10 results about "Lava" patented technology

There are 111 active volcanoes in Japan, and as many as 50 of them are in a 24-hour monitoring system for disaster prevention. To solve the problem that there are few observation records of eruption of a volcano, it is still difficult to predict the eruption, only software countermeasures are basically examined, and hardware countermeasures are not sufficiently examined. It is considered that some hardware measures, if not perfect, should be taken in order to realize the SDGs11 "Keep living". The present invention is one of the hardware measures, and in particular, when a lava flows erupted due to a volcanic eruption or the like may threaten human life, a house, or a colony, an explosive technology that functions quickly and effectively is applied. To provide a gas generating agent composition and a method for controlling the lava flows of the gas generating agent composition, capable of timely and directly controlling the lava flows by suppressing the flow velocity and changing the flow direction.SOLUTION: The present invention relates to a gas generating composition and a method for controlling the lava flows thereof, the gas generating composition having the functions of reducing the flow velocity and controlling the flow direction by the force of a large amount of gas generated by receiving the heat energy of an lava flows, cooling the lava flows tip by the contact of the generated gas or ejected matter with the lava flows tip, and controlling the lava flows by the contact, melting, and chemical reactions of the generated ejected matter or generated residue on the electrode tip.SELECTED DRAWING: None

The invention discloses a heat storage lava solid particulate matter with good thermal stability and a preparation method thereof, and belongs to the technical field of energy storage materials, the heat storage lava solid particulate matter comprises 68%-73% of SiO2, 2.5%-3.5% of SiC, 11%-14% of Al2O3, 4%-6% of MgO, 2%-3% of Fe2O3, 2%-3% of MnO2, 1.5%-2.5% of TiO2, 2%-3% of ZrO2, 1.5%-2% of La2O3 and 1%-1.5% of ZrSiO4. According to the heat storage lava solid particulate matter with the good heat stability and the preparation method thereof, by means of raw material synergy, process optimization and surface strengthening, the comprehensive advantages of being excellent in high-temperature stability, good in heat storage-heat conduction performance balance, high in mechanical and structural reliability and resistant to corrosion are achieved; the long-term stable service requirement of the high-temperature heat storage system can be met; and the operation and maintenance cost is reduced.

The present application belongs to the technical field of rock physics, and is especially a longitudinal wave velocity calculation method under a gas-water system. The method comprises the following steps: S1: obtaining longitudinal and transverse wave velocities of a sample under normal pressure and under a limit high pressure through experiments; S2: calculating a skeleton bulk modulus and a clay water relaxation time according to a sample XRD mineral analysis result; S3: converting the wave velocities into moduli; S4: calculating saturated volcanic lava longitudinal wave velocities considering frequency dispersion according to a Gurevich formula; S5: measuring a nuclear magnetic T2 spectrum of the sample under a saturated state; S6: calculating bulk moduli under different saturation degrees; and S7: converting to obtain longitudinal wave velocities under different saturation degrees. The present application explains the reason why the volcanic lava saturation degree-longitudinal wave velocity rule presents a "convex" shape from a mechanism, and effectively calculates volcanic lava longitudinal wave velocities under different saturation degrees.

The application discloses a heat-stable heat storage lava solid particle and a preparation method thereof, and belongs to the technical field of energy storage materials, and comprises the following components: 68-73% of SiO2, 2.5-3.5% of SiC, 11-14% of Al2O3, 4-6% of MgO, 2-3% of Fe2O3, 2-3% of MnO2, 1.5-2.5% of TiO2, 2-3% of ZrO2, 1.5-2% of La2O3 and 1-1.5% of ZrSiO4. The heat-stable heat storage lava solid particle and the preparation method thereof have the following advantages: the raw materials are synergistic, the process is optimized, the surface is strengthened, the high-temperature stability is good, the heat storage and heat conduction performance is balanced, the mechanical and structural reliability is strong, and the corrosion resistance is good, so that the long-term stable service requirement of a high-temperature heat storage system can be met, and the operation and maintenance cost is reduced.

