40results about How to "Avoid idle work" patented technology

The invention discloses a construction method for a reinforced concrete arched roof of a grain store. The method comprises the following steps of: erecting a scaffold at the middle longitudinal part of a ring beam, and making a pedestal; paving lower chord prestressed steel bars, and performing prestressed tensioning; erecting a lower chord bottom die and a side die, installing a partition plate,and installing an upper chord arched bottom die and an upper chord arched side die at the top of the partition plate; paving upper chord steel bars; pouring concrete; stretching the prestressed steelbars when the strength of the concrete reaches over 85 percent, welding diagonal braces, and obtaining an arched plate after the diagonal braces are welded; and translating the arched plate, and welding and fixing the arched plate with an embedded steel plate. Because the construction mode of overhead prefabrication and integral translation is adopted, a large machine for hoisting is avoided, theconstruction progress is quickened, the safety risk is reduced, the cost is saved, the temporary site is reduced, and the construction efficiency is improved.

The invention discloses a construction method conversion construction method of a super-large-span tunnel in a V-level to IV-level surrounding rock section. The elevation of an excavation arching lineis controlled to be consistent; in transition section construction, a left pilot tunnel temporary middle wall and a right pilot tunnel temporary middle wall on the two sides of a pilot and a rear pilot in a surrounding rock double-side-wall pilot tunnel method simultaneously move towards the middle of the tunnel until the left pilot tunnel temporary middle wall is in contact with the right pilottunnel temporary middle wall, and foot locking anchor rods are applied to the two sides of a temporary inverted arch; and then the right pilot tunnel temporary middle wall is removed, and the left pilot tunnel temporary middle wall is reserved as a middle temporary middle wall of a CRD method. According to the method, a double-side-wall pilot tunnel method is transversely transited to the CRD method through a gradual change method, the time interval between construction method conversion is avoided, and disturbance of later removal of temporary supports of the double-side-wall pilot tunnel method to surrounding rock is reduced; and therefore the construction speed is increased, the construction period is shortened, enforced idleness due to poor organization of work is avoided, and economicbenefits of tunnel construction are improved.

The invention relates to a method for quickening construction of a multiple-arch tunnel. The method includes: firstly, pre-supporting a middle pilot tunnel; and secondly, excavating the middle pilot tunnel, constructing a left main tunnel, a right main tunnel, and a cover arch and a long pipe roof of the middle pilot tunnel, setting a widened segment allowing a loader to turn around in the middle of the middle pilot tunnel, and after the middle pilot tunnel is through, constructing a middle partition wall from an entrance of the middle pilot tunnel to an exit of the middle pilot tunnel. The method has the advantages that construction entering is assisted by advanced small pilot pipes so that entering construction period of the middle pilot tunnel is reduced; the section of the middle pilot tunnel is locally enlarged, the loader is used with a dumper for construction, and accordingly residue discharging efficiency is improved greatly; the construction method of the middle partition wall is modified, so that the main tunnels can be constructed in advance; and the middle partition wall and the main tunnels are constructed in parallel, time and space are more reasonable, and accordingly personnel idleness and machine idleness are avoided and construction speed is increased.

The invention discloses an external tower crane alternate conversion attachment system and a construction method. A tower crane structure comprises a tower crane, a temporary attachment system and a formal attachment system; the temporary attachment system and the formal attachment system are both arranged on the tower crane; the formal attachment system is located below the temporary attachment system; the two ends of the temporary attachment system are connected to the tower crane and a core tube correspondingly; and the two ends of the formal attachment system are connected to the tower crane and an outer frame column correspondingly. For a super high-rise building constructed by adopting a core tube first-moving and outer frame following method, when the height difference between the working surfaces of the core tube and the outer frame is too large, a temporary attachment system is adopted firstly, so that the phenomenon that the tower crane cannot be effectively attached to cause idleness of the tower crane due to the too large height difference between the working surfaces; and when the outer frame column is constructed above the temporary attachment position, temporary attachment is converted into formal attachment, so that the influence of a tower crane attachment rod piece on subsequent decoration and curtain wall construction of a building is avoided, and the overall construction progress of a project is facilitated.

