37results about How to "Guaranteed not to collapse" patented technology

The invention belongs to the technical field of multistoried and high-rise buildings, particularly relates to a semi-rigid connection-bending and constraining support steel frame structure and is composed of a frame column, a frame beam and a bending and constraining support; the frame beam is connected with the frame column by adopting the semi-rigid connection mode and the bending and constraining support is arranged into a center support mode; based on the superiority of the steel structure, the invention can realize the optimum design, save the used steel quantity, reduce the workload of site welding, raise the construction speed, guarantee the quality of connection and is beneficial to structure arrangement; when used in earthquake areas, the restoration after earthquake is convenient and the earthquake damage can be reduced; when the structure is used in the multistoried and high-rise building, the prospect of application is wide.

The invention belongs to the technical field of foundation reinforcement, and discloses a tube-immersed cast-in-situ pile and its construction technology. The tube-immersed cast-in-place pile involves a pile tip, a pile pipe, a geotextile bag, a pile body and a reinforcement cage. The technological process is as follows: 1) 2) Immerse the pipe; 3) Put it into a geotextile bag; 4) Pouring concrete; 5) Hanging the reinforcement cage; 6) Pulling out the pipe; 7) Forming. The invention avoids common problems such as necking piles, broken piles, stilted piles and pile tip water inflow in the traditional sinking tube pouring pile process, and ensures the formation of the pouring piles, thereby effectively increasing the bearing capacity of the piles.

The invention relates to magnetically modified hydrotalcite as well as a preparation method and an application thereof. A raw material of the magnetically modified hydrotalcite comprises the following components: hydrotalcite, Fe<2+>, Fe<3+> and ammonia water. The preparation method for the magnetically modified hydrotalcite is simple and easy to operate; as an excellent adsorbent, the magnetically modified hydrotalcite has a remarkable removal effect on heavy metal ions in wastewater.

The invention relates to a prefabricated concrete component, a shear wall module with the same and a making method of the shear wall module. The prefabricated concrete component comprises a first shear wall plate, rebars are arranged in the first shear wall plate, four sides of the first shear wall plate are integrally formed with an upper edge concealed frame beam, a lower edge concealed frame beam, a left edge concealed frame column and a right edge concealed frame column, a reinforced concrete plate protruding out of the first shear wall plate is arranged on the back of each of the upper edge concealed frame beam, the lower edge concealed frame beam, the left edge concealed frame column and the right edge concealed frame column, a grouting sleeve is embedded in the lower edge concealed frame beam, vertical rebars extending out of the upper edge concealed frame beam are embedded in the upper edge concealed frame beam, each of the left edge concealed frame column and the right edge concealed frame column is provided with a U-shaped closed rebar extending out of the same. The prefabricated concrete component serves as a part of the shear wall module, and the shear wall module can be made by only mounting a concealed support and firmly connecting with another shear wall plate. A concealed support truss is arranged between two shear wall plates, so that good anti-seismic performance is realized.

The invention discloses a lost foam casting method which specifically includes the following steps: step 1: making a lost foam pattern; step 2: drying the prepared lost foam pattern; step 3: carrying out pattern repairing and model forming on the dried lost foam pattern to form a cluster model; step 4: coating the cluster model formed in the step 3; step 5: drying the cluster model coated in step 4; step 6: casting the cluster model obtained in step 5 to form an initial casting; step 7: polishing and painting the initial casting to form a final casting. According to the lost foam casting method provided by the invention, when the displacement between the liquid metal and the EPS cluster model is completed, a plastic film on the surface of a sand box is removed, and vacuum extraction is continued, so that the sand box does not collapse; the process is equivalent to crash handling for the casting, so that the residual stress in the casting is eliminated, and the mechanical properties of the casting are increased.

