CN109812293A - It is a kind of to seal CO up for safekeeping using coal mine waste mine goaf2Method - Google Patents
It is a kind of to seal CO up for safekeeping using coal mine waste mine goaf2Method Download PDFInfo
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- CN109812293A CN109812293A CN201910118992.0A CN201910118992A CN109812293A CN 109812293 A CN109812293 A CN 109812293A CN 201910118992 A CN201910118992 A CN 201910118992A CN 109812293 A CN109812293 A CN 109812293A
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- 239000003245 coal Substances 0.000 title claims abstract description 53
- 239000002699 waste material Substances 0.000 title claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000007569 slipcasting Methods 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 20
- 238000005065 mining Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 57
- 238000005516 engineering process Methods 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 8
- 238000011160 research Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 239000003673 groundwater Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
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- 238000012806 monitoring device Methods 0.000 description 1
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- 238000010926 purge Methods 0.000 description 1
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Abstract
CO is sealed up for safekeeping using coal mine waste mine goaf the invention discloses a kind of2Method, belong to CO2Geological storage technical field, specially by the CO from fixed discharge source by obtaining after separation and concentration2It is injected into the goaf of coal mine waste mine after gas compression to supercriticality, is permanently sealed up for safekeeping using goaf and underground Abandoned Tunnel and chamber space, CO is monitored by arrangement piezometric well2Seal situation up for safekeeping, by strata control, stay set and reinforce isolated coal pillar, setting divider wall, slip casting block gap guarantee CO2The safety sealed up for safekeeping；It is simple that the present invention seals mechanism up for safekeeping, CO2It is small to inject resistance, injection is at low cost, and geological exploration engineering amount is few, is easily managed, and is conducive to CO2The recycling in future, the injection of high pressure early period can alleviate surface subsidence, and the engineerings such as existing drilling, pit shaft can reuse in field with "nine squares", reduce project amount, the CO such as large thermal power plant2Emission source and coal mine association are concentrated, CO is conducive to2It seals up for safekeeping on the spot.
Description
Technical field
The invention belongs to CO2Geological storage technical field, and in particular to it is a kind of using coal mine waste mine goaf seal
Deposit CO2Method.
Background technique
World's non-renewable energy at present, especially Chinese non-renewable energy is based on fossil energy, CO2Discharge amount constantly increases.
Reduce CO2Amount is in addition to measure of taking the initiative reduces discharge (such as raising energy efficiency, exploitation clear energy sources) and improves earth land
Ground system is to CO2Absorbability (carbon remittance) outside, to the CO generated2Carrying out artificial disposition becomes concerned by people in recent years
Focus.One of CO2Artificial method of disposal is using CO2Synthetic products carry out CO2Utilization, but by technical restriction, potentiality
It is limited；Therefore, to CO2Seal up for safekeeping and becomes the research field being concerned.
CO at present2The place manually sealed up for safekeeping is mainly ocean and underground.
CO2Ocean Plugging Technology Applied the 1970s occurs in Australia, obtains more research in maritime state,
The research that middle Japan RITE (Incorporated Foundation Earth's environment of industrial technology research institutes) carries out is more deep, has been achieved for enriching
Achievement.Although ocean handles CO2Potentiality it is very huge, but due to the office of the complexity of marine ecosystems and test method
It is sex-limited, it can not accurately estimate CO2Influence of the extensive injection to marine ecosystems, therefore the technology remains in reality at present
Test conceptual phase.
