EP3339569A1 - Dispositif et procédé d'aération d'un ouvrage pour tunnel - Google Patents

Dispositif et procédé d'aération d'un ouvrage pour tunnel Download PDF

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Publication number
EP3339569A1
EP3339569A1 EP17207822.2A EP17207822A EP3339569A1 EP 3339569 A1 EP3339569 A1 EP 3339569A1 EP 17207822 A EP17207822 A EP 17207822A EP 3339569 A1 EP3339569 A1 EP 3339569A1
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EP
European Patent Office
Prior art keywords
fan
ventilation
line
parameters
value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17207822.2A
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German (de)
English (en)
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EP3339569B1 (fr
Inventor
Matthias Papesch
Jens Kegenhoff
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Korfmann Lufttechnik GmbH
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Korfmann Lufttechnik GmbH
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Publication of EP3339569A1 publication Critical patent/EP3339569A1/fr
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21F1/003—Ventilation of traffic tunnels
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21F1/006—Ventilation at the working face of galleries or tunnels
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21F1/04—Air ducts

Definitions

  • the invention relates to a method and a device for ventilating a tunnel structure.
  • ventilation systems are usually provided which comprise at least one fan and at least one ventilation line connected thereto. Fresh air delivered by the fan is introduced through the ventilation duct into the tunnel structure.
  • the fan is operated according to a fixed control, so that a substantially constant air flow is supplied by the ventilation line.
  • Other concepts include various controls for operating a fan.
  • measured values of the required air flow are recorded.
  • this describes DE 28 03 830 a method for measuring and monitoring the pressure conditions and the air flow rates in Lutten Oberen. Static pressures are determined in openings in the jacket of the Lutten Oberen. From differential pressure values, the basic course of the air flow rates over the length of the Lutten Arthur can be determined.
  • the WO 00/36275 discloses ventilation for tunneling sites where detectors measure air quality within the tunnel. Measurement signals are transmitted to a processor and compared there with reference values of the required air quality. Active ventilation components, such as controllable fans, are controlled according to the difference between the reference value and the value determined in order to maintain the air quality at the required level.
  • the US 6,724,917 B1 describes a fan control apparatus for ventilating a tunnel.
  • the ventilation device comprises sensors for carbon monoxide and wind speed and an image sensor with which a visual index is determined.
  • a control loop is provided to calculate a default for the operation of the fan based on the visual index.
  • the DE 1110 894 discloses a method and a device for measuring weather currents flowing in a special ventilation in mine tailings.
  • a Luttenstrang is provided, in the front end portion of a fan and in the opposite end portion of a measuring device is provided for measuring the sucked weather.
  • Another measuring device is provided on the fan.
  • the measuring devices each have constrictions, wherein by pressure measurements, the performance, ie the actual sucked amount of weather can be determined.
  • the device according to the invention and the method according to the invention comprise a Ventilation system with at least one fan and a ventilation duct connected to it.
  • the fan can be arranged, for example, outside the tunnel structure.
  • the use of different types of fans is possible.
  • the drive of the fan is preferably electrical. From the design axial fans are preferred.
  • the ventilation duct may comprise a wide variety of materials and constructions, for example pipelines of different cross sections.
  • the ventilation duct can have several sections with different properties.
  • the ventilation line has at least one flexible section or is designed to be flexible overall, that is, for example, deformable or variable in length.
  • At least a portion of the ventilation line comprises a flexible Lutten Arthur.
  • At least one measuring device for detecting one or more values of the air flow supplied through the ventilation line is connected to the ventilation line.
  • various types of known measuring devices in question with which, for example, values such as pressure, flow rate or air velocity can be determined.
  • the volume flow is detected directly or can be derived from the values.
  • Measured values are preferably supplied as electrical signals.
  • the ventilation duct may have a plurality of outlets, in preferred embodiments at least one outlet, preferably the single outlet, is arranged at the end of the ventilation duct.
