149results about How to "Avoid secondary disasters" patented technology

A method for comprehensive utilization of red mud, phosphogypsum and coal gangue comprises the following steps: red mud, phosphogypsum and coal gangue are used as main original burning materials, a correction material is taken as a secondary original burning material, a homogeneous moisture material is prepared through two-stage batching process and is shaped or dried and crushed, and then a clinker product including main ingredients of dicalcium silicate, calcium sulphoaluminate and calcium sulphoferrite is prepared through calcination. The clinker produced by the method can be not only directly sold as a product but also further processed into a cementing material or product for sale by utilizing the prior art. The method provided by the invention is simple in process and low in investment, the production scale can be either big or small, a rapid hardening early strength clinker produced by the method is wide in use and relatively higher in value, not only are lots of clay resources and non-renewable burning coal saved, but also environmental pollution caused by waste pollutants are effectively reduced, secondary disasters is prevented, and high industrial competitiveness and favorable investment economical efficiency are realized.

The invention relates to the asymmetric stress distribution law of a large-dip-angle coal bed tight roof and stress field evolutionary characters after directional blasting pressure relief and provides a targeted large-dip-angle coal mining rock burst orientation prevention method. The method comprises the steps that 1. roof energy releasing is carried out, according to the stress distribution law of the tight roof, ahead roof deep hole blasting design is carried out, and the purposes that elastic energy in a zone is released, and roof weighting steps and intensity are reduced are achieved; 2. secondary energy consumption is carried out, according to the stress field evolutionary characters after roof orientation elastic energy releasing, elastic energy stored in coal bodies at middle-lower zones in a working face is consumed, and secondary disasters are avoided; and 3. secondary danger relieving is carried out, for a determined dangerous zone, roof deep hole blasting hole and coal body pressure relieving blasting are carried out in time, and a large amount of elastic energy in coal and rock masses is released. Finally, the scour-prevention effects of step-by-step pressure relieving and prevention first are achieved.

The invention relates to an electric car battery swap station power battery thermal runaway emergency disposal system. The system comprises a closed tank type battery shelf, a gas extinguisher, an electrical control device, a fume extractor and a fire-resistant rolling shutter door wherein the battery shelf is internally layered; each layer is divided into a plurality of zones; all the zones are physically partitioned through fireproof plates; each zone is internally provided with at least one power battery and internally provided with a power battery thermal runaway sensing device; the gas extinguisher communicates with all the zones through gas pipelines and nozzles independently; the electrical control device is in signal connection with the gas extinguisher and the power battery thermal runaway sensing devices; a blast capacity power device of the fume extractor is in signal connection with the electrical control device; in the normal state, the blast capacity power device operates with a low blast capacity, and the fume extractor is used as a radiating air flue; in the thermal runaway state, the blast capacity power device operates with the maximum blast capacity; and the fire-resistant rolling shutter door is in signal connection with the electrical control device.

The invention provides a composite vacuum heat preservation box for an energy storage sodium sulfur battery module. The composite vacuum heat preservation box is characterized in that a composite vacuum heat preservation technology is adopted; the outer wall temperature of the heat preservation box is room temperature; a planar heating mode is adopted in the heat preservation box; and a plurality of thermal compensation points are provided in the heat preservation box according to a heating size in the heat preservation box, so that a temperature blind area brought by large size of the heat preservation box is eliminated. Heat generated by a heating source in the heat preservation box can be maintained in the heat preservation box to the greatest extent, so that the problem of non-uniform heat or heat loss in a large-size heat preservation state can be solved; the outer wall temperature of the heat preservation box is the room temperature, adverse impact is not caused to the running environment around the heat preservation box; a heat preservation layer of the heat preservation box is less than that in a non-vacuum heat preservation mode, so that the heat preservation box has the advantages of low cost and maintenance freeness.

The invention discloses a debris flow control dam for adjusting peak discharge as well as a design method and application thereof. The debris flow control dam includes a dam foundation and a dam body, wherein a flow control hole used for downstream discharging debris flow is formed in the bottom of the dam body, and a downflow weir is arranged at the top of the dam body; the downflow wire is positioned right above the flow control hole; altitude difference between the top surface of the flow control hole and the bottom surface of the downflow wire exists; sizes of the cross sections of the flow control hole and the downflow wire, and the altitude difference between the top surface of the flow control hole and the bottom surface of the downflow wire are respectively confirmed according to parameters such as the maximum peak discharge of debris flow, downstream designed discharge and diversion quantity, downstream designed silt storage quantity, and duration time of peak discharge of debris flow exceeding the design flow. According to the invention and compared with the prior art, flow process of the debris flow can be adjusted and controlled through fully utilizing the adjusting storage capacity of the flow control dam, the flow of discharged debris flow can be controlled within a designed flow range, the efficiencies of the downstream discharge and diversion project and the silt storage project are given to full play, so that safeguard for the downstream targets of protection is guaranteed, and generation of secondary disaster is avoided.

The invention discloses an Internet of Things-based intelligent fire fighting system, which comprises a fire signal collecting device, a fire fighting facility state collecting device, a sound-light alarm device, an automatic fire extinguishing device and a central control unit, wherein the fire signal collecting device, the fire fighting facility state collecting device, the automatic fire extinguishing device and the sound-light alarm device are in communication connection with the central control unit respectively; the fire signal collecting device collects fire information; the fire fighting facility state collecting device collects the operating state of the fire fighting facility; the sound-light alarm device performs alarm; and the central control unit comprises an analyzing unit ,an automatic fire extinguishing device valid period management unit, a user disposal information pushing unit, a fire fighting disposal information pushing unit, a scene selection unit, a user management unit and an alarm unit. The user can orderly and effectively perform fire fighting and self-rescue according to the push disposal method, the loss in the fire is reduced, a firefighter is helped to be fully prepared, and the quickest and most effective rescue measures are adopted.

The invention discloses a microbial rotten bacterium agent as well as a preparation method and an application thereof. The microbial rotten bacterium agent is formed by mixing and compounding bacillus psychrosaccharolyticus, geobacillus stearothermophilus and bacillus thuringiensis in proportion. The invention further provides the preparation method of the microbial rotten bacterium agent. Based on the optimization combination of the bacillus psychrosaccharolyticus, the geobacillus stearothermophilus and the bacillus thuringiensis, the rotten time is shortened by 10 to 20 days; the deodorization is carried out effectively during the rotten process, so that the environment pollution is avoided; the fatality rate of pests and worm eggs can reach 100%. The rotten agricultural/animal wastes or enteromorpha can directly serve as base fertilizers tilled into the soil, so that the soil structure is improved; the soil fertility is enriched; beneficial bacteria in the soil are increased. Thus, infectious diseases spreading via the soil are avoided.

The invention discloses a method for determining a railway space line position in a karst mountainous area, and aims to enable a tunnel to integrally pass through a section with lower karst water gushing and mud bursting risks, effectively reduce railway engineering risks in the karst mountainous area, greatly reduce line selection cost and save investigation time limit. The method comprises the following steps: arranging a karst hydrodynamic profile along a karst slope in a direction perpendicular to a river; determining the highest underground water level line; determining a lowest underground water level line; dividing a karst vertical seepage zone, a karst seasonal variation zone and a karst horizontal flowing zone; through coordination and cooperation of spatial line position plane position adjustment and spatial line position longitudinal section position adjustment, enabling a railway tunnel to pass through a middle-low-risk karst vertical seepage zone, avoid a high-risk seasonal variation zone and an extremely-high-risk horizontal flowing zone, or form a herringbone slope surface in a preset tunnel.

The present invention discloses a pipeline monitoring early warning system based on a distributed coaxial-cable electric grid strain sensor, and relates to the technical field of stress and strain monitoring and pipeline deformation monitoring systems. The system comprises a distributed coaxial-cable electric grid strain sensor, a distributed interrogator, a monitoring system substation, a cloud server and a remote monitoring center workstation. The distributed interrogator is in data connection with the distributed coaxial-cable electric grid strain sensor, the monitoring system substation isin data connection with the distributed interrogator, the monitoring system substation is configured to transmit data to the cloud server through a GPRS transmission module, and the remote monitoringcenter workstation is in data connection with the cloud server through an Internet. The pipeline monitoring early warning system achieves wide-range, full-coverage and low-cost real-time pipeline monitoring early warning in its true sense so as to avoid generation of large-scale damaging and secondary disaster caused by geological disaster and improve the practicability.

The invention discloses a fault prevention and control device for a local ventilation system on a driving face of a coal mine. The fault prevention and control device comprises a prevention and control pipeline, wherein a fan air outlet and an air cylinder air inlet are arranged on the two end surfaces of the prevention and control pipeline, an all-negative pressure air flow port is arranged on the side wall of the prevention and control pipeline, a rotating shaft is movably arranged in the prevention and control pipeline through a shaft sleeve, a two-way air guide plate is connected on the rotating shaft, the two-way air guide plate is respectively larger than the fan air outlet and the all-negative pressure air flow port, when the two-way air guide plate is vertical, the fan air outlet can be closed, and when the two-way air guide plate is horizontal, the all-negative pressure air flow port can be closed. When power failure of a ventilator occurs or a fault occurs, all-negative pressure air flow of an extraction type ventilation mine can be utilized for continuously supplying air to the driving face so as to ensure the continuity of ventilation of the driving face of the mine and prevent the occurrence of local gas accumulation on the driving face; and when coal and gas burst or other catastrophes and air flow reversion occur on the driving face, the air flow with reversion at a catastrophe place can be prevented from carrying high-concentration gas to enter the local ventilator.

The invention discloses a high cutting slope anchor rope space framework supporting and retaining structure. The high cutting slope anchor rope space framework supporting and retaining structure comprises anti-sliding row piles formed by cast-in-place concrete and retaining walls cast on the anti-sliding row piles, wherein the anti-sliding row piles are transversely and longitudinally arranged in a staggered mode and connected to form a space framework structure; the anti-sliding row piles comprise inner anti-sliding piles, outer anti-sliding piles and cross beams arranged between the inner anti-sliding piles and the outer anti-sliding piles; longitudinal beams and the retaining walls are cast between the adjacent outer anti-sliding piles. The soil thrust bearing capacity is high, the large structural stiffness is achieved, the soil retaining effect is good, the cross dimension of the soil retaining structure can be reduced greatly, the cutting slope area is greatly reduced, and therefore the natural environment is protected, secondary disasters caused by slope cutting are avoided, the high cutting slope anchor rope space framework supporting and retaining structure is suitable for supporting and retaining high cutting slope road inner side slopes, the protection requirements of high and steep slopes with large soil side pressure can be met, and stability and safety of slope excavation are improved.

The invention discloses a flexible connecting pipeline and a construction method for using the flexible connecting pipeline in base isolated buildings. The flexible connecting pipeline comprises a corrugated pipe and a joint connected to the end part of the corrugated pipe, wherein a net cover sleeves the corrugated pipe; a net cover pressing ring is arranged at the connecting part of the net cover and the joint; a circular thermoplastic rubber gasket is arranged on the inner side of the corrugated pipe. The flexible connecting pipeline is suitable for the base isolated buildings. The construction method comprises the following steps of 1) determining a net height of an isolation layer, 2) installing an isolation layer pipeline, 3) installing a fixed rack, 4) installing the flexible connecting pipeline. The flexible connecting pipeline is large in deformability and high in tensile strength, and residues accumulated in the pipeline are easy to clean. By the construction method, the problems that the isolation layer pipeline cannot deform during an earthquake and how pipelines are connected flexibly are solved; the method is easy to perform; the integral security of the base isolated buildings after the earthquake is improved; secondary disasters are prevented from being caused by the damaging of the isolation layer pipeline during the earthquake; the expectation effect of the base isolated buildings is achieved.

The application discloses an explosion-proof bushing elevating seat, comprising a bushing elevating seat body, a metal mesh cover and at least one pressure release valve, wherein the bushing elevatingseat body is provided with at least one of the pressure release valves. The pressure release valves may release the pressure inside the bushing elevating seat body when a failure happens in the bushing elevating seat body to protect the bushing elevating seat body from damage, and the metal mesh cover is covered outside the bushing elevating seat body to avoid that the manual control cover and other components on the bushing elevating seat body fly out when a failure happens to cause secondary disasters. At the same time, the failure may be positioned according to the action sequence of the pressure release valve.

The invention relates to a high flame retardant fireproof power cable, which comprises an oxygen-barrier packing layer, wherein a plurality of conductors consisting of a plurality of soft copper wires are arranged in the oxygen-barrier packing layer; a second fireproof layer is arranged outside the oxygen-barrier packing layer; an armor layer is closely coated on the second fireproof layer; and a high flame retardant low smoke zero halogen sheath layer is arranged outside the armor layer. The invention has the advantages that when the high flame retardant fireproof power cable is manufactured, cables with different cores can be manufactured according to requirements of users, and a protective layer of the cable can be designed according to the laying environment of the users.

The invention discloses a halogen-free flame-retardant cable material, which is composed of the following raw materials in parts by weight: 62-67 parts of methyl vinyl silicone rubber, 30-35 parts of polystyrene, 7-11 parts of fumed white carbon black, 4-7 parts of talcum powder, 5-9 parts of attapulgite, 2-5 parts of dibasic lead phosphite, 6-10 parts of tricresyl phosphate, 3-6 parts of dilauryl thiodipropionate, titanic acid 2-5 parts of tetraisopropyl ester, 2-5 parts of ultraviolet absorber UV531, 1-3 parts of anti-aging agent IPPD, 2-5 parts of antioxidant MB, 3-6 parts of polyvinylpyrrolidone, 7-parts of zinc stearate 11 parts, mica powder 5-9 parts, halloysite 3-7 parts. The invention also discloses a preparation method of the halogen-free flame-retardant cable material. The cable material prepared by the invention has excellent flame retardant performance, does not contain halogen components, does not emit toxic smoke when burning, avoids secondary disasters, and has high safety.

The invention discloses a monitoring point arrangement method for underground space gas explosion risk prevention and control. An effective monitoring point laying strategy is constructed in combination with the total system risk value, the investment reasonability of monitoring point laying and the system risk control rate; the maximum benefit value can be obtained through optimization, fund investment can be saved, the maximum detection efficiency can be obtained, the gas pipeline leakage situation can be found in time, secondary disasters caused by gas leakage are avoided, and the method plays an important role in guaranteeing safe operation of urban gas. On the basis of a traditional risk calculation method, the sensor prediction effect is originally introduced into explosion risk calculation of the adjacent underground spaces, and all the adjacent underground spaces within the gas pipeline leakage influence range serve as a whole to calculate the total risk value of the system.