CO2Geological storage is with a wide range of applications.CO2The basic ideas of geological storage technology are as follows: from concentrate discharge
The CO that source (power plant, steel plant etc.) separation and concentration obtains2It is injected into the stratum interval that deep under ground has appropriate sealing condition
From getting up.It mainly include several links such as exhaust gas separation, compression, conveying and pressure regulation injection.Study at present it is more and have application
The CO of value2Geological storage mode mainly has: (1) the deep salt water layer in sedimentary basin is sealed up for safekeeping；(2) oil gas field is sealed up for safekeeping, including
Discarded or the oil gas field without business extraction value seal up for safekeeping and exploit in oil gas field seal up for safekeeping (improve oil recovery CO2It drives
Oil tech: CO2-EOR)；(3) deep fractures without business extraction value, which are sealed up for safekeeping, (reinforces the CO of coalbed methane recovery2Purging technology:
CO2-ECBMR).Wherein, salt water layer in deep is sealed up for safekeeping the most noticeable.
It is current most study, most widely used although deep salt water layer seals the advantages such as, safety big with storage capacity up for safekeeping,
It is the CO of most promotion prospect2Plugging Technology Applied, but deep salt water layer seals the difficulty and challenge also very more that research faces up for safekeeping.Its
Physical and chemical process complexity, the time being related to, space scale are broad, in addition China starts late in the field, face a large amount of
Completely new research field still has very long distance to walk, is difficult to resolve the matter of great urgency away from practical application popularization.Therefore, according to Chinese practice
Situation, under the premise of safety allows, sacrifice it is certain seal ability up for safekeeping, find it is a kind of it is widely distributed, injection is convenient, at low cost
Honest and clean Plugging Technology Applied is more real.
There is long coal mining history to have a large amount of mine to scrap because of resource exhaustion so far for China.Coal mine
There are the mined out of large area to be caving area and Abandoned Tunnel and chamber for abandoned mine.And with the high tension coal mining of Chinese coal,
More, deeper abandoned mine goaf will be constantly provided.What goaf overlying rock was formed after being caving is caving area's voidage
It is all much larger than deep salt water layer reservoir with the geometric dimension in gap, in addition Abandoned Tunnel and chamber, provide not only huge CO2
Seal space, and CO up for safekeeping2Pressure injection resistance will be much smaller than deep salt water layer reservoir.In addition, the exploitation geology work that abandoned mine is long-term
The detailed geologic information provided is provided and data are also the incomparable advantage of deep salt water layer reservoir.As long as according to buried depth and upper
Rock stratum CO2The developmental state of escape route, adjustment seal pressure up for safekeeping and take close measure appropriate, can obtain considerable
CO2It seals capacity up for safekeeping, is the CO being easily achieved a kind of in a short time2Geological storage technology.
Summary of the invention
CO is sealed up for safekeeping using coal mine waste mine goaf the present invention provides a kind of2Method, solve the above problem, this
Invention is achieved by the following technical solution.
CO is sealed up for safekeeping using coal mine waste mine goaf it is an object of the present invention to provide a kind of2Method, specifically include following
Step:
S1: selecting discarded coal mine, assesses CO2The ability and safety sealed up for safekeeping according to goaf country rock and are above covered
Rock stratum integrated degree and gas permeability determination seal pressure up for safekeeping accordingly, to be sealed up for safekeeping ability accordingly；
S2: to the security risk of discovery by strata control, stay set and reinforce isolated coal pillar, setting divider wall, slip casting are blocked up
What stuff up a crack gap carried out processing and artificial setting autonomous closure seals unit up for safekeeping；
S3: it is determined according to storage condition and seals pressure, temperature, injection flow parameter up for safekeeping；
S4: the CO that will be obtained from ground fixed discharge source by separation and concentration2Sky is sealed up for safekeeping according to the injection of parameter described in S3
Between；
S5: piezometric well is transformed into underground CO using field with "nine squares" internal drilling or pit shaft2The situation of sealing up for safekeeping is monitored.
Preferably, sealing space in the S4 up for safekeeping includes Main Reservoirs and auxiliary reservoir；
The Main Reservoirs are the discarded permanent development work in caving zone hole and underground and chamber；The auxiliary reservoir
Abandoned coal pillar initial fissure and mining influence cause in the fissure zone that constitutes for the crack of base object model rock stratum above caving zone, field with "nine squares"
Pressure break crack.
