CN103233764B - Anti-cracking air return vertical shaft fan drift - Google Patents
Anti-cracking air return vertical shaft fan drift Download PDFInfo
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- CN103233764B CN103233764B CN201310127939.XA CN201310127939A CN103233764B CN 103233764 B CN103233764 B CN 103233764B CN 201310127939 A CN201310127939 A CN 201310127939A CN 103233764 B CN103233764 B CN 103233764B
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Abstract
The invention discloses an anti-cracking air return vertical shaft fan drift and solves the problem that cracks are apt to generate at the connection position of the existing fan drift and an air return vertical shaft and the connection position of the fan drift and a ground air flue. The anti-cracking air return vertical shaft fan drift is characterized in that an anti-skidding step (9) is fixedly arranged on the inclined outer side surface (7) of the bottom surface of a fan drift straight-line section (6); a horizontal step surface (19) of the anti-skidding step (9) and a vertical step surface of the anti-skidding step (9) are both connected with surrounding rocks (8) located below the fan drift in butting mode; a buffer pad layer (15) is arranged between the bottom surface of a ground air flue (11) and the ground; a square gap (13) is arranged on a flue body of the ground air flue (11); a bitumen hemp thread filler (14) is arranged in the square gap (13); and the distance between the square gap (13) and an outer end outlet (12) of a fan drift arc section (10) is 2 meters. The anti-cracking air return vertical shaft fan drift overcomes the defect of fan drift crack generation and reduces unnecessary air leakage.
Description
Technical field
The present invention relates to the wind cave on a kind of return air shafts of colliery, particularly a kind of return air shafts wind cave preventing wind cave and return air shafts junction from ftractureing.
Background technology
Coal mine return air vertical in depth is generally communicated with ground fan air channel by wind cave.For reducing flowing resistance, the angle between wind cave and return air shafts generally gets 40 degree to 45 degree, and therefore, the junction of return air shafts and wind cave belongs to region of stress concentration, easily forms crack.Simultaneously, in order to reduce surface air leakage, general by wind cave end opening, namely wind cave and return air shafts junction are arranged in the place that distance designs terrace 6 meters to less than 8 meters, in the use procedure of wind cave, the differential settlement of the different and foundation of the layer potential difference in the displacement changing of the relative positions of air-return vertical shaft, wind cave and air channel, ground, all can cause the junction of wind cave and return air shafts and wind cave and generation crack, junction, air channel, ground, badly influence the ventilation safety of mine.
Summary of the invention
The return air shafts wind cave of a kind of anticracking provided by the invention, solves the technical problem that the junction of existing wind cave and return air shafts and wind cave and junction, air channel, ground easily produce crack.
The present invention overcomes the above problems by the following technical programs:
A kind of return air shafts wind cave of anticracking, comprise cylindrical shape air-return vertical shaft, cylindrical shape air-return vertical shaft is provided with wind cave connector, wind cave is square wind cave straightway and cross section by cross section is that square wind cave arc section forms, the outer end entrance of wind cave straightway is fixedly communicated with the wind cave connector that cylindrical shape air-return vertical shaft is arranged, the outer end outlet of wind cave arc section is communicated with the one end in air channel, ground, the other end in air channel, ground is communicated with main cylinder blower fan, the outer side bottom surface face of the inclination of wind cave straightway is fixedly installed anti-skidding step, together with the horizontal stand terrace of anti-skidding step and the vertical stand terrace of anti-skidding step all abut against with the country rock below wind cave, cushion is provided with between the bottom surface and ground in air channel, ground, the stack shell in air channel, ground is provided with square gap, Bituminous hemp fiber obturator is provided with in square gap, distance between the outer end of square gap and wind cave arc section exports is 2 meters.
Angle between the outer side bottom surface face of the horizontal stand terrace of anti-skidding step and the inclination of wind cave straightway be and angle between cylindrical shape air-return vertical shaft and wind cave straightway remaining mutually, the width in square gap is 20-30 millimeter, and the width of the horizontal stand terrace of anti-skidding step is 1 meter.
The side of cylindrical shape air-return vertical shaft is provided with emergency exit, the top of cylindrical shape air-return vertical shaft is provided with Explosion-proof cap foundation base, Explosion-proof cap foundation base is provided with Explosion-proof cap.
The present invention has set up anti-skidding step on wind cave, and the stack shell in air channel, ground is provided with shrinkage joint, thus avoids the generation in wind cave crack, decreases unnecessary leaking out, improves fan efficiency, reduces blower fan power consumption.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
A kind of return air shafts wind cave of anticracking, comprise cylindrical shape air-return vertical shaft 1, cylindrical shape air-return vertical shaft 1 is provided with wind cave connector 5, wind cave is square wind cave straightway 6 and cross section by cross section is that square wind cave arc section 10 forms, the outer end entrance of wind cave straightway 6 is fixedly communicated with the wind cave connector 5 that cylindrical shape air-return vertical shaft 1 is arranged, the outer end outlet 12 of wind cave arc section 10 is communicated with the one end in air channel, ground 11, the other end in air channel, ground 11 is communicated with main cylinder blower fan 16, the outer side bottom surface face 7 of the inclination of wind cave straightway 6 is fixedly installed anti-skidding step 9, together with the horizontal stand terrace 19 of anti-skidding step 9 and the vertical stand terrace of anti-skidding step 9 all abut against with the country rock 8 below wind cave, cushion 15 is provided with between the bottom surface and ground in air channel, ground 11, the stack shell in air channel, ground 11 is provided with square gap 13, Bituminous hemp fiber obturator 14 is provided with in square gap 13, the outer end distance exported between 12 of square gap 13 and wind cave arc section 10 is 2 meters.
