CN104500123A - Rapid ventilation and smoke exhausting device and method for construction period of long-distance tunnel - Google Patents
Rapid ventilation and smoke exhausting device and method for construction period of long-distance tunnel Download PDFInfo
- Publication number
- CN104500123A CN104500123A CN201410810707.9A CN201410810707A CN104500123A CN 104500123 A CN104500123 A CN 104500123A CN 201410810707 A CN201410810707 A CN 201410810707A CN 104500123 A CN104500123 A CN 104500123A
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- wind
- ventilation
- tunnel
- air
- air door
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/10—Air doors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
Abstract
The invention provides a rapid ventilation and smoke exhausting device for a construction period of a long-distance tunnel. The rapid ventilation and smoke exhausting device comprises a gantry bracket, a fixed wind door and a movable wind door, an axial flow ventilator and a jet flow draught fan, and a motor control system, wherein the fixed wind door is arranged at the upper end of the gantry bracket and the movable wind door is arranged on one side of the gantry bracket; the axial flow ventilator and the jet flow draught fan penetrate through the fixed wind door; the fixed wind door is matched with the unfolded movable wind door so that the axial wind flow in the tunnel is separated; a wind inlet of the axial flow ventilator and a wind outlet of the jet flow draught fan are formed in one side, which is close to a working surface, of the fixed wind door; the wind outlet of the axial flow ventilator is connected with a flexible wind barrel; the wind outlet of the flexible wind barrel extends to the outer part of the tunnel. According to a ventilation and smoke exhausting method provided by the invention, the wind doors for separating the axial wind flow are arranged in the tunnel; a safe space and a closed polluted space are formed on the two sides of the wind doors respectively, and pollutants in the polluted space can be discharged out of a hole along an airflow through a closed exhausting channel by using ventilation equipment; blasting equipment is used for blasting wind into the polluted space from the safe space so that the pollutants rapidly flows towards the inlet of the ventilation equipment.
Description
Technical field
The present invention relates to tunnel construction technology, be specially a kind of long distance tunnel construction phase quick ventilation and exhaust device and method.
Background technology
Along with the high speed stable development of China's economic construction, there is increasing long distance tunnel in (as the industry such as water power, highway) in engineering construction, these long distance tunnels are in the employing conventional drilling and blasting method excavation construction phase, and ventilation smoke exhaust problem is one of difficult problem of puzzlement engineering always.For a long time, in long distance Tunnel excavation process, after excavation scope of operation distance tunnel mouth is more than 2 ~ 3Km, excavation ventilation smoke exhaust problem is just difficult to solve, especially after Excavation blasting operation, containing a large amount of CO, NO, NO
2in toxic and harmful and dust, adopt traditional draft type, these toxic and harmfuls and dust, from bursting work face, need flow through whole hole section of having excavated and discharge, and dirty wind injection is whole has excavated hole section, ventilation smoke exhaust was for up to 3 ~ 4 hours, having excavated air near the scope of operation does not flow or flows slowly, ventilation smoke exhaust weak effect, in addition, also be difficult to solve High-geotemperature problem near the scope of operation, construction operation bad environments.Therefore, construction period bad ventilation condition gently then makes numerous operating personnels be in for a long time in severe underground environment to work, life and health is affected, and life and health and the safety of operating personnel in heavy then serious threat, even has influence on construction of tunnel progress and duration.
Summary of the invention
For problems of the prior art, the invention provides a kind of reasonable in design, safe and reliable, easy to operate, ventilation smoke exhaust efficiency is high, effectively can improve long distance tunnel construction phase quick ventilation and exhaust device and the method for underground construction operating environment.
The present invention is achieved through the following technical solutions:
The present invention's one long distance tunnel construction phase quick ventilation and exhaust device, comprise gantry support, be separately positioned on the fixed throttle of gantry support upper end and the movable air door of its side, propeller fan and the jet blower of the upper end of gantry support is arranged on through fixed throttle, and the electric machine control system of movable air door, propeller fan and jet blower; Fixed throttle matches distinguished and admirable for the axis cut off in tunnel with the movable air door after expansion; The air intake vent of propeller fan and the air outlet of jet blower are arranged on the side of fixed throttle near the scope of operation, and the air outlet of propeller fan connects flexible air duct, and the air outlet of flexible air duct extends to tunnel outside.
