CN206860195U - A kind of bottom arch filling overcoat of baseboard of coal mine roadway - Google Patents
A kind of bottom arch filling overcoat of baseboard of coal mine roadway Download PDFInfo
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- CN206860195U CN206860195U CN201720246193.8U CN201720246193U CN206860195U CN 206860195 U CN206860195 U CN 206860195U CN 201720246193 U CN201720246193 U CN 201720246193U CN 206860195 U CN206860195 U CN 206860195U
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- coal mine
- baseboard
- mine roadway
- packed layer
- overcoat
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Abstract
The utility model belongs to underground coal mine support technology field, and in particular to a kind of bottom arch overcoat of baseboard of coal mine roadway, including the packed layer being filled in the arch of bottom, the water barrier being arranged above packed layer；The bottom arch filling overcoat of the baseboard of coal mine roadway, it is divided into packed layer and water barrier, not only it compensate in the prior art, packing material is encircleed the bottom of as using castable, when pucking phenomenon occurs, the problem of pouring layer difficulty is rejected in secondary construction is carried out, and has the function that to prevent roadway floor from soaking soft argillization by ponding.
Description
Technical field
The utility model belongs to underground coal mine support technology field, and in particular to a kind of bottom arch protection of baseboard of coal mine roadway
Layer.
Background technology
It is that colliery, metal mine, subway, civil air defense constructions and installations and underground space engineering etc. are frequent that the bottom plate of tunnel or chamber, which is heaved,
The problem of running into.Especially coal mining when by mining pressure or pick lane when influenceed by secondary supercoated stress, tunnel or chamber
Surrounding convergent deformation is serious, and the amount of heaving of bottom plate reaches more than half of roof to floor convergence, and even up to 90%.Tunnel or cave
Every 2~3 months quantities with regard to needing to reprocess the quantities once, reprocessed or even exceed new pick tunnel in room.Excessive pucking amount
The useful area of tunnel or chamber is severely impacted, it is normally raw to threaten ventilation safety, drawing-off gas, transport of materials of mine etc.
Production system and related link, and be all severely impacted using the stability of roadway's sides and top plate after acting as a planted agent repeatedly, in horse
Head door nearby even the serious threat borehole wall stabilization, cause the borehole wall to slide.
Underground coal mine is more using the technology such as antiarch and gas pressure relief slot of excavation at present when handling tunnel bottom Gu phenomenons at present, is
Ensure that its design function is realized in tunnel, excavate need after antiarch and gas pressure relief slot again to fill roadway floor it is smooth, to reach in lane
In road the purpose of storage equipment, transport, mostly antiarch is entered according to a certain ratio into castable using cement, sand and stone
Row filling.But during using castable as antiarch filler, pouring layer need to be carried out when bottom Gu phenomenons occurs again in tunnel
Reject, constructional difficulties.
Utility model content
When the purpose of this utility model solves to use castable in the prior art as antiarch filler, tunnel goes out again
Pouring layer need to be rejected during existing bottom Gu phenomenons, the problem of constructional difficulties.
Therefore, the utility model provides a kind of bottom arch filling overcoat of baseboard of coal mine roadway, including it is filled in bottom arch
Interior packed layer, the water barrier being arranged above packed layer.
The packed layer is mainly mixed by cement with flyash to be formed.
The water barrier is mainly mixed by cement with flyash, then plus water-setting solid into.
The cement of the packed layer and the ratio of flyash are 1:3.
The cement of the water barrier and the ratio of flyash are 1:3.
The thickness of the water barrier is 20-30cm.
The beneficial effects of the utility model：The bottom arch filling protection of this baseboard of coal mine roadway provided by the utility model
Layer, is divided into packed layer and water barrier, not only compensate in the prior art, encircles packing material the bottom of as using castable, is occurring
During pucking phenomenon, the problem of pouring layer difficulty is rejected in secondary construction is carried out, and having prevents roadway floor from soaking pine by ponding
The effect of ooze.
The utility model is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the bottom arch filling overcoat schematic diagram of baseboard of coal mine roadway.
Fig. 2 is the close-up schematic view of the bottom arch filling overcoat of baseboard of coal mine roadway shown in Fig. 1.