  • the measuring device is preferably arranged at or near an outlet so as to measure the air flow delivered through the outlet.
  • the operation of the fan is regulated as a function of at least one measured value determined by means of the measuring device.
  • the fan is variably controllable, especially in electrically powered fans by appropriate specification of the electrical supply.
  • the control is performed by specifying the frequency of the electric power supplied to the fan, eg. by controlling a frequency converter.
  • the fan is thus operated in a regulated manner in accordance with the measured value determined on the ventilation line.
  • a closed loop is formed.
  • the control of the fan is carried out so that the controlled variable is set to a desired value, which may be, for example, constant.
  • a setpoint value is a constant volume flow at an outlet of the ventilation line.
  • an expected operating value of the fan is calculated before and / or during operation.
  • at least parameters of the fan, parameters of the ventilation line and, optionally, other parameters flow in, for example environmental parameters.
  • the calculation means can be designed differently, in particular as an electrical circuit.
  • the calculation is done in a suitably programmed computer, i. by executing a calculation or simulation program or corresponding software module as explained below.
  • Parameters of the fan can, for example, be pre-stored in a computer used for the calculation or be retrievable by the calculation means via a data connection. These parameters may include, for example, data on various operating points of the fan, e.g. As functions, curves, tables or in any other form, for example. Data on the dependence of values of an air flow promoted by the fan of the control, for example, of the frequency.
  • the parameters of the fan can also include, for example, data on the dependence of a supplied volume flow from the pressure for different operating points, for example for different frequencies.
  • At least one or more of the parameters used in the calculation can also be pre-stored or retrievable via data connection.
  • Possible parameters for the calculation include, for example, dimensions of the ventilation line, or of different sections thereof, ie z. B. Length and diameter. Other parameters can be z. B. friction coefficients or leakage values.
  • At least some of the parameters of the ventilation line used in the calculation are each provided with a location which assigns properties (eg line cross sections or the like) to specific locations in the ventilation line.
  • some of the parameters used be entered and stored via a user interface, in particular data on the length and course of the ventilation line.
  • Some of the parameters used in the calculation can also be determined, for example, by measuring devices or sensors.
  • the calculation determines at least one expected operating value of the fan. These may be different values characterizing the operating point of the fan, for example the speed.
  • the operating value can also be a value of the control of the fan, for example the frequency with which an electrically operated fan is controlled.
  • the calculated expected operating value is the power consumed by the fan.
  • One or more setpoint values on which control of the operation of the fan is based are also preferably taken into account in the calculation, in particular a default value for a volume flow to be achieved at an outlet.
  • a real, resulting from the above control operating value of the fan is determined during operation and compared with the expected operating value.
  • the adjusting itself in the real-time control operating point with the expected operating point based on parameters of the fan and the ventilation duct. If these - within the limits to be determined in each case - match, then an expected operation can be determined and possibly signaled.
  • the deviation is signaled according to the invention, for example in the form of an optical or acoustic display or in the form of an electrical signal, which can be used, for example, for controlling or transmitting information.
  • a deviation will indicate a fault condition of the ventilation system. While this u. U. can also be a fault on the fan, a control device or the connected measuring device, it will be mainly to errors or defects of the ventilation line, d. H. For example, not included in the calculation leakage, changed or incorrect installation, kinks, bottlenecks or additional, not included in the calculation consumers such as filters, mufflers or grille.
  • the inventive method and the inventive device on the one hand by the scheme to ensure the orderly, trouble-free operation with provision of the required ventilation in the event of defects occurring or improper use of the ventilation duct. At the same time, however, a constant check of the operation is made possible by the signaling.