It is highly preferred that the absorption that the auxiliary reservoir further includes rock particles surface is sealed up for safekeeping, the dissolution of underground water is sealed up for safekeeping,
CO2It seals up for safekeeping with rock generation chemical reaction generation carbonate and is sealed up for safekeeping with underground water waterpower trap.
Preferably, CO is assessed in the S12The ability sealed up for safekeeping uses following computation model:
Assuming that goaf meets the requirement for covering closed cap rock and depth, CO can be used as2Seal reservoir up for safekeeping:
If productive area is s, coal seam thickness m, then goaf volume is s × m after seam mining；
If immediate roof thickness be h, then coal seam directly push up be caving after, goaf rock initial stacking volume s × (m+h), sky
Gap volume is s × m；
If earth's surface final subsidence amount is y, then residual clearance volume in goaf is s × (m+h-y)-s × h=s × (m-y)；
If CO2Sealing density up for safekeeping isThen goaf gap CO2The amount of sealing up for safekeeping is
The then goaf residual clearance CO that unit yield provides2The ability of sealing up for safekeeping is
Y/m is defined as subsidence coefficient q
Then:
In formula:
The CO that Q-unit yield provides2The amount of sealing up for safekeeping, t；
—CO2Seal density, t/m up for safekeeping3；
ρm- raw coal buries density, t/m3；
Q-subsidence coefficient, i.e. the ratio between earth's surface final subsidence amount and seam mining thickness.
Preferably, the S4 specific steps are as follows: will be from CO2The CO of emission source discharge2It is collected by trapping workshop, then
It is compressed by compression plant, compressed CO2Space is sealed up for safekeeping by the discarded coal mine of compression injection workshop injection,
Compressed CO2It can also be temporarily stored in storage workshop, reinject mine later seals space up for safekeeping.
Compared with prior art, the present invention has the following advantages:
(1) main reservoir is that large-scale dimension and large scale gap are sealed up for safekeeping, and it is simple to seal mechanism up for safekeeping, CO2It is small to inject resistance, injection
It is at low cost；
(2)CO2Reservoir wall rock geology abundant information understands sufficiently, and geological exploration engineering amount is few；
(3) each field with "nine squares" relative closure, can be formed it is independent seal unit up for safekeeping, be easily managed；
(4) be conducive to CO2The recycling in future；
(5) high pressure early period injection can alleviate surface subsidence；
(6) engineerings such as existing drilling, pit shaft can reuse in field with "nine squares", reduce project amount；
(7) CO such as large thermal power plant2Emission source and coal mine association are concentrated, CO is conducive to2It seals up for safekeeping on the spot.
Detailed description of the invention
Fig. 1 is the CO of coal mine waste mine of the present invention2Reservoir schematic diagram；
Fig. 2 is that CO is sealed in goaf up for safekeeping2Capacity calculation model；
Fig. 3 is CO of the invention2Seal process flow chart up for safekeeping.
Description of symbols:
1、CO2Emission source, 2, trapping workshop, 3, compression plant, 4, storage workshop, 5, compression injection workshop, 6, goaf,
7, ground monitoring instrument, 8, warp damage, 9, abandoned coal pillar, 10, fissure zone, 11, caving zone, 12, residual tunnel.
Specific embodiment
In order to enable those skilled in the art to more fully understand, technical solution of the present invention is practiced, below with reference to specific
The invention will be further described for embodiment and attached drawing, but illustrated embodiment is not as a limitation of the invention.
