Classification evaluation system and evaluation method based on environmental safety of tunnel constructors
The system, which combines environmental monitoring, safety assessment, and automatic adjustment modules, solves the problem of comprehensive assessment of the tunnel construction environment, realizes intelligent and visualized environmental monitoring and adjustment, reduces health risks to construction workers, and provides a safer construction environment.
Patent Information
- Application Number
- CN202511107260.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2025-11-25
AI Technical Summary
Existing technologies cannot comprehensively measure and assess the tunnel construction environment, resulting in an inability to accurately reflect the current state of environmental safety, and monitoring data and control standards lack comprehensive evaluation criteria.
The system employs a combination of environmental monitoring, safety assessment, and automatic control modules, including sensors for dust, gas, harmful gases, temperature, and noise. It performs environmental safety classification through a multi-index pollutant model and controls the environment through ventilation, spraying, and cooling units.
It enables intelligent and visual monitoring and assessment of the tunnel construction environment, reducing occupational health risks for construction workers and providing a safer, more stable, and economical construction environment.
Smart Images
Figure CN121010085A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of tunnel engineering, and particularly relates to a hierarchical evaluation system and method based on environment safety of tunnel construction personnel. BACKGROUND
[0002] Tunnel construction is usually carried out in an underground closed environment, and involves a large amount of physical work, such as blasting, excavation, etc., which may produce harmful gases, dust and noise. The environmental conditions inside the tunnel, such as temperature, humidity, etc., are quite different from the external environment, which may cause the construction personnel to be in an adverse environment such as high temperature. Therefore, the health protection of construction personnel and the environmental protection measures during construction are the problems that need to be considered in tunnel construction.
[0003] In the process of tunnel construction, especially in the process of blasting, a certain concentration of gun smoke will be produced, which contains harmful gases such as nitrogen oxides and carbon monoxide. These harmful gases will directly endanger the construction personnel, and a large amount of dust will be produced in the blasting process, which will cause harm to the respiratory system of the construction personnel. The large mechanical equipment used in the process of tunnel construction often produces strong noise, and the closed environment inside the tunnel, the work of numerous large mechanical equipment and the blasting environment result in a high temperature inside the tunnel. Long-term work in the noise and high temperature environment may adversely affect the health of the construction personnel. At present, for the environmental safety of the construction personnel in the tunnel, a single environmental monitor cannot comprehensively reflect the environmental quality, and cannot grade the environmental safety. The processing and analysis of the monitoring data and the control standard usually adopt single factor, there is no comprehensive evaluation standard, and the current environmental safety status cannot be truly reflected.
[0004] In view of the above, there is an urgent need for a system that can comprehensively evaluate the environmental quality to solve the problems in the prior art. SUMMARY
[0005] The present application aims to provide a hierarchical evaluation system and method based on environment safety of tunnel construction personnel to solve the technical problem that the environmental quality cannot be comprehensively measured and evaluated in the prior art. The specific technical solutions are as follows:
[0006] The present application provides a hierarchical evaluation system based on environment safety of tunnel construction personnel, comprising:
[0007] An environment monitoring module for measuring the measured value, the environment monitoring module comprising a dust monitoring sensor, a gas monitoring sensor, a harmful gas concentration monitoring sensor, an oxygen concentration monitoring sensor, a temperature monitoring sensor and a noise monitoring sensor;
[0008] The signal is connected to the environment safety evaluation module of the environment monitoring module, the environment safety evaluation module comprises a multi-index pollutant model, the multi-index pollutant model is used for calculating multi-index pollutant values by measured values, and environment safety classification is performed according to the multi-index pollutant values.
[0009] According to the environment safety classification, the tunnel environment is regulated, and the environment automatic regulation module connected to the environment safety evaluation module and the environment monitoring module comprises a ventilation unit, an automatic spraying unit, a cooling unit and an emergency response unit for regulating the tunnel environment.
[0010] The further improvement of the tunnel construction personnel environment safety classification evaluation system is that the measured values comprise silica concentration, gas content, harmful gas content, temperature, noise and oxygen content, and each measured value is given a corresponding pollutant critical value under environment safety air quality.
[0011] The further improvement of the tunnel construction personnel environment safety classification evaluation system is that the harmful gas concentration monitoring sensor measures the carbon monoxide concentration, carbon dioxide content and nitrogen dioxide concentration in the air.
