Underground engineering safety monitoring method and system

Abstract

The invention provides an underground engineering safety monitoring method and system, and the method comprises the steps: estimating the oxygen consumption characteristic information and gas component change characteristic information in a site based on the personnel state data and air environment change data of an underground engineering site, and judging whether an oxygen deficit risk event occurs in the site or not; on the basis of the occurrence attribute of the hypoxia risk event, a target channel for ventilation operation is determined, ventilation and air exchange are conducted on a potential hypoxia area in the place in time, and hypoxia safety accidents are avoided; based on geologic structure dynamic data in the ventilation operation process of the target channel, geologic structure deformation trend information of the site is determined, and a geologic potential safety hazard area in the site is predicted according to the geologic structure deformation trend information; and on the basis of the position information of the geological potential safety hazard area and the personnel distribution information in the place, personnel safety evacuation attribute information is determined, so that notification messages are sent to terminals held by corresponding personnel, geological structure potential safety hazards caused by ventilation are checked, and safety monitoring comprehensiveness and reliability of underground engineering are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and in particular to a method and system for monitoring underground engineering safety. Background Art

[0002] The underground space of underground projects such as underground tunnel excavation and underground mining is limited in size, and the underground project site is densely populated with personnel. In order to ensure the normal and safe progress of underground projects, it is necessary to ensure that the underground projects have good ventilation conditions and solid geological structures. Existing underground projects will be built and equipped with multiple ventilation channels, and motor equipment will be installed inside the ventilation channels to achieve air exchange and ventilation between the underground space and the ground space to avoid the danger of hypoxia in the underground space. However, the underground space of underground projects is not evenly distributed, and the oxygen consumption rate in areas with a large number of personnel is faster, and high-intensity ventilation is more needed. At present, the ventilation of underground projects does not carry out targeted operations on the oxygen consumption of underground spaces, and also does not monitor and predict the geological structure movements caused by the ventilation process. It cannot accurately determine the geological structure safety hazards caused by ventilation, which reduces the comprehensiveness and reliability of safety monitoring of underground projects. Summary of the invention

[0003] In view of the defects of the prior art, the present invention provides a method and system for monitoring the safety of underground engineering. Based on the personnel status data and air environment change data of the underground engineering site, the oxygen consumption characteristic information and gas composition change characteristic information in the site are estimated, and the time domain change characterization of the oxygen consumption and gas composition change in the site is realized, so as to judge whether an oxygen deficiency risk event occurs in the site; based on the occurrence attributes of the oxygen deficiency risk event, the target channel for ventilation operation is determined, and the potential oxygen deficiency area in the site is ventilated in time to avoid the occurrence of oxygen deficiency safety accidents; based on the geological structure dynamic data of the ventilation operation process of the target channel, the geological structure deformation trend information of the site is determined, so as to predict the geological safety hazard area in the site; based on the location information of the geological safety hazard area and the personnel distribution information in the site, the personnel safety evacuation attribute information is determined, so as to send a notification message to the terminal held by the corresponding personnel, check the geological structure safety hazard caused by ventilation, and improve the comprehensiveness and reliability of the safety monitoring of underground engineering.

[0004] The present invention provides a method for underground engineering safety monitoring, comprising the following steps:

[0005] Step S1, obtaining personnel status data of an underground engineering site, and estimating oxygen consumption characteristic information of the underground engineering site based on the personnel status data; obtaining air environment change data in the underground engineering site, and estimating gas composition change characteristic information of the underground engineering site based on the air environment change data;

[0006] Step S2, judging whether an oxygen deficiency risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information; determining a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the oxygen deficiency risk event;

[0007] Step S3, obtaining geological structure dynamic data of the target channel during the ventilation operation process, determining geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data; and predicting geological safety hazard areas in the underground engineering site based on the geological structure deformation trend information;

[0008] Step S4, based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information in the underground engineering site, determine the attribute information for safe evacuation of personnel in the underground engineering site; based on the attribute information for safe evacuation of personnel, send a notification message to the terminal held by the corresponding personnel in the underground engineering site.

[0009] In one embodiment disclosed in the present application, in the step S1, obtaining personnel status data of the underground engineering site, estimating oxygen consumption characteristic information of the underground engineering site based on the personnel status data; obtaining air environment change data in the underground engineering site, estimating gas composition change characteristic information of the underground engineering site based on the air environment change data, including:

[0010] Perform visible light scanning and thermal infrared scanning inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the underground engineering site; analyze the visible light images of the personnel to obtain personnel distribution data in the underground engineering site; analyze the thermal infrared images of the personnel to obtain respiratory status data of all personnel in the underground engineering site; estimate oxygen consumption rate information of all working areas inside the underground engineering site based on the personnel distribution data and the respiratory status data;

[0011] Distributed detection is performed on the air environment in the underground engineering site to obtain oxygen content change data at several position points in the air environment; based on the three-dimensional spatial coordinates of all position points, the oxygen content change data at all positions are integrated and analyzed to estimate the oxygen component content change rate information at the underground engineering site.

[0012] In one embodiment disclosed in the present application, in the step S2, judging whether an oxygen deficiency risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information; and determining a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the oxygen deficiency risk event, including:

[0013] Compare the oxygen consumption rate information included in the oxygen consumption characteristic information with the oxygen content change rate information included in the gas composition change characteristic information to determine whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel; if so, determine that no hypoxia risk event has occurred in the underground engineering site; if not, determine that a hypoxia risk event has occurred in the underground engineering site;

[0014] Based on the occurrence location information of the hypoxia risk event in the underground engineering site, a ventilation channel with the shortest air connectivity distance to the location where the hypoxia risk event occurs is determined as the target channel for ventilation operations at the underground engineering site.