Preferably, gantry support comprises support platform and support post, and support platform is frame construction, and lower end is at least symmetrical arranged four support posts, and upper end is coated with the gripper shoe be fixedly installed; Between the support post that the same sidewall of adjacent tunnel is arranged and the frame construction inside of support platform forms triangular support configurations by bracing piece; The support post bottom that the same sidewall of adjacent tunnel is arranged is fixed on the connecting plate that be arranged in parallel with canal axes jointly.
Further, supporting strut is arranged respectively the hydraulic cylinder being used for highly regulating, the cylinder body of support post and connecting plate difference connecting fluid cylinder pressure and piston rod; The hydraulic control system of hydraulic cylinder is arranged on gantry support, for controlling interlock operation or the separate operaton of each hydraulic cylinder.
Preferably, electric machine control system comprises the local switch board of the motor be arranged on gantry support, and is arranged on the motor long-distance control cabinet of home beyond blast area; The local switch board of motor and motor long-distance control cabinet are by wireless or wired connection communication.
Further, movable air door is arranged on the side of propeller fan air outlet, adopts layer flexible air curtain or is provided with the rolling-gate of chute.
Preferably, propeller fan is arranged on gantry support upper center, and jet blower is symmetricly set on the both sides of propeller fan; The air intake vent of propeller fan and the air outlet of jet blower are respectively arranged with protective screening.Flexible air duct is arranged along the hanging of tunnel top, and it arranges the transition of rigidity air duct and connects when corner is greater than 15 degree turning round.
The present invention's one long distance tunnel construction phase quick ventilation smoke exhaust method, arranges and cuts off axially distinguished and admirable air door, form closed pollution space between work plane and air door, form safe space at air door to tunnel portal in tunnel; Then the ventilation equipment through air door are utilized to be pumped to outside hole with air-flow by the air exhaust passage closed by the pollutant polluted in space, utilize simultaneously through air door blast apparatus by safe space to pollution space in air blast, make pollutant add the entrance of flow speed and direction ventilation equipment.
Preferably, air door comprises superposed standing part and lower removable part, in the construction period of non-blasting procedure, can open movable air door, be maintained across the ventilation equipment of standing part and the normal operation of blast apparatus, for working face cooling also carries out blowdown operation in real time.
Preferably, the position that air door is arranged is more than or equal to 50 meters from the distance of work plane, and is less than the ventilation critical distance of ventilation equipment and the air blast critical distance of blast apparatus.
Compared with prior art, the present invention has following useful technique effect:
Device of the present invention, by arrange fixed throttle and movable air door form mutual cooperation, cut off the axis in tunnel is distinguished and admirable, thus define the space of two relative closures, the Natural excrement of pollutant is blocked and isolates, and by gantry support, two air doors supported, fix and locate, ensure its action effect and structural strength; By the control of movable air door, can, while satisfied partition requires, ensure to avoid it when installation, transport, use to the interference of other operations and impact; The jet blower that recycling is arranged stirs dirt and pressurizes, the air intake vent of propeller fan can be gathered rapidly, be pumped to outside hole by its guiding through flexible air duct, realize the quick discharge to dirt, safe and reliable, simple to operate, efficiency of construction significantly improves, nearly needs just can complete the discharge of poisonous and hazardous dust and gas in hole for 10 ~ 20 minutes, and accelerate the gas flowing of work plane, improve exchange rate, reduce work plane temperature, ensure that the working environment that safety is good; The scope of application is wide, the requirement of quick ventilation smoke exhaust during can meeting the long distance tunnel construction of the various sections such as gateway opening shape, the shape of a hoof, rectangle, circle.
Further, arranged by the support platform of frame construction, stable and reliable supporting and location can be carried out to the fixed throttle of top, propeller fan and jet blower, there is provided installation and permanent position to the movable air door below it simultaneously, gripper shoe can form good supplementary partition between two air doors, and the triangular support configurations of setting can improve the rigidity of structure and the intensity of gantry support entirety; The connecting plate be equipped with, can ensure the mutual balance and stability between support post.
Further, the hydraulic cylinder arranged is utilized to carry out the adjustment of height, combining closely of fixed throttle and tunnel top can not only be ensured, and can adapt to and meet the bottom surface situation of different tunnel, improving its adaptation can, quick and easy for installation, utilize its hydraulic control system can realize flexibly being synchronized with the movement or independent adjustment.
Further, utilize the electric machine control system that split is arranged, meeting on the basis that motor controls in time, remote control can be realized, ensure that being perfectly safe of personnel.