The invention discloses a foundation trench support technology for secondary branch pipe network project construction. The technology comprises the steps of (1) steel plate pile production; (2) secondary branch pipe network construction preparation; (3) surveying and setting-out; (4) road surface breakage and removal; (5) steel plate pile striking; (6) foundation trench excavation; (7) secondary branch pipe construction; (8) foundation trench backfilling; and (9) steel plate pile pull-out. In the whole construction process, according to the principles of high efficiency, economy and environmental friendliness, the construction period is greatly shortened, engineering efficiency is improved, the stability of a foundation trench in secondary branch pipe network engineering is guaranteed, andthe safety of constructors and equipment is ensured.

The invention discloses a stope point column supporting, reinforcing and recovering method. The method comprises the following steps that channels are constructed at the upper part and the lower part of a point column, the point column is supported and reinforced by adopting a long anchor cable, and the point column is maintained by adopting a flexible net; after stoping of a stope is finished, a charging channel is constructed under the protection of a filling body of the upper channel of the point column, an ore removal channel is constructed on the lower channel of the point column, a pilot shaft is constructed inside the point column, the pilot shaft serves as a free face, and charging blasting is conducted in a drill hole of the long anchor cable, so that the point column is recovered. According to the stope point column supporting, reinforcing and recovering method, the problems that the integrity of the point column is prone to damage, the operation safety is difficult to guarantee, the efficiency is low, the recovery difficulty is high and the recovery dilution rate is high in the conventional point column protection and recovery process are solved.

A prefabrication assembly type underground granary comprises a granary bottom, multiple prefabricated granary wall plates, a granary top and multifunctional pillars, wherein each granary wall plate is of an integral structure formed by combining a plastic plate on the outer side and a concrete slab on the inner side, each granary wall plate is provided with connection devices on the periphery, and the granary wall plates can be connected with adjacent granary wallboards and the multifunctional pillars by means of the connection devices; the multifunctional pillars are wrapped by plastic plates, can be used for positioning the granary wall plates, and are main stress components for bearing soil pressure and grain side pressure and resisting buoyance, and the depth of each multifunctional pillar and each enhancing pillar anchored into soil is greater than the depth of the granary bottom; the underground granary is characterized in that each multifunctional pillar is divided into a plurality of sections from top to bottom, the inner side of each first section on an uppermost layer is provided with a first-layer granary wall plate, the inner side of each second section is provided with a second-layer granary wall plate; by using an arrangement mode similar to that above, arranging is performed until a bottommost-layer granary wall plate is arranged, thus forming an assembly type underground granary structure.

The invention discloses a food logistics box with a constant-temperature sterilization function. The food logistics box comprises a steel box wall, ultraviolet germicidal lamps, a flip-open cover, a bracket and a sealing layer. The steel box wall is fixedly connected with a bottom plate. Reinforcing ribs are arranged on the steel box wall. A control panel is mounted on the steel box wall. A rain-proof plate and a connecting plate are mounted on the flip-open cover. The bracket is fixedly connected with the steel box wall. The sealing layer is hermetically connected with the steel box wall by the aid of silica gel. A temperature regulator is mounted on the sealing layer. A temperature detector is mounted between the ultraviolet germicidal lamps. The ultraviolet germicidal lamps and the temperature detector are mounted on the sealing layer. Positioning grooves and a non-slip mat are arranged on the bottom plate. The non-slip mat is arranged between the positioning grooves. The ultraviolet germicidal lamps can ensure that no bacteria exist in a product box, and moreover, the temperature detector and the temperature regulator are mounted, so that automatic temperature regulation can be realized, and the constant temperature is held.

