30results about How to "Reduce collapse accidents" patented technology

The invention discloses a shield tunneling construction method for an n-shaped underground diaphragm wall. The shield tunneling construction method comprises the following steps of step I, formulating a construction process flow; step II, performing the specific construction process: firstly, measuring and setting out; secondly, manufacturing a guide wall; thirdly, preparing and adjusting slurry; fourthly, trenching the underground diaphragm wall and performing bottom-clearing replacement; fifthly, manufacturing and hanging a GFRP (Glass Fiber Reinforced Plastic) reinforcement cage; sixthly, manufacturing and setting a bamboo reinforcement cage; seventhly, grouting underwater concrete; eighthly, constructing joints; ninthly, topping a joint pipe. The shield tunneling construction method disclosed by the invention has the beneficial effects that a tunnel door is not needed to be manually chiseled, so the construction period is greatly shortened; a soil body on the outer side of an envelope structure is not needed to be reinforced, so the construction cost of engineering is reduced; the envelope structure directly plays roles of retaining soil and stopping water at the shield tunneling stage, and the safety of the shield tunneling is greatly guaranteed.

The invention discloses a method and device for detecting the loosening degree of a connecting part of a wind power generation tower, and the method comprises the steps: setting a sensor at each of two sides of the connecting part of the wind power generation tower, and obtaining the vibration data of the wind power generation tower in a first wind speed section after the arrival of typhoon at each time, the vibration data in a second speed section and the vibration data in a third wind speed section; comparing the three pieces of obtained vibration data with the reference vibration data of the initial wind speed of the wind power generation tower in the first section, and judging the loosening degree of the connecting part of the wind power generation tower after the typhoon at each time. Therefore, the method achieves the automatic detection and recognition of the loosening degree of the connecting part of the wind power generation tower, improves the maintenance efficiency of the loosening damage of the connecting part of the wind power generation tower, reduces the collapse accidents of the wind power generation tower, and has the important significance in prevention and reduction of natural disasters.

The invention provides a shield excess hole construction method. After a body structure of a shield well is finished, an underground continuous wall serves as an enclosing structure; glass fiber ribs are used for replacing reinforcements in the position of a shield tunneling machine crossing through a hole door of a groove wall of the underground continuous wall; a reinforcement concrete box is cast before the hole door, and is filled with soil for sealing; when the shield is started, the shield tunneling machine is closed in the reinforcement concrete box by the filled soil; when the shield is arrived, the whole reinforcement concrete box is fully filled with the filled soil; the shield tunneling machine directly cuts off the hole door to finish the starting or the arrival; when the shield is started, the shield tunneling machine directly cuts off the hole door in the closed reinforcement concrete box to finish the starting; and when the shield is arrived, the shield tunneling machine enters the closed reinforcement concrete box to finish the arrival after directly cutting off the hole door.

The present invention relates to a transmission tower model wind power measurement device and a measurement method thereof. The wind power measurement device comprises a transmission tower model measurement cylinder, a strain gauge pasted on the wall of the measurement cylinder and a strain analyzer connected with the strain gauge; when measurement, the measurement cylinder is vertically arranged to allow one end of the measurement cylinder to face upwards, the transmission tower model is arranged on this end, the strain analyzer collects strain value data of the strain gauge, and the size of wind power of the model is obtained according to the corresponding relation of model force and the strain value of the strain gauge and the change of the strain value of the strain gauge before and after application of wind power. The transmission tower model wind power measurement device and the measurement method thereof measure the strain gauge on the measurement cylinder to measure the wind power of the transmission tower model, and the size of the measurement cylinder can be designed according to the concrete shape of the transmission tower model, so that the transmission tower model wind power measurement device and the measurement method thereof are suitable for large-volume, heavy and complex transmission tower model wind power measurement and are simple in measurement process and easy to realize.

The invention relates to a method for carrying out load test on a bridge support frame. The method for carrying out load test on the bridge support frame by prefabricated parts moved by electrically operated gallows frames is characterized by comprising the following steps: firstly placing a template special for loading on a box-beam template on the bridge support frame; installing a plurality of rails on the template special for loading along the longitudinal direction of the bridge support frame; placing the gallows frames on the rails, controlling the gallows frames to be electrically operated to walk to transport the prefabricated parts horizontally to lift and lower the prefabricated parts on the first layer, carrying out load test detection on the bridge support frame and then lifting and lowering the prefabricated parts on the second layer after meeting the requirement; carrying out detection again after completing all loading; after test detection meets the requirement, firstly unloading the prefabricated parts on the second layer and then unloading the prefabricated parts on the first layer after all the prefabricated parts on the second layer are unloaded. The method has good reliability and safety, standard test measurement and high precision of load simulation.

