CN202578782U - Downcast pipe used for rich water powder fine sand layer - Google Patents
Downcast pipe used for rich water powder fine sand layer Download PDFInfo
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- CN202578782U CN202578782U CN 201220202486 CN201220202486U CN202578782U CN 202578782 U CN202578782 U CN 202578782U CN 201220202486 CN201220202486 CN 201220202486 CN 201220202486 U CN201220202486 U CN 201220202486U CN 202578782 U CN202578782 U CN 202578782U
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- pipe
- fine sand
- sand layer
- downcomer
- pigment fine
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Abstract
The utility model relates to the technical field of tunnel excavation, and discloses a downcast pipe used for a rich water powder fine sand layer. The downcast pipe comprises a sleeve, a strainer and a filter screen, wherein the pipe wall of the sleeve is provided with multi-circle water seepage ring holes, and the water seepage ring holes are formed by multiple weep holes which are uniformly arranged; one end of the sleeve is provided with a taper shape closed end, and the inner wall of the other end of the sleeve and the outer wall of the one end of the strainer are connected into a whole; the strainer is placed in the sleeve, the filter screen is closely packed on an end socket of the other end of the strainer, and the filter screen can fully cover a filter hole on the pipe wall of the perforated pipe; and the downcast pipe can bury through aiming at a rich water powder fine sand layer, and the construction requirement on the downcast of the rich water powder fine sand layer is effectively met.
Description
[technical field]
The utility model relates to the tunnel excavation technical field, especially relates to a kind of downcomer that is used for to rich pigment fine sand layer precipitation.
[background technology]
Known, Fu Shui does not become rock dust packsand layer to claim rich pigment fine sand layer again, and this rock stratum is extremely unstable because of being rich in moisture content; When excavating rich pigment fine sand layer in the work progress in tunneling; Rich pigment fine sand layer very easily is stream and moulds the shape modification, thereby sand in construction, occurs gushing, slip the phenomenon of collapsing, and is light then cause the preliminary bracing in tunnel to be out of shape; Jeopardize construction safety; Heavy then cause the tunnel to cave in, cause security incident, and then badly influence construction period, workmanship and production safety and the cost of production etc. in tunnel; At present, when meeting with rich pigment fine sand layer in the process in tunneling, in order to reach the purpose of excavation moulding; Generally all need implement precipitation in advance; And, particularly, all need bury downcomer in advance underground to the performing of precipitation well point in order to strengthen the validity of rich pigment fine sand layer precipitation; But; Since rich pigment fine sand layer in the domestic constructing tunnel of China difficulty meet, therefore, do not have effectively to be directed against the downcomer that rich pigment fine sand layer is buried underground traditionally; Be that existing downcomer can't be poor at self-stability, be prone in the rich pigment fine sand layer of quicksand and bury underground.
[summary of the invention]
In order to overcome the deficiency in the background technology, the utility model provides a kind of downcomer that is used for rich pigment fine sand layer, and described downcomer can be buried underground to rich pigment fine sand layer, thereby has effectively satisfied the construction requirement to rich pigment fine sand layer precipitation.
For realizing the foregoing invention purpose, the utility model adopts following technical scheme:
A kind of downcomer that is used for rich pigment fine sand layer, described downcomer comprises sleeve pipe, filter pipe and filter screen; The tube wall of said sleeve pipe has the many circle infiltrations of being provided with of spacing annular distance, and the infiltration annular distance is made up of a plurality of evenly distributed infiltration holes; Sleeve pipe one end is made as coniform blind end, and an end outer wall of the other end inwall of sleeve pipe and filter pipe connects as one; Described filter pipe places inside pipe casing, closely be enclosed with at least one metafiltration net in the other end termination of filter pipe, and filter screen covers the filter opening of filter pipe tube wall fully.
The described downcomer that is used for rich pigment fine sand layer, the spacing between described many circle infiltration annular distances is at least 30mm.
The described downcomer that is used for rich pigment fine sand layer, the circular cone end face of the coniform blind end of said sleeve pipe are provided with evenly distributed a plurality of infiltrations hole.
The described downcomer that is used for rich pigment fine sand layer, described infiltration bore dia is at least 5mm.
The described downcomer that is used for rich pigment fine sand layer, interval 5～10mm between the inwall of said sleeve pipe and the outer wall of filter pipe.
The described downcomer that is used for rich pigment fine sand layer, described filter screen are that the order number is the antirust antimagnetic steel silk screens of 60 purposes at least.
The described downcomer that is used for rich pigment fine sand layer, described sleeve pipe are that internal diameter is 42mm at least, and length is the seamless steel pipe of 3000mm at least.
The described downcomer that is used for rich pigment fine sand layer, described filter pipe are pvc pipe or PPR pipe.
