CN106555607B - A kind of old goaf grouting filling control earth's surface residual settlement method - Google Patents
A kind of old goaf grouting filling control earth's surface residual settlement method Download PDFInfo
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- CN106555607B CN106555607B CN201611093416.8A CN201611093416A CN106555607B CN 106555607 B CN106555607 B CN 106555607B CN 201611093416 A CN201611093416 A CN 201611093416A CN 106555607 B CN106555607 B CN 106555607B
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- goaf
- grouting filling
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- grouting
- filling
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005553 drilling Methods 0.000 claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 239000013589 supplement Substances 0.000 claims abstract description 4
- 238000005065 mining Methods 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/005—Monitoring or checking of cementation quality or level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Quality & Reliability (AREA)
- Geophysics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of old goaf grouting filling control earth's surface residual settlement methods, comprising the following steps: 1) collects old goaf basic parameter and information；2) calculate in old goaf can grouting filling spatial altitude；3) construction ground drills, and constructs several group of vertical drilling from the earth's surface of old above goaf to goaf；4) flushing liquor total loss in hole is such as encountered in drilling process, then stop creeping into, and implement grouting filling this layer of position, after grouting pressure to be formed, stops grouting filling, be changed to continue to creep into downwards, so circulation, until getting into seat earth, and implement last wheel grouting filling, to complete old goaf filling；5) supplement grouting filling is carried out.The present invention implements grouting filling using surface drilling, remaining crack that can effectively in sensible old goaf, and the connection packing job space without large area can reach filling effect.
Description
Technical field
The present invention relates to field of mining, in particular to a kind of old goaf grouting filling control earth's surface residual settlement method.
Background technique
With the continuous development of the economy and society, urban construction scale is gradually increased, and more and more proposed buildings are (such as
House, workshop etc.) it is located at the old above goaf of coal mine.Since to still have part residual in old goaf and its top fracture rock mass
Remaining gap, over time and under proposed building load (such as gravity) effect, rock stratum may be again in old goaf
Compacting, causes rock stratum and earth's surface residual settlement occur, brings biggish security risk to top building.Therefore, to old mined out
Being administered, controlling earth's surface residual settlement is the important measures for guaranteeing New Buildings safety in such region.In prior art
The method of many coal working face brackets rear goaf filling is disclosed, these technologies are required to safeguard large volume of connection
Mined out space can implement to fill, but the almost all sillar that is broken is full of in old goaf, it is difficult to form the company of large area
Logical packing job space.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of old goaf grouting filling control earth's surface residual settlement sides
Method, to solve the above-mentioned many defects caused by the prior art.
To achieve the above object, the present invention provides technical solution below: a kind of old goaf grouting filling control earth's surface
Residual settlement method, comprising the following steps:
1) old goaf basic parameter and information are collected, including limit of mining, mining height M, mined out section length, goaf are wide
Degree, can grouting filling height, adopt depth, surface subsidence amount S, caving zone height h；
2) calculate in old goaf can grouting filling spatial altitude, value be mining height M successively subtract surface subsidence amount S,
The goaf limit remnants obtained difference of broken bulk (0.03~0.05) h；
3) construction ground drills, and constructs several group of vertical drilling from the earth's surface of old above goaf to goaf, drilling
Spacing along old goaf length direction is 50~100m, and drilling number is mined out section length divided by the spacing of wells；
4) flushing liquor total loss in hole is such as encountered in drilling process, then stops creeping into, and implements grouting filling this layer of position,
After grouting pressure to be formed, stop grouting filling, be changed to continue to creep into downwards, so recycle, until getting into seat earth, and real
Last wheel grouting filling is applied, to complete old goaf filling；
5) after implementing grouting filling to all drilled hole, construction ground drills within the scope of old dead zone, using core drill
Into, detect mortar thickness, if mortar thickness reach calculating infuse spatial altitude, show that grouting filling quality is met the requirements, it is no
Then, inlet well of constructing should be continued around inspection hole, carry out supplement grouting filling.
Preferably, in the step 1), using mined out sector width, mined out section length, can grouting filling height three multiply
Product determines grouting filling total amount.
Preferably, in the step 3), the whole hole that drills is constructed to goaf.
Preferably, in the step 4), grouting pressure should be less than the self weight of above goaf overlying strata.
Preferably, the radius of construction inlet well is 10-20m around the inspection hole.
Preferably, the drilling drilling and grouting filling are side brill marginal not, see leakage i.e. note mode.
It is using the beneficial effect of above technical scheme: the present invention and the direct placement method phase in coal working face bracket rear
Implement grouting filling using surface drilling than, the present invention, remaining crack that can effectively in sensible old goaf is not necessarily to big face
Long-pending connection packing job space, even if can also be bored by encryption in the old lesser situation of goaf internal crack degree of communication
Hole reaches effective filling in crack, thus can have the residual settlement of earth's surface in control control construction zone.
Detailed description of the invention
Fig. 1 is the schematic diagram of bored grouting filling of the present invention.
