CN112376633A - Gas explosion simulation experiment device and method for gas cabin of urban comprehensive pipe gallery - Google Patents
Gas explosion simulation experiment device and method for gas cabin of urban comprehensive pipe gallery Download PDFInfo
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- CN112376633A CN112376633A CN202011326326.5A CN202011326326A CN112376633A CN 112376633 A CN112376633 A CN 112376633A CN 202011326326 A CN202011326326 A CN 202011326326A CN 112376633 A CN112376633 A CN 112376633A
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- 238000004088 simulation Methods 0.000 title claims abstract description 34
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
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- 108010066114 cabin-2 Proteins 0.000 description 3
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract
The invention provides a gas explosion simulation experiment device and method for a gas cabin of an urban comprehensive pipe gallery. The device comprises a gas cabin, a bulkhead cabin and two sandwich structure sub-cabins, wherein the gas cabin, the bulkhead cabin and the two sandwich structure sub-cabins are arranged in a reinforced concrete shell; the gas cabin is adjacent to the bulkhead cabin, the inner wall of the gas cabin is provided with a plurality of shock wave measuring line lifting hooks and a plurality of acceleration sensors, and the shock wave measuring line lifting hooks are used for fixing the shock wave pressure sensors; the two-sandwich-structure subdivision is arranged above the gas cabin and forms a two-sandwich structure with the gas cabin, and a steel top cover is arranged at the top of the two-sandwich-structure subdivision; and an inflation hole is arranged between the two sandwich structure sub-chambers and the gas chamber and is used for conveying natural gas into the gas chamber. According to the invention, through accurate simulation of gas explosion of the urban pipe gallery, research on gas explosion of the gas cabin of the pipe gallery with the two-interlayer structure under different explosion conditions is realized, so that the simulation experiment has the characteristics of accuracy, reliability, accuracy, safety, strong operability, strong controllability, high similarity with actual conditions and the like.
Description
Technical Field
The invention relates to the technical field of comprehensive pipe gallery gas explosion simulation experiments, in particular to a city comprehensive pipe gallery gas cabin gas explosion simulation experiment device and method.
Background
With the rapid development of urban construction, underground comprehensive pipe galleries are gradually valued in the construction of new urban areas and new cities. Utility tunnel goes into a plurality of pipelines such as gas pipeline, electric power pipeline and heating power pipeline to shelter and lays, leads to there being great conflagration, explosion hidden danger in the piping lane. Once a fire and an explosion accident occurs, dangerous accidents such as casualties, traffic jam, electric power information interruption and the like can be directly caused, inconvenience is brought to production and life of people, and adverse effects can be caused to the development of society and economic order.
Utility tunnel is as one of the main component parts of underground structure, and the utility tunnel safety class of regulation is the one-level among the city utility tunnel engineering specification, and to the gas combustion cabin gas explosion to the research of the destruction degree and the propagation law of utility tunnel structure and peripheral structures not systematized, corresponding utility tunnel structure antiknock standard is not put out of office. Because actual utility tunnel section structure size is bigger, if carry out actual utility tunnel gas explosion test, its cost and danger degree are bigger, do not have the feasibility of implementation. The background more than combining, develop simulation utility tunnel antiknock test, research utility tunnel destruction and reaction characteristic under the blast load effect, the influence of the interior explosion of analysis piping lane gas cabin to utility tunnel overall structure and affiliated supporting facility has very important meaning, carries out optimal design to the antiknock structure of utility tunnel and the key position of affiliated structure in view of the above.
The utility tunnel model that current utility tunnel gas explosion simulation experiment technique adopted is standard section structure, has following shortcoming: the utility tunnel should include an auxiliary structure rather than a single standard cross-section structure, and it is not economical to experiment with a real utility tunnel; the comprehensive pipe gallery structure is generally built along with a road, the number of surrounding structures of the road is large, and the influence of gas explosion in a gas cabin on the surrounding structures is not taken into consideration; the propagation rule and attenuation characteristic of the gas explosion in the comprehensive pipe rack along the length direction of the pipe rack are not researched, and actual measurement arrangement is not realized; because utility tunnel is underground space structure, the stability of peripheral ground influences the stability of pipe rack structure, does not consider the impact of the bombardment wave that gas explosion arouses in the gas tank to the ground around the piping lane.