[0015] In one embodiment disclosed in the present application, in the step S3, the geological structure dynamic data of the target channel during the ventilation operation is obtained, and the geological structure deformation trend information of the underground engineering site is determined based on the geological structure dynamic data; based on the geological structure deformation trend information, the geological safety hazard area in the underground engineering site is predicted, including:

[0016] Performing dynamic displacement detection on the underground area adjacent to the target channel during the ventilation operation to obtain displacement amplitude change data and displacement direction change data of the underground area, which are used as geological structure dynamic data; performing spatiotemporal evolution analysis on the displacement amplitude change data and the displacement direction change data to determine the geological structure settlement velocity change information of the underground engineering site;

[0017] Based on the geological structure settlement velocity change information, the geological structure settlement velocity difference of the underground area is identified, and sub-areas with uneven settlement velocity in the horizontal direction in the underground area are predicted, which are used as geological safety hazard areas in the underground engineering site.

[0018] In one embodiment disclosed in the present application, in the step S4, based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site, the attribute information of the safe evacuation of personnel in the underground engineering site is determined; based on the attribute information of the safe evacuation of personnel, a notification message is sent to the terminal held by the corresponding personnel in the underground engineering site, including:

[0019] Compare the projection range position information of the geological safety hazard area corresponding to the underground engineering site with the personnel distribution information of the underground engineering site, determine the shortest evacuation path information for the personnel located in the projection range of the geological safety hazard area in the underground engineering site for safe evacuation, and use this as the personnel safety evacuation attribute information;

[0020] The terminals held by the personnel located in the projection range of the geological safety hazard area in the underground engineering site are searched and located, so as to send a navigation notification message containing the shortest evacuation path information to the terminals held by the personnel.

[0021] The present invention also provides an underground engineering safety monitoring system, comprising:

[0022] An underground oxygen consumption identification module, used to obtain personnel status data of an underground engineering site, and estimate oxygen consumption characteristic information of the underground engineering site based on the personnel status data;

[0023] An underground air composition change identification module is used to obtain air environment change data in the underground engineering site, and estimate gas composition change characteristic information of the underground engineering site based on the air environment change data;

[0024] A hypoxia risk event judgment module, used to judge whether a hypoxia risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information;

[0025] A ventilation channel determination module, used to determine a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the hypoxia risk event;

[0026] A geological structure deformation identification module is used to obtain geological structure dynamic data of the target channel during the ventilation operation process, and determine the geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data;

[0027] A geological safety hazard area identification module is used to predict the geological safety hazard area in the underground engineering site based on the geological structure deformation trend information;

[0028] A safety evacuation state determination module, used to determine the attribute information of safe evacuation of personnel in the underground engineering site based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site;

[0029] The notification message sending module is used to send notification messages to terminals held by corresponding personnel in the underground engineering site based on the personnel safety evacuation attribute information.

[0030] In one embodiment disclosed in the present application, the underground oxygen consumption identification module is used to obtain personnel status data of the underground engineering site, and based on the personnel status data, estimate the oxygen consumption characteristic information of the underground engineering site, including:

[0031] Perform visible light scanning and thermal infrared scanning inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the underground engineering site; analyze the visible light images of the personnel to obtain personnel distribution data in the underground engineering site; analyze the thermal infrared images of the personnel to obtain respiratory status data of all personnel in the underground engineering site; estimate oxygen consumption rate information of all working areas inside the underground engineering site based on the personnel distribution data and the respiratory status data;

[0032] The underground air composition change identification module is used to obtain air environment change data in the underground engineering site, and estimate gas composition change characteristic information of the underground engineering site based on the air environment change data, including:

[0033] Distributed detection is performed on the air environment in the underground engineering site to obtain oxygen content change data at several position points in the air environment; based on the three-dimensional spatial coordinates of all position points, the oxygen content change data at all positions are integrated and analyzed to estimate the oxygen component content change rate information at the underground engineering site.

[0034] In one embodiment disclosed in the present application, the hypoxia risk event judgment module is used to judge whether a hypoxia risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information, including:

[0035] Compare the oxygen consumption rate information included in the oxygen consumption characteristic information with the oxygen content change rate information included in the gas composition change characteristic information to determine whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel; if so, determine that no hypoxia risk event has occurred in the underground engineering site; if not, determine that a hypoxia risk event has occurred in the underground engineering site;

[0036] The ventilation channel determination module is used to determine a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the hypoxia risk event, including:

[0037] Based on the occurrence location information of the hypoxia risk event in the underground engineering site, a ventilation channel with the shortest air connectivity distance to the location where the hypoxia risk event occurs is determined as the target channel for ventilation operations at the underground engineering site.

[0038] In one embodiment disclosed in the present application, the geological structure deformation identification module is used to obtain geological structure dynamic data of the target channel during the ventilation operation process, and determine the geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data, including:

[0039] Performing dynamic displacement detection on the underground area adjacent to the target channel during the ventilation operation to obtain displacement amplitude change data and displacement direction change data of the underground area, which are used as geological structure dynamic data; performing spatiotemporal evolution analysis on the displacement amplitude change data and the displacement direction change data to determine the geological structure settlement velocity change information of the underground engineering site;

[0040] The geological safety hazard area identification module is used to predict the geological safety hazard area in the underground engineering site based on the geological structure deformation trend information, including:

[0041] Based on the geological structure settlement velocity change information, the geological structure settlement velocity difference of the underground area is identified, and sub-areas with uneven settlement velocity in the horizontal direction in the underground area are predicted, which are used as geological safety hazard areas in the underground engineering site.