Wherein, 1-- drilling, the goaf 2--, 3-- grouting filling.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Fig. 1 shows a specific embodiment of the invention: a kind of old goaf grouting filling control earth's surface residual settlement method,
The following steps are included:
1) old goaf basic parameter and information are collected, including limit of mining, mining height M, 2 length of goaf, goaf 2 are wide
Degree, can grouting filling height, adopt depth, surface subsidence amount S, caving zone height h；
2) calculate in old goaf can grouting filling spatial altitude, value be mining height M successively subtract surface subsidence amount S,
The goaf limit remnants obtained difference of broken bulk (0.03~0.05) h；
3) construction ground drills, and constructs several group of vertical drilling 1 from the earth's surface of old above goaf to goaf, drilling
1 along old goaf length direction spacing be 50~100m, drilling 1 number be mined out section length divided by the spacing of wells；
4) flushing liquor total loss in hole is such as encountered in drilling process, then stops creeping into, and implements grouting filling this layer of position
3, after grouting pressure to be formed, stop grouting filling 3, be changed to continue to creep into downwards, so recycles, until seat earth is got into,
And implement last wheel grouting filling, to complete old goaf filling；
5) after implementing grouting filling to all drilled hole, construction ground drills within the scope of old dead zone, using core drill
Into, detect mortar thickness, if mortar thickness reach calculating infuse spatial altitude, show that grouting filling quality is met the requirements, it is no
Then, inlet well of constructing should be continued around inspection hole, carry out supplement grouting filling.
In step 1), using mined out sector width, mined out section length, can the product of grouting filling height three determine that slip casting is filled
Fill out total amount；In step 3), the whole hole that drills is constructed to goaf；In step 4), grouting pressure should be less than above goaf overlying strata
Self weight.
The radius of construction inlet well is 10-20m around inspection hole；Drilling drilling and grouting filling are side brill marginal not, see
Leakage is note mode.
For the present invention compared with the direct placement method in coal working face bracket rear, the present invention implements slip casting using surface drilling
Filling, remaining crack that can effectively in sensible old goaf, without the connection packing job space of large area, even if old
In the lesser situation of goaf internal crack degree of communication, effective filling in crack can also be reached by encrypting drilling, thus can be with
There is the residual settlement of earth's surface in control control new building object area.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection scope.
Claims (6)
1. a kind of old goaf grouting filling control earth's surface residual settlement method, which comprises the following steps:
1) collect old goaf basic parameter and information, including limit of mining, mining height M, mined out section length, mined out sector width, can
Grouting filling height adopts depth, surface subsidence amount S, caving zone height h；
2) calculate in old goaf can grouting filling spatial altitude, value is that mining height M successively subtracts surface subsidence amount S, mined out
Area's limit remnants obtained difference of broken bulk (0.03~0.05) h；
3) construction ground drills, and constructs several group of vertical drilling from the earth's surface of old above goaf to goaf, drills along old
The spacing of goaf length direction is 50~100m, and drilling number is mined out section length divided by the spacing of wells；
4) flushing liquor total loss in hole is such as encountered in drilling process, then stops creeping into, and implements grouting filling this layer of position, to shape
After grouting pressure, stop grouting filling, be changed to continue to creep into downwards, so recycle, until getting into seat earth, and implements most
Latter wheel grouting filling, to complete old goaf filling；
5) after implementing grouting filling to all drilled hole, construction ground drills within the scope of old dead zone, is crept into using coring, examines
Survey mortar thickness, if mortar thickness reach calculating infuse spatial altitude, show that grouting filling quality is met the requirements, otherwise,
Continue inlet well of constructing around inspection hole, carries out supplement grouting filling.
2. old goaf grouting filling control earth's surface residual settlement method according to claim 1, which is characterized in that described
In step 1), using mined out sector width, mined out section length, can the product of grouting filling height three determine grouting filling total amount.
3. old goaf grouting filling control earth's surface residual settlement method according to claim 1, which is characterized in that described
In step 3), the whole hole that drills is constructed to goaf.
4. old goaf grouting filling control earth's surface residual settlement method according to claim 1, which is characterized in that described
In step 4), grouting pressure should be less than the self weight of above goaf overlying strata.
5. old goaf grouting filling control earth's surface residual settlement method according to claim 1, which is characterized in that described
The radius of construction inlet well is 10-20m around inspection hole.
6. old goaf grouting filling control earth's surface residual settlement method according to claim 1, which is characterized in that described
Drilling drilling and grouting filling are side brill marginal not, see leakage i.e. note mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611093416.8A CN106555607B (en) | 2016-12-02 | 2016-12-02 | A kind of old goaf grouting filling control earth's surface residual settlement method |
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| CN201611093416.8A CN106555607B (en) | 2016-12-02 | 2016-12-02 | A kind of old goaf grouting filling control earth's surface residual settlement method |
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| CN106555607A CN106555607A (en) | 2017-04-05 |
| CN106555607B true CN106555607B (en) | 2019-02-22 |
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| CN106884676B (en) | 2017-04-19 | 2018-08-17 | 中国矿业大学 | A kind of well work subsidence area administering method of neighbouring opencut |
| CN107044280A (en) * | 2017-06-22 | 2017-08-15 | 中国矿业大学 | A kind of bored grouting detection method of mining overburden absciss layer distribution characteristics |
| CN108798769B (en) * | 2018-06-25 | 2020-06-02 | 山东科技大学 | Strip goaf integrated comprehensive treatment construction method |
| CN110425004A (en) * | 2019-08-16 | 2019-11-08 | 徐州中国矿大岩土工程新技术发展有限公司 | The floated guide and construction method in the underwater goaf of paste body filling |
| CN111794799A (en) * | 2020-07-16 | 2020-10-20 | 中煤天津设计工程有限责任公司 | Solid waste treatment technology for ground drilling, grouting and filling of old goaf |
| CN112746846B (en) * | 2021-02-05 | 2023-02-28 | 中煤科工集团西安研究院有限公司 | Non-settling coal mining method and device for mining and filling parallel with ground directional long drill hole |
| CN114396242B (en) * | 2021-12-23 | 2023-09-01 | 华北科技学院(中国煤矿安全技术培训中心) | Colliery gas drainage hole sealing device convenient to adjust |
| CN114607379B (en) * | 2022-03-28 | 2022-12-13 | 中国矿业大学 | Continuous mining method for overlying strata compaction grouting filling |
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