Disclosure of Invention
The embodiment of the invention mainly aims to provide a gas explosion simulation experiment device and method for a gas cabin of an urban comprehensive pipe gallery, which can realize accurate simulation of gas explosion of the urban pipe gallery and achieve the effects of accurate and reliable simulation experiment research, accuracy, safety, strong operability, strong controllability and high similarity with actual conditions.
In order to achieve the purpose, the embodiment of the invention provides a gas explosion simulation experiment device for a gas cabin of an urban comprehensive pipe gallery, which comprises the gas cabin, a partition cabin and two sandwich structure sub-cabins, wherein the gas cabin, the partition cabin and the two sandwich structure sub-cabins are arranged in a reinforced concrete shell;
the gas cabin is adjacent to the bulkhead cabin, a plurality of shock wave measuring line lifting hooks and a plurality of acceleration sensors are arranged on the inner wall of the gas cabin, and the shock wave measuring line lifting hooks are used for fixing the shock wave pressure sensors;
the two-sandwich-structure sub-chamber is arranged above the gas chamber and forms a two-sandwich structure with the gas chamber, and a steel top cover is arranged at the top of the two-sandwich-structure sub-chamber;
and an inflation hole is arranged between the two sandwich structure sub-compartments and the gas compartment and is used for conveying natural gas into the gas compartment.
Optionally, in an embodiment of the present invention, the apparatus further includes a plurality of cable conversion holes, the cable conversion holes are disposed between the two-sandwich structure sub-chamber and the gas chamber, and threads are disposed inside the cable conversion holes and used for being connected to the shock wave pressure sensor and the data transmission line.
Optionally, in an embodiment of the present invention, the apparatus further includes a steel roof disposed between the two-sandwich structure sub-chamber and the gas chamber.
Optionally, in an embodiment of the present invention, the apparatus further includes a concentration detector hole, and the concentration detector hole is disposed in the gas cabin and is used for being connected to a concentration detector.
Optionally, in an embodiment of the present invention, the apparatus further includes a piezoelectric intelligent aggregate, and the piezoelectric intelligent aggregate is embedded inside the reinforced concrete casing before the reinforced concrete casing is poured with concrete.
Optionally, in an embodiment of the present invention, the shock wave pressure sensor includes a wall pressure type shock wave pressure sensor and a free field shock wave pressure sensor.
Optionally, in an embodiment of the present invention, the apparatus further includes a natural gas inflator, the natural gas inflator is provided with a pressure gauge and a pressure release valve, and the natural gas inflator is connected to the inflation hole.
Optionally, in an embodiment of the present invention, the apparatus further includes a plurality of vibration speed sensors, where the vibration speed sensors are disposed around the reinforced concrete casing and are used to measure rock-soil vibration around the reinforced concrete casing.
Optionally, in an embodiment of the present invention, the device further includes an initiator, and the initiator is connected to the gas cabin through an initiation line.
The embodiment of the invention also provides a gas explosion simulation experiment method for the gas cabin of the urban comprehensive pipe gallery, which comprises the following steps: and natural gas is filled into the gas cabin of the urban comprehensive pipe gallery gas cabin gas explosion simulation experiment device, the natural gas concentration in the gas cabin is detected through a natural gas detector, when the natural gas concentration reaches the preset concentration, the natural gas is detonated, and an acceleration sensor and a shock wave pressure sensor in the device are utilized to acquire experiment data.