[0012] The application also provides an evaluation method using the tunnel construction personnel environment safety classification evaluation system, comprising the following steps:
[0013] The measured value of the silica concentration in the air is measured by the dust sensor, the measured value of the gas content in the air is measured by the gas monitoring sensor, the measured value of the harmful gas content in the air is measured by the harmful gas concentration monitoring sensor, the measured value of the oxygen content in the air is measured by the oxygen concentration monitoring sensor, the measured value of the temperature in the tunnel is measured by the temperature monitoring sensor, and the measured value of the noise in the tunnel is measured by the noise monitoring sensor.
[0014] All measured values are calculated to obtain multi-index pollutant values by the multi-index pollutant model, and environment safety classification is performed according to the multi-index pollutant values.
[0015] The environment automatic regulation module regulates the tunnel environment by the ventilation unit, the automatic spraying unit, the cooling unit and the emergency response unit according to the environment safety classification.
[0016] The further improvement of the tunnel construction personnel environment safety grading evaluation method is that when the multi-index pollutant value is less than 1, the environment is rated as good or excellent, and the environment automatic adjustment module is not started; when the multi-index pollutant value is greater than or equal to 1, the environment is rated as pollution or serious pollution, and when any of the measured values exceeds the pollutant critical value, the environment automatic adjustment module is used for intelligent control of the index until the current construction environment reaches the normal range through the environment monitoring module and the environment safety evaluation unit.
[0017] The further improvement of the tunnel construction personnel environment safety grading evaluation method is that when the multi-index pollutant value is less than 1, the environment is rated as good or excellent, and the environment automatic adjustment module is not started; when the multi-index pollutant value is greater than or equal to 1, the environment is rated as pollution or serious pollution, and when any of the measured values exceeds the pollutant critical value, the environment automatic adjustment module is used for intelligent control of the index until the current construction environment reaches the normal range through the environment monitoring module and the environment safety evaluation unit.
[0018] The further improvement of the tunnel construction personnel environment safety grading evaluation method is that the multi-index pollutant model expression is:
[0019]
[0020] In the formula, a() represents the value of the substance in the parentheses, SiO2 represents the concentration of silicon dioxide, CO represents carbon monoxide, CO2 represents the content of carbon dioxide, NO2 represents nitrogen dioxide, T represents temperature, and O2 represents oxygen.
[0021] The further improvement of the tunnel construction personnel environment safety grading evaluation method is that when the multi-index pollutant value is less than 1, the environment is rated as good or excellent, and the environment automatic adjustment module is not started; when the multi-index pollutant value is greater than or equal to 1, the environment is rated as pollution or serious pollution, and when any of the measured values exceeds the pollutant critical value, the environment automatic adjustment module is used for intelligent control of the index until the current construction environment reaches the normal range through the environment monitoring module and the environment safety evaluation unit.
[0022]
[0023] In the formula, S represents the set of each pollutant and environmental index, a() represents the value of the substance in the parentheses, SiO2 represents the concentration of silicon dioxide, CO represents carbon monoxide, CO2 represents the content of carbon dioxide, NO2 represents nitrogen dioxide, T represents temperature, and O2 represents oxygen.
[0024] The technical scheme of the present application has the following beneficial effects:
[0025] The application is based on a tunnel construction personnel environment safety grading evaluation system and an evaluation method, and solves the technical problem that the environment quality cannot be comprehensively measured and evaluated in the prior art by monitoring and adjusting cooperation of an environment monitoring module, an environment safety evaluation module and an environment automatic adjustment module. The application can realize monitoring, evaluation and adjustment integration, provides an intelligent and visual environment monitoring and evaluation tool for tunnel construction personnel, realizes real-time grasping of the environment status of a construction site, reduces the occupational health risk of construction personnel and improves construction safety. The application can comprehensively evaluate the tunnel construction environment and control the tunnel construction environment adjustment module to realize functions such as cooling, ventilation and dust reduction, and provide a safer, more stable and more economical and effective construction environment.