The present invention, which provides, a kind of seals CO up for safekeeping using coal mine waste mine goaf2Method, specifically includes the following steps:
S1: selecting discarded coal mine, assesses CO2The ability and safety sealed up for safekeeping according to goaf country rock and are above covered
Rock stratum integrated degree and gas permeability determination seal pressure up for safekeeping accordingly, to be sealed up for safekeeping ability accordingly；
S2: to the security risk of discovery by strata control, stay set and reinforce isolated coal pillar, setting divider wall, slip casting are blocked up
What stuff up a crack gap carried out processing and artificial setting autonomous closure seals unit up for safekeeping；
S3: it is determined according to storage condition and seals pressure, temperature, injection flow parameter up for safekeeping；
S4: the CO that will be obtained from ground fixed discharge source by separation and concentration2Sky is sealed up for safekeeping according to the injection of parameter described in S3
Between；
S5: piezometric well is transformed into underground CO using field with "nine squares" internal drilling or pit shaft2The situation of sealing up for safekeeping is monitored.
Since the China's coal mines overwhelming majority is pit mining, voluntarily caving method management top plate, i.e. coal seam are generallyd use at present
After adopting, above cover direct rimrock layer and be voluntarily caving, it is broken it is swollen after rock stratum be full of goaf, then as the slow sinking of base object model
And it is gradually closely knit, it abandoned coal pillar 9 and is opened to form caving zone 11, fissure zone 10 and warp damage 8 from bottom to top, in mine
Digging permanent residual tunnel 12 and chamber can also retain naturally, therefore, as shown in Figure 1, abandoned mine CO2Reservoir is by following several sides
Face composition:
(1) voluntarily within the scope of the goaf of caving method management top plate, across the backward rock gap through overcompaction, i.e. caving zone
11 holes；
(2) crack of 11 top base object model rock stratum of caving zone, i.e. fissure zone 10；
(3) the discarded permanent residual tunnel 12 in underground and chamber；
(4) pressure break crack caused by the initial fissure and mining influence of the various abandoned coal pillars 9 left in field with "nine squares".
Wherein (1), (3) are Main Reservoirs, other are auxiliary reservoir.
In addition, abandoned mine seals CO up for safekeeping2, large scale gap and residual except the caving zone rock formation as Main Reservoirs
It is outer that the large-scale dimension that tunnel, chamber are formed is that nature is sealed up for safekeeping, exist simultaneously with deep salt water layer seal up for safekeeping other seal up for safekeeping
Mode, such as:
(1) capillarity of rock stratum slight void seals (fissure zone, permanent coal pillar) up for safekeeping；
(2) (caving zone) is sealed in the absorption on rock particles surface up for safekeeping；
(3) dissolution of underground water is sealed up for safekeeping；
(4) chemistry seals (CO up for safekeeping2Chemical reaction occurs with rock and generates carbonate)；
(5) trap of underground water waterpower is sealed up for safekeeping.
Below by taking flat seven ore goaf of coal of China, mining area, central and east abandoned mine as an example, illustrates the present invention and seal CO up for safekeeping2
Method.
CO2Seal state and method of seal analysis up for safekeeping:
In the state of burying, usually guarantee CO2It is buried with supercriticality injection, to keep its stability and safety
Property, while having and biggish sealing density up for safekeeping.From the point of view of thermodynamics, CO2At certain temperature and pressure not in gas-liquid
State-the critical state divided, corresponding temperature is critical-temperature, and corresponding pressure is critical pressure, when temperature is critical-temperature, pressure
When higher than critical pressure, CO2In gas-liquid not isloation state, and when pressure is lower than critical pressure, CO2In gaseous state；When temperature is higher than
When critical-temperature, it no matter is in great pressure, CO2In gaseous state.CO2Supercriticality refer to that pressure and temperature is above
The state of critical value.Due to CO2Critical point be 31 DEG C of temperature and pressure 7.39MPa, critical density is 0.448t/m3, and
Geothermic gradient is 25~35 DEG C/km, and strata pressure is approximately hydrostatic pressure, meets CO2Supercriticality should be the pressure at this
Not less than critical pressure.CO2Supercritical fluid has the dual characteristics of gas, liquid, density concurrently between gas and liquid
Close to liquid, and viscosity is similar to gas, diffusion coefficient be liquid nearly a hundred times.This characteristic plays pass in geological storage
Key effect, the density for such as increasing carbon dioxide can reduce required memory space, convenient for conveying etc. in the duct.Therefore it to reach
To CO2It seals density up for safekeeping and adopts depth depending on sealing pressure up for safekeeping, and sealing pressure up for safekeeping to depend primarily on, on the one hand the increase of mining depth is
CO2Overcritical seal up for safekeeping provide initial condition, can achieve it is higher seal density up for safekeeping, while subsidence coefficient reduces, and emits
Falling band compaction reduces, and can provide bigger reservoir space.
