CN102296988B - Paste gravity filling simulation test device - Google Patents
Paste gravity filling simulation test device Download PDFInfo
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- CN102296988B CN102296988B CN201110188197.2A CN201110188197A CN102296988B CN 102296988 B CN102296988 B CN 102296988B CN 201110188197 A CN201110188197 A CN 201110188197A CN 102296988 B CN102296988 B CN 102296988B
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- flow meter
- static mixer
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Abstract
The invention discloses a paste gravity filling simulation test device comprising a left water tank and a right water tank, the left water tank is sequentially connected with a water pump, a flow meter and a stirring barrel A by virtue of pipelines, the stirring barrel A is sequentially connected with a delivery pump, a high-order slurry tank and a differential pressure gauge, the differential pressure gauge is connected with a concentration meter by virtue of an arch pipe, the concentration meter is connected with the flow meter, the flow meter is connected with a static mixer by virtue of a pipeline; the right water tank is sequentially connected with the water pump, the flow meter and a stirring barrel B by virtue of the pipelines, the stirring barrel B is sequentially connected with the delivery pump, a high-order solution tank, the differential pressure gauge, the flow meter and the static mixer; and the static mixer is connected with a recycling bin by virtue of the pipeline. In the invention, the problems that earth surface sinks after a 'three-low' unexploited coal is exploited and the buildings on the earth surface and water body are damaged can be solved by virtue of a simulation test, and the paste gravity filling simulation test device disclosed by the invention is applicable to the simulation test of various coal mines, especially filling of an underground coal pit after the 'three-low' unexploited goaf is exploited.
Description
Technical field
The present invention relates to simulate in a kind of test room the paste gravity filling simulation test device of mine use.
Background technology
At present, China's coal-mine (is called for short three times) under building, railway and water body presses coal commonplace, the large and medium-sized enterprise cutting coal under most wells, all be faced with " three times " and press coal problem, " three times " press coal amount to account for 10～15% of current reserves on mine, wherein building presses down coal amount and reaches more than 60%, and water body presses down coal and accounts for 28% left and right, and railway presses down coal and accounts for 12% left and right.Along with the increasing of pit mining intensity, the development of the exhaustion of mine resource, surface construction facility, " three times " Coal Pillar Design and press the problem of coal mining will be more outstanding.Some mine is no matter exploit by force the impact on earth's surface, or take over coordination order not to exploiting because of digging, cause a large amount of damages of earth's surface facility, cause huge economic loss and nervous relationship between industry and agriculture, had a strong impact on production and the economic benefit of coal mining enterprise.Therefore, how progressively coal is pressed in exploitation " three times ", and in the prerequisite bottom that does not affect earth's surface building, separate extraction some " three times " and press coal amount, be the problem that current coal enterprise has faced and must research and solve.
Paste body filling method is general to be adopted and take gangue, rubble, river sand, tailings or Gobi aggregate solid waste as aggregate (or mix piece stone), form without critical flow velocity, not bleeding, the paste slurry that do not precipitate, can low speed pipeline carry through mix with cement, flyash or lime cementitious materials, with filling pump or gravity, from the mode of slipping, by pipeline, be transported to filling area, formation be take paste body filling body and is that main overlying strata prop up control system, effectively control earth's surface mining subsidence.The strength of filling mass of paste body filling technology is large; filling velocity is fast; charging quantity is large; technique is simple; can solve " three times " and press stacking and the pollution problem of coal problem and solid waste; can protect earth's surface, groundwater resources not to be damaged, improve coal recovery rate, improve Mine Safety in Production condition simultaneously.Therefore at present countries in the world bargh, the particularly countries and regions of mining industry prosperity are all at this placement method of extensive use.It is one of major way of mine paste body filling that filling slurry is carried from the mode of slipping with gravity, and therefore, development test chamber simulated field paste self-sliding filling system is produced reality to guide field and will be had important economy, society and environment protection significance.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides paste gravity filling simulation test device a kind of simple in structure, with strong points.
