54results about How to "Reduce Engineering Accidents" patented technology

The invention discloses a multi-stage perforation supercharging method. In the technological processes, a supercharging device is connected with the tail of a perforation gun of the upper level, after the perforation gun of the upper level is detonated, the perforation gun transmits detonation waves to the supercharging device, a baffle igniter of the supercharging device is detonated to ignite a supercharging gun powder mechanism, the supercharging gun powder mechanism generates high-pressure gas to push a supercharging piston to move to shear a shear pin of the supercharging device, and to push the piston to extrude a liquid inside an interlayer oil pipe so as to increase the pressure inside the interlayer oil pipe, and the shear pin of the lower-level detonation device is shorn off to detonate a pressure detonation device and a perforation gun of the lower level so as to complete the perforation operation of the lower level. The method can ensure the stability and the controllability of pressure generated due to the combustion of supercharging gun powder in a supercharging cavity, the pressure is then acted on the supercharging piston to ensure that the supercharging piston moves stably, the method can also realize high-precision shearing, can be used in a pressure type multi-stage perforation process, and is suitable for various well conditions.

The invention discloses a multi-stage perforating pressurizing device. The device comprises a power shell and a pressurizing shell positioned on the lower part of the power shell, wherein a power cavity is formed in the power shell; a pressurizing cavity is formed in the pressurizing shell; the power cavity is communicated with the pressurizing cavity; a diaphragm igniter and a pressurizing gunpowder mechanism positioned on the lower part of the diaphragm igniter are arranged in the power cavity; a pressurizing piston driven by power generated by the power cavity is arranged in the pressurizing cavity and is connected with a piston through a push rod; and the piston is fixed on an intermediate joint through a shear pin. The stability and controllability of pressure generated by the combustion of gunpowder in the pressurizing cavity can be ensured; the pressure is applied to the pressurizing piston, so that the pressurizing piston moves stably; pressure increment is generated in an interlayer oil pipe, so that a next stage pressure initiation device and a next stage perforating gun are reliably detonated; and the multi-stage perforating pressurizing device is used for the pressure multi-stage perforating process, is suitable for various well conditions, and particularly can meet the requirements of a high-inclination well and a horizontal well on multi-section, large-distance and negative pressure perforating.

The invention discloses a modularized assembly type steel structure house building system and belongs to the technical field of structural engineering. According to the purpose of the modularized assembly type steel structure house building system, construction and decoration of the unified specification are carried out in a factory in batches, every construction step of all produced assembly type steel structure apartment modules can be carried out by the same construction team, and therefore the degree of specialization of a constructed building is largely increased, the construction efficiency and construction quality are greatly improved, and meanwhile the probability of occurrence of sudden engineering accidents or errors is greatly decreased. According to assembly type apartment modules, all the construction steps except for connection and fixation of the assembly type steel structure apartment modules are finished in the factory. The modularized assembly type steel structure house building system comprises the assembly type apartment modules and connection components, wherein the assembly type apartment modules comprise beams, columns, floor boards, structures and devices; the structures and the devices are added according to project requirements. At the construction site, apartment units can be connected and fixed through the connecting components.

The invention discloses a pile sinking method for a hollow preformed pile. The method is as follows: a pile point is arranged on the end part of the hollow preformed pile at first and then the hollow preformed pile is placed on a pile driver; after the pile drive is in place, the pipe is rapidly pressed and passes through a miscellaneous fill layer; when the pile is pressed continuously, soil is taken out from the inside of the pile point; soil obtaining is stopped when the height is 0.5 to 1.0 meter away from the designed scale height; and finally the pile is pressed continuously until the designed scale height is reached. By adoption of the method to arrange the pile point on the end part of a static pressure preformed pile, the pile point has three functions of soil cutting, as a mixer and as a soil extruding controller. The soil is taken away through a hollow body of the pile by using high-pressure water or slurry to convert the soil into the slurry in the pile point (the mixer). By conversion of a common soil extruding preformed pile into a 'soil extruding-non-soil extruding' controllable pile, the method greatly reduces the resistance for pressing the pile, widens the application scope, has stable quality, and is pollution-free. Moreover, the method can save the investment and reduce engineering accidents under certain geological conditions.