The flat seven mine pit mining depth 1000m of coal in China, mining area, the central and east, as shown in Fig. 2, working seam average thickness m is
4m exploits 3,000,000 t/ of scale, the density of seam (i.e. the apparent density of coal), ρm=1.45t/m3；Temperature at where subterranean coal
It is 31 DEG C；The averag density of Strata Overlying The Seam, 2.45t/m3；δ indicates the gravity of above goaf rock stratum at goaf
The pressure coefficient of generation, value 0.8.G indicates acceleration of gravity, takes 9.8N/kg.Q: subsidence coefficient is y/m=0.2；Inject the supercritical CO in goaf2Density, unit: kg/m3；
Mining depth is the mine of 1000m, and goaf generates pressure at place after overlying rock seam mining are as follows:
According to research achievement, the CO under the pressure of 19.208MPa2Postcritical density is
According to formula it is found that the goaf residual clearance CO that then unit yield provides2Seal ability up for safekeeping are as follows:
It is so 3,000,000 tons/year of mines, the CO that can be provided every year for an annual output2The amount of sealing up for safekeeping are as follows: 300 ×
Ten thousand t of 0.39586=118.76.
As shown in figure 3, will be from CO2The CO that emission source 1 is discharged2It is collected by trapping workshop 2, then passes through compression plant 3
It is compressed, compressed CO2Pass through the goaf 6 of the discarded coal mine of the compression injection injection of workshop 5, compressed CO2?
Storage workshop 4 can be temporarily stored in, reinject the goaf 6 of mine later, using ground monitoring instrument 7 (such as field with "nine squares" internal drilling or
Pit shaft is transformed into piezometric well) to underground CO2The situation of sealing up for safekeeping is monitored.
In above-mentioned CO2It should be noted that following problems during sealing up for safekeeping:
(1) since flat seven mine abandoned mine goaf buried depth of coal is shallower, country rock bearing capacity is small, can only low pressure seal up for safekeeping, shadow
Ring CO2Sealing intensity up for safekeeping, (unit volume can seal CO up for safekeeping2Quality), it is limited to seal potentiality up for safekeeping；
(2) after by mining influence, sealing ability weakens goaf overlying rock, in addition various geological structures, easily formation CO2
Escape route, reservoir choice is smaller or needs to take measures；
(3) abandoned mine gob edge protection coal (rock), can be by CO if column thickness and intensity do not reach requirement2Pressure
Power is broken through, to cause CO2Into adjacent mine；
(4) engineerings such as discarded drilling, pit shaft, old kiln are more within the scope of coal mine field with "nine squares", and the channel easy to form to ground is made
At CO2To surface leakage；
(5) goaf and when underground water waterpower close relation, CO2It will affect quality of groundwater.
CO is sealed up for safekeeping for flat seven mine of coal2Existing problem above, the present invention take following reply safeguard procedures:
(1) it selects to carry out scrupulous assessment to the integrality of goaf overlying rock (especially warp damage) when reservoir,
Under conditions of ensuring closed, CO is determined according to the pressure of goaf overlying rock2It seals pressure up for safekeeping, and stays certain safety system
Number；
(2) leakproofness such as geological structure, drilling, pit shaft, old kiln within the scope of goaf are evaluated, there are when problem into
The necessary closure of row and reinforcing；
(3) larger, formation CO is destroyed by mining influence to above goaf rock stratum2The region of escape route carries out slip casting
The safeguard procedures such as closure；
(4) pressure monitoring device is installed in reservoir upper base, observes goaf CO2Pressure change finds CO in time2It is
No leakage；
(5) gob edge coal column is reinforced in advance；
(6) in order to strive for CO2It seals up for safekeeping and a possibility that fresh-water aquifer is preferably minimized, the CO of tight monitoring injection2Fluid
Migration trend, and establish the early warning mechanism and emergency preplan of system.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within be also intended to include these modifications and variations.