[0026] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0027] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiments of the application and assist in the explanation of the application. In the drawings:
[0028] Figure 1 It is a flowchart of the tunnel construction personnel environment safety grading evaluation system;
[0029] Figure 2 It is a schematic diagram of the tunnel construction personnel environment safety grading evaluation system;
[0030] Figure 3 It is a tunnel construction environment monitoring module of the tunnel construction personnel environment safety grading evaluation system;
[0031] In the drawings: 1, environment monitoring module, 2, environment safety evaluation module, 3, environment automatic adjustment module, 4, automatic spraying unit, 5, ventilation unit, 6, cooling unit, 7, emergency response unit, 8, dust monitoring sensor, 9, gas monitoring sensor, 10, harmful gas concentration monitoring sensor, 11, oxygen concentration monitoring sensor, 12 temperature monitoring sensor, 13, noise monitoring sensor. DETAILED DESCRIPTION
[0032] The embodiments of the application will be described in detail below with reference to the drawings, but the application can be implemented in various different ways limited and covered by the claims.
[0033] Referring to Figures 1-3 As shown in the drawings, a tunnel construction personnel environment safety grading evaluation system comprises:
[0034] The environment monitoring module 1 module for measuring the measured value, the environment monitoring module 1 includes dust monitoring sensor 8, gas monitoring sensor 9, harmful gas concentration monitoring sensor, oxygen concentration monitoring sensor 11, temperature monitoring sensor 12 and noise monitoring sensor 13;
[0035] The signal is connected to the environment safety evaluation module 2 of the environment monitoring module 1 module, and the environment safety evaluation module 2 includes a multi-index pollutant model, which is used to calculate a multi-index pollutant value by the measured value, and to grade the environmental safety according to the multi-index pollutant value;
[0036] According to the environmental safety classification, the tunnel environment is regulated, and the environmental automatic regulation module 3 is connected to the environment safety evaluation module 2 and the environment monitoring module 1 module, and the environmental automatic regulation module 3 includes a ventilation unit 5, an automatic spraying unit 4, a cooling unit 6 and an emergency response unit 7 for regulating the tunnel environment.
[0037] Preferably, the measured value includes silica concentration, gas content, harmful gas content, temperature, noise and oxygen content, and each measured value is given a corresponding pollutant critical value under the environmental safety air quality. Based on the main environmental pollution sources in the tunnel construction process, the environmental risk factors are summarized, and the environmental risk indicators are determined as silica concentration / (mg / m3), gas content / (volume content), temperature / (℃), noise / (dB) and oxygen content / (volume content).
[0038] Further, the calculation method of air quality index in "Technical Regulation for Environmental Air Quality Index (AQI)" (HJ633-2012) is used to calculate the IAQI (Individual Air Quality, air quality index) index value of each pollutant, and the maximum index is selected as the AQI (air quality index) of the day:
[0039] AQI = max(IAQI1, IAQI2, IAQI3, …, IAQIn) n )
[0040] In the formula: IAQI is the air quality index; n is the pollutant item.
[0041] By inputting the pollutant concentration data, the environmental air quality index value of the day is obtained. The basic logic of the single-index AQI model is to use a certain pollutant with the largest concentration and the most prominent impact in the environment to express the air quality.
[0042] Further, the multi-pollutant AQI model is used to evaluate the environmental air quality, which quantifies and superimposes the risk of each pollutant that may exist in the environment, and finally expresses it in a superimposed form.
[0043] Further, the present application establishes a method for environmental safety evaluation of multi-pollutant indexes in tunnel construction process, MAQI model (Muti-pollutant AQI, multi-index pollutant model), to reflect the environmental quality in complex pollutants, and grade the environment, design the air quality evaluation system standard, including the main pollutants in the environment; in connection with the national environmental air quality standard; reflecting the real environmental air quality; can be used for real-time early warning.
[0044] Preferably, the harmful gas concentration monitoring sensor measures the carbon monoxide concentration in the air / (mg / m 3 ), carbon dioxide content / (volume content), nitrogen dioxide concentration / (mg / m 3 ).
[0045] Further, by measuring eight environmental indexes of silicon dioxide concentration / (mg / m 3 ), gas content / (volume content / %), carbon monoxide concentration / (mg / m 3 ), carbon dioxide content / (volume content / %), nitrogen dioxide concentration / (mg / m 3 ), temperature / (℃), noise / (dB) and oxygen content / (volume content / %), as the superposition index of its MAQI method, the preliminary model is:
[0046] In the formula: MAQI represents the multi-index pollutant model; P i represents the pollutant and environmental index.