Owing to adopted technique scheme, the utlity model has following beneficial effect:
The described downcomer that is used for rich pigment fine sand layer of the utility model can be embedded in rich pigment fine sand layer under the prerequisite of the rich pigment fine sand layer of not disturbance self-stability of trying one's best, thereby in the process of tunneling, has effectively satisfied the construction requirement to rich pigment fine sand layer precipitation.
[description of drawings]
Fig. 1 is the sketch map of the utility model.
Among the figure: 1, sleeve pipe; 2, infiltration hole; 3, coniform blind end; 4, filter pipe; 5, filter screen; 6, filter opening.
[specific embodiment]
Can explain the utility model in more detail through following embodiment, the purpose of open the utility model is intended to protect all variations and the improvement in the utility model scope, and the utility model is not limited to following embodiment;
In conjunction with the accompanying drawing 1 described downcomer that is used for rich pigment fine sand layer, described downcomer comprises sleeve pipe 1, filter pipe 4 and filter screen 5; It is 42mm at least that described sleeve pipe 1 adopts internal diameter, and length is the seamless steel pipe of 3000mm at least, has guaranteed that promptly described downcomer has enough bulk strengths, thereby can be easy to buried underground in the into rich pigment fine sand layer; Form a complete set of for ease of filter pipe 4 and sleeve pipe 1, described filter pipe 4 adopts the material of PVC or PPR to process; The tube wall of said sleeve pipe 1 has the many circle infiltrations of being provided with of spacing annular distance, thereby makes the moisture content that is rich in the rich pigment fine sand layer of burying said downcomer underground seep water annular distance seepage flow to sleeve pipe 1 through these; Spacing between described many circle infiltration annular distances is at least 30mm, and the infiltration annular distance of each circle constitutes by the infiltration hole 2 that a plurality of evenly distributed diameters are at least 5mm, thereby when satisfying seepage flow moisture content, also can not reduce the bulk strength of said downcomer;
One end of said sleeve pipe 1 is made as coniform blind end 3, promptly utilizes the round wedge angle of this end that described downcomer can be driven in the rich pigment fine sand layer easily, thereby accomplishes burying underground of downcomer; For further strengthening the validity of rich pigment fine sand layer precipitation; A plurality of evenly distributed infiltration holes 2 can be set at the circular cone end face of sleeve pipe 1 coniform blind end 3, can directly discharge through the port of filter pipe 4 corresponding end thereby make seepage flow advance sleeve pipe 1 coniform blind end 3 inner moisture; For ease of filter pipe 4 and sleeve pipe 1 are got into completely synchronously, can the other end inwall of sleeve pipe 1 and an end outer wall of filter pipe 4 be connected as one; Described filter pipe 4 is being placed on sleeve pipe 1 inside through the end connection, and the interval between the outer wall of the inwall of sleeve pipe 1 and filter pipe 4 is made as 5～10mm; Filter pipe 4 is positioned at sleeve pipe 1 inner other end termination and closely is enclosed with the antirust antimagnetic steel wire gauze filter 5 of one deck 60 purposes at least; And filter screen 5 covers the filter opening 6 of filter pipe 4 tube walls fully; Be that seepage flow to sleeve pipe 1 interior moisture content is wanted earlier through the filtration of screen pack 5, in can managing through filter opening 6 seepage flow to filter pipe 4.
When implementing the described downcomer that is used for rich pigment fine sand layer of the utility model; Earlier the corresponding rich pigment fine sand layer of the round wedge angle of the coniform blind end 3 of described downcomer; Again described downcomer is squeezed in the into rich pigment fine sand layer; When the only remaining port position of described downcomer outside the time, should hold port to be communicated with corresponding water pump or vacuum pump, just can utilize water pump or vacuum pump to aspirate moisture content then.
Carefully not stating in the above content is prior art partly, does not state so run business into particular one.
Claims (8)
1. downcomer that is used for rich pigment fine sand layer, it is characterized in that: described downcomer comprises sleeve pipe (1), filter pipe (4) and filter screen (5); The tube wall of said sleeve pipe (1) has the many circle infiltrations of being provided with of spacing annular distance, and the infiltration annular distance is made up of a plurality of evenly distributed infiltration holes (2); Sleeve pipe (1) one end is made as coniform blind end (3), and an end outer wall of the other end inwall of sleeve pipe (1) and filter pipe (4) connects as one; Described filter pipe (4) places sleeve pipe (1) inside, closely is enclosed with at least one metafiltration net (5) in the other end termination of filter pipe (4), and filter screen (5) covers the filter opening (6) of filter pipe (4) tube wall fully.
2. the downcomer that is used for rich pigment fine sand layer according to claim 1 is characterized in that: the spacing between per two circles of described many circle infiltration annular distances is at least 30mm.
3. the downcomer that is used for rich pigment fine sand layer according to claim 1 is characterized in that: the circular cone end face of the coniform blind end (3) of said sleeve pipe (1) is provided with evenly distributed a plurality of infiltrations hole (2).