Claims (5)
1. a kind of seal CO up for safekeeping using coal mine waste mine goaf2Method, which comprises the following steps:
S1: selecting discarded coal mine, assesses CO2The ability and safety sealed up for safekeeping, it is complete according to goaf country rock and overlying rock
Whole degree and gas permeability determination seal pressure up for safekeeping accordingly, to be sealed up for safekeeping ability accordingly；
S2: to the security risk of discovery by strata control, stay set and reinforce isolated coal pillar, setting divider wall, slip casting blocking are stitched
What gap carried out processing and artificial setting autonomous closure seals unit up for safekeeping；
S3: it is determined according to storage condition and seals pressure, temperature, injection flow parameter up for safekeeping；
S4: the CO that will be obtained from ground fixed discharge source by separation and concentration2Space is sealed up for safekeeping according to the injection of parameter described in S3；
S5: piezometric well is transformed into underground CO using field with "nine squares" internal drilling or pit shaft2The situation of sealing up for safekeeping is monitored.
2. according to claim 1 seal CO up for safekeeping using coal mine waste mine goaf2Method, which is characterized in that the S4
In seal up for safekeeping space include Main Reservoirs and auxiliary reservoir；
The Main Reservoirs are the discarded permanent development work in caving zone hole and underground and chamber；The auxiliary reservoir is to emit
Fall pressure caused by abandoned coal pillar initial fissure and mining influence in the fissure zone, field with "nine squares" that crack with top base object model rock stratum constitutes
Crack.
3. according to claim 2 seal CO up for safekeeping using coal mine waste mine goaf2Method, which is characterized in that it is described auxiliary
Helping reservoir further includes that the absorption on rock particles surface is sealed up for safekeeping, the dissolution of underground water is sealed up for safekeeping, CO2Chemical reaction occurs with rock to generate
Carbonate is sealed up for safekeeping to be sealed up for safekeeping with underground water waterpower trap.
4. according to claim 1 seal CO up for safekeeping using coal mine waste mine goaf2Method, which is characterized in that the S1
Middle assessment CO2The ability sealed up for safekeeping uses following computation model:
Assuming that goaf meets the requirement for covering closed cap rock and depth, CO can be used as2Seal reservoir up for safekeeping:
If productive area is s, coal seam thickness m, then goaf volume is s × m after seam mining；
If immediate roof thickness be h, then coal seam directly push up be caving after, the initial stacking volume of goaf rock be s × (m+h), gap
Volume is s × m；
If earth's surface final subsidence amount is y, then residual clearance volume in goaf is s × (m+h-y)-s × h=s × (m-y)；
If CO2Sealing density up for safekeeping isThen goaf gap CO2The amount of sealing up for safekeeping is
The then goaf residual clearance CO that unit yield provides2Seal ability up for safekeeping are as follows:
Y/m is defined as subsidence coefficient q
Then:
In formula:
The CO that Q-unit yield provides2The amount of sealing up for safekeeping, t；
—CO2Seal density, t/m up for safekeeping3；
ρm- raw coal buries density, t/m3；
Q-subsidence coefficient, i.e. the ratio between earth's surface final subsidence amount and seam mining thickness.
