Abstract: The present invention discloses a device and method for collecting heat bags and solidifying and filling calcareous sand foundation, belonging to the field of civil engineering geological treatment technology. The solar heat collection bag comprises a transparent and permeable part and an insulation material, wherein the insulation material comprises a heat absorbing layer, an insulation layer, and a fabric layer. The heat absorbing layer, insulation layer, and fabric layer are fixedly combined from top to bottom to form an integrated transparent and permeable part. The edge of the transparent and permeable part is the first edge, and the edge of the insulation material is the second edge; The transparent heat permeable part and insulation material are combined into one through the first and second edges, forming a containment space between the transparent heat permeable part and the insulation material, so that the medium contained in the containment space can be heated by solar energy.

Abstract: The disclosure relates to a multi-probe NMR rock soil in-situ monitoring method, which includes: placing a multi-probe component to a target layer in a soil drill hole, where the multi-probe component includes NMR probes respectively located at the soils at different depths and having different measurement frequencies; performing in-situ NMR measurement on soils at different depths at the same time; by using a spectrometer component, receiving measurement signals from all NMR probes and performing frequency mapping analysis to distinguish NMR raw measurement data collected by each NMR probe; by using the spectrometer component, transmitting the raw measurement data to an industrial control computer to perform an inversion processing on the measurement data of the NMR probes and obtain T2 distribution mapping of the soils at different positions; based on the T2 distribution mapping, obtaining a water ratio of soil, a soil-water characteristics curve, soil non-homogeneity information and oil pollutant informati

Abstract: The present invention provides a testing device and method for interface mechanical parameters of natural gas hydrated soil. The interface mechanical parameter testing device for natural gas hydrated soil includes a reaction kettle, a rotating power mechanism, a sample loading mechanism, a pressure mechanism, an atmosphere regulating mechanism, and a temperature regulating mechanism. The testing method for interface mechanical parameters of hydrated soil containing natural gas is implemented based on this device. It can improve the accuracy and reliability of mechanical parameters at the interface of hydrated soil containing natural gas.

Abstract: The invention provides a self drilling side pressure simulation test device and method for a formation containing natural gas hydrate, belonging to the technical field of geotechnical mechanics. The device comprises a reactor, a cutting tool, a mud conveying mechanism and a side pressure testing device. The reactor is used to fill the simulated substance of the formation containing natural gas hydrate to be tested. The cutting tool is arranged in the reactor, and the cutting tool can move up and down relative to the reactor. One end of the mud conveying mechanism is connected with the reactor, for outputting the mud cut by the cutting tool from the reactor; The side pressure test device can complete the side pressure test experiment with the cutting tool moving to the set depth. The method is implemented based on the device. The in-situ test method can directly test the engineering mechanical parameters of the formation containing natural gas hydrate.

Abstract: The invention provides a self drilling side pressure simulation test device and method for a formation containing natural gas hydrate, belonging to the technical field of geotechnical mechanics. The device comprises a reactor, a cutting tool, a mud conveying mechanism and a side pressure testing device. The reactor is used to fill the simulated substance of the formation containing natural gas hydrate to be tested. The cutting tool is arranged in the reactor, and the cutting tool can move up and down relative to the reactor. One end of the mud conveying mechanism is connected with the reactor, for outputting the mud cut by the cutting tool from the reactor; The side pressure test device can complete the side pressure test experiment with the cutting tool moving to the set depth. The method is implemented based on the device. The in-situ test method can directly test the engineering mechanical parameters of the formation containing natural gas hydrate.