  • defects or changes to the ventilation duct can not only be determined, but it can also be preferred when signaling the degree of deviation, which effects the deviation has on the energy-efficient operation of the entire system.
  • signaling On the basis of the signaling, a decision can be made as to whether defects or changes made in the laying of the ventilation duct should be repaired or corrected if necessary.
  • a particularly energy-efficient operation can be meaningfully supported.
  • the method and apparatus of the present invention can be used to ventilate any form of underground structures, generally referred to herein as tunneling structures.
  • tunneling structures are suitable for non-continuous tunnel structures, i. Tunnel with a closed end, eg during tunnel construction.
  • the method and the device can be designed to be particularly flexible, so that at any time the consideration of changes, for example.
  • the ventilation system possible is.
  • Changes in the ventilation line can be made, ie z.
  • an extension of the line or an addition of new line sections or consumers According to the development, a recalculation of the expected operating value then takes place based on parameters of the changed ventilation line. These can be, for example, entered via a user interface and possibly saved.
  • the operation of the ventilation system with the modified ventilation line can then be carried out and monitored.
  • the calculation is preferably carried out such that one or more air flow parameters are assumed at an outlet of the ventilation line.
  • the airflow parameters may in particular include the volume flow, the static pressure and / or the dynamic pressure.
  • one or more air flow parameters at the inlet of the ventilation line are preferred, taking into account properties of the ventilation line. H. determined at the connection of the fan.
  • the expected adjusting operating point of the fan can be determined.
  • the calculation can be carried out by an iterative calculation method in which local airflow parameters are determined on the basis of one or more airflow parameters at an outlet of the ventilation line for a plurality of points along the ventilation line and finally for the inlet of the ventilation line.
  • parameters such as leakage values and coefficients of friction of the ventilation line as well as dimensions, ie, for example, length and / or diameter of the ventilation line can be included in the calculation.
  • information about the course of the ventilation line can be included in the calculation, for example about consumers, constrictions, changes of direction and / or side outlets of the ventilation duct. This information preferably contains information about the respective position within the ventilation line.
  • such parameters can each be used for each of the steps or sections to be calculated iteratively one after the other. This means that very different line characteristics can be calculated easily and automatically with sufficient accuracy.
  • FIG. 1 schematically a ventilation system 10 for the construction site of a tunnel 12 is shown. Outside the tunnel 12 is a fan 14, the fresh air 16 sucks and introduces through a ventilation duct 20 in the tunnel 12. The conveyed air is discharged to an outlet 18 at the end of the ventilation duct 20 into the interior of the tunnel 12.
  • the ventilation line 20 is a Lutten Arthur, constructed of individual interconnected flexible Luttenmaschinen.
  • the Lutten elite have a wall of plastic-coated fabric, which is reinforced with a reinforcing spiral. Successive Luttenimplantation are connected with couplings to each other and connected to a Luttenstrang.
  • the Luttentechnisch can be folded or pulled apart, so that the Lutten implant are variable in their length.
  • the conduit 20 during the constant propulsion during the construction of the tunnel 12 can be adapted in each case in length, so that fresh air always into the area of the tunnel end can be delivered.
  • measured values are detected by a measuring device 24.
  • the measured values thus acquired are supplied as an electrical signal via a signal line 26 to a control device 22.
  • control device 22 comprises a programmable logic controller (PLC), which processes the measurement signal, and a frequency converter (not shown), with which a frequency for the electrical supply and the operation of the fan 14 can be preset.
  • PLC programmable logic controller
  • the detected measured value is the volume flow at the outlet 18.
  • a control program takes place, with which the volume flow reported by the measuring device 24 is regulated to a constant preset value.
  • the measurement signal received via the line 26 is evaluated and, in accordance with a control algorithm, a suitable control of the fan 14 is predetermined by the frequency converter, wherein the manipulated variable is the frequency.
  • FIG. 4 shows an example of a characteristic field for the fan 14.
  • f 1 , f 2 , f 3 dependencies of the achievable pressure p of delivered volume flow V.