The invention relates to a rotary hearth furnace support carrier roller installation method, in particular to a rotary hearth furnace support carrier roller platform-free installation and adjustment method. The method comprises the steps of preliminarily installing all support rollers in place; determining a pre-buried point A as a 0-degree rear view point for stationing of a total station on a zero line of the design position; determining the position of the center O of a circle of a rotary hearth furnace after the preliminary installation of rotary hearth equipment is completed, and erectingthe total station outside of the circle at which the support rollers are located, and on a point B on an extension line of AO; stationing in the total station, setting the azimuth as 0, establishinga rectangular plane coordinate system with a point O as the origin, and measuring the actual position coordinates of the support rollers one by one; inputting the measured actual coordinates of all the rollers into computer aided design (CAD) by taking the point O in the design drawing of the rotary hearth furnace in the CAD as the coordinate origin, and resolving the difference between the actualmeasured coordinates and design values into a radial direction deviation a and a tangential direction deviation b; giving the result an operator, carrying out fine adjustment on the support rollers one by one, and then fixing the support rollers. The rotary hearth furnace support roller platform-free installation and adjustment method can shorten the construction period and reduce the cost.

The invention discloses a construction method of onsite supply operation for micro surfacing. The method is characterized by comprising the following steps: firstly, using a batching machine to load mineral aggregate into bulk bags in specific proportion in accordance with the performance requirement, and tieing the ropes of the bulk bags; secondly, using one crane truck to stack the mineral aggregate in bulk bags along the line, and using another crane truck to lift the mineral aggregate in bulk bags onto seal equipment for unloading; thirdly, using an integrated liquid supply vehicle with a liquefied asphalt tank and a water tank to transfer the modified emulsified asphalt and the water respectively into the seal equipment through waste water and a water pump or onsite supply; fourthly, using a jubilee truck to carry the cement to the construction site, carrying out onsite cement supply to the seal equipment with manpower; fifthly, performing paving in accordance with the normal construction procedure, after the paving is finished, supplying the material, and then performing the paving again; carrying out the operation repeatedly until the paving is finished. By adopting the construction method, the construction efficiency can be remarkably improved, the construction quality is ensured, materials and fuels are saved; in addition, the operation is convenient, and the construction is environmental protection.

The invention relates to the technical field of building construction, and provides a constructional column construction method. The constructional column construction method comprises the following steps that when pouring of a lower-layer structure of a building is completed and steel bars are erected on an upper-layer structure, a partition plate is arranged at a set position of a constructional column, then column steel bars of a constructional column are erected, the upper ends of the column steel bars are connected with the steel bars of the upper-layer structure, the lower ends of the column steel bars are connected with steel bars reserved in the lower layer structure or penetrate through the partition plate to be implanted into the lower layer structure; a column formwork is erected according to the shape of the constructional column, a pouring hole is reserved in the top end of the column formwork, concrete is poured, and the column formwork is dismantled after the concrete reaches the first preset strength; the partition plates are dismantled, and the space between the constructional column and the lower layer structure is filled with the concrete or cement mortar. According to the constructional column construction method, a main body part of the constructional column and a main body structure of the building are constructed synchronously, the construction efficiency is improved, it is guaranteed that stress of the constructional column is uniform, and the problem of secondary construction is avoided.

The invention is applicable to the technical field of municipal engineering, and provides an intersection tunnel joint building structure and a construction method thereof. The intersection tunnel joint building structure is provided with an upper-layer tunnel, a lower-layer tunnel and a single-hole double-layer joint building section structure, wherein the upper-layer tunnel and the lower-layer tunnel are crossed in a plane, and the joint building section structure is located at a crossed position between the upper-layer tunnel and the lower-layer tunnel; the middle position of the joint building section structure in the vertical direction is separated by a middle plate, and a space above the middle plate is used for allowing vehicles at the upper-layer tunnel to pass; and a space below the middle plate is used for allowing vehicles at the lower-layer tunnel to pass. Through the structure, the vertical height difference between the upper-layer tunnel and the lower-layer tunnel can becompressed to limitation, and the road line type is optimized; and meanwhile, the construction method can start construction from any tunnel face arriving at a crossed node in advance, the down time problem caused by the fact that the construction progress of the upper-layer tunnel and the lower-layer tunnel are different is avoided, the construction period is effectively shortened, the implementation performance is high, the construction cost is low, and the intersection tunnel joint building structure is worthy of wide popularization.

