25 results about "Volcanic ash" patented technology

The present application relates to a kind of volcanic ash geologic tunnel collapse processing method, comprising the following steps: the face of collapse area is closed;The hole top of collapse area is closed;Radial grouting reinforcement is carried out again to the position that initial support has been made near collapse area;After grouting reinforcement is completed, using pipe roof way is made advance support;According to the initial support form of surrounding rock grade, excavation and support construction are carried out, and settlement observation point is arranged to carry out settlement observation;After supporting collapse area, the hole top of collapse area is backfilled.The present application improves the support quality of tunnel, shortens the construction period of collapse treatment, reduces the cost of later rework, and has strong adaptability and practicality, and is economic and environmental protection.

The application provides a volcanic ash soil shearing capacity detection device, and relates to the technical field of soil shearing detection equipment.The device comprises a detection table, an upper shearing box, a lower shearing box, a positioning assembly, a horizontal pressure assembly, a vertical pressure assembly and a shearing detection assembly.The lower shearing box is slidingly connected to the detection table, and the upper shearing box is slidingly connected to the lower shearing box.A positioning assembly for limiting the position of the upper shearing box is installed in the lower shearing box.The horizontal pressure assembly is used to apply a horizontal thrust to one side of the lower shearing box.The vertical pressure assembly is used to apply a vertical pressure to the ash soil sample in the shearing groove.The shearing detection assembly is used to detect the shearing force of the ash soil sample.The positioning assembly can quickly unlock the fixation of the upper shearing box and the lower shearing box, and the unlocking operation is simple and convenient, so that the upper shearing box cannot move along the length direction of the detection table due to misoperation, the integrity of the ash soil sample in the two shearing grooves is maintained, and the accuracy of the detection of the shearing capacity of the ash soil sample is improved.

The application provides a method and system for evaluating the influence of volcanic ash on urban air quality, relating to the technical field of environmental atmospheric pollutant evaluation and volcanic disaster monitoring, which comprises taking the concentration of sulfate in particulate matter as a key indicator, obtaining air quality monitoring data before, during and after volcanic eruption, automatically determining the influence period in combination with a dynamic threshold, simulating the diffusion path and concentration distribution of volcanic ash by using an atmospheric diffusion model, and predicting the influence range. A visual geographic information map is generated by Kriging spatial interpolation, and a characteristic index (sulfate / concentration ratio) is calculated to divide the influence level of the station, and a regional comprehensive influence index is calculated in combination with the weight of population density, so as to realize high, medium and low influence classification. The application can accurately quantify the contribution of volcanic eruption to urban air quality, and provide a scientific basis for air quality early warning and prevention and control.

The application discloses a control method for large-diameter and large-gradient super-shallow-buried shield launching in a volcanic ash stratum, and the method comprises the following steps: step S1, calculating a stratum reinforcement range based on geological parameters, and reinforcing the stratum at the launching end by directional grouting; step S2, installing a multi-stage sealing device at a shield launching opening, and verifying the sealing property before the opening is broken; step S3, dynamically adjusting the thrust, torque and grouting parameters when the shield is excavated, and controlling the surface settlement to be less than or equal to 3 mm; and step S4, monitoring the shield posture and stratum deformation in real time, and adjusting the construction parameters through data feedback closed-loop regulation. The technical scheme aims to improve the reliability when a large-diameter, large-gradient and shallow-buried tunnel is constructed in a volcanic ash stratum.

To provide an air conditioning facility, etc. that do not cause a significant decrease in cooling capacity at normal times, and can stably keep operation even if an ash fall occurs due to an eruption of a volcano such as Mt. Fuji.SOLUTION: An air conditioning facility comprises an air intake port for introducing outside air into a building, and comprises: a plurality of divided plate-like filters for detachably covering the air intake port in such a manner that they are connected to each other, and capable of blocking volcanic ash; a filter housing part made adjacent to the air intake port, and for housing the plate-like filters stacked on top of each other; and a moving mechanism for moving the filters in the filter housing part to a position where they cover the air intake port.SELECTED DRAWING: Figure 3

The invention provides a multi-task data set construction method for volcanic ash cloud monitoring, and belongs to the technical field of remote sensing information intelligent extraction. According to the method, an atmospheric radiation transmission model and satellite remote sensing observation data are utilized, a high-quality data set which has physical mechanism support and is close to practical application is established, and a solid foundation is laid for training a volcanic ash cloud monitoring model with high precision and strong generalization ability. By comprehensively applying the atmospheric radiation transmission model and the multi-source satellite remote sensing product, on one hand, the radiation characteristics of the volcanic ash cloud under different particle sizes, concentrations, heights and background environments can be accurately simulated based on the atmospheric radiation transmission model, so that a volcanic ash cloud satellite observation data set covering various different scenes is generated; and on the other hand, multi-source satellite remote sensing data is introduced, a data set containing real satellite observation information of the volcanic ash cloud is automatically established, and a key real world reference is provided for model construction.