  • F 2 a fixed frequency
  • a PI control algorithm is used to cause the fan 14 to each be driven at a frequency f such that the volumetric flow V detected at the outlet 18 by the measuring device 24 is regulated to a constant setpoint.
  • the respective control of the fan 14 upon reaching the predetermined desired Volume flow at the outlet 18 kept constant when the predetermined setpoint for the flow rate was achieved with a deviation below a tolerance threshold of, for example, 10% over a stability period of, for example, 60 seconds.
  • a readjustment is triggered when either a new default value for the desired volume flow is entered or the measured value for the real volume flow at the outlet 18 deviates by more than the predefined tolerance threshold for longer than the predefined stability period.
  • FIG. 1 As an ideal straight laid ventilation duct is shown, it can come in real ventilation systems, especially under construction site conditions, to changes or defects in the vent line 20.
  • a first possible change would be, for example, the extension of the vent line 20, either by a new Lutastegment is set or by an existing Lutastegment flexibly changed in length.
  • FIG. 2 For example, further changes or possible defects are shown.
  • a bottleneck 28a may be formed in a flexible portion of the venting conduit 20.
  • portions of the vent line 20 may deviate from the ideal straight line and, for example, form bows 28b.
  • a variety of defects, such as in particular leaks 28c at locations along the ventilation duct 20 are possible.
  • the required readjustment ie frequency increase at the fan, leads to an increased power consumption. This is monitored by the monitoring device 30.
  • FIG. 5 shows the logical structure of the monitoring device 30. This comprises - shown schematically - a calculation unit 32, associated therewith memory 34a, 34b, a comparison unit 36 and a display unit 38.
  • the subdivision between the respective units is logical / organizational to understand.
  • a computer of conventional design ie in particular with a central unit for executing a program, volatile and non-volatile memory, as well as with input / output interfaces.
  • the functionality described below is provided by suitable software.
  • a characteristic data for the operation of the connected fan 14 are stored, in particular the relevant characteristic field, as symbolically in FIG. 4 is shown.
  • the relevant curves are represented by table values, where intermediate values are calculated by interpolation.
  • Information about the ventilation line 20 is stored in memory 34b. This includes the length L of the line 20 as well as line parameters such as mean leakage losses (leakage value f for the undamaged line), line diameter D, coefficient of friction ⁇ , etc .. If these values are constant for all sections of the line 20, each time storing the values is sufficient , If the line 20 comprises different sections, for example with different material or different dimensions, then memory 34b additionally stores in each case in which of the sections which values apply.
  • the information stored in memory 34b via the venting line 20 include any consumers within the line, eg. Filter, grid, but also bends, bottlenecks, etc. Changes and even minor defects of FIG. 2 In some cases, it may well be known in principle and at least temporarily be accepted. For example. can be useful in construction site operation a short-term installation of the Lutten Arthur 20 in a bow 28b to avoid an obstacle, or a constriction 28a can be at least temporarily accepted, as long as no repaired material is available.
  • All of this information about the routing of the vent line 20 is input via a user interface 40 and stored in the memory 34b. In any case, the change of the installation, the stored information is updated.
  • the computing unit 32 predicts the expected operation of the fan and determines an expected operating value E.
  • the expected operating value E is the predicted electrical power consumption of the fan. Details on how to perform the calculation are explained below.
  • a real operating value of the fan 14 will be determined, which is the same size as the expected operating value, namely in the preferred example, the electrical power consumption W. This can either be measured or by the PLC 22 or the monitoring device 30 on the basis of known characteristics of the fan 14 from the operating data, eg. The speed, operating frequency f or additional data of the operating point A, are determined by calculation.
  • the real operating value of the electrical power consumption W is compared in the comparison unit 36 with the expected operating value of the electrical power consumption E.
  • the result of the comparison is output by the display device 38.
  • the display device 38 shows the degree of deviation between the real power consumption W and the expected power consumption E, for example, in percent, as an efficiency.