The embodiment of the invention provides a vibration alarm method, a storage medium and electronic equipment, and the method comprises the steps: determining a corresponding equivalent value accordingto the vibration acceleration data of a measurement point, and determining a dynamic safety threshold value according to the equivalent values accumulated one by one; determining a vibration acceleration over-limit probability value according to the maximum vibration acceleration data of the measuring point, and further determining an over-limit probability development trend coefficient accordingto the vibration acceleration over-limit probability value; and determining an alarm state according to a vibration acceleration equivalent value of the measuring point, a dynamic threshold operationresult, an effective value development trend coefficient and an over-limit probability development trend coefficient. The vibration alarm method provided by the embodiment of the invention solves theproblem of false alarm or untimely alarm easily caused by using the design allowable value as the alarm threshold.

The invention relates to a method for eliminating full-automatic two-layer steel coil stacking suspension. The method comprises the following steps that 1, a calculation model for preventing two-layersteel coil stacking suspension is established; 2) determining a non-interference calculation method of two adjacent layers of rolls through a calculation model; and 3) summarizing a reasonable beta interval value or correction rate according to field production practice or experience. The technical scheme is applied to highly-intelligent integrated equipment of a full-automatic large warehouse, double-layer stacking of a finished product warehouse is achieved, the potential safety hazard of stacking suspension caused by mutual position interference of two layers of adjacent steel coils due tovarious reasons is completely eliminated, and the use efficiency of the warehouse and the equipment is improved.

The invention discloses an urban underground disease body full life cycle management method based on a ground penetrating radar, and the method comprises the following steps: 1, carrying out the comprehensive detection of an area which is detected for the first time and reaches a detection cycle through a rapid vehicle-mounted ground penetrating radar, and processing the data of the ground penetrating radar; 2, processing ground penetrating radar data in a region corresponding to general survey abnormity, screening fine detection abnormity, and quantifying the sizes of voids, cavities, loose bodies and water-rich bodies; 3, calculating risk occurrence possibility scores according to the scale of the fine detection abnormity, and dividing risk possibility grades; step 4, classifying the evaluation areas; and step 5, distinguishing and confirming abnormal regions as disease regions and conventional regions. Based on the technical means of the ground penetrating radar, the full-life-cycle management method for detection, evaluation, early warning, treatment and maintenance of the urban road underground disease bodies is established, and the management process and mechanism are perfected, so that the road underground safety early warning capability is improved, and the occurrence of road surface collapse accidents is reduced.

The invention relates to an irregular shaft cleaning and drifting device based on deflection angle flow dividing and a drifting method. The irregular shaft cleaning and drifting device comprises a female connector, a drainage groove, a drifting body, scraping teeth, drifting strips, deflection angle flow dividing holes and a male connector. The female connector is connected with a drill bit, the male connector is connected with a drill rod, the scraping teeth are welded to the drifting strips, the drifting strips are welded to the drifting body, the deflection angle flow dividing holes are holes formed in the drifting strips, the holes penetrate through the drifting body all the time and communicate with a water hole of the drifting body, and the drainage groove is formed in a gap betweenthe two drifting strips. The irregular shaft cleaning and drifting device has the advantages of being suitable for deposition of rock debris in irregular boreholes in a deep well drifting process, capable of enabling the rock debris to be more easily carried to a wellhead in a circulating mode, reducing well wall collapse accidents and trimming the well wall, the borehole cleanliness can be improved, and the irregular shaft cleaning and drifting device is suitable for being widely used.

The invention discloses a steel-fiber high-performance concrete pipe comprising a reinforced concrete pipe body. The two ends of the reinforced concrete pipe body are provided with a socket portion and a spigot portion, the socket portion and the spigot portion are fixedly provided with a steel socket ring and a steel spigot ring correspondingly, a single/double annular groove is formed in the steel spigot ring, and an O-type rubber sealing ring is arranged on the single/double annular groove; and the steel socket rings and the steel spigot rings on adjacent reinforced concrete pipe bodies areconnected in an inserted manner. The steel-fiber high-performance concrete pipe reduces the occurrence of ground collapse accidents, the service life of the pipe is prolonged, the installation efficiency is improved, the operation cost is reduced, and the national economic benefits are improved.