Angle 18 between the outer side bottom surface face 7 of the horizontal stand terrace of anti-skidding step 9 and the inclination of wind cave straightway 6 be and angle 17 between cylindrical shape air-return vertical shaft 1 and wind cave straightway 6 remaining mutually, the width in square gap 13 is 20-30 millimeter, and the width of the horizontal stand terrace 19 of anti-skidding step 9 is 1 meter.
The side of cylindrical shape air-return vertical shaft 1 is provided with emergency exit 2, the top of cylindrical shape air-return vertical shaft 1 is provided with Explosion-proof cap foundation base 3, Explosion-proof cap foundation base 3 is provided with Explosion-proof cap 4.
The present invention sets up anti-skidding step below wind cave tilting section basis, reduces the possibility of wind cave movement in the axial direction; Add shrinkage joint at the 2m place, circular curve top that wind cave is connected with air channel, wind cave and air channel, ground are flexibly connected, absorb the relative displacement because uneven settlement of foundation produces with shrinkage joint.Anti-skidding step adopts pouring concrete, and step is flat apart from generally getting 1.0 meters wide, and the gradient is the tangent value of the angle complementary angle of the pit shaft of wind cave and return air shafts, lays along wind cave tilting section total length.Expansion joint width generally gets 20-30 millimeter, and packing material can with Bituminous hemp fiber etc.
Claims (3)
1. the return air shafts wind cave of an anticracking, comprise cylindrical shape air-return vertical shaft (1), cylindrical shape air-return vertical shaft (1) is provided with wind cave connector (5), wind cave is square wind cave straightway (6) and cross section by cross section is that square wind cave arc section (10) forms, the outer end entrance of wind cave straightway (6) is fixedly communicated with the upper wind cave connector (5) arranged of cylindrical shape air-return vertical shaft (1), outer end outlet (12) of wind cave arc section (10) is communicated with the one end of air channel, ground (11), the other end in air channel, ground (11) is communicated with main cylinder blower fan (16), it is characterized in that, the outer side bottom surface face (7) of the inclination of wind cave straightway (6) is fixedly installed anti-skidding step (9), together with the horizontal stand terrace (19) of anti-skidding step (9) and the vertical stand terrace of anti-skidding step (9) all abut against with the country rock (8) below wind cave, cushion (15) is provided with between the bottom surface and ground of air channel, ground (11), the stack shell of air channel, ground (11) is provided with square gap (13), Bituminous hemp fiber obturator (14) is provided with in square gap (13), the outer end distance exported between (12) of square gap (13) and wind cave arc section (10) is 2 meters.
2. the return air shafts wind cave of a kind of anticracking according to claim 1, it is characterized in that, angle (18) between the outer side bottom surface face (7) of the horizontal stand terrace of anti-skidding step (9) and the inclination of wind cave straightway (6) be and angle (17) between cylindrical shape air-return vertical shaft (1) and wind cave straightway (6) remaining mutually, the width in square gap (13) is 20-30 millimeter, and the width of the horizontal stand terrace (19) of anti-skidding step (9) is 1 meter.
3. the return air shafts wind cave of a kind of anticracking according to claim 1 and 2, it is characterized in that, the side of cylindrical shape air-return vertical shaft (1) is provided with emergency exit (2), the top of cylindrical shape air-return vertical shaft (1) is provided with Explosion-proof cap foundation base (3), Explosion-proof cap foundation base (3) is provided with Explosion-proof cap (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127939.XA CN103233764B (en) | 2013-04-10 | 2013-04-10 | Anti-cracking air return vertical shaft fan drift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127939.XA CN103233764B (en) | 2013-04-10 | 2013-04-10 | Anti-cracking air return vertical shaft fan drift |
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| Publication Number | Publication Date |
|---|---|
| CN103233764A CN103233764A (en) | 2013-08-07 |
| CN103233764B true CN103233764B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310127939.XA Active CN103233764B (en) | 2013-04-10 | 2013-04-10 | Anti-cracking air return vertical shaft fan drift |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1717843A1 (en) * | 1988-12-07 | 1992-03-07 | Институт горного дела Севера Якутского филиала СО АН СССР | Method for protection of main fan duct from freezing in ventilation of north mines |
| CN102410044A (en) * | 2011-07-14 | 2012-04-11 | 鸡西司瑞电气有限公司 | Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief |
| CN203248181U (en) * | 2013-04-10 | 2013-10-23 | 山西晋城煤业集团勘察设计院有限公司 | Anti-cracking air return vertical shaft fan drift |
-
2013
- 2013-04-10 CN CN201310127939.XA patent/CN103233764B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1717843A1 (en) * | 1988-12-07 | 1992-03-07 | Институт горного дела Севера Якутского филиала СО АН СССР | Method for protection of main fan duct from freezing in ventilation of north mines |
| CN102410044A (en) * | 2011-07-14 | 2012-04-11 | 鸡西司瑞电气有限公司 | Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief |
| CN203248181U (en) * | 2013-04-10 | 2013-10-23 | 山西晋城煤业集团勘察设计院有限公司 | Anti-cracking air return vertical shaft fan drift |
Non-Patent Citations (3)
| Title |
|---|
| 急倾斜引风硐模板施工技术;郑永坤;《价值工程》;20120920;第31卷(第16期);全文 * |
| 矿井主通风机的性能测定;沈统谦等;《矿山机械》;20070910(第09期);全文 * |
| 立风井风硐及安全出口布置方式浅析;杜锋;《陕西煤炭技术》;19971231(第01期);全文 * |
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| CN103233764A (en) | 2013-08-07 |
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