136 results about "Soil gas" patented technology

The invention discloses a dynamic monitoring method, system and device for soil carbon loss and a storage medium, and relates to the technical field of environment monitoring, and the method comprises the steps: obtaining soil parameters through a multi-mode sensing array and a runoff monitoring device which are arranged in a target soil area, the soil parameters comprise a soil gaseous parameter, conductivity, a soil solid parameter and a liquid carbon parameter; calculating a carbon loss amount generated by soil respiration according to the soil gas state parameter, and taking the carbon loss amount as a respiration carbon flux; according to the conductivity, the soil solid parameters and a preset soil organic carbon content relation model, calculating the carbon loss amount of soil erosion migration as erosion carbon flux; calculating the carbon loss amount of soil leaching loss according to the liquid carbon parameters, and taking the carbon loss amount as leaching carbon flux; and performing weighted summation on the respiration carbon flux, the erosion carbon flux and the leaching carbon flux to obtain the total carbon loss of the soil in the target area. A more comprehensive carbon income and expenditure evaluation method is provided by establishing a soil total carbon loss calculation framework covering'gas-solid-liquid 'three phases.

The invention relates to a dynamic detection method, system, equipment and medium for a blind gold mine in a coverage area, and belongs to the technical field of mineral resource exploration, the method comprises the following steps: collecting historical geochemical exploration data and geographic coordinate data of a target coverage area, and screening a target test profile based on drilling mine finding position and coverage layer thickness information; collecting soil shallow gas data on the test section and performing anomaly analysis to generate a gas anomaly space coordinate set; taking an area marked by the gas anomaly space coordinate set as a preset sampling point, acquiring soil sample attribute data of the preset sampling point, inputting the soil sample attribute data into a pre-configured granularity-element correlation model, and outputting a coverage type judgment label; and calling a corresponding geochemical method combination from a preset method library, generating an execution instruction list, carrying out element abnormal data acquisition and spatial overlay analysis on the target coverage area, and generating an ore body prediction probability distribution diagram and a drill hole layout coordinate list. The accuracy of ore body positioning can be improved.

The invention relates to the technical field of orchard planting, in particular to an orchard intelligent gas explosion deep scarification fertilizer applicator which comprises a supporting table used for supporting a device body, a protective frame is mounted at the top of the supporting table, and a gas pressure controller used for soil gas explosion deep scarification and an automatic driving control controller are mounted in the protective frame. By arranging the fertilizing mechanism, the device can sow seeds while loosening soil through gas explosion, the gas pressure of a gas storage tank is controlled through a gas pressure controller, when the seeds move into a through pipe from a feeding pipe, the seeds slide directionally due to the arrangement of a wedge-shaped surface, and the position of a gas outlet plate is adjusted through an electric push rod; the multiple sealing blocks form a closed space for the partition plate area, the multiple limiting blocks divide the seeds in the multiple through pipes in a limited mode, and the multiple air outlets correspond to the multiple feeding holes, so that air impact acting force is released to the seeds, the seeds can be released through the discharging holes, and meanwhile the loosening effect can be generated on internal soil.

The utility model relates to the technical field of grassland soil gas collection, in particular to a soil profile gas collection device which comprises a supporting cylinder, four groups of partition plates arranged from top to bottom are fixedly installed in the supporting cylinder, each partition plate is composed of a first plate body and a second plate body, each second plate body is provided with an L-shaped vent hole communicated with the outside, and the opening of each vent hole faces upwards. The supporting cylinder is divided into four cavities through four sets of partition plates, four organic glass tubes extending into the four cavities respectively are fixedly installed on the supporting cylinder, a three-way valve is fixedly installed at the top of each organic glass tube, and a gas suction cylinder used for extracting gas is arranged on each three-way valve. According to the utility model, the four chambers are uniformly arranged in the supporting cylinder, so that gases with different depths can enter the corresponding chambers. And a pressure applying plate is arranged on the supporting cylinder, so that the supporting cylinder can stably move downwards into the soil.

