CN203412629U - Artificial retaining dam of coal mine distributed type underground water reservoir - Google Patents
Artificial retaining dam of coal mine distributed type underground water reservoir Download PDFInfo
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- CN203412629U CN203412629U CN201320496155.XU CN201320496155U CN203412629U CN 203412629 U CN203412629 U CN 203412629U CN 201320496155 U CN201320496155 U CN 201320496155U CN 203412629 U CN203412629 U CN 203412629U
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Abstract
The utility model discloses an artificial retaining dam of a coal mine distributed type underground water reservoir. The artificial retaining dam comprises a bearing layer, an impermeable layer and a concrete structure layer which are sequentially formed in a service roadway from inside to outside, the concrete structure layer is embedded in a security coal pillar and/or surrounding rock around the service roadway. The concrete structure layer is embedded in a security coal pillar and/or surrounding rock around the service roadway, so that the artificial retaining dam and the security coal pillar are combined to form the retaining dam of the underground water reservoir. In addition, due to the multilayer design, the impermeable property and the structure strength can meet the water storage demand of the underground water reservoir.
Description
Technical field
The utility model relates to coal mining and hydraulic engineering crossing domain, relates in particular to the artificial checkdam of a kind of colliery distributed earth lower storage reservoir.
Background technology
The energy " Golden Triangle " (Jin, Shaanxi and Inner Mongolia sweet peaceful) coal resources have the features such as shallow overburden, thin basement rock and coal seam be thick, and within 2011, this area's coal production is 23.82 hundred million tons, accounts for 67.7% of national total output, has become the main producing region of coal resources in China.But, western " energy Golden Triangle " ecological environment frailty, the long-term drought in this area, shortage of water resources and spatial and temporal distributions are inhomogeneous.Take North Shaanxi as example, and this region is located in inland, and precipitation is rare, and evaporation capacity is large, and water resource is only 927 cubic metres per capita, is 35.7% of average national level, belongs to typical resource-type water-deficient area.
In this region, implement extensive high-intensity coal mining, unavoidably water resource is had a negative impact.Tunnel and goaf that coal mining forms, impact surface water and Groundwater movement, occurrence status, changed the circulation law of underground water, causes series of problems, as river cutout, groundwater table decline, spring flow falls sharply or dry.Fwaater resources protection becomes the bottleneck of " energy Golden Triangle " regional coal Sustainable Exploitation; and due to the constraint of this regional coal-seam geology occurrence condition; traditional water-retaining production technology (as filling method, limit for height exploitation) is difficult to effective enforcement, must further explore and study coal mining fwaater resources protection technology and the method for this region.At present main implementing measure is that mine water is arranged outward.It is multiple unfavorable that the outer row of mine water has, and caused on the one hand the profligacy of water resource, and mine water drains into ground outward and produces pollution on the other hand, and " energy Golden Triangle " local climate is arid, and evaporation capacity is large, and after outer row, mine water evaporates mostly, can not get effective utilization.
Therefore, the key technology of " energy Golden Triangle " regional water-retaining production be how to realize mine water not outside row, and underground mine exploitation can form goaf, if can be used to goaf, mine water in progress of coal mining is stored in this space, is aided with engineering measure simultaneously, realize water resource at underground filtration, purification, utilize boring to communicate with ground, for following water resource utilization provides condition.A plurality of water storages are connected by coal road or pipeline between goaf, form the groundwater storage space mutually connecting, i.e. colliery distributed earth lower storage reservoir.Dam body construction is the important component part of colliery distributed earth lower storage reservoir, has ensured the safety of water storage, simultaneously by constructing artificial checkdam, a plurality of goafs white silk is integral, utilize goaf depth displacement, realize mine water flowing freely in storehouse, mine water is carried out to purified treatment.
At present, about colliery distributed earth lower storage reservoir checkdam construction, there is no data reference.In < < safety regulations in coal mine > > and the anti-regulation > > that harnesses the river in < < colliery, standard has been carried out in the construction of sluice gate and floodgate wall, mainly, based on anti-angle of harnessing the river, do not consider the long term of groundwater reservoir water storage; Hydraulic engineering aspect, has done comparatively detailed regulation to the dam body construction of surface reservoir, but has obviously different from the construction of groundwater reservoir checkdam.Therefore, how to build that to build the artificial checkdam of colliery distributed earth lower storage reservoir significant.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of artificial checkdam of colliery distributed earth lower storage reservoir of simple in structure, stable performance is provided.