Further, by the setting of rolling-gate, function and the operation of movable air door can be completed quickly and easily, to middle and lower part be vertical plane tunnel can carry out close coordinate, can realize intercepting and blocking to the tunnel of other form of fractures by the flexible air curtain of multilayer, meet the folding and unfolding of movable air door and stop requirement.
Further, utilize and the distribution of propeller fan and jet blower is equipped with, improve effect and the efficiency of its pump drainage, utilize the protective screening set up can the work safety of better proterctive equipment simultaneously, and dependability and life-span; By arranging the hanging of flexible air duct, avoiding the interference to tunnel miscellaneous equipment and personnel and construction, by the transition of rigidity air duct, ensure that its smooth and easy and pump drainage speed of ventilating.
Method of the present invention, first tunnel is carried out partition subregion, thus the dirt that originally will carry out spreading is carried out stops isolate, and concentrate in a less enclosure space, while can improving its air pressure inside, avoid leaking and pollution to other regions of dirt; By blast apparatus, air blast in pollution space is ensured while discharge pressure again, pollutant is stirred, the speed that work plane carries out interchange of heat can also be accelerated, utilize ventilation equipment to be discharged to outside hole by air exhaust passage by the gas stream of pollution of high concentration, thus ensure that safe space is not contaminated, the operation in it can synchronously be carried out, and the dirt polluting space is discharged thoroughly, fast, working face cooling is obvious, for subsequent handling provides good working environment and condition of work.
Further, when opening movable part, cooling and the real-time discharge to a small amount of dirt can be completed; And the distance arranged not only ensure that the safety of air door, and meets the job requirement of ventilation volume air blast, ensure that working effect, can work plane be passed and the operation of operation of discharging fume continuously fast.
Accompanying drawing explanation
Fig. 1 is the structure elevation of device described in example of the present invention.
Fig. 2 is the structure side view of Fig. 1.
Fig. 3 is the structure elevation of gantry support described in example of the present invention.
Fig. 4 is the structure side view of Fig. 3.
Fig. 5 is ventilation smoke exhaust fundamental diagram quick after blasting procedure described in the embodiment of the present invention.
Fig. 6 is A-A sectional drawing in Fig. 5.
Fig. 7 is other operation construction period ventilation smoke exhaust fundamental diagram in the embodiment of the present invention.
Fig. 8 is B-B sectional drawing in Fig. 7.
View when Fig. 9 is quick ventilation and exhaust device transfer in the embodiment of the present invention.
Figure 10 is C-C sectional drawing in Fig. 9.
In figure: 1 is gantry support; 2 is movable air door; 3 is jet blower; 4 is propeller fan; 5 is fixed throttle; 6 is hydraulic cylinder; 7 is hydraulic control system; 8,9,10 is the local switch board of motor controlling movable air door, jet blower and propeller fan respectively; 11 is motor long-distance control cabinet; 12 is H type i iron; 13 is bracing piece; 14 is connecting plate; 15 is gripper shoe; 16 is flexible air duct; 17 is protective screening.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, and the explanation of the invention is not limited.
The present invention's one long distance tunnel construction phase quick ventilation and exhaust device, as depicted in figs. 1 and 2, it comprises gantry support 1, is arranged on the ventilation unit on gantry support 1 and air door group, and controls the electric machine control system of ventilation unit and air door group respectively; As shown in Figure 3 and Figure 4, adopt H type i iron 12 to weld the support platform of gantry support 1 and support post is that example is described in this preferred embodiment, the bearing diagonal wherein utilizing channel-section steel to make bracing piece 13 pairs of gantry supports 1 to do to strengthen, forms triangular support configurations; Arrange the effect that the 14 pairs of gantry supports 1 of winning in succession adopting double flute steel to make play supplemental support in the bottom of gantry support 1 support post, the gripper shoe 15 adopting steel plate to make is welded on the support platform upper surface of gantry support 1; Ventilation unit comprises the propeller fan 4 be arranged in the middle part of gripper shoe 15 and the jet blower 3 being symmetricly set on propeller fan 4 both sides; Air door group comprises the fixed throttle 5 being arranged on gantry support 1 upper end and the movable air door 2 being arranged on gantry support 1 side.