[0042] In one embodiment disclosed in the present application, the safe evacuation state determination module is used to determine the attribute information of safe evacuation of personnel in the underground engineering site based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site, including:

[0043] Compare the projection range position information of the geological safety hazard area corresponding to the underground engineering site with the personnel distribution information of the underground engineering site, determine the shortest evacuation path information for the personnel located in the projection range of the geological safety hazard area in the underground engineering site for safe evacuation, and use this as the personnel safety evacuation attribute information;

[0044] The notification message sending module is used to send a notification message to a terminal held by a corresponding person in the underground engineering site based on the personnel safety evacuation attribute information, including:

[0045] The terminals held by the personnel located in the projection range of the geological safety hazard area in the underground engineering site are searched and located, so as to send a navigation notification message containing the shortest evacuation path information to the terminals held by the personnel.

[0046] Compared with the prior art, the underground engineering safety monitoring method and system estimate the oxygen consumption characteristic information and gas composition change characteristic information in the underground engineering site based on the personnel status data and air environment change data of the underground engineering site, realize the time domain change characterization of the oxygen consumption and gas composition change in the site, so as to judge whether an oxygen deficiency risk event occurs in the site; based on the occurrence attributes of the oxygen deficiency risk event, determine the target channel for ventilation operation, and timely ventilate the potential oxygen deficiency area in the site to avoid oxygen deficiency safety accidents; based on the geological structure dynamic data of the ventilation operation process of the target channel, determine the geological structure deformation trend information of the site, so as to predict the geological safety hazard area in the site; also based on the location information of the geological safety hazard area and the personnel distribution information in the site, determine the personnel safety evacuation attribute information, so as to send notification messages to the terminals held by the corresponding personnel, check the geological structure safety hazards caused by ventilation, and improve the comprehensiveness and reliability of the safety monitoring of underground engineering.

[0047] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0048] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 A schematic flow chart of the underground engineering safety monitoring method provided by the present invention.

[0051] Figure 2 A schematic diagram of the framework of the underground engineering safety monitoring system provided by the present invention. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] See also Figure 1 , is a flow chart of a method for monitoring underground engineering safety provided by an embodiment of the present invention. The method for monitoring underground engineering safety includes:

[0054] Step S1, obtaining personnel status data of an underground engineering site, and estimating oxygen consumption characteristic information of the underground engineering site based on the personnel status data; obtaining air environment change data in the underground engineering site, and estimating gas composition change characteristic information of the underground engineering site based on the air environment change data;

[0055] Step S2, judging whether an oxygen deficiency risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information; determining a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the oxygen deficiency risk event;

[0056] Step S3, obtaining geological structure dynamic data of the target channel during the ventilation operation process, determining geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data; and predicting geological safety hazard areas in the underground engineering site based on the geological structure deformation trend information;

[0057] Step S4, based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site, determine the attribute information for safe evacuation of personnel in the underground engineering site; based on the attribute information for safe evacuation of personnel, send a notification message to the terminal held by the corresponding personnel in the underground engineering site.

[0058] The beneficial effects of the above technical scheme are as follows: the underground engineering safety monitoring method estimates the oxygen consumption characteristic information and gas composition change characteristic information in the underground engineering site based on the personnel status data and air environment change data of the underground engineering site, realizes the time domain change characterization of the oxygen consumption and gas composition change in the site, so as to judge whether an oxygen deficiency risk event occurs in the site; based on the occurrence attributes of the oxygen deficiency risk event, determines the target channel for ventilation operation, and timely ventilates the potential oxygen deficiency area in the site to avoid the occurrence of oxygen deficiency safety accidents; based on the geological structure dynamic data of the ventilation operation process of the target channel, determines the geological structure deformation trend information of the site, so as to predict the geological safety hazard area in the site; also based on the location information of the geological safety hazard area and the personnel distribution information in the site, determines the personnel safety evacuation attribute information, so as to send a notification message to the terminal held by the corresponding personnel, check the geological structure safety hazards caused by ventilation, and improve the comprehensiveness and reliability of the safety monitoring of underground engineering.

[0059] Preferably, in step S1, obtaining personnel status data of the underground engineering site, estimating oxygen consumption characteristic information of the underground engineering site based on the personnel status data; obtaining air environment change data in the underground engineering site, estimating gas composition change characteristic information of the underground engineering site based on the air environment change data, including:

[0060] Perform visible light scanning and thermal infrared scanning inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the underground engineering site; analyze the visible light images of the personnel to obtain personnel distribution data in the underground engineering site; analyze the thermal infrared images of the personnel to obtain respiratory status data of all personnel in the underground engineering site; based on the personnel distribution data and the respiratory status data, estimate the oxygen consumption rate information of all working areas inside the underground engineering site;

[0061] Distributed detection of the air environment in the underground engineering site is carried out to obtain oxygen content change data at several locations in the air environment; based on the three-dimensional spatial coordinates of all location points, the oxygen content change data at all locations are integrated and analyzed to estimate the oxygen component content change rate information of the underground engineering site.