5. according to claim 1 seal CO up for safekeeping using coal mine waste mine goaf2Method, which is characterized in that the S4
Specific steps are as follows: will be from CO2The CO of emission source discharge2It is collected by trapping workshop, then is compressed by compression plant,
Compressed CO2Space, compressed CO are sealed up for safekeeping by the discarded coal mine of compression injection workshop injection2It can also keep in
In storage workshop, reinject mine later seals space up for safekeeping.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118992.0A CN109812293A (en) | 2019-02-18 | 2019-02-18 | It is a kind of to seal CO up for safekeeping using coal mine waste mine goaf2Method |
| CN202310912582.XA CN116816439A (en) | 2019-02-18 | 2019-02-18 | Method for sealing CO2 by using goaf of abandoned coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118992.0A CN109812293A (en) | 2019-02-18 | 2019-02-18 | It is a kind of to seal CO up for safekeeping using coal mine waste mine goaf2Method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310912582.XA Division CN116816439A (en) | 2019-02-18 | 2019-02-18 | Method for sealing CO2 by using goaf of abandoned coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109812293A true CN109812293A (en) | 2019-05-28 |
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ID=66606848
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310912582.XA Pending CN116816439A (en) | 2019-02-18 | 2019-02-18 | Method for sealing CO2 by using goaf of abandoned coal mine |
| CN201910118992.0A Pending CN109812293A (en) | 2019-02-18 | 2019-02-18 | It is a kind of to seal CO up for safekeeping using coal mine waste mine goaf2Method |
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| CN202310912582.XA Pending CN116816439A (en) | 2019-02-18 | 2019-02-18 | Method for sealing CO2 by using goaf of abandoned coal mine |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110344877A (en) * | 2019-08-02 | 2019-10-18 | 新疆大学 | The method of carbon dioxide gas is stored in the goaf of porous media filling |
| CN112377259A (en) * | 2020-11-10 | 2021-02-19 | 煤炭科学技术研究院有限公司 | Judgment method for gas trap formation and calculation method for trapped gas resource quantity |
| CN113101789A (en) * | 2021-04-27 | 2021-07-13 | 珞珈环讯环境科技(北京)有限公司 | Method and structure for sealing carbon dioxide by utilizing open pit and mining method |
| CN113217100A (en) * | 2021-06-02 | 2021-08-06 | 内蒙古科技大学 | Method for sealing and storing carbon dioxide by using waste mine |
| CN113404538A (en) * | 2021-06-30 | 2021-09-17 | 苗春光 | System and method for sealing and storing carbon dioxide based on coal mine goaf |
| CN113460562A (en) * | 2021-06-29 | 2021-10-01 | 国家能源集团国源电力有限公司 | Method for sealing coal-electricity fly ash in abandoned mined-out space of coal mine |
| CN113735500A (en) * | 2021-10-12 | 2021-12-03 | 山东科技大学 | Porous spherical particles, preparation method and application thereof in mine goaf |
| CN113775376A (en) * | 2021-08-17 | 2021-12-10 | 西安科技大学 | In-situ pyrolysis and CO of oil-rich coal2Geological sealing and storing integrated method |
| CN114017108A (en) * | 2021-11-04 | 2022-02-08 | 河南理工大学 | Gangue functional type partially-filled coal mine underground reservoir |
| CN114186322A (en) * | 2021-12-15 | 2022-03-15 | 安徽理工大学 | Mining earth surface deformation damage blocking control method for thick unconsolidated formation mining area |
| CN114575800A (en) * | 2022-05-05 | 2022-06-03 | 太原理工大学 | Flue gas in-situ deep supercritical sealing and storing method |
| CN115144289A (en) * | 2022-03-22 | 2022-10-04 | 中国石油大学(华东) | Determination of CO 2 Site test device and method for geological sequestration key engineering parameters |