  • the efficiency can be signaled at intervals in different ways, for example green at high efficiency (for example 100% -95%), yellow at medium efficiency (for example below 95% -85%) and red at low efficiency (for example below 85%).
  • the required operating point of the fan 14 is first determined by an iterative calculation method using the stored parameters of the ventilation duct 20. In this case, starting from the outlet 18 is recalculated stepwise to the input of the ventilation line 20, wherein for each point of the calculation, on the one hand, local parameters of the ventilation line 20 and, on the other hand, environmental parameters are taken into account. This calculates airflow parameters for each point. Based on the thus determined air flow parameters at the inlet of the ventilation duct, i. At the connection of the fan 14, the operating point A is determined from the stored parameters of the fan 14, so that the expected control, namely the frequency f to be set at the frequency converter and the resulting expected electrical power consumption E can be derived.
  • the coefficient of friction ⁇ , a leakage value f *, the diameter D of the duct are used as local parameters of the duct, and the density ⁇ of the air is used as the ambient parameter in the calculation.
  • the leakage value f is a measure of the tightness of the respective line section, eg. Lutten Arthur.
  • the value can, for example, be calculated or determined experimentally for the line used in each case.
  • the friction coefficient ⁇ is dependent on the nature of the line, in particular its surface, the leakage and the flow conditions. This value can also be determined, for example, experimentally for the line used in each case.
  • the coefficient of friction ⁇ is tabulated for many types of line as a function of the Reynolds number Re, with which the flow conditions in the line can be characterized.
  • the starting point of the calculation is the desired value of the air volume flow V at the outlet 18 of the ventilation line 20.
  • the value U (x previous step ) indicates the flow rate of the previous step
  • p static (x previous step ) denotes the pressure increase compared to the previous step due to the conditions in the line.
  • any stored consumers within the currently calculated line section are additionally considered by the term p (x actual ) as an additional pressure increase compared to the last calculated step.
  • Such consumers can, for example, cross-sectional changes within the line, changes in direction or arranged in the air flow obstacles such as mufflers, protective grille o. ⁇ . be.
  • zeta values For each type of consumer to be included in the calculation, on the one hand information stored within the line and on the other hand parameters for the influence of the consumer on the air flow in the memory 34b, so-called zeta values, from which the respective term p additionally calculates (x actual ) using the air flow parameters determined for the respective location can be.
  • the zeta values are tabulated for different types of consumption or can be determined experimentally.
  • each 1 meter can be used.
  • aeration line 20 are calculated starting from the target value of the volume flow at the outlet 18 step by step for every meter to the input of the air flow parameters U, p statically .
  • the parameters diameter D, leakage value f and friction coefficient ⁇ of the line do not change, constant values can be used here.
  • the local value should be used for each step.
  • point L1 is a bend of the line 20, with an obstacle is bypassed.
  • the parameters of this bend at the point L1 for example the bend radius, can also be input via the user interface 40 and thus the bend as consumer by p additionally (L1) can be taken into account in the calculation.
  • the described iterative simulation method can run differently, for example, with respect to the example mentioned step size of 1 meter with different step size or considering less, different or more parameters.
  • the use of completely different simulation methods for determining the expected operating value is also possible.
  • an external data interface for the monitoring device 30, for example as a digital network connection, preferably as an Internet connection.
  • a digital network connection preferably as an Internet connection.
  • data on the operating state at any time be remotely available, in particular the current efficiency.
  • Remote monitoring or control is possible via the external data interface.
  • data may also be actively transmitted from the monitoring device 30 to remote devices, for example, an alarm when a monitored parameter, e.g. the efficiency falls below a predetermined threshold.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Ventilation (AREA)
EP17207822.2A 2016-12-22 2017-12-15 Dispositif et procédé d'aération d'un ouvrage pour tunnel Active EP3339569B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016125405.3A DE102016125405A1 (de) 2016-12-22 2016-12-22 Verfahren und Vorrichtung zur Belüftung eines Tunnelbauwerks