According to the invention, through accurate simulation of gas explosion of the urban pipe gallery, the influence of the gas explosion on the auxiliary structure of the pipe gallery can be simulated, and the research on the gas explosion of the pipe gallery gas cabin with the two-interlayer structure under different explosion conditions is realized by utilizing the damage degree of the pipe gallery structure and the influence on the stability of peripheral rock soil, so that the simulation experiment has the characteristics of accuracy, reliability, accuracy, safety, strong operability, strong controllability, high similarity with the actual condition and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a gas explosion simulation experiment device for a gas cabin of an urban comprehensive pipe gallery in an embodiment of the invention;
FIG. 2 is a side view of a gas explosion simulation experiment device for a gas cabin of an urban comprehensive pipe gallery in an embodiment of the invention;
FIG. 3 is a schematic view of acceleration measurement of a gas explosion simulation experiment device of a gas cabin of an urban comprehensive pipe gallery in the embodiment of the invention;
FIG. 4 is a schematic diagram of explosion pressure measurement of a gas explosion simulation experiment device of a gas cabin of an urban comprehensive pipe gallery in the embodiment of the invention;
FIG. 5 is a schematic diagram of piezoelectric intelligent aggregate detection of a gas explosion simulation experiment device of a gas cabin of an urban comprehensive pipe gallery in the embodiment of the invention;
FIG. 6 is a schematic view of peripheral geotechnical vibration measurement of the gas explosion simulation experiment device for the gas cabin of the urban comprehensive pipe gallery in the embodiment of the invention.
Reference numerals:
1-a gas cabin;
2-a bulkhead compartment;
3-two sandwich structure sub-compartments;
4-a steel top cover;
5-inflation holes;
6-cable switching hole;
7-concentration detector wells;
8-a reinforced concrete shell;
9-shock wave line measurement lifting hook;
10-an acceleration sensor;
11-wall pressure type shock wave pressure sensor;
12-a free field shock wave pressure sensor;
13-piezoelectric intelligent aggregate;
14-a vibration speed sensor;
15-covering soil body;
16-natural gas detonation source;
17-steel top cover.
Detailed Description
The embodiment of the invention provides a gas explosion simulation experiment device and method for a gas cabin of an urban comprehensive pipe gallery.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the invention, the size of the pipe gallery is reduced according to a certain proportion according to the actual comprehensive pipe gallery structure, and a gas explosion simulation test of the pipe gallery with the two interlayer structures is developed. Fig. 1 is a schematic structural diagram of a gas explosion simulation experiment device for a gas cabin of an urban comprehensive pipe gallery according to an embodiment of the present invention, and the device shown in the figure includes a gas cabin 1, a partition cabin 2 and two sandwich-structured sub-cabins 3 which are arranged in a reinforced concrete shell 8.
In the experimental device of the gas cabin of the pipe gallery, a cabin adjacent to the gas cabin 1 is a bulkhead cabin 2, and a two-sandwich-structure sub-cabin 3 which forms a two-sandwich structure with the gas cabin 1 is positioned at the upper part of the pipe gallery, wherein the two sandwich layers are hollow structures and are communicated with the gas cabin and the ground through orifices. Further, general gas cabin can not appear as the individual cabin form, for the influence degree of studying gas explosion to adjacent cabin, increases adjacent cabin bulkhead 2, and middle bulkhead structure is unanimous with actual piping lane. The compartment with the partition wall can be a water communication compartment, an electric compartment or any other compartment, and the experimental content of the gas compartment is not influenced.
The gas cabin 1 is adjacent to the bulkhead cabin 2, the inner wall of the gas cabin 1 is provided with a plurality of shock wave measuring line lifting hooks 9 and a plurality of acceleration sensors 10, as shown in fig. 3, the shock wave measuring line lifting hooks 9 are used for fixing shock wave pressure sensors 11 and 12, as shown in fig. 4. The acceleration sensor is positioned on the side wall of the gas cabin, the bottom surface of the two interlayers and the top plate of the gas cabin, and is embedded on the surface of the structure and flush with the surface of the structure. The fixed shock wave pressure sensor is positioned on the lower surface of the top plate of the gas cabin and is suspended in the gas cabin.