The application discloses a volcanic ash cloud multi-task monitoring method based on a Transformer and field adaptation, and relates to the technical field of volcanic ash cloud detection and parameter inversion. The application adopts an uncertain-based weighting mode combined with a multi-task loss function, and uses an Adam optimizer to minimize the loss function, so that the model can better capture the relationship between bands from a large amount of simulation data, and is transferred to a real scene, thereby realizing the simultaneous and accurate prediction of information such as the position of a volcanic ash cloud, the cloud top height of the volcanic ash cloud and the volcanic ash concentration.

The application relates to the technical field of shield tunneling, and discloses an intelligent direction adjusting method for shield tunneling in a volcanic ash stratum. The method comprises the following steps: collecting construction data of a shield tunneling machine and a target region through a multi-source sensor, preprocessing the construction data, fusing the preprocessed construction data to obtain real-time monitoring data; acquiring historical tunneling error data of the target region, analyzing the historical tunneling error data and the real-time monitoring data by using a deep learning model, and generating a tunneling direction adjustment instruction; adjusting the advancing speed and the steering angle of the shield tunneling machine and the thrust distribution of a jacking oil cylinder according to the tunneling direction adjustment instruction; generating a mud cake prevention instruction according to the real-time monitoring data, adjusting the cleaning parameters of a mud cake cleaning device according to the mud cake prevention instruction, and displaying the running state and the tunneling direction of the adjusted shield tunneling machine through a man-machine interaction interface. The application solves the control problem of the tunneling direction of the shield tunneling machine, and realizes real-time regulation and control of the advancing speed and the steering angle.

The application provides a method and system for dynamically evaluating the risk of large-diameter shield tunneling in a volcanic ash stratum. The method includes: processing the identified key risk factors to obtain real-time risk scores, determining the influence of each risk factor on the overall risk through sensitivity analysis, and normalizing the initial weights; dynamically adjusting the initial weights based on the real-time risk scores and the sensitivity analysis index to form a comprehensive risk index; and combining the obtained comprehensive risk index with a dynamic risk heat map for risk assessment. This method dynamically adjusts the sensitivity analysis and risk heat map to quantify the impact of key risk factors, dynamically updates the risk status using real-time monitoring data, and provides scientific decision support for large-diameter shield tunneling in volcanic ash strata.

The utility model relates to a pozzolanic raw material feeding adjusting device, which aims to solve the technical problem that volcanic ash inevitably overflows from a joint at present, and comprises an auger main body, a feeding hopper, a connecting frame A, a feeding channel and a connecting frame B, the feeding hopper is arranged at the feeding position of the auger body. The connecting frame A is fixedly arranged at the top of the feeding hopper; the feeding channel is arranged above the feeding hopper; the connecting frame B is fixedly arranged at the bottom end of the feeding channel; the connecting frame A and the connecting frame B are fixedly connected through bolts and nuts; a closed structure is arranged on the inner side of the joint of the connecting frame A and the connecting frame B; the closed structure comprises a square plate; the square plate is arranged on the inner side of the joint of the connecting frame A and the connecting frame B; and the square plate is fixedly connected with the inner side of the connecting frame A through a screw. The connecting frame has the advantages that the inner side of the butt joint of the connecting frame A and the connecting frame B is sealed, and the butt joint gap of the connecting frame A and the connecting frame B is blocked for sealing.

The invention relates to a device for producing thermally activated clay, the device comprising a rotary kiln (10) and a hot gas generating device (20) which is phase-separated from the rotary kiln (10), the hot gas generating device (20) being connected to the rotary kiln (10) via a gas line (23) for conveying the hot gas generated in the hot gas generating device (20).

The invention discloses a volcanic accumulation layer foundation treatment method. The volcanic accumulation layer foundation treatment method specifically comprises the following steps of construction preparation; measuring and setting out; leveling the down-the-hole drill in place; the down-the-hole drill drills to form a hole to form a first drill hole; shifting the down-the-hole drill; a screw pile drilling machine is in place; a drill rod of the screw pile drilling machine drills downwards along the first drill hole to form a second drill hole; a mixture is injected into the second drill hole, and after the second drill hole is filled with the mixture, the drill rod is pumped and lifted to the earth surface at the specified speed; and the next pile is shifted and constructed. The construction method is applied to subgrade screw pile foundation treatment under the volcanic ash geology, efficient construction can be achieved through the method, the construction effect is good, and the overall method is economical. The method is simple and safe in construction, suitable for foundation treatment, especially for volcanic ash stratum conditions, high in applicability and capable of guaranteeing the construction quality of the screw pile.

