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.

A segmented fixed-point hydraulic fracturing device and method for underground drilling in a coal mine, wherein the method mainly includes a segmented fixed-point hydraulic fracturing device in an underground coal mine: installing a segmented fixed-point fracturing device in an open hole until the predetermined fracturing Target layer; 2 Grouting and fixing holes: After using the plug to seal the orifice annulus, use the grouting pump to inject cement slurry into the segmented fixed-point fracturing device, and then return to the Orifice; 3. Pressure displacement fluid: press the rubber pad and displacement fluid into the casing, and keep the pressure until the rubber pad is pressed against the check valve and wait for coagulation; 4. Fracturing: inject fracturing fluid into the casing, press The fracturing fluid breaks through the cement weak surface of the one-way valve structure and then fractures the target layer. The invention provides a device and method for segmental fixed-point hydraulic fracturing and hole fixing for underground drilling in coal mines, which solves the problem of complex and cumbersome steps in the existing pore forming and segmental hydraulic fracturing technology, and improves the hole fixing and segmental hydraulic fracturing. The quality of fracturing has realized the integration of hole fixing and segmented fixed-point hydraulic fracturing.

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 ofrails 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 hasgood reliability and safety, standard test measurement and high precision of load simulation.

The invention relates to a method for performing a load test for a bridge support frame. The method for performing the load test for the bridge support frame with a hand-propelled movable prefabricated part is characterized in that the method comprises the following steps of: firstly installing a load special mould on a box girder mould arranged on the bridge support frame; installing a pluralityof tracks on the load special mould along the vertical direction of the bridge support frame; installing door-shaped hangs on the tracks; pushing the door-shaped hangs with hands to realize the horizontal transportation of the prefabricated part for carrying out the hanging and release of a first layer of prefabricated part, performing load test detection for the bridge support frame, and then carrying out the hanging and release of a second layer of prefabricated part after the requirement of load test detection is reached; and carrying out the detection again after finishing loading; unloading after requirements of testing and detecting are reached, wherein the second layer of prefabricated part is unloaded firstly, and the first layer of prefabricated part is unloaded after the second layer of prefabricated part is completely unloaded. The method has good reliability and safety, and also has high accuracy for test measure standardization and load simulation.

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 through tractive walking 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 gallows frames on the rails, using a tractor to tow the gallows frames 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 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, high test efficiency, standard test measurement and high precision of load simulation.

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 belongs to the technical field of building construction, and specifically relates to a construction method for filling a wall foundation with deep backfill soil. The auger drilling machine used in the construction method includes a body, a rotating column and an auger bit; the top of the body is provided with a The movement arm; the end of the movement arm is rotatably connected with a rotation column; the bottom surface of the rotation column is fixedly connected with a hydraulic cylinder; the bottom surface of the hydraulic cylinder is fixedly connected with a connecting column; the bottom surface of the connecting column is fixedly connected with a screw Drill bit; the auger bit includes a core column and a helical blade; the surface of the helical blade is provided with uniformly arranged rotating grooves; the internal rotation of the rotating groove is connected with a baffle plate; the present invention effectively improves the carrying capacity of the auger bit The ability of soil and rock avoids a large amount of soil and rock falling when the auger bit is exported to the pile hole, which reduces the drilling efficiency and affects the introduction of the steel pipe pile into the pile hole in the later stage, so as to improve the pile hole drilling capacity of the auger drill.

The invention relates to the field of mining equipment, in particular to a sand bin filling device for tailing sand, which includes a sand bin and a drop opening arranged on the bottom side of the sand bin. An auger shaft is rotatably connected to the middle of the sand bin, and the circumferential side wall of the lower part of the auger shaft is An auger is provided, the lower end of the auger shaft passes through the outlet and is hinged with a sliding sand tank, the right end of the sliding sand tank is provided with an adjustment piece, the left side of the adjustment piece is provided with an arc surface, and the upper part of the sand bin is provided with a driving auger shaft to rotate The driving assembly of the sand bin is symmetrically fixed and connected with the cylinder through the ring frame outside the middle part of the sand bin; the invention prevents the tailing sand from blocking the drop opening by rotating the auger in the sand bin, and at the same time adjusts the vertical movement of the left end of the sand slide tank. Adjust the falling and accumulating area of ​​the tailings to realize the expansion of the accumulation area of ​​the tailings. At the same time, the rotation of the sliding sand tank is driven by the auger shaft to further expand the accumulation area, which can reduce the tailings caused by excessive tailings accumulation to a certain extent. Collapse accidents, and avoid tailings clogging too high at the drop opening, and improve the falling efficiency of tailings.

The invention provides a train system and relates to the field of transportation. The train system comprises a train rail set and a train running on the train rail set. The train rail set comprises two parallel reinforced concrete rails and a supporting structure which is used for supporting the reinforced concrete rails and arranged on the ground and connected with the reinforced concrete rails. The train comprises a train head and carriages. The train head is provided with train head wheels. The carriages are provided with carriage wheels. The train head wheels and the carriage wheels correspond to the train rails. Bearings are arranged in the centers of the carriage wheels. Short shafts fixed on the train penetrate the bearings. A power plant is arranged on the train head and connected with the train head wheels. The train system has good stability and requires fewer land sources.

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 discloses a device for improving the seismic resistance of a bridge. The device includesthe bridge body, the bridge main body is laternally spaced with an expansion joint, the two e of the expansion joint are connected by connecting pieces, the two ends of the connecting piece are fixed with the outside of the bridge main body through a steel plate, a positioning plate is symmetrically welded in the middle of the steel plate, a reinforcing rib is integrally formed between the positioning plate and the edge side of the steel plate, a sleeve bar is fixed between the positioning plates, the outside of the sleeve bar is flush with one end of the positioning plate, and a column steel is connected between the sleeve bars; through the high-damping isolation rubber bearing arranged in the invention, by using the special damping formula to consume the horizontal vibration energy transmitted in the earthquake, when the earthquake comes, the vertical support to the bridge main bodywill not transfer all the energy to the bridge main body in the horizontal direction, and the vibration energy will be converted into heat consumption by using the lead core in the reciprocating seismic wave, so as to reduce the wave damage action of the horizontal seismic force on the bridge main body.

The invention discloses an open type shield machine, a support device and a control system and a control method of the support device. The control system can be used for controlling passive retraction of a slotting tool of the support device, and comprises a slotting tool oil cylinder with the slotting tool on a piston rod, a proportional overflow valve with an oil inlet communicated with a rodless cavity of the slotting tool oil cylinder and an oil outlet connected with an oil tank, a controller used for adjusting the pressure of the proportional overflow valve, and a displacement sensor which is used for detecting the extending displacement of the slotting tool and is connected with the controller. According to the control system, the passive retraction of the slotting tool can be achieved, so that the retraction speed of the slotting tool is basically the same as the forward speed of the shield machine and the stability of a soil body supported by the support device is kept; in addition, the control system does not need to be monitored in real time and operated by an operator, so that the labor intensity of the operator is reduced and the accident of soil body collapse caused by improper manual operation is reduced.