The invention provides a quick installing and embedding device of a concrete dam osmometer. The quick installing and embedding device comprises a galvanized steel pipe, wherein holes are uniformly formed in the surface of the galvanized steel pipe; a bottom cover is arranged on one end of the galvanized steel pipe, and one surface of the bottom cover is embedded in the galvanized steel pipe and istightly connected with the galvanized steel pipe; geotechnical cloth is arranged on the inner wall of the galvanized steel pipe, and the galvanized steel pipe is internally filled with dense medium-coarse sand; an observation osmometer is embedded in the dense medium-coarse sand, an observation cable is arranged on one end of the observation osmometer, and one end of the observation cable is exposed outside the galvanized steel pipe. According to the quick installing and embedding device disclosed by the invention, quick installing and embedding of the dam osmometer can be realized, the interference of installing and embedding construction of the dam osmometer to dam construction, particularly the interference to dam roller compacted concrete construction, can be avoided, the effective utilization time of a compacting machine is increased, and unnecessary idling of labor force is avoided; meanwhile, the installing and embedding efficiency of the osmometer is increased, and the safetyrisk brought by cross operation is reduced.

The invention relates to an arrangement method for a double circulation process of an interior wallboard member production line. An assembly line comprises the following steps: mold cleaning; releaseagent spraying; side form lineating; side form mounting; reinforcing steel bar mounting; embedded part mounting; pouring and vibrating; striking off; leaving to stand and procuring; plastering and press polishing; steam curing; mold disassembling; rough surface treatment; and putting in storage. The assembly line performs construction by adopting two independent circulating assembly lines: an inner circulating assembly line and an outer circulating assembly line. The arrangement method for the double circulation process of the interior wallboard member production line avoids stagnation of theassembly line and idling of the labor force of staff as a result of single circulation of a conventional process. By adopting the inner and outer independent double circulation assembly line circulation method, fields and resources are utilized fully, so that the production efficiency is increased to two times of that of a conventional assembly line.

The invention discloses a semi-reverse construction method for a large-span corridor structure along a street. During construction, a foundation pit support and a basement structure are constructed in sequence, an overground structure is constructed by adopting a semi-reverse construction method, the construction efficiency can be effectively improved and the cost can be saved by combining cross construction of the foundation pit support and the basement structure and the overground structure, more operation time is provided for other professional insertion construction, and the project delay risk is reduced. According to the construction method, construction of an underground diaphragm wall maintenance structure and supporting columns is completed on the ground firstly, then earthwork excavation, inner support construction and bottom plate construction are sequentially conducted, then a creeping formwork is adopted for constructing corridor structure columns to a corridor structure layer on the ground, a corridor steel structure is installed, and other structure floors are sequentially and upwards constructed; and in this way, the overground and underground structures are convenient to operate, mutual assistance is achieved, the influence of a construction working face is avoided, the construction period can be greatly shortened, and construction quality is guaranteed. According to the method, the traffic influence on a commercial core area is reduced, the road occupation of a project is reduced, and more construction working surfaces are provided.

The invention relates to an emulsified asphalt plant-mixed cold-recycled mixture and a construction process thereof. The emulsified asphalt plant-mixed cold-recycled mixture comprises a cold-recycled mixture mineral aggregate, emulsified asphalt and cement, the ratio of the components is as follows: RAP (0-5mm): RAP (5-10mm): RAP (10-30mm): aggregate with the particle size of 10-30mm: mineral powder: emulsified asphalt: cement = 30: 23: 35: 10: 2: 3.3: 1.5; the proportion of water is 3.6%; the construction technology of the mixture comprises the eight steps of original pavement milling and screening, construction lofting, fiber cloth laying, mixing, mixture transportation, paving, compaction and maintenance. The invention has the following beneficial effects: from the perspective of resource saving, 100% of original pavement old materials are fully utilized, no waste material is used, and mineral and land resources are saved; and the regeneration unit performs continuous construction, regeneration, paving and additional paving synchronously. The pavement maintenance construction time is greatly shortened through emulsified asphalt cold regeneration, and time, materials, resources and the like are greatly saved.