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EP3339569A1 true EP3339569A1 (fr) 2018-06-27
EP3339569B1 EP3339569B1 (fr) 2019-08-14

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109458206A (zh) * 2018-12-26 2019-03-12 贵州大学 一种延伸至矿井下的送风管组件
CN109973133A (zh) * 2019-04-18 2019-07-05 湖南有色冶金劳动保护研究院 一种通风数据测定装置及其数据测定、仪表标定方法
CN110617098A (zh) * 2019-11-01 2019-12-27 中交一公局桥隧工程有限公司 一种隧道施工用斜井通风工艺
CN111396111A (zh) * 2020-03-19 2020-07-10 华南理工大学 一种高速公路隧道安全节能通风系统的控制方法
CN112984722A (zh) * 2021-02-02 2021-06-18 广东积微科技有限公司 风管机静压的识别方法、装置、计算机设备和存储介质

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CN109958469B (zh) * 2019-05-15 2020-09-08 云南交投公路建设第三工程有限公司 一种特长隧道多区域控制混合式通风施工方法

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EP0240713A1 (fr) * 1986-04-07 1987-10-14 Mitsubishi Denki Kabushiki Kaisha Dispositif de contrôle pour système de ventilation de tunnels
JPH01235799A (ja) * 1988-03-14 1989-09-20 Toshiba Corp 道路トンネルの換気制御装置
WO2000036275A1 (fr) * 1998-12-11 2000-06-22 Svein Inge Haaland Ventilation de tunnels et procede de commande pour cette ventilation
US6724917B1 (en) * 1999-09-13 2004-04-20 Kabushiki Kaisha Toshiba Control apparatus for ventilating a tunnel
EP1524404A2 (fr) * 2003-10-09 2005-04-20 Industrie Elektronik Brandenburg Gmbh Procédé et dispositif pour la surveillance de bâtiments
WO2011042980A1 (fr) * 2009-10-05 2011-04-14 株式会社創発システム研究所 Système de commande de ventilation d'un tunnel bidirectionnel utilisant régulation d'un ventilateur de jet

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110894B (de) * 1959-06-15 1961-07-13 Korfmann Gmbh Maschf Verfahren und Einrichtung zur Messung der innerhalb der Sonderbewetterung fliessenden Wetterstroeme in Luttenleitungen der Bergwerke
DE2803830A1 (de) * 1978-01-30 1979-08-02 Korfmann Gmbh Maschf Verfahren zur messung und ueberwachung der druckverhaeltnisse sowie der luftdurchsatzmengen in luttenleitungen sowie vorrichtung zur durchfuehrung dieses verfahrens
EP0240713A1 (fr) * 1986-04-07 1987-10-14 Mitsubishi Denki Kabushiki Kaisha Dispositif de contrôle pour système de ventilation de tunnels
JPH01235799A (ja) * 1988-03-14 1989-09-20 Toshiba Corp 道路トンネルの換気制御装置
WO2000036275A1 (fr) * 1998-12-11 2000-06-22 Svein Inge Haaland Ventilation de tunnels et procede de commande pour cette ventilation
US6724917B1 (en) * 1999-09-13 2004-04-20 Kabushiki Kaisha Toshiba Control apparatus for ventilating a tunnel
EP1524404A2 (fr) * 2003-10-09 2005-04-20 Industrie Elektronik Brandenburg Gmbh Procédé et dispositif pour la surveillance de bâtiments
WO2011042980A1 (fr) * 2009-10-05 2011-04-14 株式会社創発システム研究所 Système de commande de ventilation d'un tunnel bidirectionnel utilisant régulation d'un ventilateur de jet

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109458206A (zh) * 2018-12-26 2019-03-12 贵州大学 一种延伸至矿井下的送风管组件
CN109973133A (zh) * 2019-04-18 2019-07-05 湖南有色冶金劳动保护研究院 一种通风数据测定装置及其数据测定、仪表标定方法
CN109973133B (zh) * 2019-04-18 2023-11-14 湖南有色冶金劳动保护研究院有限责任公司 一种通风数据测定装置及其数据测定、仪表标定方法
CN110617098A (zh) * 2019-11-01 2019-12-27 中交一公局桥隧工程有限公司 一种隧道施工用斜井通风工艺
CN111396111A (zh) * 2020-03-19 2020-07-10 华南理工大学 一种高速公路隧道安全节能通风系统的控制方法
CN111396111B (zh) * 2020-03-19 2021-01-29 华南理工大学 一种高速公路隧道安全节能通风系统的控制方法
CN112984722A (zh) * 2021-02-02 2021-06-18 广东积微科技有限公司 风管机静压的识别方法、装置、计算机设备和存储介质

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