[0062] The beneficial effects of the above technical solution are as follows: the internal space size of the underground engineering site is limited, and a certain number of personnel are distributed in the site for work. The number of personnel distributed in different areas of the underground engineering site is not the same, so the oxygen consumption rate in the area with a large number of personnel is also large. If the corresponding area is not ventilated in time or the oxygen delivered to the corresponding area cannot match the oxygen consumption, the probability of hypoxia safety accidents in the corresponding area will increase. In order to accurately determine whether hypoxia safety accidents will occur in underground engineering sites, it is necessary to accurately identify the oxygen consumption of personnel in the underground engineering site and the changes in the oxygen content in the air environment under the current ventilation conditions. To this end, visible light scanning and thermal infrared scanning are performed inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the site. Among them, the visible light image of personnel can globally reflect the number of personnel distribution data in the underground engineering site; the thermal infrared image of personnel can reflect the body heat of each person in the underground engineering site, and the body heat of personnel is positively correlated with the breathing intensity of personnel. By inverting the heat size of personnel thermal infrared images, the breathing intensity and breathing frequency of all personnel in the underground engineering site are determined, which are used as the breathing state data of all personnel; then combined with the personnel distribution number data and the breathing state data for combined analysis, the oxygen consumption rate information of all operating areas in the underground engineering site (that is, the oxygen consumption of each operating area per unit time) is estimated. In addition, multi-point distributed detection is performed on the air environment in the underground engineering site to obtain the oxygen content change data of several positions in the air environment, so as to quantitatively determine the oxygen content change of several discrete positions in the air environment. Then, based on the three-dimensional spatial coordinates of all positions in the air environment, the oxygen content change data of several positions in a discrete distribution state are continuously extended and fitted to estimate the oxygen component content change rate information of the underground engineering site, so as to achieve quantitative characterization of the increase or decrease of the oxygen component content of the underground engineering site in a unit time.

[0063] Preferably, in step S2, judging whether an oxygen deficiency risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information; and determining a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the oxygen deficiency risk event, including:

[0064] Compare the oxygen consumption rate information included in the oxygen consumption characteristic information with the oxygen content change rate information included in the gas composition change characteristic information to determine whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel; if so, determine that no hypoxia risk event has occurred in the underground engineering site; if not, determine that a hypoxia risk event has occurred in the underground engineering site;

[0065] Based on the occurrence location information of the hypoxia risk event in the underground engineering site, a ventilation channel with the shortest air connectivity distance to the location where the hypoxia risk event occurred is determined, and used as the target channel for ventilation operations at the underground engineering site.

[0066] The beneficial effects of the above technical solution are: comparing the oxygen consumption rate information contained in the oxygen consumption characteristic information with the oxygen content change rate information contained in the gas composition change characteristic information, judging whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel, thereby accurately and timely judging whether an oxygen deficiency risk event has occurred in the underground engineering site, and providing a reliable basis for the subsequent positioning of the target channel that needs to enhance ventilation operations. In addition, based on the occurrence location information of the oxygen deficiency risk event in the underground engineering site, the ventilation channel with the shortest air connection distance to the location where the oxygen deficiency risk event occurs is determined, and the location where the oxygen deficiency risk event occurs can be efficiently and quickly ventilated with the shortest ventilation distance, thereby improving the ventilation efficiency of the corresponding area in the underground engineering site.

[0067] Preferably, in step S3, the geological structure dynamic data of the target channel during the ventilation operation is obtained, and based on the geological structure dynamic data, the geological structure deformation trend information of the underground engineering site is determined; based on the geological structure deformation trend information, the geological safety hazard area in the underground engineering site is predicted, including:

[0068] During the ventilation operation of the target channel, the displacement of the adjacent underground area is dynamically detected to obtain the displacement amplitude change data and displacement direction change data of the underground area, which are used as the dynamic data of the geological structure; the time-space evolution analysis of the displacement amplitude change data and the displacement direction change data is performed to determine the geological structure settlement velocity change information of the underground engineering site;

[0069] Based on the information on the change in the settlement velocity of the geological structure, the difference in the settlement velocity of the geological structure in the underground area is identified, and sub-areas with uneven settlement velocity in the horizontal direction in the underground area are predicted, which are used as geological safety hazard areas in the underground engineering site.

[0070] The beneficial effects of the above technical solution are as follows: the ventilation operation of the target channel is to use the fan or gas compressor installed inside to perform active ventilation operation. These devices will generate vibration force during operation and transmit it to the underground area adjacent to the target channel. The underground area will be displaced under the influence of the vibration force. When the displacement amplitude of the underground area is too large or the displacement is uneven, it is easy to cause safety accidents such as geological structure settlement and collapse. For this reason, the displacement of the adjacent underground area during the ventilation operation of the target channel is dynamically detected (for example, using a fiber grating sensor to perform dynamic displacement detection), and the displacement amplitude change data and displacement direction change data of the underground area are obtained. Then, the displacement amplitude change data and the displacement direction change data are analyzed in time and space, and the geological structure settlement velocity change information of the underground engineering site is obtained, and the geological structure settlement velocity conditions of different sub-areas in the underground engineering site are differentiated and calibrated. In addition, based on the information on the change in the settlement velocity of the geological structure, the difference in the settlement velocity of the geological structure in the underground area is identified, the difference in settlement velocity between different sub-areas in the underground engineering site is determined, and sub-areas in the underground area with uneven settlement velocity in the horizontal direction are predicted, which are used as geological safety hazard areas in the underground engineering site.