A wall pressure type shock wave pressure sensor 11 and a free field shock wave pressure sensor 12 are arranged in the gas cabin 1 through a shock wave measuring line lifting hook 9, air shock wave pressure generated by gas explosion is monitored, and the propagation attenuation rule of the air shock wave pressure is researched. The acceleration sensor 10 is arranged on the side wall of the gas cabin 1 and used for measuring the acceleration of the side wall structure of the pipe gallery after gas explosion. Further, an acceleration sensor 10 is also arranged on the side wall of the two-sandwich structure subdivision 3.
The two-sandwich-structure subdivision 3 is arranged on the gas cabin 1 and forms a two-sandwich structure with the gas cabin 1, and a steel top cover 4 is arranged at the top of the two-sandwich-structure subdivision 3.
Wherein, steel top cap 4 and steel top cap 17 are arranged in simulating personnel's mouth of fleing and air inlet and outlet in the actual piping lane, set up respectively at gas cabin top and two sandwich structure subdivision tops.
An inflation hole 5 is arranged between the two-sandwich structure sub-chamber 3 and the gas chamber 1, and the inflation hole 5 is used for conveying natural gas into the gas chamber 1.
Wherein, the diameter of the inflation hole arranged in the gas cabin 1 is 3-5 cm, and the inflation hole 5 is connected with a portable natural gas inflator pump provided with a pressure gauge and a pressure release valve.
When the simulated explosion experiment of the pipe gallery gas cabin is carried out, natural gas is filled into the gas cabin of the gas explosion simulated experiment device, the natural gas concentration in the gas cabin is detected through the natural gas detector, when the natural gas concentration reaches the preset concentration required by the simulated explosion experiment, the natural gas is detonated, and the acceleration sensor and the shock wave pressure sensor in the device are utilized to collect experiment data, so that the simulated explosion experiment is completed.
As an embodiment of the present invention, the device further includes a plurality of cable conversion holes 6, the cable conversion holes are disposed between the two-sandwich-structure sub-chamber and the gas chamber, and threads are disposed inside the cable conversion holes for connecting the shock wave pressure sensor and the data transmission line.
In this embodiment, cable conversion holes 6 are uniformly arranged along the gas cabin 1, the diameter of the cable conversion holes 6 is 3-5 mm, and threads are arranged inside the cable conversion holes. Specifically, data of the wall pressure type shock wave pressure sensor 11 and data of the free field shock wave pressure sensor 12 are transmitted to an external computer through the cable conversion hole 6 by using data transmission lines, the piezoelectric ceramic data acquisition instrument is connected through the data transmission lines, and the acceleration sensor 10 is connected to the external computer through the data transmission lines.
As an embodiment of the invention, the device further comprises a steel roof 17 arranged between said two sandwich structured sub-compartments and said gas compartment.
As an embodiment of the present invention, as shown in fig. 2, the apparatus further includes a concentration detector hole 7, and the concentration detector hole 7 is disposed in the gas chamber 1 and is used for connecting with a concentration detector.
In this embodiment, the concentration detector holes 7 are arranged in the side wall of the gas cabin of the pipe gallery in order to determine the mixing ratio of natural gas and air and to wire the detonators at an earlier stage. Specifically, the concentration of natural gas in the gas cabin is measured by a handheld detector of protective equipment worn by a worker in a concentration detector hole 7 so as to achieve a test condition.
As an embodiment of the present invention, as shown in fig. 5, the device further comprises a piezoelectric intelligent aggregate 13, and the piezoelectric intelligent aggregate 13 is embedded inside the reinforced concrete shell 8 before the reinforced concrete shell 8 is poured with concrete.
In this embodiment, the piezoelectric intelligent aggregates 13 are pre-embedded in the reinforced concrete shell 8 of the pipe gallery experimental model before the reinforced concrete shell 8 is concreted, and the piezoelectric intelligent aggregates are respectively arranged on the side wall of the lower gas cabin according to the designed positions. The piezoelectric intelligent aggregate 13 is provided with a system of an active detection technology and a passive detection technology.