A technical scheme of the present utility model provides the artificial checkdam of a kind of colliery distributed earth lower storage reservoir, described artificial checkdam comprises supporting layer, impervious barrier and the concrete structure layer being from inside to outside formed on successively in adit, and described concrete structure layer is embedded in described adit safety pillar and/or country rock around.
Preferably, to embed the degree of depth of described safety pillar and/or described country rock be 30-80cm to described concrete structure layer.
Preferably, between described concrete structure layer and described safety pillar and/or described country rock, be provided with many anchor poles.
Preferably, the length of described anchor pole is 180-210cm, and the degree of depth that described anchor pole is inserted into described safety pillar and/or described country rock is 30-80cm.
Preferably, in described concrete structure layer, be provided with i iron, described i iron is " well " font.
Preferably, described supporting layer is that thickness is the brick mix structure layer of 1.5m.
Preferably, described impervious barrier is that thickness is spoil deck or the structure of loess layer of 2m.
Preferably, the cross section of described artificial checkdam is rectangle or arc, and the concave surface of the described artificial checkdam of arc is towards described groundwater reservoir.
Preferably, in described supporting layer, described impervious barrier and described concrete structure layer, be all reserved with the emergent hole of observation.
Adopt after technique scheme, there is following beneficial effect: owing to concrete structure layer being embedded in described adit safety pillar and/or country rock around, artificial checkdam is combined with safety pillar the checkdam that jointly forms groundwater reservoir.Owing to being Multi-layer design, its barrier performance and structural strength be the water storage demand of lower storage reservoir contentedly again.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of distributed earth lower storage reservoir in the utility model one embodiment;
Fig. 2 is the structural representation of artificial checkdam in the utility model one embodiment;
Fig. 3 is the sectional view of A-A in Fig. 2;
Fig. 4 is the structural representation of artificial checkdam in another embodiment of the utility model.
The Reference numeral table of comparisons:
1---adit 2---safety pillar 3---country rock
4---goaf 5---main lane 11---haulage drifts
12---return aircourse 13---connection roadway 10---supporting layers
20---impervious barrier 30---concrete structure layer 31---anchor poles
32---i iron 33---groove
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present utility model.
As shown in Figure 1; safety pillar 2 is for protection morphosequent, surface structures, structure and main roadway, prevents from subsiding, and separates ore field, field with "nine squares", aquifer, flame range and zone of fracture etc. and leaves the part ore body of not adopting or temporarily not adopting; play a supporting role, be positioned at the left and right sides of adit 1.Country rock 3(is referring to Fig. 3) form when being adit 1 driving, be positioned at the upper and lower sides of adit 1.Adit 1 comprises haulage drift 11 and return aircourse 12, between haulage drift 11 and return aircourse 12, by connection roadway 13, is communicated with.Haulage drift 11, when mine coal, plays the effect of transportation; Logical wind action, when mine coal, has been played in return aircourse 12.After working face mining is complete, between haulage drift 11 and return aircourse 12, form goaf 4, the overlying rock inbreak of adit 1, adit 1 forms groundwater reservoir together with goaf 4.In the utility model, safety pillar 2, between groundwater reservoir Yu Zhu lane 5, utilizes safety pillar 2 to form a part for groundwater reservoir dam body.Because adit 1 Yu Zhu lane 5 communicates, therefore only need the position between shutoff adit 1 Yu Zhu lane 5.
As shown in Figure 2, the artificial checkdam of colliery distributed earth lower storage reservoir in the utility model, comprise the supporting layer 10, impervious barrier 20 and the concrete structure layer 30 that are from inside to outside formed on successively in adit 1, concrete structure layer 30 is embedded in adit 1 safety pillar 2 and country rock 3 around.In the present embodiment, the brick mix structure layer that supporting layer 10 is 1.5m for thickness, spoil deck or structure of loess layer that impervious barrier 20 is 2m for thickness, the thickness of concrete structure layer 30 is 1.5m, the gross thickness of artificial checkdam is 5m.
" interior " in the utility model refers to a closely side of lower storage reservoir, and " outward " refers to the side near main lane 5.First floor from inside to outside, brick mix structure layer is born the effect of part dash, and top country rock 3 is formed to supporting role; The second layer, spoil or structure of loess layer are to utilize spoil and loess to form relative airtight wall body structure, play on the one hand antiseepage effect, have also saved the cost of artificial checkdam simultaneously, take full advantage of discarded object in process of coal mining as raw material.Concrete structure layer 30 itself has good barrier performance, the more important thing is that concrete structure layer 30 is embedded in the safety pillar 2 of adit 1 left and right sides and the country rock 3 of adit 1 upper and lower sides, has increased the intensity of artificial checkdam.
Preferably, the thickness of brick mix structure layer is not limited to 1.5m, and the thickness of spoil deck or structure of loess layer is not limited to 2m, and the thickness of concrete structure layer 30 is not limited to 1.5m.
Preferably, in spoil deck or structure of loess layer, can add Roc the impervious material such as to stop, strengthen the barrier performance of artificial checkdam.
Preferably, concrete structure layer 30 can only be embedded in safety pillar 2, also can only be embedded in country rock 3.
In the present embodiment, as shown in Figure 3, the degree of depth that concrete structure layer 30 embeds safety pillar 2 and country rock 3 is 30-80cm, and the direction of the degree of depth is identical with the width of concrete structure layer 30.Particularly, the degree of depth that concrete structure layer 30 embeds safety pillar 2 can be 50-80cm, and the degree of depth that concrete structure layer 30 embeds country rock 3 can be 30-60cm.Between concrete structure layer 30 and safety pillar 2 and country rock 3, be equipped with three anchor poles 31, the quantity of anchor pole 31 can also be for more than three, and many anchor poles 31 are intervally arranged, and can an anchor pole 31 be set every 20cm.The length of anchor pole 31 is 180-210cm, and the degree of depth that anchor pole 31 is inserted into safety pillar 2 and country rock 3 is 30-80cm.Particularly, the degree of depth that anchor pole 31 is inserted in safety pillar 2 can be 50-80cm, and the degree of depth that anchor pole 31 is inserted into country rock 3 can be 30-60cm.Anchor pole 31 will guarantee vertically simultaneously, to guarantee having good stability.Anchor pole 31 can play the effect that connects artificial checkdam and safety pillar 2 or country rock 3 by reinforced bar support, has further strengthened the intensity of artificial checkdam.
Preferably, anchor pole 31 can also only be formed between safety pillar 2 and concrete structure layer 30, also can only be formed between country rock 3 and concrete structure layer 30.Can also be that concrete structure layer 30 is embedded in safety pillar 2, between concrete structure layer 30 and country rock 3, insert anchor pole 31.Or concrete structure layer 30 is embedded in country rock 3, between concrete structure layer 30 and safety pillar 2, insert anchor pole 31.
In the present embodiment, as shown in Figure 3, in concrete structure layer 30, be also provided with i iron 32, i iron 32 is " well " font, be formed in whole concrete structure layer 30, longitudinally the length of i iron 32 equals the height of concrete structure layer 30, and laterally the length of i iron 32 equals the width of concrete structure layer 30.I iron can strengthen the intensity of artificial checkdam, enough keeps out the hydraulic pressure of groundwater reservoir.
Preferably, i iron 32 can also form other shapes, for example, is " rice " font or intersects to form in concrete structure layer 30.
In the present embodiment, the cross section of artificial checkdam is rectangle.
Preferably, as shown in Figure 4, the cross section of artificial checkdam can also be arc, and the concave surface of the artificial checkdam of arc is towards groundwater reservoir.Can effectively cushion unexpected hydraulic pressure and increase the impact to dam body.