The invention relates to the technical field of spaceflight sealing, in particular to a multi-mode pressure sealing device and method for heating and extracting extraterrestrial star soil gas. The device comprises a transposition sealing disc, a positioning base disc and a distributed driving actuator, a flow guide funnel is arranged on the outer side of the transposition sealing disc, and a sample receiving station and a sealing station are arranged on the inner side of the transposition sealing disc; an interface cylinder is arranged on the outer side of the positioning base disc, and a sample receiving station hole is formed in the inner side of the positioning base disc; the distributed driving actuator is connected with the transposition sealing disc and the positioning base disc and used for driving the transposition sealing disc to conduct axial rising, station switching and axial sealing relative to the positioning base disc in a time-sharing mode. The problem of dynamic sealing failure under the extreme temperature difference and high particle invasion environment can be effectively solved, zero-leakage collection of star soil heating gas is achieved, the reliability and operation efficiency of gas sample collection in a deep space exploration task are remarkably improved, and mechanical interference or positioning deviation caused by compound motion of a traditional linkage mechanism is also avoided.

The invention provides a rapid in-situ monitoring system for VOCs pollution in underground water and soil gas of a polluted site, and belongs to the technical field of environment monitoring. Comprising a first collection module for collecting VOCs samples in underground water, a second collection module for collecting VOCs samples in soil gas, a collection module connected with the first collection module and the second collection module, an analysis monitoring module connected with the collection module, and a central processing module. VOCs samples in underground water are collected through the first collection module, VOCs samples in soil gas are collected through the second collection module, the collected VOCs samples are collected and stored through the collection module, the concentration and components of the VOCs samples in the collection module are monitored through the analysis monitoring module, and the whole system is arranged near a polluted site. And rapid in-situ monitoring of VOCs pollution in underground water and soil gas of a polluted site can be realized.

The invention relates to the technical field of gas sampling, in particular to an underway gas sampling system for soil gas collection, comprising: a gas collection container comprising any one or more of a first container, a second container and a third container, the first container comprising a steel cylinder for storing a gas sample with a first pressure, the second container comprising a gas sample with a second pressure, and the third container comprising a gas sample with a second pressure; the first container comprises a first pressure and a second pressure, the second container comprises a flexible air bag, the flexible air bag is used for storing a gas sample with a second pressure, the second pressure is smaller than the first pressure, the third container comprises an air exhaust pipeline, and the air exhaust pipeline and a soil layer to be sampled form a soil sample collection container. According to the underway gas collection system for soil gas collection, sampling can be carried out in three gas collection modes of the gas cylinder, the flexible gas bag and the gas extraction pipeline, the underway gas collection system can adapt to different sampling points, gas samples collected at the sampling points are detected on site at the same time according to the same standard, and gas sample components of the current sampling point can be reduced more effectively.

The invention discloses a multi-parameter shallow gas detection method which comprises the following steps: S1, self-adaptive sensing network layout and multi-parameter synchronous acquisition: monitoring nodes synchronously acquire underground electrical parameters, soil gas composition and concentration, soil mechanics and pore pressure parameters and an environmental noise background value; accessing a hydro-meteorological data stream of the target area in real time; s2, multi-source interference signal identification and data purification: obtaining a purified multi-parameter data sequence reflecting real geological anomalies; s3, water-gas-force coupling dynamic modeling and migration simulation: outputting a shallow gas migration risk thermodynamic diagram; s4, intelligent diagnosis based on transfer learning and causal discovery: performing time sequence analysis on the purified multi-parameter data sequence, and identifying a gas reservoir core area, a dominant migration channel and dominant control factors influencing gas aggregation and migration; and S5, dynamic risk assessment and graded early warning: quantitatively calculating the risk probability.