The technical scheme that the present invention solves the problems of the technologies described above is: a kind of paste gravity filling simulation test device, it comprises two ponds, left and right, first pond in described left side connects the first water pump, first flow meter and agitator A successively through pipeline, agitator A connects the first delivery pump, high-order kiln basin and the first difference gauge successively through pipeline, the first difference gauge connects densimeter through arc pipe, densimeter connects the 3rd flow meter, and the 3rd flow meter connects static mixer through pipeline; Second pond on described right side connects the second water pump, the second flow meter and agitator B successively through pipeline, and agitator B connects the second delivery pump, high-order additive solution pond, the second difference gauge, the 4th flow meter and static mixer successively through pipeline; Described static mixer connects collection box through pipeline.
In order to realize products perfection, improve, improve combination property of the present invention, further step is:
In described high-order kiln basin, be provided with mixer.
In described agitator A and agitator B, be provided with mixer.
The inner chamber of described static mixer is provided with two helical axis, and the helical blade of two helical axis divides left rotation and right rotation.
Described the first delivery pump is delivered to the aggregate slurry stirring in high-order kiln basin, and the second delivery pump is delivered to additive solution in high-order additive solution pond.
Described high-order kiln basin and high-order additive solution pond are based upon on steelframe platform, and are positioned at sustained height, and the additive solution in the aggregate slurry in high-order kiln basin and high-order additive solution pond is carried by deadweight.
The intake line of described static mixer is divided into aggregate slurry pipeline transport pipeline and additive solution transfer pipeline, and at static mixer, place converges, and transfer pipeline is combined type, and length of pipe and arrangement change according to static mixer position.
The beneficial effect that the present invention produced compared to existing technology: the present invention presses down as building, railway and water body the simulation test device that coalpit is filled after coal mining, the actual production that guide field coalpit is filled will have important economy, society and environment protection significance.It is large that the obturation of paste body filling technology has intensity, and filling velocity is fast, and charging quantity is large, and the simple feature of technique can solve stacking and pollution problem that " three times " press coal problem and solid waste.In laboratory, simulate the filling route of the technique of mine paste self-sliding filling, different filling slurries, can change the arrangement of pipeline, the different filling slurries of observable are in ducted flow regime; By pertinent instruments, measure flow, pressure reduction, the density of slurry, observe obturation initial setting time, final setting time, to certainly slipping filling theory, filler research, there is very important directive significance.The present invention has simple in structure, with strong points, the advantage that directiveness is strong.The present invention is reached after coal mining is pressed in solution " three times " and is caused surface depression by simulated test, the problem that earth's surface building and water body damage.
The present invention is adapted to the various collieries of simulated test, particularly three times " press the filling of underground coalpit after coal mining.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Fig. 2 is the structure chart that arc pipe connects.
In figure: 1, the first pond, the 2, first water pump, 3, first flow meter, 4, agitator A, 5, the first delivery pump, 6, arc pipe, 7, mixer, 8, high-order kiln basin, 9, the first difference gauge, 10, densimeter, 11, static mixer, 12, high-order additive solution pond, 13, collection box, 14, agitator B, the 15, the 3rd flow meter, 16, the 4th flow meter, the 17, second difference gauge, the 18, second delivery pump, 19, the second flow meter, the 20, second water pump, the 21, second pond.