Preferably, in supporting layer 10, impervious barrier 20 and concrete structure layer 30, be all reserved with the emergent hole of observation (not shown).For preventing in storehouse that the hydraulic pressure operation of uprushing to reservoir safety produces and threatens, there is dam break risk, at artificial checkdam correct position, the emergent hole of observation is set, effect comprises: the one, utilize this hole to observe sampling to hydraulic pressure water level and water quality etc. in storehouse; Utilize valve simultaneously, valve starting pressure is set, when hydraulic pressure is appraised and decided Security alert value over valve, automatic or manual startup, draining pressure release, ensures groundwater reservoir security of operation.
The damming method of the artificial checkdam of colliery distributed earth lower storage reservoir in the utility model, comprises the following steps:
Step S101: the position of building a dam of choosing artificial checkdam between the safety pillar 2 in adit 1;
Step S102: the supporting layer 10, the impervious barrier 20 that from inside to outside form successively in adit 1;
Step S103: fluting in the safety pillar 2 around being close to the adit 1 in impervious barrier 20 outsides and country rock 3, forms groove 33;
Step S104: squeeze into many anchor poles 31 in groove 33 in safety pillar and country rock;
Step S105: i iron 32 is embedded in groove 33;
Step S106: high-pressure injection concrete forms concrete structure layer 30 in groove 33.
The degree of depth of groove 33 can be 30-80cm, and adjusts according to periphery geological conditions and groundwater reservoir capacity.Particularly, the degree of depth of the groove 33 of safety pillar 2 can be 50-80cm, and the degree of depth of the groove 33 of country rock 3 can be 30-60cm.The advantage of the utility model damming method is identical with the advantage of above-mentioned artificial checkdam, at this, is not repeated.
Preferably, the step S101 that chooses the position of building a dam of artificial checkdam further comprises:
Step S201: utilize physical prospecting and probing means, treat coal petrography character, stratum, the structure of construction tunnel and explore;
Step S202: select the position of simple structure, coal petrography stable in properties as the position of building a dam of artificial checkdam.
Preferably, before the supporting layer forming successively in adit, the step S102 of impervious barrier, also comprise:
Step S301: estimate the hydraulic pressure in adit 1;
Step S302: the cross sectional shape of setting artificial checkdam according to hydraulic pressure.
When hydraulic pressure is higher, or the artificial checkdam in reservoir lower position can preferentially select arc, to cushion hydraulic pressure.The artificial checkdam of arc is when forming groove 33, and the groove 33 in country rock also forms arc.
Above-described is only principle of the present utility model and preferred embodiment.It should be pointed out that for the person of ordinary skill of the art, on the basis of the utility model principle, can also make some other modification, also should be considered as protection domain of the present utility model.
Claims (9)
1. the artificial checkdam of a colliery distributed earth lower storage reservoir, it is characterized in that, described artificial checkdam comprises supporting layer, impervious barrier and the concrete structure layer being from inside to outside formed on successively in adit, and described concrete structure layer is embedded in described adit safety pillar and/or country rock around.
2. artificial checkdam according to claim 1, is characterized in that, the degree of depth that described concrete structure layer embeds described safety pillar and/or described country rock is 30-80cm.
3. artificial checkdam according to claim 1, is characterized in that, between described concrete structure layer and described safety pillar and/or described country rock, is provided with many anchor poles.
4. artificial checkdam according to claim 3, is characterized in that, the length of described anchor pole is 180-210cm, and the degree of depth that described anchor pole is inserted into described safety pillar and/or described country rock is 30-80cm.
5. artificial checkdam according to claim 1, is characterized in that, in described concrete structure layer, is provided with i iron, and described i iron is " well " font.
6. artificial checkdam according to claim 1, is characterized in that, described supporting layer is that thickness is the brick mix structure layer of 1.5m.
7. artificial checkdam according to claim 1, is characterized in that, described impervious barrier is that thickness is spoil deck or the structure of loess layer of 2m.
8. artificial checkdam according to claim 1, is characterized in that, the cross section of described artificial checkdam is rectangle or arc, and the concave surface of the described artificial checkdam of arc is towards described groundwater reservoir.