| CN115306479A (en) * | 2022-08-23 | 2022-11-08 | 中国矿业大学 | CO based on abandoned mine goaf 2 Block sealing method |
| US20240035382A1 (en) * | 2021-06-30 | 2024-02-01 | China University Of Mining And Technology, Beijing | Fluidized coal mining method for implementing co2 underground storage |
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| CN117819119B (en) * | 2024-03-06 | 2024-05-10 | 太原理工大学 | Continuous integrated device and method for trapping, sealing and separating underground rock stratum of flue gas |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344877A (en) * | 2019-08-02 | 2019-10-18 | 新疆大学 | The method of carbon dioxide gas is stored in the goaf of porous media filling |
| CN112377259A (en) * | 2020-11-10 | 2021-02-19 | 煤炭科学技术研究院有限公司 | Judgment method for gas trap formation and calculation method for trapped gas resource quantity |
| CN113101789B (en) * | 2021-04-27 | 2022-04-19 | 珞珈环讯环境科技(北京)有限公司 | Method and structure for sealing carbon dioxide by utilizing open pit and mining method |
| CN113101789A (en) * | 2021-04-27 | 2021-07-13 | 珞珈环讯环境科技(北京)有限公司 | Method and structure for sealing carbon dioxide by utilizing open pit and mining method |
| CN113217100A (en) * | 2021-06-02 | 2021-08-06 | 内蒙古科技大学 | Method for sealing and storing carbon dioxide by using waste mine |
| CN113217100B (en) * | 2021-06-02 | 2024-02-09 | 内蒙古科技大学 | Method for sealing carbon dioxide by using waste mine |
| CN113460562A (en) * | 2021-06-29 | 2021-10-01 | 国家能源集团国源电力有限公司 | Method for sealing coal-electricity fly ash in abandoned mined-out space of coal mine |
| CN113460562B (en) * | 2021-06-29 | 2024-03-08 | 国家能源集团国源电力有限公司 | Method for sealing and storing coal-electricity fly ash in abandoned coal mining space |
| CN113404538B (en) * | 2021-06-30 | 2024-05-03 | 苗春光 | System and method for sealing carbon dioxide based on coal mine goaf |
| CN113404538A (en) * | 2021-06-30 | 2021-09-17 | 苗春光 | System and method for sealing and storing carbon dioxide based on coal mine goaf |
| US20240035382A1 (en) * | 2021-06-30 | 2024-02-01 | China University Of Mining And Technology, Beijing | Fluidized coal mining method for implementing co2 underground storage |
| CN113775376B (en) * | 2021-08-17 | 2023-06-02 | 西安科技大学 | In-situ pyrolysis and CO (carbon monoxide) of oil-rich coal 2 Geological storage integrated method |
| CN113775376A (en) * | 2021-08-17 | 2021-12-10 | 西安科技大学 | In-situ pyrolysis and CO of oil-rich coal2Geological sealing and storing integrated method |
| CN113735500A (en) * | 2021-10-12 | 2021-12-03 | 山东科技大学 | Porous spherical particles, preparation method and application thereof in mine goaf |
| CN114017108B (en) * | 2021-11-04 | 2024-02-02 | 河南理工大学 | Gangue functional type partial filling coal mine underground reservoir |
| CN114017108A (en) * | 2021-11-04 | 2022-02-08 | 河南理工大学 | Gangue functional type partially-filled coal mine underground reservoir |
| CN114186322A (en) * | 2021-12-15 | 2022-03-15 | 安徽理工大学 | Mining earth surface deformation damage blocking control method for thick unconsolidated formation mining area |
| CN115144289A (en) * | 2022-03-22 | 2022-10-04 | 中国石油大学(华东) | Determination of CO 2 Site test device and method for geological sequestration key engineering parameters |
| CN114575800A (en) * | 2022-05-05 | 2022-06-03 | 太原理工大学 | Flue gas in-situ deep supercritical sealing and storing method |
| CN115306479A (en) * | 2022-08-23 | 2022-11-08 | 中国矿业大学 | CO based on abandoned mine goaf 2 Block sealing method |
| CN115306479B (en) * | 2022-08-23 | 2023-06-09 | 中国矿业大学 | CO based on abandoned mine goaf 2 Block type sealing method |
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