CN203606344U - Split type sand-layer high-pressure grouting simulation experimental device - Google Patents
Split type sand-layer high-pressure grouting simulation experimental device Download PDFInfo
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- CN203606344U CN203606344U CN201320762150.7U CN201320762150U CN203606344U CN 203606344 U CN203606344 U CN 203606344U CN 201320762150 U CN201320762150 U CN 201320762150U CN 203606344 U CN203606344 U CN 203606344U
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Abstract
The utility model belongs to the technical field of mineral engineering and safety, and in particular relates to a split type sand-layer high-pressure grouting simulation experimental device. The split type sand-layer high-pressure grouting simulation experimental device can be stripped after grouting into sand and the state of grout in sand can be intuitively grasped; the testing and verifying problems of the action principle and effects for grouting into a sand layer in the stratum at high pressure through a well or a ground currently are solved. According to the technical scheme adopted by the utility model, the split type sand-layer high-pressure grouting simulation experimental device comprises a sand cylinder and a water tank, wherein the sand cylinder is divided into a left half cylinder and a right half cylinder; the left half cylinder and the right half cylinder are jointed into a whole; a sealing gasket is arranged at the joint part; between the left half cylinder and the right half cylinder; slurry outlets are formed in the side walls of the left half cylinder and the right half cylinder; a water inlet is formed in the side wall at the upper end of the left half cylinder; a grouting pipe is arranged between the left half cylinder and the right half cylinder; grouting holes are formed in the circumferential wall of the grouting pipe; a pressurizing cover board is arranged at the upper ends of the left half cylinder and the right half cylinder; the water inlet is connected with a water outlet in the water tank through a hose.
Description
One, technical field:
The utility model belongs to mining engineering and safety technique field, is specifically related to a kind of split type layer of sand high-pressure slip-casting analogue experiment installation.
Two, background technology:
In some coal field areas, when coal mining workplace is when by thin basement rock Moderate and Thick Unconsolidated Formation water enrichment area, exist the disaster of the routed sand of gushing water to threaten, if do not carry out corresponding prevention and processing, water sand is burst into workplace, serious casualties can occur and flood well accident.Adopt in down-hole and to change the burst means of sand thing source condition of gushing water to water-rich sand layer mesohigh slip casting in certain limit on rock stratum and go the pre-Against Water Inrush sand disaster of bursting, more current conventional change workplace developing mode (house column type, strip-type, reserved coal pillar formula etc.) and elimination hydrodynamic condition (hold back on pre-drainage, ground) means, have the advantages that restrictive condition is few, expense is low, speed is fast, effective.Down-hole is to the mode of water-rich sand layer mesohigh slip casting, be exactly in the tunnel drill site of development work face certain distance, to hole and high-pressure slip-casting to layer of sand under mine, change that the overall physico mechanical characteristic of layer of sand makes it to solidify and water sand under the passage of bursting not smooth, thereby guarantee workplace safety.
Utilize this technology to realize the multiple thin basement rock Moderate and Thick Unconsolidated Formation water enrichment areas of the safety coal-face that underlies; for example 22404 and 22405 workplaces are passed through smoothly in the Chinese Shenhua eastern Harrar ditch of god colliery; it is 4 meters that two Adjacent Working Faces are adopted thick; adopting wide is 260 meters; two workplaces, 32.7 ten thousand tons and 41.5 ten thousand tons of the resources that reclaim respectively more; realize 44,520 ten thousand yuan of new output values; 29,680 ten thousand yuan of profits; save 5,000,000 yuan of ground surface works land expropriation costs, and effectively protected ground ecologic environment and groundwater resource.Facts have proved that it is highly effective utilizing down-hole high pressure grouting mode to transform thin basement rock Moderate and Thick Unconsolidated Formation water enrichment area physico mechanical characteristic, its technique effect and economic effect are obvious.