The invention discloses a method for determining extension distance and burial depth of a sulfide ore body in a coverage area based on deep penetration soil gas, which comprises the following steps of: acquiring existing drilling data, determining a surface position A of the sulfide ore body, and acquiring an included angle beta between the extension direction of the sulfide ore body and a vertical drill rod and an inclination direction; soil gas geochemical measurement is conducted in the horizontal projection direction of the ground in the extending direction of the sulfide ore body, and the content of SO2, H2S and CO2 above the sulfide ore body is obtained; after contrast processing is conducted on the content of each gas, gas anomaly profile maps are compiled respectively, and vertical earth surface positions B and C corresponding to the two ends of abnormal extension of the profile maps are divided according to the gas anomaly profile maps; according to the positions A, B and C and the included angle beta, a comprehensive profile map is drawn, and the extension length and the buried depth of the two ends of the sulfide wide body are calculated. According to the method, the sulfide ore body is accurately positioned by measuring the gas abnormal coverage area.

The invention relates to the technical field of soil and groundwater pollution remediation, in particular to a polluted groundwater source controlling and breaking system suitable for limited space of an industrial accumulation area, which comprises a main well, a gas stripping circulating unit and a groundwater circulating unit. A blocking device composed of a packing rubber structure and a driving device is arranged in the main well, the packing rubber structure is driven by the driving device to move and intermittently inject air to expand, and an air flow channel which is dynamically opened and closed is formed between the inner wall of the main well and the unsaturated area. The vacuum pump device builds negative pressure on the upper portion of the main well, so that purified clean gas enters an unsaturated area in an intermittent pulse mode through the peripheral injection well, and soil gas is induced to flow in an oscillating mode under cooperation of the dynamic gas flow channel. Groundwater extracted by the centrifugal pump is purified by the gas stripping area and the underground activated carbon filtering device and then is discharged into the top of the unsaturated area through the drainage device in an intermittent wave mode, the system is suitable for pollution treatment in the limited space of the industrial accumulation area, and targeted source control and long-acting reduction are achieved.

A backwater valve cover configured to prevent a backwater valve opening from releasing toxic soil gases into a home includes a base and a lid. The base is configured to be installed above a backwater valve. The base includes a central access opening, a first plurality of fastener holes configured to accept a first plurality of fasteners, and a second plurality of fastener holes configured to accept a second plurality of fasteners. The lid is configured to cover the central access opening and be fastened to the base via the second plurality of fasteners.

The invention relates to the field of environment monitoring, in particular to a carbon leakage earth surface monitoring method for a carbon dioxide flooding storage engineering field, which comprises the following steps: S1, acquiring the distribution of injection production wells in a to-be-detected area, and selecting different point positions for monitoring; s2, estimating the diffusion rate of soil CO2 gas into free air, calculating soil gas flux data, and collecting soil moisture and temperature data; s3, the carbon dioxide flux of the corresponding area is obtained, and the surface concentration of carbon dioxide at different point positions is obtained through an infrared gas analyzer; s4, determining whether carbon dioxide leakage exists in the region or not according to the surface concentrations of the carbon dioxide at the different point locations; wherein the method for selecting different point locations in the step 1 is to select 2-4 point locations with the longest accumulated injection time in an engineering field for detection, and the linear relation between the selected point locations and the injection time is Y (t) = 0.08 t + 0.5. According to the monitoring method, earth surface sampling monitoring is selected, large-range encryption point distribution is achieved, cost is low, the geological structure cannot be damaged, cost is reduced, and safety is improved.

The invention relates to the technical field of mineral exploration, gas flux, ecological environment protection and monitoring and the like, in particular to a soil gas sample trapping device which comprises a fixing seat, two supports are symmetrically and fixedly connected to the two sides of the surface of the fixing seat, a motor is fixedly connected between the two supports, and the motor is connected with the fixing seat. A rotating shaft is fixedly connected to the bottom surface of the motor, a rotating plate is rotatably connected to the center of the interior of the fixing base and fixedly connected with the rotating shaft, a fixing sleeve is fixedly connected to the periphery of the rotating shaft, a piston cylinder is fixedly connected to the bottom surface of the fixing sleeve, and a columnar cylinder is fixedly connected to the bottom surface of the piston cylinder; the flow direction of gas can be effectively controlled by forming a gas inlet passage and a gas outlet passage in the device, the collection efficiency of soil gas is improved, it is ensured that the gas is effectively collected into the device, the collection accuracy and reliability are improved, meanwhile, the continuity and reliability in the gas collection process are ensured through a dredging structure, and the collection efficiency is improved. And errors or uncertainty caused by unsmooth flow can be reduced.

Provided herein are devices and systems that can be used to measure subsurface gas concentrations in order to inform users about the soil health. Also provided herein are methods of using these devices and systems to measure the subsurface concentration of one or more gases present in the soil.

The application relates to the technical field of soil gas collection, and particularly discloses an in-situ soil profile gas collection device which comprises an inner pipe, a pipe body and a strip-shaped belt. The pipe body comprises an exposed end and an inserted end, the inner pipe is located in the inner cavity of the pipe body, one end of the inner pipe is detachably connected with the inner wall of the pipe body close to the inserted end, the inner wall of the inner pipe is connected with one end of a supporting rod, the outer circumferential side of the strip-shaped belt is equidistantly provided with not less than three elastic rings, the inner diameter of the strip-shaped belt is larger than the outer diameter of the inner pipe, the strip-shaped belt is sleeved on the inner pipe, each elastic ring is clamped on the outer circumferential side of the inner pipe, and the pipe body is provided with a pulling assembly for driving one end of the strip-shaped belt to move. The technical scheme of the example of the application realizes in-situ collection of soil profile nitrous oxide gas, is suitable for long-time measurement of nitrous oxide, and has smaller interference with the surface microclimate.

The present invention discloses a pore pressure response model test system for gas-containing silt sediment and an operation method, which is composed of a gas release unit, a saturation unit and a control module unit. The gas release unit includes a top plate and a bottom plate, a cylindrical protective shell is fixedly connected between the outer sides of the top plate and the bottom plate, two baffles are fixedly connected inside the protective shell, and seabed sediments are arranged between the two baffles. A fixed cylinder is fixedly connected to the central side wall of each baffle, and each fixed cylinder passes through the side walls of the top plate and the bottom plate respectively. The present invention is established through a gas release unit, a saturation unit and a control module unit, and then the influence of seawater depth on slope stability in slope damage caused by gas diffusion of gas-containing silt is studied respectively under the assumption that the gas diffusion amount of gas-containing silt is the same, so as to provide a certain basis for the study of seabed gas-containing sediments, and the practicability is high.

The invention relates to the technical field of data monitoring, in particular to a soil gas online monitoring method and system for a municipal road construction site, and the method comprises the steps: obtaining a feature vector through analyzing the correlation between soil gas concentration data at any depth in each time period at all collection moments and various meteorological data, evaluating the similarity of the feature vectors between any depth and all other depths, and determining a similarity coefficient so as to screen out a feature time period; and determining a depth characteristic value by analyzing time and space distribution characteristics of the soil gas concentration so as to screen out a noisy moment, and correcting the soil gas concentration data at the noisy moment. According to the method, the soil gas concentration data influenced by noise is corrected by combining the distribution characteristics of the soil gas concentration, so that the precision and accuracy of multi-depth soil gas monitoring of the highway construction site are improved.

The utility model discloses soil gas collecting and detecting equipment which comprises a collecting cylinder, the bottom end of the collecting cylinder is connected with a soil breaking cone, the top end of the collecting cylinder is connected with one end of a gas conveying pipe, the other end of the gas conveying pipe is connected with a pump suction type gas detector, the soil breaking cone comprises a cone body, a cavity is formed in the cone body, and the pump suction type gas detector is arranged in the cavity. A plurality of air inlet holes which are annularly and uniformly distributed are formed in the outer wall of the periphery of the cone in a penetrating mode, a plug is slidably connected into each air inlet hole, each plug is connected with an adjusting mechanism, and in the process that the soil breaking cone is inserted into soil, the plugs are located in the air inlet holes; the air inlet hole cannot be blocked by external soil in the insertion process, so that the soil gas collection efficiency cannot be influenced, the situation that the collection barrel and the soil breaking cone need to be detached and separated to clean the air inlet hole every time gas collection and detection are completed can be avoided, and the use convenience is relatively improved.

The application discloses an automatic gas geochemical exploration equipment and an automatic measurement method, wherein the equipment comprises a double-gas-path drill bit, an exploration mechanism and a microcontroller; the double-gas-path drill bit comprises independent gas inlet and outlet gas paths; the exploration mechanism comprises a first exploration channel, a second exploration channel and a microcontroller; the first exploration channel is provided with an electrically-controlled gas valve connected with the microcontroller; the second exploration channel comprises a sensor container and a gas pump; the sensor container is provided with a plurality of parallel sensors connected with the microcontroller; one end of the sensor container is communicated with the outlet gas path, and the other end of the sensor container is connected with the gas pump; the gas pump is connected with the microcontroller and an external gas collecting device; and the microcontroller is wirelessly connected with an external intelligent terminal. The application can realize automatic exploration and automatic recording of soil gas, improve the exploration work efficiency and reduce the influence of personnel operation errors on exploration data results.

The utility model provides a soil VOC (volatile organic compound) monitoring and sampling system, which belongs to the technical field of VOC monitoring and sampling, and comprises a sampling module, an adsorption module, a conveying module and a control module, the adsorption module is provided with a temperature control assembly for cooling and heating the soil gas; the conveying module is communicated between the sampling module and the control module and is provided with a first channel and a second channel, and only the second channel is communicated with the temperature control assembly; when the to-be-detected parameter of the soil gas is higher than a preset value, the control module closes the second channel, and at the moment, the soil gas enters the control module through the first channel; when the to-be-detected parameter of the soil gas is lower than or equal to a preset value, the control module closes the first channel, and at the moment, the soil gas enters the control module through the second channel. According to the utility model, the accuracy of the monitoring result is improved when the VOC concentration in the soil gas is low.

The invention discloses a tectonic geochemical earthquake precursor anomaly discrimination index extraction method and device, and the method comprises the steps: obtaining monitoring data of a monitored target fault zone, carrying out the analysis of the monitoring data based on a tectonic geochemical method, determining the cross-fault soil gas spatio-temporal evolution characteristic data of the monitored target fault zone, and carrying out the analysis of the cross-fault soil gas spatio-temporal evolution characteristic data of the monitored target fault zone. And according to the monitored cross-fault soil gas spatio-temporal evolution characteristic data of the target fault zone and the response change relationship of the cross-fault soil gas concentration intensity of the fault zone to the earthquake, extracting an earthquake precursor anomaly discrimination index. Monitoring data of a target fault zone are analyzed based on a tectonic geochemical method, and then the fault zone is analyzed according to the analyzed cross-fault soil gas spatio-temporal evolution data and the response change relation of the cross-fault soil gas concentration intensity of the fault zone to an earthquake, which is obtained through a solid body earthquake-inducing mode. According to the invention, data quantification of the earthquake precursor anomaly discrimination index can be realized, the problem that only the earthquake precursor anomaly index can be qualitatively researched at present is solved, and the accuracy of earthquake prediction is improved.

This invention relates to the field of soil environmental monitoring technology, and in particular discloses a sampling device for simultaneously collecting in-situ soil solutions and gases. The device comprises a support frame unit, a sampling device installed within the support frame unit, a drive device installed on the support frame unit, and a controller for controlling the drive device and the sampling device. The sampling device includes an aperture opener for drilling, a collector for simultaneously collecting soil solutions and gases from the drilled hole, and a gas-liquid separation unit for separating the collected solutions and gases. This device is a complete sampling system that not only reduces equipment costs and improves sampling efficiency, but also ensures the correlation and accuracy of synchronous, in-situ sampling data. By simultaneously, in-situ, and isolatedly collecting soil solutions and soil gases from the same borehole and at the same depth, it avoids cross-contamination and atmospheric interference, significantly improving sampling efficiency and data comparability, and providing a reliable technical means for research on multi-media soil environments.

The invention relates to the technical field of pollutant detection, in particular to a movable while-drilling soil gas detection system and a wide concentration range detection method.The movable while-drilling soil gas detection system comprises a movable platform, a detection device and a control device, and the movable platform comprises a loading platform and driving wheels connected to the loading platform; and the drilling part is carried on the loading platform. An inert gas compensation mechanism is introduced, the proportion of inert gas of the sample introduction system is dynamically adjusted, the flow of a high-concentration sample is diluted, and the concentration of pollutants at an inlet of the detection module is reduced through the gas dilution module arranged in the sample introduction module, so that the effective detection range of the detection module is expanded, and a low-detection-limit detector can be selected; on the premise of not losing the sensitivity of a low-concentration sample, high-concentration signal overload is inhibited, continuous detection of pollutants in a wide concentration range is realized, both trace identification and high-concentration anti-saturation capability are considered, and the analysis applicability of a complex polluted site is remarkably improved.

The invention relates to the technical field of soil environment monitoring, and particularly discloses a sampling device for synchronously collecting solution and gas in in-situ soil, which is provided with a support frame unit, a sampling device arranged in the support frame unit, a driving device arranged on the support frame unit and a controller for controlling and connecting the driving device and the sampling device. The sampling device comprises a tapper used for tapping, a collector used for simultaneously collecting a soil solution and gas from the tapped hole and a gas-liquid separation unit used for separating the collected solution and gas, and the device is a set of sampling system, so that the equipment cost is reduced, the sampling efficiency is improved, and the sampling time is shortened. The relevance and accuracy of synchronous and in-situ sampling data are ensured; through synchronous, in-situ and isolated collection of the soil solution and the soil gas in the same drill hole and the same depth, cross contamination and atmospheric interference are avoided, the sampling efficiency and the data comparability are remarkably improved, and a reliable technical means is provided for soil multi-medium environment research.

The invention discloses automatic gas geochemical exploration equipment and an automatic measurement method, and the equipment comprises a double-gas-path drill bit which internally comprises a gas inlet path and a gas outlet path which are independent and penetrate through the whole drill bit; the exploration mechanism comprises a first exploration passage, a second exploration passage and a microcontroller; an electric control air valve connected with the microcontroller is arranged on the first surveying passage; the second surveying channel comprises a sensor container and an air pump, a plurality of sensors which are connected in parallel and connected with the microcontroller are arranged in the sensor container, one end of the sensor container is communicated with the air outlet channel, the other end of the sensor container is connected with the air pump, the air pump is connected with the microcontroller, and the air pump is further connected with an external air collecting device; and the microcontroller is wirelessly connected with an external intelligent terminal. According to the invention, automatic exploration and automatic recording of soil gas can be realized, the exploration work efficiency is improved, and the influence of personnel operation errors on exploration data results is reduced.

The utility model belongs to the technical field of soil gas collection and detection, and discloses a gas collection device for rapid detection of volatile organic compounds in soil, the gas collection device comprises a collection pipe, and further comprises a collection mechanism arranged on the collection pipe and used for collecting volatile gas in the soil, the collection mechanism comprises a collection rod slidably connected in the collection pipe, and the collection rod is arranged on the collection pipe. The end, located in the collecting pipe, of the collecting rod is fixedly connected with a collecting plate, and the other end of the collecting rod is fixedly connected with a pulling plate. According to the gas collecting device for rapidly detecting the volatile organic compounds in the soil, through the arrangement of the collecting mechanism, a U-shaped vent hole of a volatile gas inlet channel is moved out of the collecting pipe, the initial state of the U-shaped vent hole is located in the collecting pipe, and under the blocking action of an extrusion plate, external gas is prevented from entering the collecting pipe, so that the volatile organic compounds in the volatile gas inlet channel are rapidly detected. Therefore, external air is prevented from being mixed in.