As an embodiment of the present invention, as shown in fig. 4, the shock wave pressure sensor includes a wall pressure type shock wave pressure sensor 11 and a free field shock wave pressure sensor 12.
As an embodiment of the present invention, the apparatus further includes a natural gas inflator, the natural gas inflator is provided with a pressure gauge and a pressure release valve, and the natural gas inflator is connected to the inflation hole 5.
As an embodiment of the present invention, as shown in fig. 6, the apparatus further includes a plurality of vibration speed sensors 14, and the vibration speed sensors 14 are disposed at the periphery of the reinforced concrete casing 8 to measure rock-soil vibration at the periphery of the reinforced concrete casing.
In this embodiment, as shown in fig. 6, when carrying out the pipe gallery test experiment, according to actual pipe gallery earthing soil body 15, arrange vibration velocity sensor 14 at the earth's surface, monitor gas explosion and arouse seismic wave transmission characteristic, study peripheral ground stability.
As an embodiment of the invention, the device further comprises an initiator, which is connected to the gas capsule 1 by means of a detonating cord.
In the present embodiment, as shown in fig. 6, natural gas is filled through the gas filling hole 5 to form a natural gas detonation source 16, and the concentration of natural gas in the gas tank is measured by using the concentration detector hole 7 to achieve experimental conditions. Specifically, by operating the initiator to connect the pre-buried detonating cord and preparing the wireless remote control detonating device, both are detonated simultaneously, and the natural gas detonation source 16 is detonated.
In addition, through unmanned aerial vehicle video recording equipment, operation unmanned aerial vehicle shoots the process of gas explosion in the record piping lane model. And operating the computer to record and simulate the dynamic response experimental data of the urban pipe gallery gas explosion. Wherein, unmanned aerial vehicle hovers in pipe gallery model top, flame blowout situation when record pipe gallery gas explosion.
Furthermore, the standard section structure of the gas cabin 1 of the device adopts reinforced concrete 8 and adopts standard section reinforcing bars.
The invention can be used for model experiment research of simulating urban pipe gallery gas explosion dynamic response, is used for researching the damage form, the dynamic response and the like of the pipe gallery structure under different explosion conditions (natural gas concentration and explosion TNT equivalent), and has the characteristics of accuracy, reliability, accuracy, safety, strong operability, strong controllability, high similarity with actual conditions and the like.
Different effects produced by explosion under different natural gas concentrations can be obtained by adjusting different concentrations. The structure of the pipe gallery experimental device is scaled according to the actual pipe gallery, so that the similarity and reliability of the experiment are effectively guaranteed; the two sandwich structures are sealed through the steel top cover and the steel top cover, so that the tightness of the gas cabin can be ensured, the gas concentration for the explosion test is obtained, and the test precision is ensured; the pre-embedded piezoelectric intelligent aggregate and the pre-arranged cable conversion hole enable the sensor to be mounted more conveniently and rapidly, and the sensor cannot be damaged easily
The pipe gallery experimental device is manufactured according to a reduced proportion, the experimental result of the pipe gallery experimental device is analyzed by adopting a similar theory, a gas explosion experiment can be synchronously carried out, and the experimental investment cost and time are saved. Have two sandwich structure among the experimental apparatus, can simulate gas explosion and to the influence of piping lane auxiliary structure, according to piping lane structure damage destruction degree and to the influence of peripheral ground stability, provide data support for the antiknock structure of utility tunnel and the major position of auxiliary structure carries out optimal design.
The embodiment of the invention also provides a gas explosion simulation experiment method for the gas cabin of the urban comprehensive pipe gallery, which comprises the following steps: and natural gas is filled into the gas cabin of the urban comprehensive pipe gallery gas cabin gas explosion simulation experiment device, the natural gas concentration in the gas cabin is detected through a natural gas detector, when the natural gas concentration reaches the preset concentration, the natural gas is detonated, and an acceleration sensor and a shock wave pressure sensor in the device are utilized to acquire experiment data.