[0071] Preferably, in step S4, based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site, the attribute information of safe evacuation of personnel in the underground engineering site is determined; based on the attribute information of safe evacuation of personnel, a notification message is sent to the terminal held by the corresponding personnel in the underground engineering site, including:

[0072] Compare the projection range position information of the geological safety hazard area in the underground engineering site with the personnel distribution information of the underground engineering site, and determine the shortest evacuation path information for the personnel in the projection range of the geological safety hazard area in the underground engineering site for safe evacuation, and use this as the personnel safe evacuation attribute information;

[0073] The terminal held by the personnel located in the projection range of the geological safety hazard area in the underground engineering site is searched and located, so as to send a navigation notification message containing the shortest evacuation path information to the terminal held by the personnel.

[0074] The beneficial effects of the above technical solution are: comparing the projection range position information of the geological safety hazard area corresponding to the underground engineering site with the personnel distribution information of the underground engineering site, determining the shortest evacuation path information for the safe evacuation of personnel within the projection range of the geological safety hazard area within the underground engineering site, and providing reliable and fast path navigation for the rapid and safe evacuation of personnel in the underground engineering site. In addition, searching and locating the terminal held by the personnel within the projection range of the geological safety hazard area within the underground engineering site, thereby sending a navigation notification message containing the shortest evacuation path information to the terminal held by the personnel, thereby improving the comprehensiveness and reliability of safety monitoring of underground engineering.

[0075] See also Figure 2 , is a schematic diagram of the framework of the underground engineering safety monitoring system provided by an embodiment of the present invention. The underground engineering safety monitoring system includes:

[0076] An underground oxygen consumption identification module is used to obtain personnel status data of an underground engineering site, and based on the personnel status data, estimate oxygen consumption characteristic information of the underground engineering site;

[0077] An underground air composition change identification module is used to obtain air environment change data in the underground engineering site, and estimate the gas composition change characteristic information of the underground engineering site based on the air environment change data;

[0078] A hypoxia risk event judgment module is used to judge whether a hypoxia risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information;

[0079] A ventilation channel determination module is used to determine a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the hypoxia risk event;

[0080] A geological structure deformation identification module is used to obtain the geological structure dynamic data of the target channel during the ventilation operation process, and determine the geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data;

[0081] A geological safety hazard area identification module is used to predict the geological safety hazard area in the underground engineering site based on the geological structure deformation trend information;

[0082] A safety evacuation state determination module is used to determine the attribute information of safe evacuation of personnel in the underground engineering site based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site;

[0083] The notification message sending module is used to send a notification message to the terminal held by the corresponding personnel in the underground engineering site based on the personnel safety evacuation attribute information.

[0084] The beneficial effects of the above technical scheme are as follows: the underground engineering safety monitoring system estimates the oxygen consumption characteristic information and gas composition change characteristic information in the underground engineering site based on the personnel status data and air environment change data of the underground engineering site, realizes the time domain change characterization of the oxygen consumption and gas composition change in the site, so as to judge whether an oxygen deficiency risk event occurs in the site; based on the occurrence attributes of the oxygen deficiency risk event, determines the target channel for ventilation operation, and timely ventilates the potential oxygen deficiency area in the site to avoid oxygen deficiency safety accidents; based on the geological structure dynamic data of the ventilation operation process of the target channel, determines the geological structure deformation trend information of the site, so as to predict the geological safety hazard area in the site; also based on the location information of the geological safety hazard area and the personnel distribution information in the site, determines the personnel safety evacuation attribute information, so as to send notification messages to the terminals held by the corresponding personnel, check the geological structure safety hazards caused by ventilation, and improve the comprehensiveness and reliability of the safety monitoring of underground engineering.

[0085] Preferably, the underground oxygen consumption identification module is used to obtain personnel status data of the underground engineering site, and based on the personnel status data, estimate oxygen consumption characteristic information of the underground engineering site, including:

[0086] Perform visible light scanning and thermal infrared scanning inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the underground engineering site; analyze the visible light images of the personnel to obtain personnel distribution data in the underground engineering site; analyze the thermal infrared images of the personnel to obtain respiratory status data of all personnel in the underground engineering site; based on the personnel distribution data and the respiratory status data, estimate the oxygen consumption rate information of all working areas inside the underground engineering site;

[0087] The underground air composition change identification module is used to obtain air environment change data in the underground engineering site, and based on the air environment change data, estimate the gas composition change characteristic information of the underground engineering site, including:

[0088] Distributed detection of the air environment in the underground engineering site is carried out to obtain oxygen content change data at several locations in the air environment; based on the three-dimensional spatial coordinates of all location points, the oxygen content change data at all locations are integrated and analyzed to estimate the oxygen component content change rate information of the underground engineering site.

[0089] The beneficial effects of the above technical solution are as follows: the internal space size of the underground engineering site is limited, and a certain number of personnel are distributed in the site for work. The number of personnel distributed in different areas of the underground engineering site is not the same, so the oxygen consumption rate in the area with a large number of personnel is also large. If the corresponding area is not ventilated in time or the oxygen delivered to the corresponding area cannot match the oxygen consumption, the probability of hypoxia safety accidents in the corresponding area will increase. In order to accurately determine whether hypoxia safety accidents will occur in underground engineering sites, it is necessary to accurately identify the oxygen consumption of personnel in the underground engineering site and the changes in the oxygen content in the air environment under the current ventilation conditions. To this end, visible light scanning and thermal infrared scanning are performed inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the site. Among them, the visible light image of personnel can globally reflect the number of personnel distribution data in the underground engineering site; the thermal infrared image of personnel can reflect the body heat of each person in the underground engineering site, and the body heat of personnel is positively correlated with the breathing intensity of personnel. By inverting the heat size of personnel thermal infrared images, the breathing intensity and breathing frequency of all personnel in the underground engineering site are determined, which are used as the breathing state data of all personnel; then combined with the personnel distribution number data and the breathing state data for combined analysis, the oxygen consumption rate information of all operating areas in the underground engineering site (that is, the oxygen consumption of each operating area per unit time) is estimated. In addition, multi-point distributed detection is performed on the air environment in the underground engineering site to obtain the oxygen content change data of several positions in the air environment, so as to quantitatively determine the oxygen content change of several discrete positions in the air environment. Then, based on the three-dimensional spatial coordinates of all positions in the air environment, the oxygen content change data of several positions in a discrete distribution state are continuously extended and fitted to estimate the oxygen component content change rate information of the underground engineering site, so as to achieve quantitative characterization of the increase or decrease of the oxygen component content of the underground engineering site in a unit time.