The invention discloses a control system of a logging drilling sidewall coring tool. The control system comprises a drilling coring ground control box, a winch depth device, a variable frequency power source, a downhole instrument circuit part and a downhole instrument hydraulic part, wherein data acquisition and feedback control are performed on the coring tool through the drilling coring ground control box, various states of a downhole instrument can be detected in time through the downhole instrument circuit part, the power supply state of a downhole motor and the power supply state of the downhole instrument are monitored through a sensor, and the downhole motor can be adjusted and controlled by processing acquired data and controlling the variable frequency power source. According to a control method, automatic control over coring of the coring tool is achieved through the ground control box, an execution motor can be continuously started, a backup arm expands, the stretching displacement of a punch pin is minimal, the pressure of a second pump is maximal, a hydraulic motor rotates, a drill bit stretches out, the hydraulic motor stops rotating when the drilling displacement reaches the core breaking position, and a series of continuous actions that the core breaking drill bit retreats and is taken back is completed.

The invention discloses a circumferential intelligentized reinforcement structure and method of a shield tunnel. A reinforcing and monitoring integrated structure is formed through intelligent fiber composite ribs with built-in distributed optical fiber sensors, circumferentially arranged along the inner side surface of the tunnel. The method comprises the following steps: bonding intelligent FRP (fiber reinforced plastic) ribs with the inner side of the tunnel through bonding materials to form a structure layer with good mechanical property; calculating the circumferential convergence of the structure by monitored circumferential strain, and judging the performance change of the reinforced structure. According to the circumferential intelligentized reinforcement structure and method, facilities are simple, the engineering construction is convenient, the difficult problem of reinforcing and monitoring integration of the conventional shield tunnel can be solved, the market competitiveness is high, and large-scale popularization is facilitated.

The invention relates to a waterproof material, concretely relates to an organosilicon waterproof agent, and belongs to the technical field of coatings. The organosilicon waterproof agent is prepared from, by weight, 55-60% of sodium methyl alcoholate silicate, 10-14% of methyl methacrylate, 3-4% of an emulsifier (octylphenol polyoxyethylene ether: sodium dodecyl benzene sulfonate of 2:1), 0.4-0.6% of potassium persulfate, and the balance of deionized water. The organosilicon waterproof agent has the advantages of firm combination to silicate in concrete, difficult erosion ageing, strong hydrophobicity, good permeability, low engineering cost, reduction of the construction difficulty and intensity of workers, reduction of engineering accidents, reduction of pollution to environment, and obvious advantages.

The invention discloses a device and a construction method suitable for adjusting a protective layer of a bridge pier column reinforcement. The device suitable for adjusting the protective layer of the bridge pier column reinforcement is arranged in a bridge pier column construction position; in the bridge pier column construction, steel reinforcement cages and a steel template are arranged in the bridge pier column construction; the steel template is horizontally arranged; the multiple steel reinforcement cages are arranged in an equally spaced manner; the steel reinforcement cages are perpendicular to to the steel template; the device suitable for adjusting the protective layer of the bridge pier column reinforcement is arranged at one end of the steel template and comprises a manual steel wire rope winch, a hand-cranking rod, a steel wire rope and a winch hook, wherein a bolt hole is formed in one end of the steel template; the winch hook hooks the bolt hole; one end of the steel wire rope is connected with the winch hook; the other end of the steel wire rope is wound on the manual steel wire rope winch; the hand-cranking rod is mounted in the central position of the manual steel wire rope winch; by pressing down the hand-cranking rod, the steel wire rope is enabled to drive the steel reinforcement cages to move to one side of the manual steel wire rope winch, and cushion blocks are additionally mounted on the steel reinforcement cages to adjust the steel reinforcement cages. The device suitable for adjusting the protective layer of the bridge pier column reinforcement has the advantages that the structure is simple, the implementation cost is low, the device is safe, convenient and fast, and the occurrence rate of engineering accidents can be reduced.

The invention belongs to the field of building foundation pit engineering and discloses a hole collapse preventive trenching construction method of an underground diaphragm wall. A construction is composed of a grab bucket (1) of a trenching machine, retaining wall slurry (2), a soil layer (3), a soft soil layer (4), a conduit (5), cemented soil (6), an underground diaphragm wall (7) constructed, and guide walls (8). The underground diaphragm wall easily suffers hole collapse during trenching construction; to solve the problem, a trench of the underground diaphragm wall can be filled with the cemented soil reaching 1 to 2 m above the trench hole collapse part, and soft retaining walls form after settling and compacting; after the cemented soil has stable quality and has certain strength, trenching construction continues, and the soft retaining walls made up of the cemented soil function in retaining jointly with the slurry so as to prevent hole collapse. The environment with the soft soil layer is improved through the cemented soil, the soft retaining walls are formed and finish retaining jointly with the slurry, the problem that lateral supporting force of the slurry is poor is effectively solved, the soft soil layer of high flow plasticity is protected from hole collapse, smoothness of trenching is ensured, and trenching quality is improved.

The invention discloses a top drive well drilling control optimization device. The device comprises a data collection module arranged inside a closed control box, a control system CPU and a data output module; an anti-explosion module is arranged on the control box and used for performing actions allowing operation when the anti-explosion requirement is met inside the control box; the data collection module is used for collecting field measurement parameters of a top drive well drilling system and sending the parameters to the control system CPU; after it is detected that the anti-explosion module performs the actions allowing operation, the control system CPU is informed to be operated; a user input module is arranged on the control box or outside the control box and used for receiving operation information input by a user and sending the operation information to the control system CPU; the control system CPU is used for performing analysis calculation on the field measurement parameters and the operation information so as to generate a control instruction, and sending the control instruction to the data output module; the data output module is used for outputting the control instruction to a corresponding actuator. The well drilling efficiency and safety can be improved.

Cables are matched through a model selection unit according to actual demand data, the actual required laying distance of the cables and the actual required transmission quantity of the cables are obtained, cable demand grades are divided through a distance coefficient XL actual and a transmission quantity coefficient YC actual, and cable parameter data of the cables to be subjected to model selection are obtained; and cable performance coefficients Pi are obtained through a formula, performance grades of the cables are divided through comparison of the cable performance coefficients Pi and acable performance coefficient threshold, then the cable demand grades are matched with the performance grades of the cables in a one-to-one correspondence manner, after matching is finished, a model selection success signal is received through a verification module, and electrical data and mechanical data of the model selection cable are verified. The specification of the cable is determined according to actual requirements, the engineering cost is greatly saved, resources are saved, the working efficiency of engineering is improved, the construction period of the engineering is shortened, meanwhile, the cable quality is strictly controlled, and engineering accidents are reduced.

The invention provides a method for analyzing an opening field and a seepage condition of a rock fracture under different pressures. The method comprises the following steps of step 1, obtaining a splitting test sample; step 2, cutting the splitting test sample; step 3, a test sample A and a test sample B; step 4, dropping a filler onto a fracture surface of the test sample A; step 5, obtaining athree-dimensional model of the initial condition of the fracture surface when the normal pressure is F1; step 6, applying the normal pressure F1; step 7, obtaining the three-dimensional model of the initial overcurrent condition of the fracture surface when the normal pressure is F1; step 8, obtaining an opening field and the seepage condition of the fracture surface when the normal pressure is F1; and step 9, repeating the above steps 5 to 8, and obtaining the opening field and the seepage condition of the fracture surface under different normal pressures. According to the method for analyzing the opening field and the seepage condition of the rock fracture under different pressures provided by the invention, the true opening and seepage condition of a rock opening field under different pressure conditions can be better obtained.

The invention relates to the field of building concrete piles, in particular to a low-prestress-degree and high-ductility mixed reinforced concrete pile and a manufacturing method thereof.The low-prestress-degree and high-ductility mixed reinforced concrete pile comprises a concrete pile body and a reinforcement cage assembly matched with the concrete pile body in section shape; the shear-resistant stirrups are fixed to the peripheries of the prestressed steel bars in a surrounding mode and are arranged in a full-length mode. The prestressed steel bars comprise prestressed steel bars and strength steel bars which are arranged at intervals, the tension control stress sigma con of the prestressed steel bars is 0.5-0.6 time of the tensile strength standard value fptk, and the tension control stress sigma con of the strength steel bars is 0.5-0.6 time of the yield strength standard value fyk of the strength steel bars; the problems that a traditional PHC concrete pipe pile is low in bearing capacity and poor in ductility are solved, meanwhile, compared with a PRC mixed reinforcement pipe pile, the deformation capacity after high-strength hot-binding ribbed steel bars are yielded can be fully utilized, and therefore the ductility and safety storage of components are improved, and the high-strength hot-binding ribbed steel bars can be more widely applied to seismic fortification intensity areas.

The invention relates to a stratum abnormal discontinuous change depth measuring device based on acoustic emission during injection of prefabricated piles, and belongs to the technical field of civilengineering instrument manufacturing. The stratum abnormal discontinuous change depth measuring device is composed of a pile driving device, a monitoring device, a transmission device and an output system, is the novel measuring device, and has the main value that first, the device can be reused, and the equipment cost is reduced; second, the abnormal discontinuous change of a stratum during piledriving is monitored, continuous stratum mutation, the karst roof thickness, the boulder burial depth and the like are detected and early-warned in advance, and the probability of engineering accidents is decreased; third, through a way of synchronously conducting prefabricated pile driving and monitoring, the frequency of drilling and geological exploration is decreased, and the construction costis lowered; and fourth, an acoustic emission sensor is matched with a ground interpretation device, a system is controlled for monitoring, operation is easy, transmission is convenient and rapid, results are accurate, and use is convenient.

The invention discloses an automatic dust-fall spray control system for a tunnel, and a control method thereof. The system is composed of a dust sensor, a data processor, a control host, a cloud monitoring system and a water spraying device; through arrangement of a dust monitor in a tunnel operation area, a signal is transmitted to a control center and the cloud monitoring system; dust concentration warning values of at least two different levels are preset; when the dust concentration of a monitoring site reaches or exceeds the warning values of different levels set through the dust sensor,a solenoid valve of the water spraying device is controlled to open for spraying water to a workplace for dust fall; and through control over different opening degrees of the solenoid valve and different water flow rates corresponding to the warning values of different levels, dust of the workplace is reduced. According to the control system, through setting of multilevel warning thresholds, harmsare restrained at the embryonic stage; the system is improved through the process that the signal is transmitted to a water valve, and the purpose that different warning values correspond to different flow and flow rates for dust fall is achieved; and resources are saved, and targeted dust fall is performed.

The invention discloses a muck improvement method based on cobble and boulder stratum shield engineering characteristic classification. The muck improvement method comprises the following steps: determining the maximum particle size and content of particles in a stratum according to geological exploration data; calculating the transportable and dischargeable characteristic particle size of a selected screw conveyor; dividing the boulders into huge boulders and small boulders according to the drainage characteristic particle size; according to the problems encountered in the shield tunneling construction process, dividing the cobble and boulder stratum shield engineering characteristics into cobble and boulder soil, fine-grain cobble and boulder-containing soil, cobble and boulder-containing gravel soil and cobble and boulder-containing clay; and taking corresponding muck improvement measures for the soil layer according to the classified cobble and boulder stratum shield engineering characteristic classification. According to the method, a particle group division mode of characteristic particle sizes is carried out, and meanwhile, shield characteristic division is carried out on the cobble and boulder stratum according to problems encountered in shield construction, and a control technology for muck improvement is provided in a targeted mode, so that the shield construction efficiency is improved, and the probability of engineering accidents is reduced.

The invention provides a turnplate device and a rotary drilling rig. The turnplate device comprises a mast turnplate component, a turnplate body, a press plate and a bolt, wherein the mast turnplate component is provided with a containing groove and a seam allowance, the turnplate body is arranged in the containing groove, the press plate covers on the turnplate body and supports against the seam allowance, and the press plate is fixed on the mast turnplate component by the bolt. The press plate supports against the seam allowance so that the gravity of the mast is transmitted to a luffing mechanism only through the press plate and the turnplate body, and then the bolt connecting the press plate and the mast turnplate component is not needed to bear overlarge shearing force; therefore, the fracture risk of the bolt caused by incapability of bearing the overlarge shearing force can be reduced.

The invention discloses a protection method for preventing invalidation of a CPU of a construction machinery controller. With a software adoption method, a CPU protection module is embedded into a control program of the controller, so that when a 'crashed' state occurs to the CPU, the controller can still operate in a minimum safe working state. The protection method has the advantage of observability, that is, the CPU can detect the 'crashed' state and give a corresponding fault prompt, and at the same time, the protection method has the advantage of controllability, when the CPU is in the 'crashed' state, a foreground system can control the state with a minimum control task mode, and certain protection is performed on a machine or the controller; and when the CPU recovers from the 'crashed' state, a task control right is returned to the background for processing, and the intelligent level is high.

The invention relates to a rolling wheel type supporting leg and a bridge swivel system and method. The rolling wheel type supporting leg comprises a supporting shell, the lower portion of the supporting shell is rotationally connected with a rolling wheel, the supporting shell is used for being connected with the lower end face of an upper bearing platform, the rolling wheel can walk along the upper end face of a lower bearing platform, and the distance between the central axis of the rolling wheel and the upper end face of the supporting shell can be adjusted. According to the bridge swivelsystem, the roller type supporting leg is used for achieving the swivel process during bridge construction.

The invention discloses an experimental system for researching dispersion characteristics of cohesive soil. The experimental system comprises a water tank, a bracket and a seepage chamber; the bracketcomprises a base, a plate, a first supporting rod and a second supporting rod; a winch and a fixed pulley are mounted on the plate; a winch rope is arranged on the winch and penetrates through the fixed pulley to be connected with the water tank; a first opening, a second opening and a third opening are formed in the lower portion of the water tank; a water inflow pipe penetrates through the first opening; an overflow pipe is arranged in the second opening; the lower portion of the third opening is connected with a water conveying pipe; thewater conveying pipe is provided with a water pump; afirst gravel layer, a first metal net, a sample, a second metal net and a second gravel layer are arranged in the seepage chamber; a conical cylinder is buried in the sample and communicated with thewater conveying pipe. Position adjustment and height positioning can be conducted on the water tank, water erosion of different scouring forces is achieved, the flow velocity is adjusted through thewater pump, water erosion of different flow velocities is achieved, and sample internal erosion experiments under different hydraulic load conditions can be conducted.

The invention discloses an MCU (microprogrammed control unit)-based intelligent braking control device for engineering machinery. The MCU-based intelligent braking control device comprises a vehicle alarm device and a vehicle distance detector. The vehicle distance detector is used for measuring the distances from the engineering machinery to operation projects and comprises an MCU, a power module, a data information processing module, a memory storage module, a vehicle speed monitoring module, a radar detecting instrument, a distance sampling module and a display screen, the vehicle alarm device comprises an alarm module, a wireless data transmission module, a brake apparatus and a monitor, and the power module, the data information processing module, the memory storage module, the vehicle speed monitoring module, the radar detecting instrument, the distance sampling module and the vehicle alarm device are bidirectionally connected with the MCU. The MCU-based intelligent braking control device has the advantages that the MCU-based intelligent braking control device is simple in structure and convenient to mount; various devices are connected with one another, accordingly, vehiclescan be effectively controlled under the effects of instructions of the MCU, the safety and the stability are obviously enhanced as compared with conventional intelligent braking systems, and the driving and riding safety and stability can be effectively improved.

The invention discloses a wellhead device and an operation method thereof and relates to the technical field of oil and gas exploitation. The wellhead device comprises a shell, an upper connector, a setting nipple and a packer; a first channel is formed in the shell, and an opening-closing mechanism for controlling opening and closing of the first channel is arranged on the first channel; the upper connector is connected with the shell, a second channel connected with the first channel is formed in the upper connector, a third channel and a fourth channel are further formed in the upper connector, a second valve is arranged on the third channel, and a pressure gauge is connected to the fourth channel; the lower end of the upper connector is sleeved with part of the setting nipple, an annular space is formed between the setting nipple and the upper connector and communicates with the third channel and the fourth channel, a through hole communicating with the annular space is formed in the side wall of the setting nipple, and a blocking part is arranged on the inner wall of the setting nipple so as to close the lower end of the annular space; and the packer is arranged outside the setting nipple. According to the wellhead device and the operation method thereof, replacement work of a steam-injection wellhead can be completed in a controllable state.

A power engineering safety early warning method based on the difference of image data characteristics, including: using the emergency wireless communication network environment equipped on the project construction site of the power construction company to collect image data of the facilities to be monitored; according to the basic characteristics of the power construction project, treat the monitoring facilities The image data is modeled to generate typical feature vectors; according to the feature vectors of each image data, the object relationship vector model of the image is constructed, and the center of gravity of the image object relationship vector model is calculated; the initial image object relationship vector model and sampling The image data object relational vector model is used for difference comparison; according to the preset weight value of the power engineering project implementation, the state of the current monitoring facility is judged. The invention establishes a complete electric power engineering project construction safety early warning evaluation system, and provides intelligent project implementation safety early warning references for technical management personnel of electric power engineering projects, so as to reduce engineering accidents.

The invention discloses a safe engineering truck which comprises a chassis, an upper rotating disc rotationally mounted on the chassis and a control device. The safe engineering truck is characterized in that a work arm assembly is rotationally arranged on an upper rotating seat; one end of a lifting assembly is hinged to the upper rotating seat, and the other end of the lifting assembly is hinged to the work arm assembly and pushes the work arm assembly to move up and down; the upper rotating seat comprises a cab which can slide front and back relative to the upper rotating seat through a sliding mechanism, and when work arms rotate, the cab slides front and back, so that up-down movement of the work arms is allowed, or the view range is widened.

The invention discloses a circumferential intelligentized reinforcement structure and method of a shield tunnel. A reinforcing and monitoring integrated structure is formed through intelligent fiber composite ribs with built-in distributed optical fiber sensors, circumferentially arranged along the inner side surface of the tunnel. The method comprises the following steps: bonding intelligent FRP (fiber reinforced plastic) ribs with the inner side of the tunnel through bonding materials to form a structure layer with good mechanical property; calculating the circumferential convergence of the structure by monitored circumferential strain, and judging the performance change of the reinforced structure. According to the circumferential intelligentized reinforcement structure and method, facilities are simple, the engineering construction is convenient, the difficult problem of reinforcing and monitoring integration of the conventional shield tunnel can be solved, the market competitiveness is high, and large-scale popularization is facilitated.