The invention discloses efficient geomembrane welding equipment which comprises a working box and an adjusting unit. An inverter and a storage battery are sequentially arranged at the left end of thelower surface of an inner cavity of the working box, an air injection unit is arranged at the right end of the lower surface of the inner cavity of the working box, an adjusting groove is formed in the middle of the lower surface of the inner cavity of the working box, and a welding piece is arranged at the left end of the lower surface of the working box. According to the efficient geomembrane welding equipment, the welding position in front of two geomembranes is cleaned through high-pressure air in the air injection unit, and therefore the situation that the welding effect is affected by dust and impurities left at the welding position is avoided, the geomembranes cleaned by the air injection unit can be cleaned through a cleaning unit, and therefore the welding effect between the geomembranes can be achieved; and the cleaning unit can circularly move through the adjusting unit, then the cleaning range of the cleaning unit can be widened, and therefore the cleaning effect to the welding position of the geomembranes is improved.

This application relates to the field of deep foundation pit construction technology, and particularly to a method for constructing deep foundation pits in a subway transfer node area. The transfer node area includes an enlarged section, a pipeline relocation section, and a main connecting section. A temporary partition is set on the side of the main connecting section to separate the transfer node area from the main section of the first subway line. The enlarged section adopts a concrete support system, while the pipeline relocation section and the main connecting section adopt a hybrid support system of concrete and steel supports. The deep foundation pit construction method includes: Step S1: Traffic diversion and pipeline relocation; Step S5: Foundation pit excavation and support: The foundation pit excavation and support adopts a combination of vertical layering and longitudinal segmentation. The longitudinal segmentation sequence is the enlarged section, the main connecting section, and the pipeline relocation section. When excavating and supporting the foundation pit of the pipeline relocation section, the temporary partition at the corresponding depth is removed simultaneously to avoid idle work and greatly shorten the overall construction time.

The present invention provides an angle-adjustable automatic anchor cable lowering machine and an anchor cable lowering construction method, comprising a lifting assembly and a propulsion assembly, wherein the lifting assembly comprises a base, two groups of guide columns are arranged on the base, a lifting support beam is arranged between the two groups of guide columns, the lifting support beam moves along the concave track inside the guide column, one end of the lifting oil cylinder is hinged to the base, and the other end is hinged to the lifting support beam, a propulsion assembly is arranged on the lifting support beam, the propulsion assembly comprises a propulsion track, a positioner is arranged at the upper end of the propulsion track, a lifter is arranged at the lower end, the positioner is installed on a fixed seat, the lifter is fixed on a sliding seat, the sliding seat moves along the propulsion track, a propulsion oil cylinder is arranged between the fixed seat and the sliding seat, the positioner and the lifter both comprise two groups of clamping oil cylinders, and the telescopic ends of the two groups of clamping oil cylinders are provided with clamping seats for clamping the anchor cable. The lowering machine and method can solve the technical problems of difficult installation, low efficiency, high cost and great safety hazards of the lowering of the arch anchor cable of the underground workshop.

The invention relates to the technical field of construction resource optimization, and discloses a construction quantity determination method and device, electronic equipment and a readable storage medium. The method comprises the following steps: obtaining deployable construction resource parameters; calculating an adjustable construction amount corresponding to the adjustable construction resources based on a corresponding relationship among the adjustable construction resource parameters; and calculating a target construction amount corresponding to the deployable construction resource parameters based on a constraint relationship between the deployable construction amount and the at least one target project. Through the implementation of the method, it is guaranteed that the adjustable construction resources can be utilized to the maximum degree so as to achieve reasonable distribution, waste of the construction resources is avoided, the utilization rate of the construction resources is increased, then environmental pollution aggravation caused by waste of the construction resources is avoided, and environmental pressure is relieved.