The invention discloses oil drilling equipment capable of automatically adjusting the rotating speed based on geology, and belongs to the technical field of oil drilling. The drilling equipment comprises a drilling platform, a drilling support is arranged on the drilling platform, a drilling motor is arranged on the drilling support and connected with a first drilling connecting rod, the first drilling connecting rod is connected with a second drilling connecting rod, a drilling sleeve is arranged on the drilling platform, and the first drilling connecting rod and the second drilling connecting rod penetrate through the drilling sleeve. A plurality of fixing feet are arranged below the drilling platform and connected with the first drilling connecting rod through a transmission box, an excavating drill bit is arranged at the end, away from the first drilling connecting rod, of the second drilling connecting rod, and a water guide pipe is arranged in the excavating drill bit, penetrates through the second drilling connecting rod and communicates with the first drilling connecting rod. The device has the effect of automatically exploring the rotating speed according to the specific geology, and collapse accidents are avoided while the service life is prolonged.

The invention discloses a support, and belongs to the technical field of engineering machinery. The support comprises a transverse beam (1), a stand column (2) and an inclined support (3), wherein the inclined support (3) is used for supporting the transverse beam (1) and the stand column (2). The support further comprises a balancer (4) and a reminding device (5), wherein the balancer (4) and a reminding device (5) are arranged on the stand column (2) and electrically connected. According to the support, the balancer and the reminding device are additionally arranged on an existing support, the balance degree of the support can be measured within a certain time period, the reminding device does not work if a value displayed on the balancer is kept within a normal balance range, the reminding device works, makes a sound and reminds people to decompress the support or transfer goods on the support if the value displayed on the balancer exceeds the balance value range, the collapse probability of the support is reduced, and the support is simple in structure and convenient to operate.

The invention discloses a power-off protection system for loosening of foundation bolts of hoisting equipment, and relates to the technical field of power supply control of the hoisting equipment. The power-off protection system comprises bolt gaskets, a hole is formed in each bolt gasket, and an automatic reset push switch is arranged in each hole; when the foundation bolts are loosened or fractured, the push switches can automatically reset; the push switches are connected with and control an alternating current contactor with 24V coil voltage; a control electric box is additionally arranged on a power supply line of the hoisting equipment, a transformer is arranged in the control electric box, and the transformer is used for transforming 380V voltage into 24V voltage for control; a power supply inlet wire of the hoisting equipment is connected to a wire inlet end of the alternating current contactor, and a wire outlet end of the alternating current contactor supplies power to the hoisting equipment; and the bolt gaskets are arranged on the foundation bolts respectively, and a control line is connected with the push switches on the bolt gaskets in series. By means of the power-off protection system, the power supply of the hoisting equipment can be cut off in time after the foundation bolts of the hoisting equipment are loosened, and the operation of the equipment is stopped, so that the probability of collapse accidents of the hoisting equipment is reduced.

The invention relates to the field of mining equipment, in particular to a tailing filling sand bin device. The tailing filling sand bin device comprises a sand bin and a falling opening arranged at the bottom side of the sand bin, wherein an auger shaft is rotationally connected in the middle of the sand bin, an auger piece is arranged on the circumferential side wall of the lower part of the auger shaft, the lower end of the auger shaft penetrates through the falling opening and is hinged with a sand sliding groove, an adjusting piece is arranged at the right end of the sand sliding groove,an arc-shaped surface is arranged on the left side of the adjusting piece, a driving assembly for driving the rotation of the auger shaft is arranged on the upper part of the sand bin, and air cylinders are symmetrically and fixedly connected outside the middle part of the sand bin through an annular frame. Tailings are prevented from blocking the falling opening by rotating the auger piece in thesand bin, and meanwhile, the falling accumulation area of the tailings is adjusted by adjusting the upward and downward movement of the left end of the sand sliding groove, so that the accumulation area of the tailings is enlarged; meanwhile, the sand sliding groove is driven by the auger shaft to rotate, the accumulation area is further enlarged, the tailing collapse accident caused by too highaccumulation height of the tailing is reduced to a certain extent, the tailings are prevented from blocking the falling opening too high, and the falling efficiency of the tailings is improved.