[0047] Further, the air quality is expressed in a linear combination of multiple pollutants, and the air quality index is shown in the form of concentration. The evaluation index is rich, covering the pollutants and other environmental indexes in the current AQI evaluation index model. This formula conforms to the purpose of using multiple pollutants as indexes to express the air quality index, but the defects are also obvious. The risk values of different evaluation indexes differ greatly, so the MAQI value (multi-index pollutant value) is directly dominated by the concentration with the largest risk value and ignores the different pollutant information or risks contained in other pollutant concentrations. The way of directly superimposing the index in the form of pollutant concentration is not appropriate. Therefore, the different indexes are normalized, that is, each pollutant is given the critical value of each pollutant under the optimal environmental air quality as the denominator and superimposed. If only one index exceeds the standard, the calculation result is still within the acceptable range, and the segmented evaluation is carried out, and the MAQI model (multi-index pollutant model) is proposed:
[0048]
[0049] Wherein: a() represents the value of the substance in the parentheses, SiO2 represents the concentration of silicon dioxide, CO represents carbon monoxide, CO2 represents the carbon dioxide content, NO2 represents nitrogen dioxide, T represents temperature, and O2 represents oxygen.
[0050] In the above formula, if only one index is slightly over the standard, and other indexes are very good, the calculation result is still good. Therefore, the formula needs to be evaluated in sections, and if an index is over the standard, only the index that is over the standard is calculated to calculate the pollution degree. That is, the formula is as follows:
[0051]
[0052] Wherein: S represents the set of each pollutant and environmental index; a() represents the value of the substance in the parentheses, SiO2 represents the concentration of silicon dioxide, CO represents carbon monoxide, CO2 represents the carbon dioxide content, NO2 represents nitrogen dioxide, T represents temperature, and O2 represents oxygen.
[0053] Further, through the eight environmental indexes transmitted by the environmental monitoring module 1, the MAQI value (multi-index pollutant value) is evaluated, and the environmental safety of the tunnel construction personnel is rated.
[0054] Further, the environmental automatic adjustment module 3 receives the environmental hazard index value from the environmental monitoring module 1 through the environmental safety evaluation module 2, and evaluates the MAQI (multi-index pollutant) of the real-time environment of the tunnel.
[0055] Preferably, when the multi-index pollutant value is less than 1, the environmental rating is good or excellent, and the environmental automatic adjustment module 3 is not started; when the multi-index pollutant value is greater than or equal to 1, the environmental rating is pollution or serious pollution, and the environmental automatic adjustment module 3 works when any of the measured values exceeds the critical value of the pollutant.
[0056] On the other hand, the application also provides an evaluation method using the grading evaluation system based on the environmental safety of tunnel construction personnel as described above, which comprises the following steps:
[0057] As shown in Figure 3 The measured value of the concentration of silicon dioxide in the air is measured by a dust sensor, the measured value of the gas content in the air is measured by a gas monitoring sensor 9, the measured value of the harmful gas content in the air is measured by a harmful gas concentration monitoring sensor, the measured value of the oxygen content in the air is measured by an oxygen concentration monitoring sensor 11, the measured value of the temperature in the tunnel is measured by a temperature monitoring sensor 12, and the measured value of the noise in the tunnel is measured by a noise monitoring sensor 13.
[0058] The multi-index pollutant value is calculated by the multi-index pollutant model from all the measured values, and the environmental safety is graded according to the multi-index pollutant value.
[0059] As shown in Figure 2 , the environmental automatic adjustment module 3 controls the tunnel environment according to the environmental safety classification through the ventilation unit 5, the automatic spraying unit 4, the cooling unit 6 and the emergency response unit 7. The ventilation unit 5 and the cooling unit 6 can be realized by negative pressure fan cooling equipment, air conditioning fan, etc., the spraying unit 4 can be realized by water mist spraying device, and the emergency response unit 7 can be realized by alarm or alarm lamp.
[0060] Specifically, the multi-index pollutant model evaluates and classifies the tunnel construction environment through the evaluation program stored therein, and when the environmental rating is pollution or above, the environmental automatic adjustment module 3 controls the environment. When the environmental safety rating is good or excellent, the environmental automatic adjustment module 3 stops working.