In figure：1st, packed layer；2nd, water barrier.
Embodiment
For the technological means and effect that the utility model is reached predetermined purpose and taken is expanded on further, below in conjunction with accompanying drawing
And embodiment describes in detail as follows to specific embodiment of the present utility model, architectural feature and its effect.
During in order to use castable in the prior art as antiarch filler, there are need pair during the Gu phenomenons of bottom again in tunnel
Pouring layer is rejected, and the problem of constructional difficulties, the utility model provides a kind of described baseboard of coal mine roadway as shown in Figure 1, Figure 2
Bottom arch filling overcoat, including the packed layer 1 being filled in the arch of bottom, be arranged at the water barrier 2 of the top of packed layer 1.
Packed layer 1 is mainly mixed by cement with flyash to be formed；Water barrier 2 is mainly mixed by cement with flyash, then
Add water-setting solid into.
The ratio of packed layer 1, the cement of water barrier 2 and flyash is typically identical, test effect after practice of construction, cement with
The ratio of flyash is 1:Effect is best when 3；
The thickness of water barrier 2 is 20-30cm, and the depth of whole bottom arch so not only has typically at 1 to 1.5 meters
There is good water proof effect, and packed layer is much thicker than water barrier, and when ponding occurs, unnecessary water passes through water barrier
It can be absorbed by beneath packed layer, play a part of water suction, can prevent roadway floor from soaking soft argillization by ponding.
The bottom arch of the baseboard of coal mine roadway, which fills overcoat Specific construction, is：By flyash and cement according to 1:3 ratios are mixed
With it is uniform, be filled in antiarch, tread flyash and cement admixture side in filling, guarantee roadway floor intensity, filling
, it is necessary to add suitable quantity of water when batch mixing is filled by flyash and cement setting, as water proof when filling out antiarch top 20-30cm
Layer, accordingly even when when tunnel ponding oozed water barrier, bottom flyash is same with cement to have absorbent function, prevents roadway floor
Soft argillization is soaked by ponding.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (6)
- A kind of 1. bottom arch filling overcoat of baseboard of coal mine roadway, it is characterised in that：Including the packed layer being filled in the arch of bottom （1）, it is arranged at packed layer（1）The water barrier of top（2）.
- A kind of 2. bottom arch filling overcoat of baseboard of coal mine roadway as claimed in claim 1, it is characterised in that：The packed layer （1）Mainly mixed and formed with flyash by cement.
- A kind of 3. bottom arch filling overcoat of baseboard of coal mine roadway as claimed in claim 1, it is characterised in that：The water barrier （2）Mainly mixed by cement with flyash, then plus water-setting solid into.
- A kind of 4. bottom arch filling overcoat of baseboard of coal mine roadway as claimed in claim 2, it is characterised in that：The packed layer （1）Cement and flyash ratio be 1:3.
- A kind of 5. bottom arch filling overcoat of baseboard of coal mine roadway as claimed in claim 3, it is characterised in that：The water barrier （2）Cement and flyash ratio be 1:3.
- A kind of 6. bottom arch filling overcoat of baseboard of coal mine roadway as described in claim 1 or 3 or 5, it is characterised in that：It is described Water barrier（2）Thickness be 20-30cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246193.8U CN206860195U (en) | 2017-03-14 | 2017-03-14 | A kind of bottom arch filling overcoat of baseboard of coal mine roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246193.8U CN206860195U (en) | 2017-03-14 | 2017-03-14 | A kind of bottom arch filling overcoat of baseboard of coal mine roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860195U true CN206860195U (en) | 2018-01-09 |
Family
ID=60814696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720246193.8U Active CN206860195U (en) | 2017-03-14 | 2017-03-14 | A kind of bottom arch filling overcoat of baseboard of coal mine roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470576A (en) * | 2018-12-19 | 2019-03-15 | 临沂大学 | For simulating the pilot system and test method of buried structure Water Inrush |
-
2017
- 2017-03-14 CN CN201720246193.8U patent/CN206860195U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470576A (en) * | 2018-12-19 | 2019-03-15 | 临沂大学 | For simulating the pilot system and test method of buried structure Water Inrush |
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