[0090] Preferably, the hypoxia risk event judgment module is used to judge whether a hypoxia risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information, including:

[0091] Compare the oxygen consumption rate information included in the oxygen consumption characteristic information with the oxygen content change rate information included in the gas composition change characteristic information to determine whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel; if so, determine that no hypoxia risk event has occurred in the underground engineering site; if not, determine that a hypoxia risk event has occurred in the underground engineering site;

[0092] The ventilation channel determination module is used to determine the target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the hypoxia risk event, including:

[0093] Based on the occurrence location information of the hypoxia risk event in the underground engineering site, a ventilation channel with the shortest air connectivity distance to the location where the hypoxia risk event occurred is determined, and used as the target channel for ventilation operations at the underground engineering site.

[0094] The beneficial effects of the above technical solution are: comparing the oxygen consumption rate information contained in the oxygen consumption characteristic information with the oxygen content change rate information contained in the gas composition change characteristic information, judging whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel, thereby accurately and timely judging whether an oxygen deficiency risk event has occurred in the underground engineering site, and providing a reliable basis for the subsequent positioning of the target channel that needs to enhance ventilation operations. In addition, based on the occurrence location information of the oxygen deficiency risk event in the underground engineering site, the ventilation channel with the shortest air connection distance to the location where the oxygen deficiency risk event occurs is determined, and the location where the oxygen deficiency risk event occurs can be efficiently and quickly ventilated with the shortest ventilation distance, thereby improving the ventilation efficiency of the corresponding area in the underground engineering site.

[0095] Preferably, the geological structure deformation identification module is used to obtain the geological structure dynamic data of the target channel during the ventilation operation process, and determine the geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data, including:

[0096] During the ventilation operation of the target channel, the displacement of the adjacent underground area is dynamically detected to obtain the displacement amplitude change data and displacement direction change data of the underground area, which are used as the dynamic data of the geological structure; the time-space evolution analysis of the displacement amplitude change data and the displacement direction change data is performed to determine the geological structure settlement velocity change information of the underground engineering site;

[0097] The geological safety hazard area identification module is used to predict the geological safety hazard area in the underground engineering site based on the geological structure deformation trend information, including:

[0098] Based on the information on the change in the settlement velocity of the geological structure, the difference in the settlement velocity of the geological structure in the underground area is identified, and sub-areas with uneven settlement velocity in the horizontal direction in the underground area are predicted, which are used as geological safety hazard areas in the underground engineering site.

[0099] The beneficial effects of the above technical solution are as follows: the ventilation operation of the target channel is to use the fan or gas compressor installed inside to perform active ventilation operation. These devices will generate vibration force during operation and transmit it to the underground area adjacent to the target channel. The underground area will be displaced under the influence of the vibration force. When the displacement amplitude of the underground area is too large or the displacement is uneven, it is easy to cause safety accidents such as geological structure settlement and collapse. For this reason, the displacement of the adjacent underground area during the ventilation operation of the target channel is dynamically detected (for example, using a fiber grating sensor to perform dynamic displacement detection), and the displacement amplitude change data and displacement direction change data of the underground area are obtained. Then, the displacement amplitude change data and the displacement direction change data are analyzed in time and space, and the geological structure settlement velocity change information of the underground engineering site is obtained, and the geological structure settlement velocity conditions of different sub-areas in the underground engineering site are differentiated and calibrated. In addition, based on the information on the change in the settlement velocity of the geological structure, the difference in the settlement velocity of the geological structure in the underground area is identified, the difference in settlement velocity between different sub-areas in the underground engineering site is determined, and sub-areas in the underground area with uneven settlement velocity in the horizontal direction are predicted, which are used as geological safety hazard areas in the underground engineering site.

[0100] Preferably, the safe evacuation state determination module is used to determine the attribute information of safe evacuation of personnel in the underground engineering site based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site, including:

[0101] Compare the projection range position information of the geological safety hazard area in the underground engineering site with the personnel distribution information of the underground engineering site, and determine the shortest evacuation path information for the personnel in the projection range of the geological safety hazard area in the underground engineering site for safe evacuation, and use this as the personnel safe evacuation attribute information;

[0102] The notification message sending module is used to send a notification message to a terminal held by a corresponding person in the underground engineering site based on the person's safe evacuation attribute information, including:

[0103] The terminal held by the personnel located in the projection range of the geological safety hazard area in the underground engineering site is searched and located, so as to send a navigation notification message containing the shortest evacuation path information to the terminal held by the personnel.