The specific embodiment
Referring to Fig. 1, Fig. 2, a kind of paste gravity filling simulation test device, it comprises two ponds, left and right, first pond 1 in left side connects the first water pump 2, first flow meter 3 and agitator A4 successively through pipeline, agitator A4 connects the first delivery pump 5, high-order kiln basin 8 and the first difference gauge 9 successively through pipeline, the first difference gauge 9 connects densimeter 10 through arc pipe 6, and densimeter 10 connects the 3rd flow meter 15, the three flow meters 15 and connects static mixer 11 through pipeline; Second pond 21 on right side connects the second water pump 20, the second flow meter 19 and agitator B14 successively through pipeline, and agitator B14 connects the second delivery pump 18, high-order additive solution pond 12, the second difference gauge 17, the 4th flow meter 16 and static mixer 11 successively through pipeline; Static mixer 11 connects collection box 13 through pipeline.In high-order kiln basin 8, be provided with mixer 7; In agitator A4 and agitator B, 14 are provided with mixer 7.The inner chamber of static mixer 11 is provided with two helical axis, and the helical blade of two helical axis divides left rotation and right rotation.The first delivery pump 5 is delivered to the aggregate slurry stirring in high-order kiln basin 8, and the second delivery pump 18 is delivered to additive solution in high-order additive solution pond 12.High-order kiln basin 8 and high-order additive solution pond 12 are based upon on steelframe platform, and are positioned at sustained height, and the additive solution in the aggregate slurry in high-order kiln basin 8 and high-order additive solution pond 12 is carried by deadweight.The intake line of static mixer 11 is divided into aggregate slurry pipeline transport pipeline and additive solution transfer pipeline, and at static mixer, 11 places converge, and transfer pipeline is combined type, and length of pipe and arrangement change according to static mixer 11 positions.
Working method of the present invention is: the first water pump 2 is controlled the water in the first pond 1, left side quantitatively to pump into agitator A4 through first flow meter 3, and the quantitative aggregate good with agitator A4 scale mixes and stir makes slurry; Aggregate adopts gangue, rubble, river sand, tailings or Gobi aggregate solid waste, and can between or mix piece stone and form.With the first delivery pump 5, slurry is delivered to the high-order kiln basin 8 of certain drop, and stir at high-order kiln basin 8 inner edges, limit falls to the first difference gauge 9 by conducting oneself with dignity along pipeline, pressure differential when the first difference gauge 9 is used for measuring slurry and falls to flowing, slurry is through arc pipe 6, densimeter 10 and the 3rd flow meter 15 input static mixers 11, the concentration of densimeter 10 random measurement slurries, the 3rd flow meter 15 is controlled the flow of slurry, namely controls the consumption of slurry.The effect of arc pipe 6 is pressure differentials in pipeline while keeping pulp flow, reaches pipeline pressure holding function.
When above-mentioned aggregate is made slurry and is delivered to static mixer 11, second water pump 20 on right side is controlled the water in second pond 21 on right side quantitatively to pump into agitator B14 through the second flow meter 19, mixes and stirs with the additive that in agitator B14, scale is good; Additive comprises cement, flyash or lime cementitious materials, through making without critical flow velocity, not bleeding, the paste slurry solution that do not precipitate, can low speed pipeline carry with water mix.Paste slurry solution after additive stirs is delivered to high-order additive solution pond 12 through the second delivery pump 18, additive falls to the second difference gauge 17 by deadweight along pipeline in high-order additive solution pond 12, the pressure differential that the second difference gauge 17 is measured in the flow process of slurry whereabouts, paste slurry solution flows into the 4th flow meter 16 by the second difference gauge 17, the 4th flow meter 16 is controlled the flow of additive, namely control the consumption of additive, additive is through the 4th flow meter 16 input static mixers 11.
In the hopper of static mixer 11, the additive paste slurry solution of the aggregate slurry of certain flow and certain flow mixes in proportion, inner chamber at static mixer 11, two contrary helical axis uniform stirrings of rotation direction are made filling slurry, as sandstone slurry and the mixing of cement paste slurry, through static mixer 11 uniform stirrings, make concrete filling slurry, filling slurry is in pipeline flows into collection box 13.Observe initial set, the final setting time of filling slurry in collection box 13, and take out the wherein final obturation forming and carry out Experiments of Machanics, to certainly slipping the research of filling theory, filler, there is very important directive significance.