1. Name of the product in this design: Ornament (Lava Rock). 2. Purpose of this design: For use as a decorative item. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

The application provides a sectional grouting detection equipment based on geological exploration and a use method thereof, and belongs to the technical field of geological exploration. The device comprises a vehicle body, three groups of layered grouting holes are arranged at the bottom of a first grouting pipe, sleeve valve pipes are arranged outside the layered energy-saving grouting holes, the sleeve valve pipes are connected with the inner walls of the layered energy-saving grouting holes through stop valve springs, and the upper parts of the sleeve valve pipes are rotationally connected with the layered energy-saving grouting holes through micro rotating shafts. The geological exploration technology of the drill bit combined with the ultrasonic radar is adopted, the radar is taken into the underground during the drilling process, the analysis of the lava stratum is carried out in advance, and the operation process is simplified from the original detection, drilling, rod retraction, grouting, rod insertion, drilling, rod retraction, grouting filling and the like to detection, drilling, gas extraction, drilling, gas extraction, grouting filling and the like. Therefore, the detection, drilling, gas extraction and grouting can be integrated without rod retraction, one-time grouting is used to replace multiple grouting, and the operation efficiency is improved.

Procedure and devices for diverting lava flows by solidifying the edge of the flow with water.With this procedure, the aim is not to stop the entire flow but to create a barrier in an area so that the lava takes another path.Water can be applied by conventional means or using containers or devices that are part of the invention.

The application discloses a method for determining the hydrothermal activity age of a volcanic rock reservoir, and relates to the technical field of volcanic rock identification. The method comprises the following steps: obtaining a zircon sample target of the volcanic rock reservoir to be measured; performing laser Raman spectrum testing to obtain Raman spectrum data of the zircon sample target; processing the data to obtain the peak position and half-height width of the vibration peak v3SiO4 of the zircon sample target; fitting the half-height width and the position parameter of the wave peak center of the vibration peak v3SiO4 to determine the morphological characteristics and composition of the inclusion in the zircon; performing isotopic proportion and trace element composition analysis to determine the formation age of the zircon; and constructing a half-height width-time fitting curve to determine the formation period of the hydrothermal mineral coexisting with the zircon. The method can be used to divide the zircon period of the volcanic lava, and has a good determination on the zircon genesis, thereby providing an important identification basis for the late hydrothermal / tectonic action events and time of the volcanic rock reservoir.

The invention provides a hydraulic coupling model test device for karst tunnel excavation and a use method, and relates to the technical field of tunnel models.The device comprises a box body, and at least one set of door openings directly facing each other are formed in the first side wall and the second side wall of the box body; the partition plate assembly is detachably connected with the box body and divides the interior of the box body into at least two containing grooves, and the at least two containing grooves are suitable for being filled with simulation materials. The water supply assembly comprises a first water tank moving in the height direction of the box body, and the first water tank selectively communicates with the bottom of the box body; the pressure assembly comprises a pressing plate located on the top of the box body, and the pressing plate selectively moves towards or away from the interior of the box body. According to the method, the geological environment of the lava-non-lava contact zone can be truly simulated, meanwhile, excavation is conducted by selecting the door opening, the tunnel excavation process of the lava-non-lava contact zone in a real scene can be simulated, and therefore the risk point in the tunnel excavation project can be predicted.

The invention belongs to the technical field of rock physics, and particularly relates to a longitudinal wave velocity calculation method under a gas-water system. Comprising the following steps: S1, performing an experiment to obtain longitudinal and transverse wave velocities of a sample under normal pressure and extreme high pressure; s2, calculating a skeleton bulk modulus and clay water relaxation time according to a sample XRD mineral analysis result; s3, converting the wave velocity into a modulus; s4, calculating the longitudinal wave velocity of the saturated volcanic lava considering frequency dispersion according to a Gurevich formula; s5, measuring a nuclear magnetic T2 spectrum of the sample in a water saturation state; s6, calculating bulk moduli under different saturations; and S7, carrying out conversion to obtain longitudinal wave velocities under different saturations. According to the method, the reason that the volcanic lava saturation-longitudinal wave velocity rule presents a convex shape is explained from the mechanism; and the volcanic lava longitudinal wave velocities under different saturation conditions are effectively calculated.