[0104] The beneficial effects of the above technical solution are: comparing the projection range position information of the geological safety hazard area corresponding to the underground engineering site with the personnel distribution information of the underground engineering site, determining the shortest evacuation path information for the safe evacuation of personnel within the projection range of the geological safety hazard area within the underground engineering site, and providing reliable and fast path navigation for the rapid and safe evacuation of personnel in the underground engineering site. In addition, searching and locating the terminal held by the personnel within the projection range of the geological safety hazard area within the underground engineering site, thereby sending a navigation notification message containing the shortest evacuation path information to the terminal held by the personnel, thereby improving the comprehensiveness and reliability of safety monitoring of underground engineering.

[0105] It can be seen from the contents of the above embodiments that the underground engineering safety monitoring method and system estimate the oxygen consumption characteristic information and gas composition change characteristic information in the underground engineering site based on the personnel status data and air environment change data of the underground engineering site, and realize the time domain change characterization of the oxygen consumption and gas composition change in the site, so as to judge whether an oxygen deficiency risk event occurs in the site; based on the occurrence attributes of the oxygen deficiency risk event, determine the target channel for ventilation operation, and ventilate the potential oxygen deficiency area in the site in time to avoid the occurrence of oxygen deficiency safety accidents; based on the geological structure dynamic data of the ventilation operation process of the target channel, determine the geological structure deformation trend information of the site, so as to predict the geological safety hazard area in the site; also based on the location information of the geological safety hazard area and the personnel distribution information in the site, determine the personnel safety evacuation attribute information, so as to send a notification message to the terminal held by the corresponding personnel, check the geological structure safety hazards caused by ventilation, and improve the comprehensiveness and reliability of the safety monitoring of underground engineering.

[0106] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for monitoring underground engineering safety, characterized in that: It includes the following steps: Step S1, obtaining personnel status data of an underground engineering site, and estimating oxygen consumption characteristic information of the underground engineering site based on the personnel status data; obtaining air environment change data in the underground engineering site, and estimating gas composition change characteristic information of the underground engineering site based on the air environment change data; Step S2, judging whether an oxygen deficiency risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information; Based on the occurrence attribute information of the hypoxia risk event, determining a target channel for ventilation operation of the underground engineering site; Step S3, obtaining geological structure dynamic data of the target channel during the ventilation operation process, and determining geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data; Based on the geological structure deformation trend information, predicting the geological safety hazard areas in the underground engineering site; Step S4, based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information in the underground engineering site, determine the attribute information for safe evacuation of personnel in the underground engineering site; based on the attribute information for safe evacuation of personnel, send a notification message to the terminal held by the corresponding personnel in the underground engineering site.

2. The underground engineering safety monitoring method according to claim 1, characterized in that: In the step S1, the personnel status data of the underground engineering site is obtained, and based on the personnel status data, the oxygen consumption characteristic information of the underground engineering site is estimated; Acquiring air environment change data in the underground engineering site, and estimating gas composition change characteristic information in the underground engineering site based on the air environment change data, including: Perform visible light scanning and thermal infrared scanning inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the underground engineering site; analyze the visible light images of the personnel to obtain personnel distribution data in the underground engineering site; analyze the thermal infrared images of the personnel to obtain respiratory status data of all personnel in the underground engineering site; estimate oxygen consumption rate information of all working areas inside the underground engineering site based on the personnel distribution data and the respiratory status data; Distributed detection is performed on the air environment in the underground engineering site to obtain oxygen content change data at several position points in the air environment; based on the three-dimensional spatial coordinates of all position points, the oxygen content change data at all positions are integrated and analyzed to estimate the oxygen component content change rate information at the underground engineering site.

3. The underground engineering safety monitoring method according to claim 1, characterized in that: In the step S2, based on the oxygen consumption characteristic information and the gas composition change characteristic information, it is determined whether an oxygen deficiency risk event occurs in the underground engineering site; Based on the occurrence attribute information of the hypoxia risk event, determining a target channel for ventilation operation of the underground engineering site includes: Compare the oxygen consumption rate information included in the oxygen consumption characteristic information with the oxygen content change rate information included in the gas composition change characteristic information to determine whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel; if so, determine that no hypoxia risk event has occurred in the underground engineering site; if not, determine that a hypoxia risk event has occurred in the underground engineering site; Based on the occurrence location information of the hypoxia risk event in the underground engineering site, a ventilation channel with the shortest air connectivity distance to the location where the hypoxia risk event occurs is determined as the target channel for ventilation operations at the underground engineering site.

4. The underground engineering safety monitoring method according to claim 1, characterized in that: In the step S3, the dynamic data of the geological structure during the ventilation operation of the target channel is obtained, and the deformation trend information of the geological structure of the underground engineering site is determined based on the dynamic data of the geological structure; Based on the geological structure deformation trend information, the geological safety hazard area in the underground engineering site is predicted, including: Performing dynamic displacement detection on the underground area adjacent to the target channel during the ventilation operation to obtain displacement amplitude change data and displacement direction change data of the underground area, which are used as geological structure dynamic data; performing spatiotemporal evolution analysis on the displacement amplitude change data and the displacement direction change data to determine the geological structure settlement velocity change information of the underground engineering site; Based on the geological structure settlement velocity change information, the geological structure settlement velocity difference of the underground area is identified, and sub-areas with uneven settlement velocity in the horizontal direction in the underground area are predicted, which are used as geological safety hazard areas in the underground engineering site.