[0061] Preferably, the measured values of the concentration of silicon dioxide, gas content, harmful gas content, temperature, noise and oxygen content are assigned to the corresponding pollutant critical value under the environmental safety air quality.
[0062] Preferably, when the multi-index pollutant value is less than 1, the environmental rating is good or excellent, and the environmental automatic adjustment module 3 is not started; when the multi-index pollutant value is greater than or equal to 1, the environmental rating is pollution or serious pollution, and when any of the measured values exceeds the pollutant critical value, the environmental automatic adjustment module 3 is used to intelligently control the index until the current construction environment reaches the normal range through the environmental monitoring module 1 and the environmental safety evaluation module 2. Thus, the functions of intelligent monitoring, intelligent evaluation and intelligent control are achieved.
[0063] Preferably, when measuring the actual value of the harmful gas content in the air by the harmful gas concentration monitoring sensor, the carbon monoxide concentration, carbon dioxide content and nitrogen dioxide concentration in the air are measured by the harmful gas concentration monitoring sensor.
[0064] In specific implementation, step 1: determine the main environmental pollution sources based on the tunnel construction process, and select the environmental hazard indicators as the concentration of silicon dioxide / (mg / m 3 ), gas content / (volume content), carbon monoxide concentration / (mg / m 3 ), carbon dioxide content / (volume content), nitrogen dioxide concentration / (mg / m 3 ), temperature / (℃), noise / (dB) and oxygen content / (volume content).
[0065] Step 2: The eight environmental evaluation index critical values of the concentration of silicon dioxide, gas content, carbon monoxide concentration, carbon dioxide content, nitrogen dioxide concentration, temperature, noise and oxygen content are used as the superposition index of the MAQI(multi-index pollutant) method.
[0066] Table 1: Eight environmental indicators of tunnel construction critical value:
[0067]
[0068] Step 3: For the environmental monitoring module 1, through the dust monitoring sensor 8, gas monitoring sensor 9, harmful gas concentration monitoring sensor 10, oxygen concentration monitoring sensor 11, temperature monitoring sensor 12 and noise monitoring sensor 13, the dust concentration, gas concentration, CO concentration, CO2 concentration, NO2 concentration, oxygen content, temperature and noise level in the tunnel are obtained, and the obtained information is transmitted to the environmental safety assessment module 2.
[0069] Step 4: For the established MAQI model (multi-index pollutant model), each pollutant is given the critical value of each pollutant under the environmental safety air quality as the denominator and is superimposed, and the construction personnel environmental safety classification is carried out according to the MAQI value (multi-index pollutant value).
[0070] Table 2: Tunnel construction personnel environmental safety classification standard:
[0071] Classification criteria Excellent Good Pollution Severe pollution MAQI <0.8 [0.8,1) [1,1.2) ≥1.2
[0072] Step 5: The environmental automatic adjustment module 3 receives the environmental hazard index value from the environmental monitoring module 1 through the environmental safety assessment module 2, and carries out MAQI (multi-index pollutant value) evaluation on the real-time environment of the tunnel.
[0073] Step 6: When the MAQI value (multi-index pollutant value) is less than 1, the environment is rated as good or excellent, and the environmental automatic adjustment module 3 does not work. When the MAQI value (multi-index pollutant value) is greater than or equal to 1, the environment is rated as pollution or serious pollution, and the information will be transmitted to the environmental automatic adjustment module 3. If a certain environmental hazard index exceeds the critical value, intelligent control will be carried out on the index until the environmental safety assessment module 2 determines that the current construction environment reaches the normal range and stops working. Intelligent monitoring, intelligent evaluation and intelligent control are achieved.
[0074] The application is based on a tunnel construction personnel environment safety grading evaluation system and an evaluation method, which solves the technical problem that the environment quality cannot be comprehensively measured and evaluated in the prior art by monitoring and adjusting cooperation of an environment monitoring module 1, an environment safety evaluation module 2 and an environment automatic adjustment module 3. The application can realize monitoring, evaluation and adjustment integration, provide an intelligent and visual environment monitoring and evaluation tool for tunnel construction personnel, master the environment condition of a construction site in real time, reduce the occupational health risk of construction personnel and improve construction safety. The application can comprehensively evaluate the tunnel construction environment and control the tunnel construction environment adjustment module to perform cooling, ventilation and dust reduction functions, and provide a safer, more stable and more economical and effective construction environment.