Wherein, as depicted in figs. 1 and 2, electric machine control system comprises the local switch board 8,9,10 of motor, and motor long-distance control cabinet 11 two parts, for control movable air door 2 corresponding respectively, jet blower 3 and propeller fan 4; The local switch board 8,9,10 of motor is arranged on side, gantry support 1 bottom, is respectively used to control movable air door 2, jet blower 3 and propeller fan 4; Motor long-distance control cabinet 11 is arranged on the home beyond blast area, and general and scope of operation distance is greater than 200m.Wherein, propeller fan 4 and the air intake of jet blower 3 weld respectively be provided with together with reinforcing bar protective screening; The power of motor of propeller fan 4 is not less than 30Kw, adopts conversion system to start; The power of motor of jet blower 3 and movable air door 2 is not more than 30Kw, adopts direct Starting mode to start.
In the present invention, as shown in figures 1 and 3, the four piece support post bottoms of hydraulic cylinder 6 at gantry support 1 are set respectively, for controlling the lifting of gantry support 1 column; Gantry support 1 is provided with hydraulic control system 7, for controlling interlock between each hydraulic cylinder 6 or separate operaton, gantry support 1 synchronization lifting can be met or carry out the needs of angle adjustment.In this preferred embodiment, adopt hydraulic jack to be arranged on gantry support 1 column distance ground 0.6m At The Height as hydraulic cylinder 6, its rated load weight is 8 ~ 10t, and stroke is not less than 1.0m.
In this preferred embodiment, fixed throttle 5 adopts shaped steel and steel sheet to be welded, and it is arranged between propeller fan 4 and jet blower 3, and between gripper shoe 15 and hole push up.Movable air door 2 adopts electric steel-coil gate or multilayer canvas air curtain, and it is arranged on outside the gantry support 1 and side of close propeller fan 4 air outlet; When adopting electric steel-coil gate as movable air door 2, be also provided with the steel chute mated with it, for the lifting of electric steel-coil gate.
Concrete, as depicted in figs. 1 and 2, the present invention includes gantry support 1, movable air door 2,1 ~ 2 jet blower 3, propeller fan 4, fixed throttle 5.Large power shaft flow blow 4 is arranged on the center upper portion of gantry support 1, and make ventilation smoke exhaust direction towards outside hole, 1 ~ 2 jet blower 3 is arranged on the both sides of the upper axis flow blow 4 of gantry support 1, and making the air supply direction of jet blower 3 towards the scope of operation, during installation, large power shaft flow blow 4 all should be parallel with canal axes with the axis of jet blower 3; Fixed throttle 5 adopts channel-section steel and Plate Welding to form, and be weldingly fixed between the top of gantry support 1 and propeller fan 4, jet blower 3, movable air door 2 adopts the electric steel-coil gate of the thickening from specialized factory's customization, be arranged on propeller fan 4 air outlet side, be positioned at the middle and lower part of whole device, and join steel chute for rolling-gate lifting.Gantry support 1 of the present invention adopts height H type i iron 12, channel-section steel, double flute steel, Plate Welding to form, in four support post bottoms of gantry support 1, installed 1 rated load weight 8 ~ 10t respectively, hydraulic jack that stroke is greater than 1.0m, to realize the lifting of gantry support 1.
Operating principle of the present invention is divided into two kinds of situations: the first situation, as shown in Figure 5 and Figure 6, after long tunnel scope of operation blasting procedure terminates, by a large amount of explosion toxic and harmful of gathering and flue dust near the scope of operation, now, in shotfiring safety region, first by motor long-distance control cabinet 11 and the local switch board 8 of motor, movable air door 2 on rapid Descent apparatus, as far as possible toxic and harmful and flue dust are intercepted in the space between device and the scope of operation, again by motor long-distance control cabinet 11 and motor the machine switch board 9, jet blower 3 on starting drive, toxic and harmful and flue dust are flowed to rapidly near device, finally by the powerful propeller fan 4 on motor long-distance control cabinet 11 and local switch board 10 starting drive of motor, through large diameter flexible air duct 16 rapidly by the toxic and harmful near device and flue dust pump drainage to outside hole, thus reach quick ventilation smoke exhaust object, the second situation, as shown in Figure 7 and Figure 8, after quick ventilation smoke exhaust work completes, the movable air door 2 on device is risen, make construction equipment, personnel pass through below device, be engaged in the construction of other operation, other operation construction period, jet blower 3 and powerful propeller fan 4 keep duty, there is provided high speed fresh distinguished and admirable to the scope of operation on the one hand, reduce ground temperature, improve operating environment, on the other hand the dirty wind produced in work progress is drained into outside hole.