9. artificial checkdam according to claim 1, is characterized in that, is all reserved with the emergent hole of observation in described supporting layer, described impervious barrier and described concrete structure layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496155.XU CN203412629U (en) | 2013-08-14 | 2013-08-14 | Artificial retaining dam of coal mine distributed type underground water reservoir |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320496155.XU CN203412629U (en) | 2013-08-14 | 2013-08-14 | Artificial retaining dam of coal mine distributed type underground water reservoir |
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| CN203412629U true CN203412629U (en) | 2014-01-29 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422886A (en) * | 2013-08-14 | 2013-12-04 | 中国神华能源股份有限公司 | Artificial retaining dam for coal mine distributed underground reservoir and damming method thereof |
| CN108060656A (en) * | 2017-11-29 | 2018-05-22 | 中国神华能源股份有限公司 | The artificial dam body of groundwater reservoir and coal column dam body connection structure and its construction technology |
| CN109236373A (en) * | 2018-08-27 | 2019-01-18 | 清华大学 | A kind of pervasive coal mine underground reservoir and its method of construction |
| CN109826667A (en) * | 2019-01-29 | 2019-05-31 | 中国矿业大学(北京) | The I-shaped checkdam of coal mine underground reservoir |
| CN110359957A (en) * | 2019-07-31 | 2019-10-22 | 国家能源投资集团有限责任公司 | A kind of dam body connection structure and its construction method |
| CN112681236A (en) * | 2020-12-23 | 2021-04-20 | 国能包头能源有限责任公司 | Artificial dam body of coal mine underground reservoir and design and construction method thereof |
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2013
- 2013-08-14 CN CN201320496155.XU patent/CN203412629U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422886A (en) * | 2013-08-14 | 2013-12-04 | 中国神华能源股份有限公司 | Artificial retaining dam for coal mine distributed underground reservoir and damming method thereof |
| WO2015021782A1 (en) * | 2013-08-14 | 2015-02-19 | 中国神华能源股份有限公司 | Man-made retaining dam for underground reservoir with coal mine distributed around, and damming method of same |
| US9689128B2 (en) | 2013-08-14 | 2017-06-27 | China Shenhua Energy Company Limited | Artificial dam of distributed coal mine underground reservoir and its constructing method |
| CN108060656A (en) * | 2017-11-29 | 2018-05-22 | 中国神华能源股份有限公司 | The artificial dam body of groundwater reservoir and coal column dam body connection structure and its construction technology |
| CN108060656B (en) * | 2017-11-29 | 2019-11-15 | 中国神华能源股份有限公司 | The artificial dam body of groundwater reservoir and coal column dam body connection structure and its construction technology |
| CN109236373A (en) * | 2018-08-27 | 2019-01-18 | 清华大学 | A kind of pervasive coal mine underground reservoir and its method of construction |
| CN109236373B (en) * | 2018-08-27 | 2024-04-16 | 清华大学 | Universal coal mine underground reservoir and construction method thereof |
| CN109826667A (en) * | 2019-01-29 | 2019-05-31 | 中国矿业大学(北京) | The I-shaped checkdam of coal mine underground reservoir |
| CN109826667B (en) * | 2019-01-29 | 2020-05-19 | 中国矿业大学(北京) | I-shaped water retaining dam for coal mine underground reservoir |
| CN110359957A (en) * | 2019-07-31 | 2019-10-22 | 国家能源投资集团有限责任公司 | A kind of dam body connection structure and its construction method |
| CN110359957B (en) * | 2019-07-31 | 2021-02-09 | 国家能源投资集团有限责任公司 | Dam body connecting structure and construction method thereof |
| CN112681236A (en) * | 2020-12-23 | 2021-04-20 | 国能包头能源有限责任公司 | Artificial dam body of coal mine underground reservoir and design and construction method thereof |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gu Dazhao Inventor after: Li Quansheng Inventor after: Chen Sushe Inventor after: Cao Zhiguo Inventor before: Gu Dazhao |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GU DAZHAO TO: GU DAZHAO LI QUANSHENG CHEN SUSHE CAO ZHIGUO |
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| CX01 | Expiry of patent term |
Granted publication date: 20140129 |
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| CX01 | Expiry of patent term |