High-pressure slip-casting can reach the object of transformation loose sand characteristic, but slurries are how to move in layer of sand, and be finally how to reach the routed sand effect of control gushing water, the result of study that current neither one is directly perceived and quantitative, does not retrieve similar test and device yet.Object of the present invention be just to provide a kind of can be at lab simulation the device to aquifer sand layer high-pressure slip-casting process.This test unit is split type, completes after grouting sand layer slip casting, test unit can be separated, and the whole test body of not disturbance wait injecting after slurries condense completely, can clear observation after agglutination sand is not peeled off and measure path and the coagulated state of slurries migration.
Three, utility model content:
The utility model is in order to solve the weak point in above-mentioned background technology, a kind of split type layer of sand high-pressure slip-casting analogue experiment installation is provided, this device can after completing be peeled off test unit in slip casting in sand, can intuitively grasp the state of slurries in sand, solve current by down-hole or ground test and the validation problem to stratum medium sand floor height pressure grouting action principle and effect.
For achieving the above object, the technical solution adopted in the utility model is: a kind of split type layer of sand high-pressure slip-casting analogue experiment installation, comprise sand cylinder and tank, it is characterized in that: described sand cylinder is divided into left half and right half, described half, a left side and half, the right side are spliced into one, the part of splicing is provided with sealing gasket mutually, on the sidewall that half, a left side and the right side are half, be provided with slurry outlet, on the upper end sidewall that a described left side is half, be provided with water inlet, between left half and right half, be provided with Grouting Pipe, in the circle wall of Grouting Pipe, be provided with grouting hole, half described, a left side and right half upper end are provided with and add cover clamp, described water inlet is connected with the water delivering orifice on tank by flexible pipe.
Described Grouting Pipe is formed by connecting by slip casting connecting bend by slip casting standpipe and the flat pipe of slip casting, and the flat pipe of slip casting is arranged at the bottom of right half.
The other end of the described flat pipe of slip casting is provided with rapid-acting coupling.
Described sealing gasket is silica gel sealing pad.
The material of described sand cylinder is organic glass.
Described slip casting standpipe upper end is provided with plug.
On the outer wall of described sand cylinder, be provided with hoop.
Between the flat pipe of described rapid-acting coupling and slip casting, be provided with valve.
Compared with prior art, advantage and the effect that the utlity model has are as follows: the split type layer of sand high-pressure slip-casting of the utility model simulation test device can be realized at lab simulation to layer of sand mesohigh slip casting process and slip casting result, can adjust the indexs such as grouting pressure, concentration of slurry, sand particle diameter, layer of sand packing, layer of sand silt content on a large scale.Grouting pressure can be adjusted to 5MPa step by step by 0.5MPa, the concentration of slurries can be selected by water cement ratio between 1:0.5～1:2, can according to circumstances adjust the grain composition (can test respectively the operating modes such as coarse sand, fine sand, powder fine sand) of sand, the packing of sand can be adjusted by changing layer of sand upward pressure, in slip casting process, the mechanism of slurries to water sand can be clearly observed.After injecting slurries condense in sand, test unit is separated, the slip casting sand body after complete outstanding slurries solidify, by successively dissecting the slip casting sand body forming after slip casting is condensed, accurately measures migration path and the curing form of slurries under different operating modes.By this test unit, the slip casting transformation layer of sand character effect of test under the indexs such as different grouting pressures, concentration of slurry, sand-grading, layer of sand packing, layer of sand silt content, can analyze and draw the principle of utilizing the routed sand disaster of the pre-Against Water Inrush of down-hole high pressure slip casting transformation water-rich sand layer characteristic, and can utilize test findings to be optimized this technology, make water-rich sand layer down-hole high pressure slurry injection technique in order to be effective, have more broad applicability.
Four, accompanying drawing explanation:
Fig. 1 is the utility model test unit elevation perspective;
Fig. 2 is the utility model test unit vertical view;
Fig. 3 is the utility model test unit tank skeleton view;
Reference numeral: 1-sand barrel, 2-sand storehouse, 3-slip casting standpipe, the flat pipe of 4-slip casting, 5-slip casting connecting bend, 6-grouting hole, 7-slurry outlet, 8-water inlet, 9-add cover clamp, 10-grouting port, 11-valve, 12-rapid-acting coupling, 13-sealing gasket, half, 14-right side, half, 15-left side, 16-tank, 17-water delivering orifice.