Wherein, the powerful propeller fan 4 of reasonable selection as on device to hole separate ventilation fume extractor, be fixed on the upper end of gantry support 1 by bolt, direction of discharging fume when propeller fan 4 is installed is towards outside hole.Be close to propeller fan 4 air intake and be welded with the protective screening 17 that one employing steel mesh reinforcement make, form double protection with the protective screening of propeller fan 4 self, during to avoid explosion, indivedual little slungshot pounds damage air intake; Air outlet is firmly connected with supporting flexible air duct 16, and flexible air duct 16 is hung straight along top, hole and extended to outside hole always, discharges fume to hole separate ventilation.Air duct adopts rigidity air duct when the corner that corner is larger, and in this preferred embodiment, employing angle steel and Plate Welding make.
To the protective screening 17 that the air outlet welding of jet blower 3 adopts steel mesh reinforcement to make together, form double protection with jet blower self-protection net.During work, to inject high speed to the scope of operation fresh distinguished and admirable for jet blower 3, the fresh distinguished and admirable one side of high speed serves dilution scope of operation blasting fume or dirty wind, reduce scope of operation temperature action, accelerate on the other hand blasting fume or dirty distinguished and admirable to powerful propeller fan 4, be conducive to propeller fan 4 fast by its pump drainage to outside hole.
When carrying out the selection of movable air door 2, be vertical wall for tunnel section abutment wall, as gateway opening shape, rectangle and square, adopt electric steel-coil gate as movable air door 2, and according to meeting the current height of equipment and width dimensions below device, select or customization electric steel-coil gate model; Be the section of other form for tunnel section, adopt multilayer canvas air curtain as movable air door 2.Movable air door 2 is closed during only needing quick ventilation smoke exhaust after explosion, namely falls, and other operation construction period opens, and namely rises, and to meet construction equipment, personnel pass through needs.
The present invention's moving method in actual applications, as shown in Figure 9 and Figure 10, before device moves, first takes apart the air outlet of big diameter blouing tube 16 from propeller fan 4, is hung on tunnel top, is disconnected by the external circuit of local for motor switch board 8,9,10, by the stentplacement be made up of shaped steel in 15 ~ 20t Wagons of lorries, truck is started to ventilation and exhaust device, by manipulation hydraulic control system 7, shrink the hydraulic cylinder 6 on ventilation and exhaust device, ventilation and exhaust device is made to drop on type support, and the support post distance from bottom ground of assurance device is not less than 25cm, after suitably reinforcing is done to ventilation and exhaust device, slowly at the uniform velocity start truck, ventilation and exhaust device is made to move to reposition to scope of operation direction, again by manipulation hydraulic control system 7, jacking hydraulic cylinder 6, make ventilation and exhaust device lifting in place, output truck, extend and firmly connect large diameter flexible air duct 16 and the local switch board 8 of motor, 9, the external circuit of 10, ventilation smoke exhaust work can be proceeded in a new location.
Claims (10)
1. one kind long distance tunnel construction phase quick ventilation and exhaust device, it is characterized in that, comprise gantry support (1), be separately positioned on the fixed throttle (5) of gantry support (1) upper end and the movable air door (2) of its side, propeller fan (4) and the jet blower (3) of the upper end of gantry support (1) is arranged on through fixed throttle (5), and the electric machine control system of movable air door (2), propeller fan (4) and jet blower (3); Fixed throttle (5) matches distinguished and admirable for the axis cut off in tunnel with the movable air door (2) after expansion; The air intake vent of propeller fan (4) and the air outlet of jet blower (3) are arranged on the side of fixed throttle (5) near the scope of operation, the air outlet of propeller fan (4) connects flexible air duct (16), and the air outlet of flexible air duct (16) extends to tunnel outside.
2. one according to claim 1 long distance tunnel construction phase quick ventilation and exhaust device, it is characterized in that, gantry support (1) comprises support platform and support post, support platform is frame construction, lower end is at least symmetrical arranged four support posts, and upper end is coated with the gripper shoe (15) be fixedly installed; Between the support post that the same sidewall of adjacent tunnel is arranged and the frame construction inside of support platform forms triangular support configurations by bracing piece (13); The support post bottom that the same sidewall of adjacent tunnel is arranged is fixed on the connecting plate (14) that be arranged in parallel with canal axes jointly.
3. one according to claim 2 long distance tunnel construction phase quick ventilation and exhaust device, it is characterized in that, supporting strut is arranged respectively the hydraulic cylinder being used for highly regulating, the cylinder body of support post and connecting plate (14) difference connecting fluid cylinder pressure (6) and piston rod; The hydraulic control system (7) of hydraulic cylinder is arranged on gantry support (1), for controlling interlock operation or the separate operaton of each hydraulic cylinder (6).