The invention relates to the technical field of route management, in particular to a route influence analysis and evaluation method for multiple types of meteorological risks. Comprising the following steps that S100, input typhoon and volcanic ash related navigation notification messages are obtained and analyzed, meteorological key information is extracted, the meteorological key information comprises the meteorological occurrence position, the influence intensity and the moving trend, and the meteorological key information is converted into structural data; s200, according to the structured meteorological key information and the corresponding meteorological motion characteristics, constructing dynamic spatial position models under a plurality of different time dimensions in the future, and predicting the spatial distribution range of the meteorology in each time period through the dynamic spatial position models under the different time dimensions; and S300, acquiring space coordinate data of a target route, performing space conflict detection on the space coordinate data of the route and the dynamic space model under each time dimension, and identifying and outputting route segment information influenced by weather according to a conflict detection result.

Materials may be used for mitigation of lost circulation in a subterranean formation. Example methods of lost circulation mitigation may include: introducing a lost circulation material to a zone of interest in a subterranean formation via a wellbore, the zone of interest including depleted zones, zones of low pressure, lost circulation zones, fractured zones, or any combination thereof; wherein the lost circulation material includes: volcanic ash, an activator, and a resinous composition; and solidifying, at least partially, the lost circulation material such that the solidified material at least partially blocks the wellbore from the zone of interest.

The invention discloses a construction method for pulling out a bridge pile foundation in a volcanic ash stratum. The construction method for pulling out the bridge pile foundation in the volcanic ash stratum comprises the steps that S1, construction preparation is conducted, a construction site is determined, the pile length of an original pile foundation is checked, and the position of the exposed pile foundation after a bearing platform is broken and removed is measured; s2, the pile position center is measured, the center of each auxiliary hole is measured according to the pile position center, and auxiliary hole construction and backfilling are conducted; s3, a slewing drilling machine is installed, a steel sleeve with an inner cutter in the slewing drilling machine is used for cutting and drilling, and after an original pile foundation is twisted to be broken, the pile is pulled out and slag is removed; and S4, the pile hole is backfilled, and the steel sleeve is pulled out. The technical scheme aims to adapt to the situation that the hardness distribution of the volcanic ash stratum is uneven, and the pile pulling reliability is improved.

The invention discloses a system and method for improving desert by transporting volcanic ash through foreign trade return no-load transport capacity, and belongs to the technical field of ecological restoration and cross-border logistics cooperation. The system comprises an overseas volcanic ash processing module, a return logistics integration module, a multimodal transport module, a desert improvement construction module, an ecological monitoring module and an income closed-loop module. According to the method, overseas high-quality volcanic ash resources are locked, foreign trade return no-load transport capacity in China is integrated, volcanic ash is transported to the northwest desert area at low cost through marine transportation-railway multimodal transportation, the volcanic ash and sandy soil are mixed and improved according to the depth of 15-25 cm and the proportion of 15%-20%, water-saving irrigation and vegetation reconstruction are matched, and desert-to-ecological land use and ploughing are achieved. According to the method, mass idle capacity can be activated, the desertification control cost can be greatly reduced, the soil quality can be rapidly improved, five strategic values of ecology, grains, logistics, carbon sink and industry are integrated, and the method is an original, subversive and sustainable important technical scheme suitable for the national level.

To protect critical infrastructure from the adverse effects of volcanic ashfall, a natural phenomenon in Japan, we aim to provide a long-life filter system that can be used even during prolonged volcanic ashfall, and to meet the demand for proposals for volcanic ash filter systems. This system will protect major facilities and equipment from atmospheric volcanic ash or fine dust, ensure business continuity in emergencies, and protect defense facilities of national security agencies. The goal is to provide a long-life atmospheric dust filter system that blocks volcanic ash and atmospheric dust, allowing essential equipment such as cooling systems for critical machinery and facilities to always function normally. [Solution] A filter device in which a substantially corrugated filter material is attached to the filter surface, characterized in that the filter material is made of a material that prevents deformation of the attached shape of the filter material by air passing through the filter surface.

This invention discloses a method for removing bridge pile foundations in volcanic ash strata. The method includes steps S1: construction preparation, including determining the construction site, verifying the original pile length, and measuring the exposed pile position after the foundation cap is removed; Step S2: determining the pile center, determining the center of each auxiliary hole based on the pile center, constructing the auxiliary holes, and backfilling; Step S3: installing a rotary drilling rig, using a steel sleeve with an internal cutter to cut and drill, twisting and breaking the original pile, then removing it and cleaning the debris; Step S4: backfilling the pile holes and removing the steel sleeve. This invention aims to adapt to the uneven distribution of soft and hard volcanic ash strata and improve the reliability of pile extraction.

The invention belongs to the technical field of concrete proportioning optimization, and particularly relates to ground volcanic ash concrete stirring equipment and a proportioning optimization method.The ground volcanic ash concrete stirring equipment comprises a stirring tank, one side of the stirring tank is fixedly communicated with a volcanic ash feeding pipe, and a liquid level sensor and a temperature and humidity sensor are installed on one side of the stirring tank; a volcanic ash feeding bin is arranged on the side, close to the volcanic ash feeding pipe, of the stirring tank, a grinding mechanism is arranged on the upper surface of the volcanic ash feeding bin, and a stirring adjusting mechanism is arranged outside the stirring tank. According to the fine-grinding volcanic ash concrete stirring equipment and the matching optimization method, volcanic ash can be ground in a reciprocating mode in real time before feeding, particle size distribution is monitored on line through a laser sensor, unqualified powder is automatically sent back through a circulating air pump system for circulating regrinding, it is ensured that the volcanic ash fineness meets the current matching requirement all the time, and the quality of the volcanic ash is improved. Therefore, the volcanic ash activity of the volcanic ash is stimulated to the maximum extent, and the later strength and durability of the concrete are remarkably improved.

The utility model discloses a kind of volcanic ash circulating device and circuit board manufacturing equipment, it is related to circuit board manufacturing technical field, wherein, volcanic ash circulating device includes cylinder body, stirring mechanism, reflux device and filter structure, cylinder body is equipped with containing cavity and with containing cavity communication feed inlet, containing cavity is used to store volcanic ash, stirring mechanism is used to stir the volcanic ash in containing cavity, reflux device includes reflux pipe, one end of reflux pipe is located above feed inlet, to flow back used volcanic ash to feed inlet, filter structure is placed at feed inlet, filter structure is used to filter the volcanic ash flowing to feed inlet by reflux pipe, by installing filter structure at feed inlet, filter foreign matter in volcanic ash, to avoid hole break phenomenon caused by foreign matter block hole.

The invention comprises a method of making continuous basalt fibers. The method comprises delivering a natural mineral from one or more of hyaloclastite, volcanic glass, volcanic ash, or lava quenched by water of a basaltic, intermediate basaltic or andesitic chemical composition, melting the mineral and extruding the molten material into a continuous fiber.

A lost circulation composition is flowed to a lost circulation zone within a wellbore formed in a subterranean formation. The lost circulation composition includes volcanic ash, an epoxy resin, and a curing agent. The curing agent includes nitrogen. The curing agent crosslinks the epoxy resin to form a plug at the lost circulation zone. The plug prevents fluid from flowing from the wellbore into the subterranean formation through the plug at the lost circulation zone.

This disclosure methods of treating unconsolidated sand formations using a sealant composition, including volcanic ash, an epoxy resin, and a crosslinker.

The invention relates to the field of tests, and particularly discloses test equipment and a lunar soil, volcanic ash and aerolite generation simulation method. The test equipment comprises a working condition simulation module and a trigger module, wherein the working condition simulation module comprises a mounting assembly, a pressurizing assembly and a heating assembly; the mounting assembly comprises a pressure-bearing pipe, a test cavity is formed in the pressure-bearing pipe, and a pressure relief opening communicated with the test cavity is formed in the pressure-bearing pipe; the heating assembly is used for adjusting the temperature in the test cavity; the trigger module comprises a pressure gradient configuration assembly, the pressure gradient configuration assembly comprises n pressure-bearing diaphragms, n is larger than or equal to 2, and a pressure chamber is formed between every two adjacent pressure-bearing diaphragms; the pressure gradient configuration assembly is connected with the pressure-bearing pipe, and the nth diaphragm covers the pressure relief opening; and the pressurizing assembly is used for adjusting the pressure in the test cavity and each pressure chamber. The test equipment has the advantages of being simple in structure and good in test controllability.

The invention provides a method and system for evaluating the influence of volcanic ash on urban air quality, and relates to the technical field of environmental atmospheric pollutant evaluation and volcanic disaster monitoring, and the method comprises the steps: taking the sulfate concentration in particulate matters as a key index, and obtaining the air quality monitoring data before, in and in the later period of volcanic eruption; the influence time period is automatically judged in combination with a dynamic threshold value, the volcanic ash diffusion path and concentration distribution are simulated through an atmospheric diffusion model, and the influence range is predicted. A visual geographic information graph is generated through Kriging spatial interpolation, characteristic indexes (sulfate / concentration ratio) are calculated to perform site influence grade division, regional comprehensive influence indexes are calculated in combination with weights such as population density and the like, and high, medium and low influence grading is realized. According to the method, the contribution degree of volcanic eruption to urban air quality can be accurately quantified, and a scientific basis is provided for air quality early warning and prevention and control.