Five, embodiment:
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
Referring to Fig. 1 and Fig. 2: in the utility model, overall appearance is circular, sand cylinder utilizes transparent organic clear glass to make, at the bottom of sand cylinder comprises sand cylinder by half 15, a vertical dimidiation left side, centre and right half 14(, do not comprise sand cylinder top cover), separately comprise a tank 16, the water delivering orifice 17 of tank 16 is connected by transparent hose with the water inlet 8 on left half 15, slip casting standpipe 3 is connected by slip casting connecting bend 5 with the flat pipe 4 of slip casting on right half 14, plug is installed in slip casting standpipe 3 upper ends, right half 14 and left half 15 amalgamation, phase splicing seams place folder silica gel sealing pad 13, the outer hoop banding of sand cylinder, sand storehouse 2 sand loadings, sand higher than water inlet 8, to add cover clamp 9 and be positioned over layer of sand top, vertically pressurize by adding cover clamp 9, utilizing special gelatin will add cover clamp 9 seals in sand barrel 1.Can realize by three kinds of modes adding on cover clamp 9 pressurization, the one, on the cover board configure the counterweight bloom of relevant pressure requirement; The 2nd, directly whole test unit is positioned on large-scale pressing machine, apply and keep pressure according to calculation requirement; The 3rd, on test unit, configure counterforce device, regulate and control stressed size by pressure cell reading out data.Water inlet 8 is connected with water delivering orifice 18, water filling in tank 16, rapid-acting coupling 12 connects grouting equipment.
The sand of working good is packed in assembling and the sand cylinder that seal, adds water saturation, after saturated completing, by adding cover clamp pressurization, regulate the packing of sand, reach voltage stabilizing after set pressure, and add cover clamp and barrel seals, by tank to moisturizing in sand cylinder.Then access grouting equipment by rapid-acting coupling, carry out high-pressure slip-casting, slurries enter in sand by the grouting hole on slip casting standpipe, and can flow out test unit by the slurry outlet on sand barrel.Slurries enter layer of sand by grouting hole, through layer of sand certain length, after the slurries that inject condense, test unit can be taken apart, and dissecting injecting cement paste can complete observation and be measured to the existence of slurries in layer of sand.The track that slurries move in device and solidify after form be the physical effect of high-pressure slip-casting, and can analyze accordingly the principle of slip casting transformation layer of sand characteristic.This device can change the indexs such as on-load pressure on grouting pressure, head height, concentration of slurry, pressurization cushion block, layer of sand grain size, layer of sand silt content, can carry out the layer of sand high-pressure slip-casting test in multiple situation.
When use, first flat to slip casting standpipe 3 use raw material bands and slip casting pipe 4 is connected by slip casting connecting bend 5, and the plug of screwing in slip casting standpipe 3 upper ends.Then by right device half 14 and left half 15 amalgamation, and half barrel of splicing seams 13 place sandwiches silica gel sealing pad in left and right, and the outer multiple tracks hoop banding that uses of cylinder then packs sand in sand storehouse 2, and the height of sand exceeds water inlet 8, and presaturation adds water.To add cover clamp 9 and be positioned over layer of sand top, and vertically pressurize by adding cover clamp 9, voltage stabilizing after pressure reaches preset value, utilizes special gelatin will add cover clamp 9 and seals in sand barrel 1.Utilize transparent hose that water inlet 8 is connected with water delivering orifice 17, to water filling in tank 16, and be placed in the position higher than sand cylinder, after certain hour, utilize rapid-acting coupling 12 to connect grouting device, start grouting test by grouting port 10 to filling in the sand cylinder of sand, grouting test finishes to treat that injecting paste material condenses completely, unclamp hoop, half, a left side is taken off, can start to dissect injecting cement paste.