4. one according to claim 1 long distance tunnel construction phase quick ventilation and exhaust device, it is characterized in that, electric machine control system comprises the local switch board (8,9,10) of the motor be arranged on gantry support (1), and is arranged on the motor long-distance control cabinet (11) of home beyond blast area; The local switch board (8,9,10) of motor and motor long-distance control cabinet (11) are by wireless or wired connection communication.
5. one according to claim 1 long distance tunnel construction phase quick ventilation and exhaust device, it is characterized in that, movable air door (2) is arranged on the side of propeller fan (4) air outlet, adopts layer flexible air curtain or is provided with the rolling-gate of chute.
6. one according to claim 1 long distance tunnel construction phase quick ventilation and exhaust device, it is characterized in that, propeller fan (4) is arranged on gantry support (1) upper center, and jet blower (3) is symmetricly set on the both sides of propeller fan (4); The air intake vent of propeller fan (4) and the air outlet of jet blower (3) are respectively arranged with protective screening (17).
7. one according to claim 1 long distance tunnel construction phase quick ventilation and exhaust device, is characterized in that, flexible air duct (16) is arranged along the hanging of tunnel top, and it arranges the transition of rigidity air duct and connects when corner is greater than 15 degree turning round.
8. a long distance tunnel construction phase quick ventilation smoke exhaust method, is characterized in that, arrange and cut off axially distinguished and admirable air door, form closed pollution space between work plane and air door in tunnel, form safe space at air door to tunnel portal; Then the ventilation equipment through air door are utilized to be pumped to outside hole with air-flow by the air exhaust passage closed by the pollutant polluted in space, utilize simultaneously through air door blast apparatus by safe space to pollution space in air blast, make pollutant add the entrance of flow speed and direction ventilation equipment.
9. one according to claim 8 long distance tunnel construction phase quick ventilation smoke exhaust method, it is characterized in that, described air door comprises superposed standing part and lower removable part, in the construction period of non-blasting procedure, movable air door can be opened, be maintained across the ventilation equipment of standing part and the normal operation of blast apparatus, for working face cooling also carries out blowdown operation in real time.
10. one according to claim 8 long distance tunnel construction phase quick ventilation smoke exhaust method, it is characterized in that, the position that described air door is arranged is more than or equal to 50 meters from the distance of work plane, and is less than the ventilation critical distance of ventilation equipment and the air blast critical distance of blast apparatus.
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| CN201410810707.9A CN104500123B (en) | 2014-12-22 | 2014-12-22 | A kind of distance tunnel construction phase quick ventilation and exhaust device and method |
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| CN201410810707.9A CN104500123B (en) | 2014-12-22 | 2014-12-22 | A kind of distance tunnel construction phase quick ventilation and exhaust device and method |
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| CN104500123A true CN104500123A (en) | 2015-04-08 |
| CN104500123B CN104500123B (en) | 2016-08-17 |
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| CN105240298A (en) * | 2015-11-17 | 2016-01-13 | 中国长江三峡集团公司 | Ventilation smoke-dissipation system for underground cavern during construction period and mounting method of ventilation smoke-dissipation system |
| CN109282634A (en) * | 2018-10-18 | 2019-01-29 | 楚天科技股份有限公司 | A kind of air door hoist cable isolating device of tunnel oven |
| CN109869162A (en) * | 2019-04-09 | 2019-06-11 | 中国水利水电第四工程局有限公司 | A kind of moving platform device for accelerating the cooling of tunnel high temperature section |
| CN110454209A (en) * | 2019-08-09 | 2019-11-15 | 苏州中车建设工程有限公司 | interval tunnel jet fan installation and maintenance platform and installation and maintenance method |
| CN111197854A (en) * | 2020-02-28 | 2020-05-26 | 长安大学 | Intelligent air door and installation method and working method thereof |
| CN112065491A (en) * | 2020-09-21 | 2020-12-11 | 中铁十八局集团有限公司 | Tunnel construction ventilation method |
| CN112127932A (en) * | 2020-08-24 | 2020-12-25 | 东南大学 | Lateral smoke exhaust auxiliary flow guide control device and method |
| CN112197390A (en) * | 2020-11-13 | 2021-01-08 | 黄河勘测规划设计研究院有限公司 | High-density hidden-hole pedestrian passageway fire protection system |
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| CN112459783A (en) * | 2020-12-23 | 2021-03-09 | 莱芜莱新铁矿有限责任公司 | Safety device for mining under filling body |
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