The invention discloses a module unit production method, a module unit installation method and a module unit. The module unit production method comprises the following steps that A1, components of the module unit are machined; a11, processing a connecting box of the node connecting device, and processing a friction surface of a fastener of the connecting box; a12, steel beams of the module units are machined; the step A11 and the step A12 can be carried out in sequence and can also be carried out at the same time; and A2, selecting a production mode according to the weight of each component derived by the three-dimensional model and / or the production takt time obtained according to the welding workload of each component measured and calculated by the model, and carrying out assembly, welding, pouring and decoration on the module units. According to the production method, people can be guided to select a proper production mode for assembling, welding, pouring and decorating the module units, the safety problem caused by the fact that the weight of an assembling structure of the module units is too large and the tool bearing capacity is too small is effectively avoided, and the phenomenon that a worker is lost due to the fact that the production takt is not coordinated is effectively avoided.

The present invention is applicable to the field of municipal engineering technology, and provides an intersecting tunnel combined construction structure and a construction method thereof. The intersecting tunnel combined construction structure has an upper tunnel, a lower tunnel and a single-hole double-layer combined construction section structure. The upper tunnel and the lower tunnel are cross-intersected in the plane, and the combined construction section structure is located at the intersection of the upper tunnel and the lower tunnel. The combined construction section structure is separated by a middle plate in the middle position in the vertical direction, and the space above the middle plate is for the passage of vehicles in the upper tunnel; the space below the middle plate is for the passage of vehicles in the lower tunnel. Through this structure, the vertical height difference between the upper tunnel and the lower tunnel can be compressed to the extreme, and the road line shape is optimized. At the same time, the construction method proposed by the present invention can start construction from any heading that arrives at the intersection node first, avoiding the problem of idle work caused by different construction progress of the upper tunnel and the lower tunnel, effectively shortening the construction period, with strong feasibility and low cost, and worthy of large-scale promotion.

The invention relates to a special crane for vertically transporting an explosive. The special crane comprises a main base, a motor, an explosive containing box and a plurality of auxiliary bases, wherein the auxiliary bases are arranged at the side edge of the main base; the auxiliary bases are connected with the main base through detachable self-locking structures; the motor is arranged on the main base, a driving wheel is arranged on an output shaft of the motor, the main base is provided with a rope winding fixed pulley, and the driving wheel and the fixed pulley are in transmission connection through a crawler belt; the explosive containing box is connected with the fixed pulley through a rope. Compared with the prior art, the special crane has the advantages that the safety of hoisting of the explosive is improved, the requirements on that the explosive is hoisted to various locations are met, the manning is reduced, working conditions are improved, meanwhile, construction progress is guaranteed, the safety of construction is guaranteed, the idling of labor force is greatly avoided, the blasting cost is reduced, and a better economic benefit is obtained.

The utility model discloses a foundation pit support inner support advanced segmented dismantling support structure which comprises a pile, a bearing platform arranged on the pile, a wall-attached column arranged on the bearing platform and an inclined column connected to the wall-attached column, and the end, away from the wall-attached column, of the inclined column is connected with the bearing platform on the side, away from an outer wall, of the wall-attached column. The batter post comprises a steel reinforcement framework and outer concrete, one end of the steel reinforcement framework extends into the bearing platform, and the other end of the steel reinforcement framework extends into the wall-attached post. According to the construction method, the mode that the diagonal bracings are additionally arranged in the basement for supporting is innovatively used, the diagonal bracings are poured together with the main body structure, after the strength meets the requirement, the inner support can be disassembled in a segmented mode, and under the working conditions that a complete and overall closed structure is not formed in the basement structure and conventional support replacement cannot be conducted, the inner support can be disassembled; the inclined struts are additionally arranged to offset lateral soil pressure transmitted to the outer wall by the soil body, so that the inner supports can be demounted in sections under the working conditions, the phenomenon of idling of workers during construction section line production is avoided, the construction progress can be accelerated, meanwhile, the frame body investment can be reduced, and the lease cost can be reduced.