The invention belongs to the field of man-made bamboo raft cofferdams, and particularly relates to a man-made bamboo raft cofferdam and a construction method thereof. The man-made bamboo raft cofferdam is divided into an upper bamboo raft cofferdam layer and a lower bamboo raft cofferdam layer. The lower bamboo raft cofferdam layer comprises two rows of lower-layer bamboo rafts, and the lower-layer bamboo rafts comprise lower-layer bamboo and iron wires used for tightly twisting the lower-layer bamboo. The length of the portion, located in soil, of the lower-layer bamboo is not smaller than that of the portion, exposed out of the soil, of the lower-layer bamboo. The lower bamboo raft cofferdam layer is constructed between the two rows of the lower-layer bamboo rafts. The upper bamboo raft cofferdam layer comprises two rows of upper-layer bamboo rafts. Upper-layer bamboo of the upper-layer bamboo rafts is vertically driven into the lower bamboo raft cofferdam layer. According to the man-made bamboo raft cofferdam and the construction method thereof, the cofferdam can be reinforced with the bamboo rafts, the strength requirement and the height requirement of the cofferdam can be met, the effect that the cofferdam does not collapse is guaranteed, and meanwhile the sufficient blow-fill capacity can be ensured.

The invention discloses a preparation method of a porous reticulated ceramic enhanced steel-based compound brake block. The method includes the steps: mixing TiB2 powder and additives, and adding mixture into deionized water to sufficiently stir the mixture to prepare ceramic slurry suspension liquid; soaking organic foam bodies into ceramic slurry, drying soaked organic foam bodies, and sinteringthe dried organic foam bodies at high temperature to obtain porous reticulated TiB2 prefabricated bodies; casing the prepared porous reticulated TiB2 prefabricated bodies with metal solution by the aid of a cast-penetration process, and performing cooling and de-molding to obtain the porous reticulated ceramic enhanced steel-based compound brake block. The prepared compound brake block is high infriction coefficient and low in heat expansion coefficient, inter stress of the brake block is uniform, strength and toughness are enhanced, and the service life of the brake block is prolonged.

Provided is a precast assembly type underground granary. The surface of the underground granary is a circle. The underground granary comprises a granary bottom, a plurality of precast granary wall plates, a granary roof and multifunctional posts. The granary wall plates are arc-shaped precast plate blocks; the periphery of each granary wall plate is provided with a connecting device; and each granary wall plate can be connected with the adjacent granary wall plate and the corresponding multifunctional post through the corresponding connecting device. A granary wall is positioned by the multifunctional posts; the depth of the multifunctional posts anchored in to soil is greater than the depth of the granary bottom; and the multifunctional posts are the main bearing components bearing the pressure of soil and grain and resisting buoyancy. The multifunctional posts are characterized in that each multifunctional post is divided into multiple sections from top to bottom, the first layer of the granary wall plates are arranged on the inner side of the first section of the uppermost layer, the second layer of the granary wall plates are arranged on the inner side of the second section, and a circular assembly type underground granary structure is formed by means of similar arrangement modes until the bottom layer of the granary wall plates are arranged. Each precast granary wall plate is an integral structure formed by covering the inside and the outside of concrete with steel plates, the steel plates and the concrete between the steel plates are connected through holdfasts, and the left end and the right end are covered with the steel plates.

The invention relates to an underwater soil body expansion stirring device. The underwater soil body expansion stirring device is fixedly arranged at the lower end of a drill pipe, the drill pipe is adouble-pipe drill pipe with a core pipe, the underwater soil body expansion stirring device comprises an outer tube, an inner tube, a cutting stirring frame, a drill bit and a slurry conveying system, the upper end of the outer tube is fixedly connected to the drill pipe, the inner tube slides up and down to be sleeved with the lower portion in the outer tube, the cutting stirring frame is arranged between the outer tube and the inner tube in a circumferential array manner, and the drill bit is fixedly arranged at the lower end of the inner tube. An underwater bottom expansion pile construction method includes the following steps of determining the expansion stirring range, determining the size of the underwater soil body expansion stirring device, selecting the drill pipe, preparing slurry, drilling a straight hole, conducting expansion stirring, taking soil and conducting pouring of bottom expansion piles. The purpose is to solve the problem that a surrounding non-cohesive soil layer cannot be self-stabilized and is prone to collapsing when the bottom is expanded underwater, and the underwater soil body expansion stirring device and the underwater bottom expansion pile construction method are provided.

The invention discloses a slurry direct writing method for a honeycomb diamond tool. The honeycomb diamond tool is a cylinder with a diameter of 80-150mm and a height of 50-120mm, and its upper and lower top surfaces are provided with several hexagonal honeycombs The side length of the hexagonal honeycomb through holes is 2-3mm, and the total area occupied by the hexagonal honeycomb through holes is 30-40% of the total area of ​​the top surface of the cylinder. The invention can prepare complex honeycomb structures that are difficult to form by traditional methods, and can adjust the printing size of honeycomb holes according to grinding requirements. These porous honeycomb structures can improve the space for chip storage and chip removal, effectively remove chips generated by grinding, and accelerate heat dissipation. , Good self-sharpening, avoid thermal damage caused by clogging.

The invention discloses a prefabricated assembly-type underground granary. The flat shape of the underground granary is round. The prefabricated assembly-type underground granary comprises a granary bottom, a plurality of prefabricated granary wall plates, a granary top and multifunctional columns, wherein the granary wall plates are arc-shaped prefabricated plate blocks; connecting devices are arranged on the peripheries of the granary wall plates; the granary wall plates can be connected with the adjacent granary wall plates and the multifunctional columns through the connecting devices; the multifunctional columns can be used for locating a granary wall; the depths that the multifunctional columns are anchored into earth are deepr than the depth of the granary bottom; the multifunctional columns are main stress components for bearing the pressure of the earth and the pressure of grains and resisting buoyant force. The prefabricated assembly-type underground granary is characterized in that the multifunctional columns are divided into several sections from tops to bottoms; the inner sides of first sections of the uppermost layer are provided with a first layer of the granary wall plates; the inner sides of the second sections are provided with a second layer of the granary wall plates; the granary wall plates are arranged until the bottommost layer of the granary wall plates by using a similar arrangement way, so as to form a round assembly-type underground granary structure; the prefabricated granary wall plates are of integral structures combined by inner-side steel plates and outer-side concrete slabs; the inner-side steel plates are connected with the outer-side concrete slabs by adopting ground anchors; further, and the left end part and the right end part are both clad with U-shaped steel plates.

The invention discloses a preparation method for a meatball. The preparation method comprises the following steps: selecting raw materials, finishing, cutting and stirring, seasoning, stirring, preparing the meatball, packaging and storing. According to the invention, meat is shredded when meat stuffing is prepared, and then the shredded meat is ground into meat grains, so that uniform grease of meat stuffing is guaranteed and taste is guaranteed; few mushrooms are added into the meat stuffing, so that freshness of meat stuffing is promoted and greasy feel of meat stuffing is reduced; due to the addition of sweet potato flour, the greasy feel of meat stuffing is reduced, and meanwhile, the coagulating property of meat stuffing is promoted and the end product of meatball is prevented from collapsing; boiled water is adopted for preparing the meatball, so that the greasy and unhealthy problems of the traditional fried meatball can be avoided, and meanwhile, the freshness of the meatballcan be guaranteed; the meatball is free from preservative and additive and is healthy and nutritive.

The invention discloses a gob-side entry retaining dynamic pressure area reinforced active support method and a roof separation lossless monitoring device for monitoring the support effect, which are characterized in that super-large-diameter anchor cables are added in advance on an advanced support section 20m away from a gob-side entry retaining in front of a working surface to be matched with the positions of anchor cables in the original support, so that an active superposition support structure is formed; the gob-side entry retaining method not only can ensure that the roadway roof of the forepoling area is not collapsed and the operation area is safe, but also can save the labor intensity of workers in the forepoling area, improve the roadway utilization space and ensure the efficient and safe stoping of the intelligent stoping working face. According to the nondestructive monitoring device and method for the roadway roof separation, the nondestructive monitoring method is adopted, a stress wave monitoring receiver is tightly attached to roof rock, an impact rod impacts a roof, stress waves are generated on the roof, and the distance of the roof separation is calculated according to the time difference of the stress waves received twice and the wave velocity of the stress waves. The device can be repeatedly used, and drilling on the top plate is not needed.

The invention discloses an intermittent prefabricated overhead heat insulation pipe and a manufacturing method thereof, and relates to the technical field of long-distance steam conveying. The heat insulation pipe comprises a core pipe, an inner lining layer, an outer protection pipe, a plurality of hard heat insulation sections and a plurality of soft heat insulation sections, wherein the hard heat insulation sections and the soft heat insulation sections are arranged between the inner lining layer and the outer protection pipe, wrap the outer side of the inner lining layer and are arranged in a staggered mode in the length direction of the core pipe; the hard heat insulation sections and the soft heat insulation sections are in staggered lap joint through a heat insulation material; andan organic heat insulation layer is arranged on the inner side of the outer protection pipe and used for tightly wrapping the hard heat insulation sections and the soft heat insulation sections in theouter protection pipe together. By implementing the technical scheme provided by the embodiment of the invention, the manufactured heat insulation pipe can achieve the effects of bearing the operation load of a heat supply network and considering the heat insulation function, has excellent heat insulation performance, is low in heat conductivity coefficient and light in weight, beneficial to remarkably reducing the energy loss of a heat supply pipe network, and applied to the field of prefabricated overhead steam conveying so as to achieve the effects of safety, stability, high efficiency andenergy conservation of the whole pipe network.

The invention discloses an anti-collapse high-filling water-based woodware transparent primer. The transparent primer is prepared from a component A, a component B and water. The component A is prepared from the following raw materials in parts by weight: 65 to 80 parts of water-based hydroxy acrylic resin, 0.2 to 0.8 part of a wetting agent, 0.2 to 1 part of a dispersing agent, 0.2 to 0.6 part of a defoaming agent, 0.4 to 1 part of transparent powder, 1 to 2 parts of polishing powder, 6 to 10 parts of a coalescing agent, 0.1 to 0.2 part of a flatting agent, 3 to 5 parts of anti-settling slurry, 3 to 5 parts of water and 0.2 to 0.6 part of a thickening agent; the component B is a curing agent; the weight ratio of the component A to the component B to the water is 100: 20: (10-20). the formula primer provided by the invention not only can ensure the mirror surface sealing effect of a paint film after spraying, but also can ensure the transparency and non-collapse of the paint film, has the characteristics of good transparency, collapse resistance, good filling property, easiness in polishing and the like, and is suitable for the coating requirements of different furniture and wooden products, especially high-grade mirror surface sealing effect.

The invention provides an inner and outer plastic wrapping prefabricated underground barn. The inner and outer plastic wrapping prefabricated underground barn comprises a barn bottom, multiple prefabricated barn wallboards, a barn top and multifunctional columns. The barn wallboards are of overall structures formed by inner plastic plates, outer plastic plates and concrete plates between the inner plastic plates and the outer plastic plates, connecting devices are arranged on the peripheries of the barn wallboards, and the barn wallboards can be connected with the adjacent barn wallboards and the multifunctional columns through the connecting devices. The multifunctional columns are wrapped by plastic plates, the barn wallboards can be positioned, the depth of the portions, anchored into soil, of the multifunctional columns is larger than the depth of the barn bottom, and the multifunctional columns are main force bearing components for bearing soil pressure and grain side pressure and resisting buoyancy. The barn is characterized in that the multifunctional columns are divided into multiple segments from top to bottom, a first barn wallboard layer is arranged on the inner side of the first section of the uppermost layer, a second barn wallboard layer is arranged on the inner side of the second section till the lowest barn wallboard layer by means of the similar arrangement mode, and then the assembled underground barn structure is formed.