[0075] The above merely describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.
Claims
1. A tunnel construction personnel environment safety-based hierarchical evaluation system, characterized by, Comprise: The environment monitoring module module that measures the measured value, the environment monitoring module includes dust monitoring sensor, gas monitoring sensor, harmful gas concentration monitoring sensor, oxygen concentration monitoring sensor, temperature monitoring sensor and noise monitoring sensor; Signal connection in the environment monitoring module module environment safety evaluation module, the environment safety evaluation module includes multi-index pollutant model, the multi-index pollutant model is used to calculate the multi-index pollutant value by measured value, and the environment safety classification is carried out according to the multi-index pollutant value; According to the environment safety classification, the tunnel environment is regulated, and the environment automatic regulation module is signal connected to the environment safety evaluation module and the environment monitoring module module, and the environment automatic regulation module includes ventilation unit, automatic spraying unit, cooling unit and emergency response unit for regulating the tunnel environment.
2. The tunneling personnel environment safety-based grading evaluation system according to claim 1, wherein, The measured value includes silicon dioxide concentration, gas content, harmful gas content, temperature, noise and oxygen content, and each measurement value is given the corresponding pollutant critical value under the environment safety air quality.
3. The tunneling personnel environment safety-based grading evaluation system according to claim 1, wherein, The harmful gas concentration monitoring sensor measures the concentration of carbon monoxide, carbon dioxide content and nitrogen dioxide concentration in the air.
4. An evaluation method using the tunnel construction personnel environment safety-based hierarchical evaluation system according to claim 1, characterized by, Comprise the following steps: The measured value of the concentration of silicon dioxide in the air is measured by the dust sensor, the measured value of the gas content in the air is measured by the gas monitoring sensor, the measured value of the harmful gas content in the air is measured by the harmful gas concentration monitoring sensor, the measured value of the oxygen content in the air is measured by the oxygen concentration monitoring sensor, the measured value of the temperature in the tunnel is measured by the temperature monitoring sensor, and the measured value of the noise in the tunnel is measured by the noise monitoring sensor; Through the multi-index pollutant model, all measured values are calculated to obtain the multi-index pollutant value, and the environment safety classification is carried out according to the multi-index pollutant value; The environment automatic regulation module regulates the tunnel environment through ventilation unit, automatic spraying unit, cooling unit and emergency response unit according to the environment safety classification.
5. The method for grading assessment of tunnel construction personnel environment safety according to claim 4, characterized in that, When the multi-index pollutant value is less than 1, the environment rating is good or excellent, and the environment automatic regulation module is not started; when the multi-index pollutant value is greater than or equal to 1, the environment rating is pollution or serious pollution, and when any of the measured values exceeds the pollutant critical value, the intelligent regulation is carried out on the index through the environment automatic regulation module until the current construction environment reaches the normal range through the environment monitoring module monitoring and the environment safety evaluation unit.
6. The method for grading assessment of tunnel construction personnel environment safety according to claim 4, characterized in that, When measuring the measured value of the harmful gas content in the air by the harmful gas concentration monitoring sensor, the concentration of carbon monoxide, carbon dioxide content and nitrogen dioxide concentration in the air are measured by the harmful gas concentration monitoring sensor.
7. The method for grading assessment of tunnel construction personnel environment safety according to claim 4, characterized in that, The expression of the multi-index pollutant model is: In the formula: a() represents the value of the material in the parentheses, SiO2 represents the concentration of silicon dioxide, CO represents carbon monoxide, CO2 represents carbon dioxide content, NO2 represents nitrogen dioxide, T represents temperature, and O2 represents oxygen.
8. The method for grading assessment of tunnel construction personnel environment safety according to claim 7, characterized in that, When the environment safety classification is carried out according to the multi-index pollutant value, the classification evaluation is carried out by formula, and the calculation formula is as follows: where S represents a set of pollutants and environmental indicators, a() represents the value of the substance in the parentheses, SiO2 represents the concentration of silicon dioxide, CO represents carbon monoxide, CO2 represents carbon dioxide content, NO2 represents nitrogen dioxide, T represents temperature, and O2 represents oxygen.