The invention discloses a printing device paper tension detecting and processing device. A first board and a second board are arranged in parallel with a preset gap. Paper penetrates the preset gap. A power device is installed on the second board, and a groove, a groove perpendicular to the moving direction of the paper and a slot are formed in the second board. A cutter is composed of a cutter handle fixedly connected with the front end of a driving rod and a plurality of cutter units fixed at one end of the cutter handle far away from the driving rod, and the cutter units are evenly distributed along one end of the cutter handle far away from the driving rod. A plurality of slot units matched with the cutter units are arranged on the second board. A tension detection device for detecting real-time tension value of the paper transmits the real-time tension value to a control device, and the control device compares the real-time tension value and the preset first threshold. When the real-time tension value is larger than the first threshold, the control unit controls the power device to drive the cutter units to enter the slot units matched with the cutter units to cut off the paper. The service life is prolonged.

The present invention discloses a device for tying and positioning steel bars of a water beam of a dock project and a construction method thereof. The device comprises a composite plastic plate bottom mold, a bottom support, a bottom steel bar point rod, a latch, a side steel bar point rod, a clamping device and a steel bar positioning buckle; a plurality of bottom supporters are placed on the composite plastic plate bottom mold at equal intervals; the bottom steel bar point rod is placed on the bottom support, and is fixedly connected to the composite plastic plate bottom mold by a latch; the side steel bar point rod is arranged at both ends of the bottom steel bar point rod, and is fixedly connected by a plurality of screws; the clamping device is arranged on the side steel bar point rod; the bottom steel bar point rod is used to position the bottom transverse beam stirrup; the clamping device is used to position the vertical beam stirrup; the top transverse beam stirrups are connected by steel bar positioning buckles. The present application has a simple structure and is convenient and quick to construct, and can effectively assist in the tying of the steel bars of the water beam, effectively ensuring construction safety while improving construction quality and efficiency.

The invention provides an asynchronous hanging basket with triangular truss type hoisting equipment and a using method thereof, and the asynchronous hanging basket comprises a sliding beam mechanism which is fixedly connected with the upper surface of top plate concrete; the suspension mechanism is connected with the right side of the sliding beam mechanism and comprises a hanging bracket connected with the right side of the sliding beam mechanism through a connector, a bottom basket longitudinal beam fixedly connected with the bottom plate concrete through a connector, and a hanging belt with the bottom connected with the connector; the hanging basket mechanism is connected with the right side of the suspension mechanism through a supporting mechanism; and the walking mechanism is fixedly connected with top plate concrete, the right end of the walking mechanism is connected with the sliding beam mechanism, the sliding beam mechanism, the suspension mechanism, the supporting mechanism, the hanging basket mechanism and the lifting mechanism are pushed to synchronously move on the horizontal plane, and hoisting of the corrugated steel web is completed. The tower crane has high stability, the problems that in existing construction, a tower crane is insufficient in hoisting capacity and insufficient in hoisting range are solved, and the problem that use of a large tower crane or hoisting machinery contradicts with economic benefits and construction efficiency is further solved.

The invention discloses a construction method conversion construction method for super-long-span tunnels in the surrounding rock section of level V to level IV. Controlled excavation is adopted to keep the same elevation of the arching line, and the double side wall pilot pit method of the surrounding rock is used as the leading and leading method in the construction of the transition section. The temporary middle wall of the left pilot pit and the temporary middle wall of the right pilot pit on both sides of the rear guide move to the middle of the tunnel at the same time, until the temporary middle wall of the left pilot pit and the temporary middle wall of the right pilot pit touch, and the temporary inverted arch Lock-foot anchors are applied on both sides; then the temporary middle wall of the right pilot pit is removed, and the temporary middle wall of the left pilot pit is retained as the middle temporary middle wall of the CRD method. This method transitions from the double-side-wall pilot-pit method to the CRD method in the horizontal direction, avoiding the time interval between construction method conversions, and reducing the disturbance of the surrounding rock caused by the removal of the temporary support of the double-side-wall pilot-pit method in the later stage, thus speeding up the construction. , save the construction period, avoid idle work, and improve the economic benefits of tunnel construction.