4. according to claim 1 or the 3 described downcomers that are used for rich pigment fine sand layer, it is characterized in that: described infiltration hole (3) diameter is at least 5mm.
5. the downcomer that is used for rich pigment fine sand layer according to claim 1 is characterized in that: interval 5～10mm between the outer wall of the inwall of said sleeve pipe (1) and filter pipe (4).
6. the downcomer that is used for rich pigment fine sand layer according to claim 1 is characterized in that: described filter screen (5) is the antirust antimagnetic steel silk screens of 60 purposes for the order number at least.
7. the downcomer that is used for rich pigment fine sand layer according to claim 1 is characterized in that: described sleeve pipe (1) is 42mm for internal diameter at least, and length is the seamless steel pipe of 3000mm at least.
8. the downcomer that is used for rich pigment fine sand layer according to claim 1 is characterized in that: described filter pipe (4) is pvc pipe or PPR pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202486 CN202578782U (en) | 2012-05-08 | 2012-05-08 | Downcast pipe used for rich water powder fine sand layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202486 CN202578782U (en) | 2012-05-08 | 2012-05-08 | Downcast pipe used for rich water powder fine sand layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202578782U true CN202578782U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220202486 Expired - Fee Related CN202578782U (en) | 2012-05-08 | 2012-05-08 | Downcast pipe used for rich water powder fine sand layer |
Country Status (1)
| Country | Link |
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| CN (1) | CN202578782U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979535A (en) * | 2012-12-27 | 2013-03-20 | 西南交通大学 | Drain-type pipe piece for tunnel lining |
| CN103422868A (en) * | 2013-08-06 | 2013-12-04 | 同济大学 | Structure and method for dissipating excess pore water pressure and reinforcing shield tunnel soil body |
| CN103628915A (en) * | 2013-11-28 | 2014-03-12 | 中铁十三局集团有限公司 | Dewatering and drainage method for large-section water-rich saturation fine-silt tunnel |
| CN103628888A (en) * | 2013-11-28 | 2014-03-12 | 中铁十三局集团有限公司 | Stability augmentation and solidification method for large-section water-rich saturation fine-silt railway tunnel |
| CN103912002A (en) * | 2014-03-24 | 2014-07-09 | 昆山帝滤源塑管有限公司 | UPVC (ultra-rigid polyvinyl chloride) composite downcast pipe |
| CN108843385A (en) * | 2018-06-25 | 2018-11-20 | 河南理工大学 | One kind adopting the efficient leting speeper method and device of the aqueous roadway in the roof of mud stone |
| CN110374620A (en) * | 2019-08-25 | 2019-10-25 | 贵州大学 | The exploitation of mining heading equipment is crushed header structure |
-
2012
- 2012-05-08 CN CN 201220202486 patent/CN202578782U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979535A (en) * | 2012-12-27 | 2013-03-20 | 西南交通大学 | Drain-type pipe piece for tunnel lining |
| CN102979535B (en) * | 2012-12-27 | 2015-12-02 | 西南交通大学 | Draining type section of jurisdiction is used in a kind of tunnel lining |
| CN103422868A (en) * | 2013-08-06 | 2013-12-04 | 同济大学 | Structure and method for dissipating excess pore water pressure and reinforcing shield tunnel soil body |
| CN103422868B (en) * | 2013-08-06 | 2015-10-21 | 同济大学 | The structure of a kind of Super-void Water Pressure that dissipates, reinforcing shield tunnel soil body and method |
| CN103628915A (en) * | 2013-11-28 | 2014-03-12 | 中铁十三局集团有限公司 | Dewatering and drainage method for large-section water-rich saturation fine-silt tunnel |
| CN103628888A (en) * | 2013-11-28 | 2014-03-12 | 中铁十三局集团有限公司 | Stability augmentation and solidification method for large-section water-rich saturation fine-silt railway tunnel |
| CN103912002A (en) * | 2014-03-24 | 2014-07-09 | 昆山帝滤源塑管有限公司 | UPVC (ultra-rigid polyvinyl chloride) composite downcast pipe |
| CN108843385A (en) * | 2018-06-25 | 2018-11-20 | 河南理工大学 | One kind adopting the efficient leting speeper method and device of the aqueous roadway in the roof of mud stone |
| CN110374620A (en) * | 2019-08-25 | 2019-10-25 | 贵州大学 | The exploitation of mining heading equipment is crushed header structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA RAILWAY TUNNEL GROUP TECHNOLOGY RESEARCH CO. Free format text: FORMER OWNER: ZHONGTIE TUNNEL GROUP CO., LTD. Effective date: 20140603 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140603 Address after: 471009 Luoyang City, the old town of Henan champion Red Road, No. 3 Patentee after: China Railway Tunnel Group Technology Research Co., Ltd. Address before: 471009 Luoyang City, the old town of Henan champion Red Road, No. 3 Patentee before: Zhongtie Tunnel Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20190508 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |