Chinese Academy of Sciences

Institute of Rock and Soil Mechanics, Cas

Ewatt Technology Co., Ltd.

Yong Wan

Qiang Xue

Jiangshan Li

Lei Liu

Zhixiang Chen

Xiaolong Ma

Hang Ruan

Houzhen Wei

Xiang Sun

Yijun Chen

Mingli Wei

Yuan Wx Li

Xin Chen

Bing Li

Yuan Li

Kai Zhang

Guocheng Zhao

Linbo Qin

The present disclosure relates to the field of rock soil detection and in particular to a multi-probe nuclear magnetic resonance (NMR) rock soil in-situ monitoring system, which includes a multi-probe component, a spectrograph component, an industrial control computer and a power cable. The multi-probe component includes a shell and multiple nuclear magnetic probes disposed inside the shell. The multiple nuclear magnetic probes are respectively located at the soil layers of different depths and have different measurement frequencies. The spectrograph component is used to transmit and receive NMR-measured radio frequency signals, the industrial control computer is used to transmit a measurement instruction and perform real-time processing on the measurement data, and the power cable is connected with the multiple nuclear magnetic probes, the spectrograph component and the industrial control computer to supply power and transmit the measurement data.

Multi-probe multi-frequency nuclear magnetic resonance rock soil in-situ monitoring system

The present disclosure relates to a static cone penetration test device. The device includes a housing, an optical window and a friction cylinder coaxially connected. Light sources are mounted in the optical window and a static cone penetration assembly is disposed in the friction cylinder to detect a resistance the device suffers when the device is pressed into soil. An optical fiber sensor, a wireless transceiver, a data processing chip and a power supply are disposed in the housing. The optical fiber sensor is used to receive the reflected light of a target object and output spatial position information and spectrum information. The wireless transceiver is used to upload test data and receive a control signal. The data processing chip is used to analyze the test data. The present disclosure has the advantages of compact structure, high spectral resolution, quick imaging speed, and strong immunity to interference.

Static cone penetration test device and test method incorporating hyperspectral imaging technology

A multiphase flow cylindrical model test system includes a loading structure, a multiphase flow displacement model bucket, a data acquisition and analysis system, a flexible seepage model bucket and a dynamic control system. A multi-parameter test method in the displacement process of pollutants in three-dimensional multi-field and multiphase media is reasonably configured based on the sequential and superimposed application requirements of heat and steam in the thermal enhanced soil vapor extraction process. The disclosure has the following effects: it can conduct array-type measurement of deformation of specimen during the thermal enhanced soil vapor extraction process, measure the temperature field, conductivity field, moisture field, matrix suction distribution, soil pressure distribution, pore water pressure distribution and pollutant discharge rate of the specimen during the test, and realize the flexible wall permeability triaxial test with bidirectional control of the water head and overcome the influence of the polluted liquid on the test equipment.

Multiphase flow cylindrical model test system and test method

A flexible gastight material for a landfill site includes a component A and a component B, the component A including: at least one of polypropylene glycol with a molecular weight of 600-4000, polytetrahydrofuran diol with a molecular weight of 1000-3000, polycaprolactone diol with a molecular weight of 1000-3000, and polycarbonate diol with a molecular weight of 1000-3000; and at least one of 2,4'-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate. The flexible gastight material for the landfill site provided in the present application has a micro-closed-cell foam structure. The closed-cell elastic structure of the flexible gastight material may block the volatilization of toxic and harmful odors, and may cut off the diffusion path of the odors by combining with gas treatment systems at the landfill site. The flexible gastight material has excellent water blocking and gas sealing performance.

Flexible gastight material for landfill site, and preparation method and use method thereof

An in-situ vapor injection thermal desorption device includes a sectional combined input head, several intermediate connectors and a bottom protector connected in series from top to bottom. The in-situ vapor injection thermal desorption device further includes several water-vapor coupling injection activation chips, selectively disposed below any of the intermediate connectors; the sectional combined input head is provided with a high-pressure-gas inlet, several pairs of heat-transfer-oil inlets and heat-transfer-oil outlets, and several pairs of hot-water inlets and hot-water outlets; the water-vapor coupling injection activation chip is provided with several gas-liquid spraying holes. The disclosure is an assembling structure; the number of the water-vapor coupling injection activation chips can be increased or reduced according to remediation depth on an actual site; it can be repeatedly used, uniformly sprayed, and enables the vapor for treating the organic soil to be generated in situ and remediating organic pollution sites in a low-carbon, energy-saving way.

In-situ vapor injection thermal desorption device

The invention discloses a preparation method and application of in-situ high-efficiency degradation carbon based material of VOCs in landfill based on waste regeneration, which comprises the following steps: air drying the agricultural and forestry wastes to a moisture content of 0.001 wt %&#x2dc;20 wt %, and the agricultural and forestry wastes mainly include: straw, wheat straw, leaves, branches, weeds, crushing them to a particle size of 0-50 mm with a grinder, and then using urea or amide as modifier The nitrogen enriched biochar was prepared by mixing the crushed agricultural and forestry wastes with a mass ratio of 1:50-1:10; the nitrogen enriched biochar was prepared by retorting the nitrogen doped agricultural and forestry wastes at 300-600&#xb0; C. for 20-60 min, and then cooling them rapidly; the nitrogen enriched biochar was mixed with the sewage sludge with a moisture content of 90-98 wt. % with a weight ratio of 20:1-10:1 to get the nitrogen enriched microorganism The degradation efficiency of TVOCs in landfill is 96.74%&#x2dc;99.70%.

Preparation and application of in-situ high efficient degradation carbon based materials of VOCs in landfill based on waste recycling

The present invention discloses a shooting device and an unmanned aerial vehicle. The shooting device includes: a first reflector; a second reflector arranged to be opposite to a reflecting surface of the first reflector; a bracket, wherein the bracket includes: a connecting plate, a first rotating seat, which is fixedly connected with one end of the connecting plate in a rotatable manner and is used for clamping the first reflector, and a second rotating seat, which is fixedly connected with the other end of the connecting plate in the rotatable manner and is used for clamping the second reflector; driving parts, including a first driving part and a second driving part used for respectively driving the first rotating seat and the second rotating seat to rotate; and a camera arranged to be opposite to the reflecting surface of the second reflector. The technical problems of inconvenient control, low response speed, high requirements on lens and high cost of the shooting device for the unmanned aerial vehicle in the prior art are solved.

Shooting device and unmanned aerial vehicle

Growing community of inventors

Wuhan, China

Yong Wan