A gaseous substance collection system that can be used on extraterrestrial celestial bodies is envisaged for collecting target gaseous atoms and molecules that float in a shielded environment at a pressure equal to or less than 1 * 10-5 bar. The shielded environment is defined within a cover placed on top of the granular soil, and in one embodiment, the granular soil is a weathered layer. The cover includes a cover body extending from an edge to a top of the cover. The shielding environment is not communicated with the external environment through the cover body. The mining device further comprises a blade, a heat source and a gas collecting face. A blade extends from the edge and is configured to penetrate particulate soil. A heat source disposed in the cover is configured to heat particulate soil. The gas collection face is disposed in the shielded environment and is configured to maintain a temperature below 100 DEG Kelvin.

The utility model discloses a protective device for a soil gas collecting well. The protective device comprises a soil gas collecting well body and a well lid. According to the soil gas collecting well, the fixing block, the fixing frame and the lifting mechanism are arranged, so that the fixing frame and the soil gas collecting well body are fixedly installed, then the fixing frame and the fixing block are movably installed through the shaft pin, and then the other end of the fixing block and the well lid are fixedly installed; and when an operator needs to open the well lid, the pull-up mechanism drives the well lid to turn over through the fixing block and the fixing frame, so that the convenience of opening the well lid by the operator is improved, and the problem that when the operator needs to enter the collection well, the well lid cannot be turned over is solved. The problems that a well lid is fastened through bolts, so that an operator needs to open the well lid with the help of a tool, threads are prone to being damaged after the bolts are screwed for multiple times, then thread slipping is caused, the working efficiency is reduced, and certain limitation exists are solved.

The present invention relates to an in-situ monitoring device and method for VOC gases in soil, and relates to the technical field of treatment of soil and groundwater polluted by volatile organic compounds. The in-situ monitoring rod group includes a monitoring rod and a probe connected in sequence from top to bottom. The side wall of the monitoring rod has monitoring holes, and the side wall of the probe has air extraction holes; the monitoring holes are communicated with a monitoring pipeline, and an extraction influence range monitoring component is provided on the monitoring pipeline. The air extraction holes, a gas detection device and an air pump are sequentially communicated through an air extraction pipeline, and the outlet of the air pump is respectively communicated with an exhaust gas pipeline and a gas collection device; the control module is respectively in communication connection with the extraction influence range monitoring component, the gas detection device and the air pump. The purpose of the present invention is to conduct in-situ continuous monitoring of VOCs gases in soil, and at the same time, soil gas samples can be collected, and the gas collection device can also be connected to an external detection device to quantitatively measure the components in the soil gas. Through working condition conversion, the gas permeability test of soil layers can be carried out.

The invention discloses a soil ecological environment gas detection system, and relates to the field of gas detection. The system comprises a gas collecting unit, a gas collecting cavity, an optical signal transmitting unit, an optical signal receiving unit, a gas pressure sensor and a control processing unit, the gas collection unit is used for collecting soil gas in target soil, and the soil gas comprises greenhouse effect gas; the gas collection cavity is used for accommodating soil gas; the optical signal transmitting unit is positioned at one end of the gas collecting cavity; the optical signal receiving unit is positioned at the other end of the gas collection cavity and is used for generating a photoelectric sensing signal; the air pressure sensor is arranged in the air collection cavity; and the control processing unit is used for determining the greenhouse effect gas concentration of the soil gas according to the photoelectric sensing signal, and performing compensation treatment according to the cavity gas pressure to obtain the greenhouse effect gas detection concentration. The soil ecological environment monitoring system has the real-time data processing capability, so that the detection result can be fed back quickly, and timely and accurate information is provided for monitoring and management of the soil ecological environment.