In this embodiment, based on the gas explosion experimental model for the pipe gallery gas cabin of the present invention, gas explosion simulation experiments under different natural gas concentrations are performed. Specifically, the natural gas is filled into the inflating hole of the device, the concentration change of the gas is monitored in the concentration detector hole, and when the concentration reaches an experimental value and is stable, the inflating hole and the concentration detector hole are closed to perform an explosion experiment. While monitoring experimental data by sensors. In the experimentation, can adopt unmanned aerial vehicle monitoring system to carry out the photographic monitoring in step to the inside gas explosion experimentation of piping lane.
According to the invention, through accurate simulation of gas explosion of the urban pipe gallery, the influence of the gas explosion on the auxiliary structure of the pipe gallery can be simulated, and the research on the gas explosion of the pipe gallery gas cabin with the two-interlayer structure under different explosion conditions is realized by utilizing the damage degree of the pipe gallery structure and the influence on the stability of peripheral rock soil, so that the simulation experiment has the characteristics of accuracy, reliability, accuracy, safety, strong operability, strong controllability, high similarity with the actual condition and the like.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a city utility tunnel gas cabin gas explosion simulation experiment device, a serial communication port, the device is including setting up gas cabin, next door cabin and two sandwich structure subdivision in the reinforced concrete shell, wherein:
the gas cabin is adjacent to the bulkhead cabin, a plurality of shock wave measuring line lifting hooks and a plurality of acceleration sensors are arranged on the inner wall of the gas cabin, and the shock wave measuring line lifting hooks are used for fixing the shock wave pressure sensors;
the two-sandwich-structure sub-chamber is arranged above the gas chamber and forms a two-sandwich structure with the gas chamber, and a steel top cover is arranged at the top of the two-sandwich-structure sub-chamber;
and an inflation hole is arranged between the two sandwich structure sub-compartments and the gas compartment and is used for conveying natural gas into the gas compartment.
2. The apparatus of claim 1, further comprising a plurality of cable transition holes, wherein the cable transition holes are disposed between the two-sandwich-structure chamber and the gas chamber, and wherein threads are disposed inside the cable transition holes for connecting the shock wave pressure sensor and the data transmission line.
3. The apparatus of claim 1, further comprising a steel cap disposed between the two-sandwich structured sub-tank and the gas tank.
4. The apparatus of claim 1, further comprising a concentration meter port disposed within the gas compartment for connection to a concentration meter.
5. The apparatus of claim 1, further comprising a piezoelectric smart aggregate embedded inside the reinforced concrete housing before the reinforced concrete housing is cast with concrete.
6. The device of claim 1, wherein the shock wave pressure sensor comprises a wall pressure shock wave pressure sensor and a free field shock wave pressure sensor.
7. The device of claim 1, further comprising a natural gas inflator pump, wherein the natural gas inflator pump is provided with a pressure gauge and a pressure relief valve, and the natural gas inflator pump is connected with the inflation hole.
8. The apparatus of claim 1, further comprising a plurality of vibration speed sensors disposed at the periphery of the reinforced concrete outer shell for measuring geotechnical vibration at the periphery of the reinforced concrete outer shell.
9. The device of claim 1, further comprising an initiator connected to the gas capsule by a detonating cord.
10. A gas explosion simulation experiment method for a gas cabin of an urban comprehensive pipe gallery is characterized by comprising the following steps: the gas cabin of the gas cabin gas explosion simulation experiment device of the urban comprehensive pipe gallery according to any one of claims 1 to 9 is filled with natural gas, the natural gas concentration in the gas cabin is detected by a natural gas detector, when the natural gas concentration reaches a preset concentration, the natural gas is detonated, and an acceleration sensor and a shock wave pressure sensor in the device are used for acquiring experiment data.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959620A (en) * | 2021-10-20 | 2022-01-21 | 南京君缘科爆工程技术有限公司 | Method for evaluating explosion power of indoor natural gas based on explosion velocity |
| CN115791228A (en) * | 2022-11-07 | 2023-03-14 | 南京理工大学 | Simulation experiment device for explosion effect in urban civil air defense facility |
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