational grouting rubber tube, be communicated with grout hole again, as gravitational grouting; The other end is communicated with grouting machine, the grouting of can pressurizeing; Four, grouting: use earlier gravitational grouting, gravitational grouting pipe and grout hole are connected, pressure is controlled at below 0.6 kg/cm, pours into; After grout hole does not advance slurry, use the grouting machine enhancing perfusion again, pressure is controlled at below 1.2 kg/cm; When pressure during in 1.2 kg/cm, grout hole no longer advances slurry, and slurry promptly comes to an end; Before grouting, be with the crack cutter wash clean of canal end liner course, crack is mended the jail with No. 80 mortars, big seams with No. 150 concrete.

After handling through thick loess grouting, between cemented rock base plate and ground, tied the hard yellow mud of one deck, in the space that reaches 5 meters thick silts and sandy loam deeply also filling yellow mud, from shallow to deep, reduce gradually.Improved the compactness and the bearing capacity of soil, reduced the soil permeability coefficient, the purpose of reached consolidated subsoil, preventing depression and leak.

Description of drawings:

Fig. 1 is the grout hole arrangement diagram;

Fig. 2 arranges schematic diagram for grouting equipment.

The specific embodiment:

As shown in Figure 1, the layout of first step grout hole and pore-creating: grout hole 13 is arranged to quincunx, and first, second and third round all is positioned on the crack 14, and array pitch and pitch-row all are 4～5 meters.Grout hole is to pass the lining cutting base plate with the 2.54cm iron pipe, gos deep into 20 centimetres on ground again, exposes 10 centimetres, so that be connected with grout pipe.Before being grouting, be with the crack cutter wash clean of canal end liner course, crack is mended the jail with No. 80 mortars, big seams with No. 150 concrete.

Second the step be the preparation of yellow mud slurries: the preparation slurries to select the yellow mud that clay is many, coarse grain is little, its grating is: particle diameter less than 0.005 millimeter account for 42%, 0.005～0.05 millimeter account for 34%, 0.05～2 millimeters account for 24%, organic content is less than 1%; The yellow mud of preparation divides two kinds: the concentration of slurry 1.15 that gravitational grouting is used, the proportioning of water, yellow mud, cement are 70: 28: 2; Concentration of slurry with the grouting machine perfusion is 1.2, and the proportioning of water, yellow mud, cement is 70: 27: 3.The step of preparation slurries is by proportioning quantitative water and yellow mud to be dropped into beater tub earlier, makes a call to 10 minutes just pulpings approximately, and the process mesh is after 2 * 2 millimeters iron wire cloth filters, and flows in the pulp storage tank to store.When using slurry, stir with six tooth harrows earlier and spare, open valve, the process mesh is that 1 * 1 millimeter iron wire cloth filters, and flows into and joins stock tank, adds No. 400 quantitative cement by proportioning again and mixes thoroughly, promptly is made into the slurries of perfusion.Yellow mud wants matter pure, must filter impurity in the yellow mud and coarse granule, and concentration is measured with hydrometer.

As shown in Figure 2, the 3rd step grouting equipment and layout thereof: the equipment that irritating yellow mud needs is water pump, reservoir, beater, pulp storage tank, join stock tank, grouting machine, pressure meter, mesh are iron wire cloth 5 and 2 * 2 millimeters iron wire cloths 3 of 1 * 1 millimeter, and diameter is rubber tube and several valve of 5.08cm.Beater is homemade in the building site, the circular wood tube that high 1.2 meters, diameter is 1.1 meters, and interior dress vertical shaft is equipped with four iron blades on the axle, uses motor drives.Grouting machine is common grouting machine, is communicated with machinery grouting rubber tube 10.Pulp storage tank with join stock tank and become with brick, barnacle.The grouting place is chosen on the hillside, joins stock tank and is higher than that 7 distances are 7 meters at the bottom of the canal, enables gravitational grouting.Reservoir 1, beater 2, pulp storage tank 4, join stock tank 6, grouting machine 8 from high to low order arrange, the outlet mounted valve of beater and pulp storage tank and filter iron wire cloth is joined the stock tank outlet threeway is installed, and one is connected with gravitational grouting rubber tube 11, be communicated with grout hole again, as gravitational grouting; The other end is communicated with grouting machine, the grouting of can pressurizeing.Also have piece stone and concrete lining course 12 among the figure.

The 4th step was grouting: use earlier gravitational grouting, gravitational grouting pipe and grout hole are connected, pressure is controlled at below 0.6 kg/cm with pressure meter 9, pours into; After grout hole does not advance slurry, use the grouting machine enhancing perfusion again, pressure is controlled at below 1.2 kg/cm; When pressure during in 1.2 kg/cm, grout hole no longer advances slurry, and slurry promptly comes to an end;

This handles the depression of channel with thick loess grouting and the method for leaking is equally applicable to handle the depression and the seepy question of other all hydraulic engineerings.

Claims

1, a kind of with the depression of thick loess grouting processing hydraulic engineering and the method for leaking, it is characterized in that this method may further comprise the steps: one, the layout of grout hole and pore-creating: grout hole is arranged to quincunx, first, second and third round all is positioned on the crack, and array pitch and pitch-row all are 4～5 meters; Grout hole is to pass the lining cutting base plate with the 2.54cm iron pipe, gos deep into 20 centimetres on ground again, exposes 10 centimetres, is connected with grout pipe; Two, the preparation of yellow mud slurries: the preparation slurries to select the yellow mud that clay is many, coarse grain is little, its grating is: particle diameter less than 0.005 millimeter account for 42%, 0.005～0.05 millimeter account for 34%, 0.05～2 millimeters account for 24%, organic content is less than 1%; The yellow mud of preparation divides two kinds: the concentration of slurry 1.15 that gravitational grouting is used, the proportioning of water, yellow mud, cement are 70: 28: 2; Concentration of slurry with the grouting machine perfusion is 1.2, and the proportioning of water, yellow mud, cement is 70: 27: 3; Three, grouting equipment and layout thereof: the equipment that irritating yellow mud needs is water pump, reservoir, beater, pulp storage tank, join stock tank, grouting machine, pressure meter, mesh are 1 * 1,2 * 2 millimeter iron wire cloth, diameter is rubber tube and several valve of 5.08cm, reservoir, beater, pulp storage tank, join stock tank, grouting machine from high to low order arrange, the outlet mounted valve of beater and pulp storage tank and filtration iron wire cloth, join the stock tank outlet threeway is installed, one is connected with the gravitational grouting rubber tube, be communicated with grout hole again, as gravitational grouting; The other end is communicated with grouting machine, the grouting of can pressurizeing; Four, grouting: use earlier gravitational grouting, gravitational grouting pipe and grout hole are connected, pressure is controlled at below 0.6 kg/cm, pours into; After grout hole does not advance slurry, use the grouting machine enhancing perfusion again, pressure is controlled at below 1.2 kg/cm; When pressure during in 1.2 kg/cm, grout hole no longer advances slurry, and slurry promptly comes to an end.

2, as claimed in claim 1ly a kind ofly handle the depression of hydraulic engineering and the method for leaking with thick loess grouting, it is characterized in that grouting before, be with the crack cutter wash clean of canal end liner course, crack is firm with No. 150 concrete benefits with No. 80 mortars, big seam.