5. The underground engineering safety monitoring method according to claim 1, characterized in that: In the step S4, based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site, the attribute information of safe evacuation of personnel in the underground engineering site is determined; Based on the personnel safety evacuation attribute information, a notification message is sent to the terminal held by the corresponding personnel in the underground engineering site, including: Compare the projection range position information of the geological safety hazard area corresponding to the underground engineering site with the personnel distribution information of the underground engineering site, determine the shortest evacuation path information for the personnel located in the projection range of the geological safety hazard area in the underground engineering site for safe evacuation, and use this as the personnel safety evacuation attribute information; The terminals held by the personnel located in the projection range of the geological safety hazard area in the underground engineering site are searched and located, so as to send a navigation notification message containing the shortest evacuation path information to the terminals held by the personnel.

6. Underground engineering safety monitoring system, characterized by: include: An underground oxygen consumption identification module, used to obtain personnel status data of an underground engineering site, and estimate oxygen consumption characteristic information of the underground engineering site based on the personnel status data; An underground air composition change identification module is used to obtain air environment change data in the underground engineering site, and estimate gas composition change characteristic information of the underground engineering site based on the air environment change data; A hypoxia risk event judgment module, used to judge whether a hypoxia risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information; A ventilation channel determination module, used to determine a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the hypoxia risk event; A geological structure deformation identification module is used to obtain geological structure dynamic data of the target channel during the ventilation operation process, and determine the geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data; A geological safety hazard area identification module is used to predict the geological safety hazard area in the underground engineering site based on the geological structure deformation trend information; A safety evacuation state determination module, used to determine the attribute information of safe evacuation of personnel in the underground engineering site based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site; The notification message sending module is used to send notification messages to terminals held by corresponding personnel in the underground engineering site based on the personnel safety evacuation attribute information.

7. The underground engineering safety monitoring system according to claim 6, characterized in that: The underground oxygen consumption identification module is used to obtain personnel status data of the underground engineering site, and based on the personnel status data, estimate oxygen consumption characteristic information of the underground engineering site, including: Perform visible light scanning and thermal infrared scanning inside the underground engineering site to obtain visible light images and thermal infrared images of personnel inside the underground engineering site; analyze the visible light images of the personnel to obtain personnel distribution data in the underground engineering site; analyze the thermal infrared images of the personnel to obtain respiratory status data of all personnel in the underground engineering site; estimate oxygen consumption rate information of all working areas inside the underground engineering site based on the personnel distribution data and the respiratory status data; The underground air composition change identification module is used to obtain air environment change data in the underground engineering site, and estimate gas composition change characteristic information of the underground engineering site based on the air environment change data, including: Distributed detection is performed on the air environment in the underground engineering site to obtain oxygen content change data at several position points in the air environment; based on the three-dimensional spatial coordinates of all position points, the oxygen content change data at all positions are integrated and analyzed to estimate the oxygen component content change rate information at the underground engineering site.

8. The underground engineering safety monitoring system according to claim 6, characterized in that: The hypoxia risk event judgment module is used to judge whether a hypoxia risk event occurs in the underground engineering site based on the oxygen consumption characteristic information and the gas composition change characteristic information, including: Compare the oxygen consumption rate information included in the oxygen consumption characteristic information with the oxygen content change rate information included in the gas composition change characteristic information to determine whether the increase in oxygen content in the underground engineering site is greater than or equal to the oxygen consumption of the personnel; if so, determine that no hypoxia risk event has occurred in the underground engineering site; if not, determine that a hypoxia risk event has occurred in the underground engineering site; The ventilation channel determination module is used to determine a target channel for ventilation operation of the underground engineering site based on the occurrence attribute information of the hypoxia risk event, including: Based on the occurrence location information of the hypoxia risk event in the underground engineering site, a ventilation channel with the shortest air connectivity distance to the location where the hypoxia risk event occurs is determined as the target channel for ventilation operations at the underground engineering site.

9. The underground engineering safety monitoring system according to claim 6, characterized in that: The geological structure deformation identification module is used to obtain the geological structure dynamic data of the target channel during the ventilation operation process, and determine the geological structure deformation trend information of the underground engineering site based on the geological structure dynamic data, including: Performing dynamic displacement detection on the underground area adjacent to the target channel during the ventilation operation to obtain displacement amplitude change data and displacement direction change data of the underground area, which are used as geological structure dynamic data; performing spatiotemporal evolution analysis on the displacement amplitude change data and the displacement direction change data to determine the geological structure settlement velocity change information of the underground engineering site; The geological safety hazard area identification module is used to predict the geological safety hazard area in the underground engineering site based on the geological structure deformation trend information, including: Based on the geological structure settlement velocity change information, the geological structure settlement velocity difference of the underground area is identified, and sub-areas with uneven settlement velocity in the horizontal direction in the underground area are predicted, which are used as geological safety hazard areas in the underground engineering site.

10. The underground engineering safety monitoring system according to claim 6, characterized in that: The safe evacuation state determination module is used to determine the attribute information of safe evacuation of personnel in the underground engineering site based on the location information of the geological safety hazard area in the underground engineering site and the personnel distribution information of the underground engineering site, including: Compare the projection range position information of the geological safety hazard area corresponding to the underground engineering site with the personnel distribution information of the underground engineering site, determine the shortest evacuation path information for the personnel located in the projection range of the geological safety hazard area in the underground engineering site for safe evacuation, and use this as the personnel safety evacuation attribute information; The notification message sending module is used to send a notification message to a terminal held by a corresponding person in the underground engineering site based on the personnel safety evacuation attribute information, including: The terminals held by the personnel located in the projection range of the geological safety hazard area in the underground engineering site are searched and located, so as to send a navigation notification message containing the shortest evacuation path information to the terminals held by the personnel.

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