Claims (8)
1. a split type layer of sand high-pressure slip-casting analogue experiment installation, comprise sand cylinder and tank (16), it is characterized in that: described sand cylinder is divided into left half (15) and right half (14), a described left side half (15) and right half (14) is spliced into one, the part of splicing is provided with sealing gasket (13) mutually, on the sidewall of left half (15) and right half (14), be provided with slurry outlet (7), on the upper end sidewall on a described left side half (15), be provided with water inlet (8), between left half (15) and right half (14), be provided with Grouting Pipe, in the circle wall of Grouting Pipe, be provided with grouting hole (6), described half (15), a left side and right half (14) upper end are provided with and add cover clamp (9), described water inlet (8) is connected with the water delivering orifice (17) on tank (16) by flexible pipe.
2. the split type layer of sand high-pressure slip-casting of one according to claim 1 analogue experiment installation, it is characterized in that: described Grouting Pipe is formed by connecting by slip casting connecting bend (5) by slip casting standpipe (3) and the flat pipe of slip casting (4), and the flat pipe of slip casting (4) is arranged at the bottom of right half (14).
3. the split type layer of sand high-pressure slip-casting of one according to claim 1 and 2 analogue experiment installation, is characterized in that: the other end of the described flat pipe of slip casting (4) is provided with rapid-acting coupling (12).
4. the split type layer of sand high-pressure slip-casting of one according to claim 3 analogue experiment installation, is characterized in that: described sealing gasket (13) is silica gel sealing pad.
5. the split type layer of sand high-pressure slip-casting of one according to claim 4 analogue experiment installation, is characterized in that: the material of described sand cylinder is organic glass.
6. the split type layer of sand high-pressure slip-casting of one according to claim 5 analogue experiment installation, is characterized in that: described slip casting standpipe (3) upper end is provided with plug.
7. the split type layer of sand high-pressure slip-casting of one according to claim 6 analogue experiment installation, is characterized in that: on the outer wall of described sand cylinder, be provided with hoop.
8. the split type layer of sand high-pressure slip-casting of one according to claim 7 analogue experiment installation, is characterized in that: between the flat pipe of described rapid-acting coupling (12) and slip casting (4), be provided with valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762150.7U CN203606344U (en) | 2013-11-28 | 2013-11-28 | Split type sand-layer high-pressure grouting simulation experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762150.7U CN203606344U (en) | 2013-11-28 | 2013-11-28 | Split type sand-layer high-pressure grouting simulation experimental device |
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| CN203606344U true CN203606344U (en) | 2014-05-21 |
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| CN201320762150.7U Withdrawn - After Issue CN203606344U (en) | 2013-11-28 | 2013-11-28 | Split type sand-layer high-pressure grouting simulation experimental device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630654A (en) * | 2013-11-28 | 2014-03-12 | 中煤科工集团西安研究院有限公司 | Split type simulation experiment device for high-pressure grouting of sand layer |
| CN105866349A (en) * | 2016-05-25 | 2016-08-17 | 长安大学 | Three-dimensional visual grouting effect test chamber |
| CN106198349A (en) * | 2016-07-18 | 2016-12-07 | 广西交通科学研究院 | The method and apparatus of grouting material permeability values |
-
2013
- 2013-11-28 CN CN201320762150.7U patent/CN203606344U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630654A (en) * | 2013-11-28 | 2014-03-12 | 中煤科工集团西安研究院有限公司 | Split type simulation experiment device for high-pressure grouting of sand layer |
| CN103630654B (en) * | 2013-11-28 | 2016-02-10 | 中煤科工集团西安研究院有限公司 | Split type layer of sand high-pressure slip-casting analogue experiment installation |
| CN105866349A (en) * | 2016-05-25 | 2016-08-17 | 长安大学 | Three-dimensional visual grouting effect test chamber |
| CN106198349A (en) * | 2016-07-18 | 2016-12-07 | 广西交通科学研究院 | The method and apparatus of grouting material permeability values |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140521 Effective date of abandoning: 20160210 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |