42results about How to "Prevent collapse accidents" patented technology

The invention provides a shield machine and an anterior shield system thereof. The system comprises an anterior shield body, an excavation device, a conveyor, and a partition plate, wherein the anterior shield body has a cylindrical structure; the excavation device is arranged on fixing components of the shield machine and a head of the excavation device is used for performing multi action excavation operation on different operation points on an excavation surface; and the conveyor is used for discharging dregs excavated by the head of the excavation device, a first end of the conveyor is arranged below the excavation device and a second end of the conveyor is arranged on the rear part of the first end; and the head of the excavation device and the first end of the conveyor are positioned in front of the partition plate, the second end of the conveyor is positioned on the rear part of the partition plate, and the partition plate is provided with a sealing door which can be opened and closed. The invention can avoid the mud cake agglomeration of a cutter, rolling of the shield body, improved treatment of dregs and pressurized cabin entering operation and has the advantages of quick construction progress, high stability and adaptability and the like.

The invention relates to an anti-wind type communication iron tower which comprises a base, a first tower body, a second tower body, a third tower body, a first lifting mechanism, a second lifting mechanism and a supporting mechanism. The supporting mechanism comprises a supporting assembly and a fixing assembly. The supporting assembly comprises a first supporting rod and a supporting unit. The supporting unit comprises a second supporting rod and a sliding groove, the fixing assembly comprises a first fixing unit and a second fixing unit, the first fixing unit comprises a first air cylinder and a push plate, and the second fixing unit comprises a second air cylinder and a plug pin. The anti-wind type communication iron tower is exquisite in design and high in feasibility; when it winds heavily, both the second tower body and the third tower body can be contracted, meanwhile, the supporting mechanism can further achieve the supporting effect on the whole tower body so as to prevent collapse accidents. In addition, when it winds heavily, an antenna platform arranged on the third tower body can be contracted into an anti-wind cavity formed in the second tower body, and equipment on the antenna platform and maintainers are protected.

The invention discloses a high voltage transmission tower monitoring method and system. The system comprises a plurality of tower monitoring terminals and a control center (1) in wireless communication with the tower monitoring terminals. The plurality of tower monitoring terminals are all used for receiving a sampling instruction of the control center (1) and acquiring tower monitoring data which represent a geological condition of a tower foundation section of the tower, and processing the tower monitoring data and then transmitting to the control center (1). The control center (1) is used for sending the sampling instruction to the plurality of tower monitoring terminals at fixed times and receiving a plurality of groups of tower monitoring data acquired by the plurality of tower monitoring terminals, comparing the monitoring parameters of each group of tower monitoring data with corresponding reference parameters in stored reference data one by one, and executing corresponding operations according to comparative results. Due to the adoption of the high voltage transmission tower, the fully automatic online monitoring of the tower can be realized, and the monitoring results are accurate and reliable.

The invention discloses an apparatus and method of monitoring unidirectional force by means of liquid mixing color changing. The apparatus of monitoring unidirectional force by means of liquid mixing color changing includes a bearing mechanism, a hydraulic control valve bank and a display mechanism, wherein the bearing mechanism is arranged at the outside of an anchor pole to be measured or a bolt to be measured; the bearing mechanism includes a cylindrical bearing body and a pressure cavity; the display mechanism is a color displaying cavity; the color displaying cavity is arranged in an annular groove at the outside of the bearing body; the hydraulic control valve bank includes a pressure-reducing valve and a non return valve; and the pressure cavity, the hydraulic control valve bank and the color displaying cavity are correspondingly connected one-to-one. The method of monitoring unidirectional force by means of liquid mixing color changing includes the steps: the bearing mechanism converts the axial force of the anchor pole as hydraulic pressure; and the colored liquid reaches the hydraulic control valve through an oil way in the apparatus after being pressurized; and opening or closing of the valve can be controlled in the corresponding pressure, so that injection and discharge of the liquid in the color displaying cavity can be controlled correspondingly and the color of the liquid in the color displaying cavity can be observed to determine the stress condition of the anchor pole. The apparatus and method of monitoring unidirectional force by means of liquid mixing color changing utilize the sensor to perform mass distribution monitoring for the whole anchoring engineering, and do not need maintenance and management, and do not need special people to perform point inspection, thus having great significance.

The invention discloses a corrugated steel web continuous beam bridge side span closure cast-in-place support structure and a construction method. The structure mainly comprises a cast-in-place support and a temporary support, and has the features that 1, the two supports are independent systems respectively, and the bearing capacity and stability of the cast-in-place support cannot be affected when the temporary support is dismantled after a plurality of cast-in-place box girders are completed; 2, the temporary support is simple to disassemble; and 3, the elevation of a folding section bottomplate template platform is supported or adjusted by effectively utilizing corrugated steel web plate suspension casting hanging basket bottom template hanging rods and framework bolts of a stiff framework, and thus resources are saved. Therefore the corrugated steel web continuous beam bridge side span closure cast-in-place support structure has the advantages that the operation is convenient andefficient, the construction method has the advantages of being simple, safe, reliable, capable of guaranteeing quality and the like, a corresponding construction method is combined, collapse accidents generated when a full-space support and an operation platform with the length of the bottoms of the outermost ends of the cast-in-place box girders which is cast-in-place are dismantled can be avoided, the effects of energy conservation and emission reduction are achieved, and economic benefits and social benefits are remarkable.

The invention discloses a method for calculating the gradient of a wind generation set tower. The method includes the steps that a relation expression between the gradient of the tower, the wind speed and the pitch angle is established and a superposition method is adopted for calculating the offset of the tower; when the wind speed v is smaller than or equal to 12 m / s, an adaptive least squares algorithm is adopted for fitting a function relationship between the wind speed and the gradient of the tower, and therefore the gradient of the wind generation set tower is acquired when the wind speed is zero or close to zero; an equation is solved under the operation condition that the wind speed is larger than the rated wind speed; when the inequation that 12 m / s<V<=25 m / s is satisfied, a multielement nonlinear regression analysis method is adopted for acquiring a relationship between the gradient, the wind speed and the pitch angle, a quadratic polynomial regression model is established, parameters of a multielement nonlinear regression model are estimated through a least square method, and the gradient is acquired. The method has the beneficial effects that the gradients of the wind generation set tower under different wind speed conditions can be acquired and calculation results are accurate.

The invention discloses an offshore wind power jacket structure with additional viscous dampers, and relates to the field of offshore wind power. The offshore wind power jacket structure comprises four jacket leg columns which are uniformly distributed by taking a wind turbine tower as a center, the jacket leg columns are obliquely arranged outwards from top to bottom to form a square conical structure, transition connecting sections used for supporting a wind turbine are fixed to the top ends of the jacket leg columns through inclined supporting rod pieces connected to the viscous dampers in series, and any two adjacent jacket leg columns serving as main supports are connected into a whole through a plurality of inclined supporting sets arranged in the height direction, the each inclined supporting set is composed of two inclined supporting rod pieces which are connected to the viscous dampers in series and arranged in a crossed mode in a welding mode, flange plates are arranged at one ends of the inclined supporting sets and one ends of the viscous dampers in the inclined supporting rod pieces, the ends of the viscous dampers in the inclined supporting rod pieces are connected to the viscous dampers in series, flange plates are arranged at one ends of the inclined supporting rod pieces in a casting mode, the flange plates and the flange plates are connected bolts, the other ends of the viscous dampers are piston rods, and the other ends of the viscous dampers and the other ends of the inclined supporting rod pieces are connected to the jacket leg columns in a welded mode. According to the offshore wind power jacket structure, the anti-vibration performance is obviously improved with lower cost.

The invention relates to the technical field of power transmission and transformation construction, and particularly relates to a power transmission and transformation construction derrick inclining sound and light alarm device based on gravity trigger. The device comprises a gravity trigger device, a sound emitting unit, a light emitting unit and a battery pack, wherein the gravity trigger device comprises a dial plate, a pointer, a heavy punch and contacts, the pointer and the contacts are conductors, the lower end of the pointer is connected with the heavy punch, scales expressing an inclined angle tolerance range of the pointer are formed on the upper edge of the dial plate, and the two contacts are respectively installed on the radii, on which the largest inclined angle tolerance scales of the left and right ends of the pointer are formed, of the dial plate. According to the device, the real-time continuous monitoring of the perpendicularity of a derrick in three dimensions, at multiple angles and in multiple planes can be realized by utilizing a lever principle, construction workers are reminded of taking measures by virtue of the automatic sound and light alarming when the degree of inclination exceeds a permissible error, so as to guarantee the security of workers, and the device is suitable for being widely popularized and applied.

The invention relates to a spliced steel platform for a construction site. A lug plate and an adjusting block are welded to a pull rod, the lug plate and a supporting rod are connected through a pin shaft, the adjusting block is provided with a hole, an upper bolt penetrates into the adjusting block to abut against a floor through an upper nut adjusting top plate, and a side bolt penetrates into the adjusting block to adjust a side plate through a side nut. A front lug plate is welded to a platform beam and is connected with the pull rod through a pin shaft, and a side lug plate is welded to a platform ridge beam and is connected with the supporting rod through a lower pin shaft. A check block, four hanging rings and rails are welded to the platform beam. Steel pipe arrangement and section steel and steel wire rope arrangement which are adopted for a traditional steel platform are not adopted for the spliced steel platform, the spliced steel platform is simple to operate, convenient, rapid, safe and reliable, a process of drilling holes on a building wall or the floor is omitted, a construction process of reperforating is reduced, working efficiency is improved, and safety production accidents caused by collapse of an operating platform can be effectively reduced.

The invention discloses a double-feedback fan blade hub axial extension device and a double-feedback fan thereof. The axial extension device comprises a hub shaft, an extension mechanism, a shaft sleeve, a wind speed sensor, a controller and an output shaft; one end of the hub shaft is connected with fan blades, and the other end is connected with the extension mechanism; the other end of the extension mechanism is connected with one end of the output shaft; the other end of the output shaft is connected with a gear box of the fan; the hub shaft is inserted in one end of the shaft sleeve in anextension manner, and is synchronously rotated with the shaft sleeve; the other end of the shaft sleeve is fixedly connected with the output shaft; the wind speed sensor is connected with the controller; and the controller controls the extension mechanism to drive the hub shaft to move front and back. The mass center position of a power generation module on a fan tower can be adjusted in real time according to external wind speed of the fan, so that the mass center of the power generation module is always kept on the central axis of the tower, and the operation safety and the service life ofthe fan are improved.

The invention relates to an alarming device, and particularly relates to a steel arch bridge overload automatic alarming device, which is composed of a central processor, a display module, a signal receiving module, signal detection modules, a wireless communication module and a power supply module, wherein the output end of the central processor is provided with the signal receiving module; the signal receiving module is connected with at least one signal detection module; the signal detection module monitors pressure deformation of the steel arch bridge in real time; the wireless communication module is connected with the central processor; and the display module is in circuit connection with the central processor and arranged at a starting port of the bridge. The steel arch bridge overload automatic alarming device has the advantages that the steel arch bridge overload condition can be transmitted to the central processor in real time, the steel arch bridge operation condition is controlled by the central processor, the steel arch bridge is in a safety operation state in real time, and a collapse accident due to overload of the bridge can be avoided.

The invention discloses an inflatable greenhouse film, which consists of an upper film, a middle film, a bottom film, a matched air guide pipe and an edge sealing film, wherein the upper film, the middle film and the bottom film are equal in both length and width and are overlapped in the same direction. The middle film is overlapped on the bottom film, the periphery of the middle film is respectively connected with the upper edge and the lower edge of the edge sealing film in an iron-welding way, a transverse iron-welding straight joint is arranged at one second of the ridge width c of the middle film in a longitudinal direction, transverse iron-welding straight joints are equidistantly arranged at intervals of ridge width C, and the two films are compounded at an interval to form a lower ridge-shaped air storage layer. The upper film is overlapped above the middle film, the periphery of the upper film is connected with the upper edge of the edge sealing film in an iron-welding way, transverse iron-welding straight joints are equidistantly arranged between the upper film and the middle film at intervals of ridge width c to form an upper ridge-shaped air storage layer, and the upper ridge-shaped air storage layer is directly compounded above the lower ridge-shaped air storage layer. The air guide pipe penetrates through the middle film of the lower ridge-shaped air storage layer from the two sides, air holes are evenly distributed on the wall of the air guide pipe in the middle film, the air holes communicate the upper ridge-shaped air storage layer and the lower ridge-shaped air storage layer, the two ends of the air guide pipe penetrate through the edge sealing film, the air guide pipe is connected with the edge sealing film in an iron-welding way, one end of the air guide pipe is connected with an external air source and the other end of the air guide pipe is an air outlet. After the inflatable greenhouse film is inflated, the thickness is multiplied and the thermal insulation property is obviously increased.

The invention provides a concrete socket favorable for damping and fixing of building support frame legs, and belongs to the technical field of construction equipment. The concrete socket comprises amiddle annular concrete partition rib, an end high-strength concrete annular rib, a frame leg preserved inserting area, a damping energy consumption setting area, an inner fixed connecting barrel, anouter fixed connecting barrel, rubber concrete, an engineering tripod supporting rod and uplift piles. The end high-strength concrete annular rib is arranged on the edge above a high-strength concretebase to be connected with the high-strength concrete base, the area defined by the middle annular concrete partition rib is the frame leg preserved inserting area, an inner circle in the damping energy consumption setting area is provided with the inner fixed connecting barrel, and an outer circle in the damping energy consumption setting area is provided with the outer fixed connecting barrel. The concrete socket has the beneficial effects that stability performance can be increased, vibration collapsing is prevented, building supporting frame collapsing accidents can be avoided, use is convenient, safe and reliable, and occurrence of casualties or engineering disasters caused by unstable building support frame systems caused by natural disasters or human factors is avoided.

A method for preventing collapse of cut-off dyke is characterized by that several shaped reinforced concrete frames, which has one interception arm and more than two supporting legs, are interconnected and arranged on the front slope of said dyke in such manner that their legs are inserted in river bed, and the cut-off material is arranged in the water around said frames.

Disclosed in the invention is a structure safety monitoring technology for a steel-structure radio and television transmitting tower. With the existing steel-structure radio and television transmitting tower as a carrier, a tilt angle sensor and a wind-velocity indicator are used for monitoring the deformation and wind speed of the steel tower for long time and a relationship between the wind speed and the structural inclination angle is established; and the information is compared with a numerical value simulation result, thereby evaluating the structure safety. The operation is simple; the data are accurate; and the cost is low. A collapse accident can be prevented timely and unnecessary casualties and economic losses can be avoided.

The invention provides a mixed unstacking and stacking method based on 3D vision. The mixed unstacking and stacking method comprises the following steps that a gravity sensing device is arranged on a tray for loading a box body, and the horizontal gravity center position of the box body on the tray is obtained in real time; a 3D vision device is arranged to recognize the size and the edge position of the box body, and a mechanical arm is guided to grab the box body; a grabbing and weighing device is arranged on the mechanical arm, and the weight of the box body is detected while the box body is grabbed; and according to the horizontal gravity center position of the box body on the tray, the size and edge position of the box body and the weight of the box body, the stacking and unstacking sequence is determined, and the mechanical arm is used for completing mixed stacking and unstacking. By means of the above manner, the gravity sensing device can be used for obtaining the overall gravity center position of the box body on the tray in real time, the stacking and unstacking sequence and the stacking position are adjusted, and the safety of the stacking and unstacking process is guaranteed; and the size and the edge of the box body are recognized through the 3D vision device, the space utilization rate on the tray is increased, and the stable and efficient mixed unstacking and stacking process is achieved.

The invention discloses an integrity monitoring method of a field power transmission iron tower. The method includes following steps: 1) a plurality of inclined monitoring points are set on the powertransmission iron tower, an inclination change of the power transmission iron tower is monitored, and data is transmitted to a unified signal relay if the inclination changes; and 2) the signal relaydetermines signals, and if the signals are continued for greater than 2s without interruption, the signal relay transmits the position of the power transmission iron tower to a monitoring center and monitoring personnel is promoted. According to the method, through monitoring of angular deviation of the power transmission iron tower, the structural deformation and damage can be monitored, and footing change of the power transmission iron tower can also be monitored. The iron tower inclines due to footing change, the inclination monitor can monitor the weak inclination, the monitoring personnelcan be monitored in time, prevention is performed in advance, and collapse accidents of the iron tower are avoided.

The invention provides an anti-vibration-collapse inserting type stable base for engineering foot stool, and belongs to the technical field of construction equipment. A base reinforcing connecting plate is arranged at the bottom of an overall structure; an inserting sleeve and an outer wrapping fixing pip ring are arranged at and connected with the upper portion of the base reinforcing connecting plate; a top plate is arranged at and connected with the upper portion of the inserting sleeve and the outer wrapping fixing pipe ring; a stand column reserved through hole is formed in the center of the top plate; a plurality of connecting holes are formed in the outer ring of the base reinforcing connecting plate; a plurality of anti-vibration overturning reinforcing supporting plates are arranged between the inserting sleeve and the outer wrapping fixing pipe ring; a plurality of built-in energy dissipation inclined holes are formed in the anti-vibration overturning reinforcing supporting plates; and energy dissipation rib parts are arranged between the adjacent built-in energy dissipation inclined holes. The anti-vibration-collapse inserting type stable base for engineering foot stool has the beneficial effects that a plurality of the anti-vibration-collapse inserting type stable base for engineering foot stools can be used for being connected with bottom stand columns of the engineering foot stool in an inserted mode, the effect of improving the stability performance of the bottom of the engineering foot stool can be remarkably achieved, and the effects of preventing vibration collapse and preventing the engineering foot stool from toppling over are effectively achieved.

The invention discloses a high voltage transmission tower monitoring method and system. The system comprises a plurality of tower monitoring terminals and a control center (1) in wireless communication with the tower monitoring terminals. The plurality of tower monitoring terminals are all used for receiving a sampling instruction of the control center (1) and acquiring tower monitoring data which represent a geological condition of a tower foundation section of the tower, and processing the tower monitoring data and then transmitting to the control center (1). The control center (1) is used for sending the sampling instruction to the plurality of tower monitoring terminals at fixed times and receiving a plurality of groups of tower monitoring data acquired by the plurality of tower monitoring terminals, comparing the monitoring parameters of each group of tower monitoring data with corresponding reference parameters in stored reference data one by one, and executing corresponding operations according to comparative results. Due to the adoption of the high voltage transmission tower, the fully automatic online monitoring of the tower can be realized, and the monitoring results are accurate and reliable.

The invention discloses a roof caving prevention device for a jacking process of a tower crane. The roof caving prevention device comprises a core shaft and a sleeve frame transverse beam, wherein a rope wheel and a supporting plate are arranged at two sides of the core shaft respectively; a rolling wheel is arranged at the left side of the core shaft; the rolling wheel and the core shaft are connected with the rope wheel and the supporting plate through screws; a rope pressing plate is arranged at the outer side of the rope wheel; a steel wire rope is arranged between the rope wheel and the rolling wheel; a hook is connected with the tail end of the steel wire rope; a curling spring is arranged in the rope wheel; one end of the core shaft is connected with a limiting switch through a shaft coupler; a limiting switch bracket is arranged below the limiting switch; the limiting switch bracket is fixed with the supporting plate through a connecting part A; the supporting plate is fixed with a device shell through a connecting part B; a U-shaped clamp is arranged below the device shell. The device is simple in structure and can be used for effectively preventing a collapse accident inthe jacking process of the tower crane, and the safety of construction personnel is ensured.

The invention discloses an intelligent operation inspection system and method for power transmission equipment, and the system comprises an operation inspection terminal, an intelligent operation inspection monitoring gateway, an intelligent operation inspection center station, an electric power overhead optical cable, and a plurality of control towers. The intelligent operation inspection center station comprises a laser, a first modulator, an electric signal source, and an analog-to-digital conversion module, and a first polarization analyzer, a first circulator, a second polarization analyzer, a demodulator and an optical detector. The control tower comprises a first micro-ring, a second micro-ring, a third micro-ring, a second circulator, a third circulator, a second modulator and a third modulator, the input end of the second modulator is connected with a first GPS antenna, the input end of the third modulator is connected with a second GPS antenna, and the third micro-ring is connected with a Sagnac reflector. The system is simple in structure, combined with an operation and maintenance method, can be effectively applied to operation and maintenance of the power transmission equipment, improves the operation and maintenance efficiency, is high in anti-electromagnetic interference capability, is suitable for working conditions with complex electromagnetic environments in the power transmission equipment, is remarkable in effect, and is convenient to popularize.

The invention relates to an expansion ruler for a glass kiln. The expansion ruler for the glass kiln comprises a fixed ruler body (1), a ruler (2) is arranged on the right side of the upper end of the fixed ruler body (1), a groove with an opening is formed in the right side of the lower end of the fixed ruler body (1), a limiting block (3) is arranged at the upper end of the groove, a pointer (4) is arranged on the left side of the ruler (2), and the pointer (4) is installed on a supporting rod (5). The pointer (4) is fixed on the supporting rod (5) through a fixing bolt (6), the lower end of the supporting rod (5) is fixed on a support (8), the bottom end of the support (8) is fixed on a kiln arch top (9), and the groove is fixed on kiln channel steel (7). The problems that in the production process of an existing glass kiln, too large thermal expansion of the kiln arch top cannot be found in time, a kiln arch top brace cannot be adjusted in time, the arch top collapse phenomenon is caused, and very serious consequences are caused are solved.

The invention discloses a steel support structure of a building foundation pit. By the adoption of the steel support structure of the building foundation pit, the defects that according to an existing foundation pit support structure, since support replacement is needed in the construction process, the number of construction steps is increased, the construction cost is increased, and the construction progress is affected to a certain extent; and in addition, since overload of a steel pipe support cannot be found in time, the steel pipe support is prone to deformation and unstable supporting, even foundation pit collapse accidents are caused, and serious consequences are caused are overcome. The steel support structure of the building foundation pit comprises a supporting pipe and supports which are connected to the two ends of the supporting pipe. End plates are arranged at the ends, connected with the supporting pipe, of the supports. The end plates are detachably connected with the supporting pipe. Embedded plates are arranged at the other ends of the support. The embedded plates are connected to the inner wall of the foundation pit in a supported mode. Annular adjustment pads and shrinkage rings are installed between the end plates and the supporting pipe. The shrinkage rings are each of a hollow structure. Colorful powder and high-pressure released gas with odor are contained in the shrinkage rings. The inner wall and the outer wall of each shrinkage ring are each of a corrugated pipe structure.

The invention relates to a pneumatic membrane building deformation monitoring system. The technical problem that an existing constant-pressure control strategy cannot effectively prevent a membrane top from collapsing under heavy snow load is mainly solved. According to the technical scheme, the pneumatic membrane building deformation monitoring system comprises a pneumatic membrane building composed of a gas membrane building retaining wall and a gas membrane body, and further comprises at least two displacement sensors for monitoring deformation of the pneumatic membrane building, a base, a stay wire, a plurality of annular lifting hooks, a membrane top fixing block and a pneumatic membrane building deformation monitoring device. The base is arranged on an inner wall of the gas membrane building retaining wall , the membrane top fixing block is arranged on the inner top face of the gas membrane body, the annular lifting hooks are evenly arranged on the inner top face of the gas membrane body and located between the membrane top fixing block and the bottom end of the inner top face of the gas membrane body, and the displacement sensors for monitoring deformation of the gas membrane building are installed on the base. One end of the stay wire is connected with the displacement sensors, and the other end of the stay wire penetrates through the annular lifting hooks to be connected with the membrane top fixing block.

The invention relates to a mounting method for a stringing iron tower. The method comprises the following steps that firstly, foundation bolts and nuts are matched, each foundation bolt and the matched nut are called as a locking assembly, the locking assemblies are marked, marks comprise the bolt marks arranged on the foundation bolts and the nut marks arranged on the nuts and corresponding to the bolt marks, and different marks are made on different locking assemblies; secondly, a concrete foundation with pre-embedded foundation bolts is made; and thirdly, support legs of the stringing irontower are supported on the concrete foundation, and the nuts with the nut marks corresponding to the bolt nuts are selected according to the bolt marks on the foundation bolts and locked to the corresponding foundation bolts. By the adoption of the mounting method for the stringing iron tower, the problem that the nuts are locked by mistake and consequently the stringing iron tower falls down in the prior art is solved.

The invention relates to a spliced steel platform for a construction site. A lug plate and an adjusting block are welded to a pull rod, the lug plate and a supporting rod are connected through a pin shaft, the adjusting block is provided with a hole, an upper bolt penetrates into the adjusting block to abut against a floor through an upper nut adjusting top plate, and a side bolt penetrates into the adjusting block to adjust a side plate through a side nut. A front lug plate is welded to a platform beam and is connected with the pull rod through a pin shaft, and a side lug plate is welded to a platform ridge beam and is connected with the supporting rod through a lower pin shaft. A check block, four hanging rings and rails are welded to the platform beam. Steel pipe arrangement and section steel and steel wire rope arrangement which are adopted for a traditional steel platform are not adopted for the spliced steel platform, the spliced steel platform is simple to operate, convenient, rapid, safe and reliable, a process of drilling holes on a building wall or the floor is omitted, a construction process of reperforating is reduced, working efficiency is improved, and safety production accidents caused by collapse of an operating platform can be effectively reduced.

A method for preventing collapse of cut-off dyke is characterized by that several shaped reinforced concrete frames, which has one interception arm and more than two supporting legs, are interconnected and arranged on the front slope of said dyke in such manner that their legs are inserted in river bed, and the cut-off material is arranged in the water around said frames.

The invention discloses a front horizontal flue collapse prevention device of a thermal power plant deduster and belongs to the thermal power plant dedusting field. The front horizontal flue at least comprises a horizontal flue wall, an expansion joint, an inner cavity of a flue and a vertical flue wall, wherein the horizontal flue wall is connected with the vertical flue wall through the expansion joint, mounting holes for a collapse prevention device are formed on bilateral sides of the horizontal flue wall, and the mounting holes are provided with the collapse prevention device. According to the collapse prevention device arranged on the front horizontal flue of a deduster since mixture of dust stratification and water is easy to produce on the front horizontal flue of the deduster, the mixture of the dust stratification and the water inside the flue can be automatically cleared before the flue dust stratification load is over limit bearing load to avoid flue collapse accidents caused by the abnormal load of the mixture of the dust stratification and the water in the front horizontal flue and flue collapse accidents can be effectively avoided due to the facts that the water accumulation in the flue can be found particularly and excessive water accumulation and dust stratification can be discharged before serious accidents occur.

The invention discloses a solid-liquid mixing one-way force monitoring device and method. The solid-liquid mixing one-way force monitoring device comprises an upper shell, a lower shell, a bearing body, light reflecting layers, color changing rings, polarizing films and guided cylinders; the upper shell and the lower shell have a same structure and are of a pie circular ring structure, layers of annular grooves which are inward are formed in the side walls of the shells, elastic pads are arranged in the grooves, the upper shell and the lower shell separately mount one sides where the elastic pads are arranged to the upper surface and the lower surface of the bearing body, so that the elastic pads are sealed in a sealed cavity formed by the shells, the bearing body and the sealed ring; thebearing body is of a cylinder structure with the hollow interior, the guided cylinders are arranged outside the bearing body, the upper shell and the lower shell, and holes are formed in the cylinderwalls of the guided cylinders and used for communicating the inside and outside of the guided cylinders; the exteriors of the guided cylinders are the annular color changing rings, an airtight accommodating cavity is formed by the upper shell, the lower shell, the bearing body, the guided cylinders and the color changing rings, and the airtight accommodating cavity is filled with silicone oil or ethyl alcohol; and the rings of light reflecting layers are arranged on the inner sides of the color changing rings, and the polarizing films are pasted on the outer sides of the color changing rings.The solid-liquid mixing one-way force monitoring device greatly improves the safety performance of engineering facilities.