The present invention is by simulated experiment, building, railway and water body pressed down after coal mining to coalpit and fill and have very important directive significance.
Claims (7)
1. a paste gravity filling simulation test device, it is characterized in that: it comprises two ponds, left and right, first pond in described left side connects the first water pump, first flow meter and agitator A(4 successively through pipeline), agitator A(4) through pipeline, connect successively the first delivery pump, high-order kiln basin (8) and the first difference gauge, the first difference gauge connects densimeter (10) through arc pipe (6), densimeter (10) connects the 3rd flow meter, and the 3rd flow meter connects static mixer (11) through pipeline; Second pond on described right side connects the second water pump, the second flow meter and agitator B(14 successively through pipeline), agitator B(14) through pipeline, connect successively the second delivery pump, high-order additive solution pond (12), the second difference gauge, the 4th flow meter and static mixer (11); Described static mixer (11) connects collection box (13) through pipeline.
2. paste gravity filling simulation test device according to claim 1, is characterized in that being provided with in described high-order kiln basin (8) mixer (7).
3. paste gravity filling simulation test device according to claim 1, is characterized in that described agitator A(4) and agitator B in (14) be provided with mixer (7).
4. paste gravity filling simulation test device according to claim 1, is characterized in that the inner chamber of described static mixer (11) is provided with two helical axis, and the helical blade of two helical axis divides left rotation and right rotation.
5. paste gravity filling simulation test device according to claim 1, it is characterized in that described the first delivery pump is delivered to the aggregate slurry stirring in high-order kiln basin (8), the second delivery pump is delivered to additive solution in high-order additive solution pond (12).
6. paste gravity filling simulation test device according to claim 1, it is characterized in that described high-order kiln basin (8) and high-order additive solution pond (12) are based upon on steelframe platform, and be positioned at sustained height, the additive solution in the aggregate slurry in high-order kiln basin (8) and high-order additive solution pond (12) is carried by deadweight.
7. paste gravity filling simulation test device according to claim 1, the intake line that it is characterized in that described static mixer (11) is divided into aggregate slurry pipeline transport pipeline and additive solution transfer pipeline, at static mixer (11), locate to converge, transfer pipeline is combined type, and length of pipe and arrangement change according to static mixer (11) position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188197.2A CN102296988B (en) | 2011-07-06 | 2011-07-06 | Paste gravity filling simulation test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188197.2A CN102296988B (en) | 2011-07-06 | 2011-07-06 | Paste gravity filling simulation test device |
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| CN102296988A CN102296988A (en) | 2011-12-28 |
| CN102296988B true CN102296988B (en) | 2014-03-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102562147B (en) * | 2012-01-05 | 2014-04-09 | 山东科技大学 | Simulation test system for multilayer filling of paste |
| CN105737902A (en) * | 2016-04-18 | 2016-07-06 | 中南大学 | Experimental test system for phosphogypsum filling, stirring and pumping integrated endless tube |
| CN113735544B (en) * | 2021-08-31 | 2023-08-01 | 鑫选(厦门)矿冶科技有限公司 | Gel material and mine filling system |
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| JP3807658B2 (en) * | 2000-09-08 | 2006-08-09 | 国土交通省中部地方整備局長 | Underground cavity filling method |
| JP2005264455A (en) * | 2004-03-16 | 2005-09-29 | Tobishima Corp | Underground cavity filling method and filler for underground cavity |
| CN101008315B (en) * | 2007-02-07 | 2010-07-07 | 邸建友 | Paste-like backfill technology used in coal cutting area |
| CN201173137Y (en) * | 2007-12-27 | 2008-12-31 | 中国恩菲工程技术有限公司 | Filing device |
| CN101749047B (en) * | 2009-12-16 | 2012-10-10 | 山东科技大学 | Paste filling simulation test system |
| CN202165121U (en) * | 2011-07-06 | 2012-03-14 | 湖南科技大学 | Paste self-sliding filling simulation test device |
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