The invention relates to the technical field of subway construction and particularly relates to a method for synchronously constructing a shield crossing piston air duct and a piston air dust upper structure. The segmented flow construction is employed by a second floor underground, the conversion of an inner support force system is reasonably completed, and a reliable reaction support system is provided for the passing of a shield. During the construction of a soil mold, a pit precipitation well is introduced out, and the stability of a piston air duct bottom plate structure in construction is ensured. After the construction of a middle plate, a middle plate hole is blocked by using a hole blocking plate, therefore, piston structure upper and lower structures are completely isolated, a closed space is provided for the shield crossing piston air duct, an effective reaction support is formed, an end reinforcement process is avoided, and the construction of the piston air dust upper structure is carried out simultaneously. According to the method, the problem that the shield crossing piston air duct and the piston air dust upper structure cannot be synchronously constructed is effectively solved, and the method has the advantages of reasonable operation, high safety and reliability, the effective avoidance of slow work, and the effective shortening of a construction period.

The invention discloses a self-climbing formwork and a core tube binding construction method, and is applied to the field of core tube construction. The self-climbing formwork comprises a lifting frame. The lifting frame is installed on the side face of the core tube and can climb upwards. The lifting frame comprises a top platform, a bar binding platform, a transition platform and a formwork operation platform which are sequentially arranged at intervals from top to bottom. The top platform is used for storing steel bars and binding the steel bars, the bar binding platform is used for binding the steel bars, and the transition platform and the formwork operation platform are used for formwork construction. When the self-climbing formwork is constructed, the top platform and the bar binding platform provide working faces for reinforcement workers to bind super-layer steel bars, the phenomenon that the reinforcement workers have no working faces in the mold closing stage and the concrete pouring stage, and consequently work idling is caused can be avoided, and the comprehensive efficiency of core tube construction is improved.

The invention discloses a gangue bag filling method in thin coal seam wide roadway tunneling under a tight roof. A roadway is tunneled along a coal seam in the roadway tunneling process, and the initial cross section of the roadway is 3.4m wide and 2.5m high; while tunneling the roadway, rock bolting is conducted in a manner that rock bolts are stroke into the roof, the floor and the two sides of the roadway and diamond metal nets are hung for bolting; when the roadway is tunneled for 6m on the basis of the dimension of the initial cross section, the roadway is expanded at the two outer sides of the roadway along the coal seam to form a stowboard; after that, the roadway and the stowboard are alternately tunneled and advance circularly; the coal extracted from the roadway is transported to the ground while the dug-out gangue is transported to the stowboard to be bagged off, thereby forming gangue bags; and the gangue bags are piled up and built in the stowboard in a manner that the gangue bags are firmly connected with the roof of the coal seam and are flush with the wall of the stowboard.

The invention specifically relates to a jumping type air tightness test construction method for a continuous annealing furnace. The method is characterized in that a heating furnace is divided into afirst furnace section and a second furnace section; the first furnace section includes a preheating section, a first heating section and a second heating section; the second furnace section includes athird heating section, a soaking section, a slow cooling section, a fast cooling section, an over-aging section and a balancing section; air tightness test is carried out on the first furnace section; and the fast cooling section in the second furnace section is isolated, the slow cooling section and the over-aging section are connected by a connecting pipe, air tightness test is carried out simultaneously on the slow cooling section and the over-aging section, and air tightness test is carried out separately on the fast cooling section. When the construction progress of the fast cooling section lags behind the other furnace areas and air tightness test cannot be carried out simultaneously on all sections from the third heating section to the balancing section, through air tightness testusing the construction method of the invention, idleness of construction personnel can be avoided, the total duration of initial air tightness test on the second section of the furnace area can be shortened, and the total duration of furnace drying, threading and trail production can be guaranteed.