33results about How to "Strong waterproof" patented technology

Provided is a foundation pit bracing water stopping structure with a support pile and a three-axis stirring pile arranged in a cased drilling manner. The support pile is constructed on the outer side of a foundation pit; the stirring pile is constructed in a support pile area in a three-axis stirring manner; and the support pile directly cuts a pile body on the three-axis stirring pile for construction, and the whole bracing water stopping structure is formed. The three-axis stirring pile is large in power, and can perform stirring in strong-weathered rock and the above stratum. Compared with a conventional small diameter cement stirring pile, the beneficial effects of being small in number of lap joints, good in water stopping effect, high in construction efficiency, high in stratum adaptability and the like are achieved; and compared with a jet grouting pile, the beneficial effects that the water stopping effect is good, and price is low are achieved. According to the foundation pit bracing water stopping structure with the support pile and the three-axis stirring pile arranged in the cased drilling manner, the support pile and the three-axis stirring pile are combined together, construction is performed in the manner that the support pile and the three-axis stirring pile arranged in the cased drilling manner, the stratum condition can be improved, the problem of hole collapse of the support pile is effectively solved, a water stopping effect better than that of the conventional stirring pile and the jet grouting pile can also be achieved, meanwhile the occupied space of a supporting structure is saved, and the water stopping capacity of an existing pile-in-row bracing water stopping structure is enhanced.

The invention relates to the preparation technology of medicines and mainly provides a method for coating gastralgia tablets. In the method for coating gastralgia tablets, the coating powder for coating the gastralgia tablets comprises the following ingredients in the mass percent: 30-40 of hydroxypropyl methylcellulose, 8-12 of PEG-600, 15-25 of S-630, 2-5 of silicon powder, 10-15 of talcum powder and 15-25 of iron oxide red. The method for coating gastralgia tablets comprises the following steps: directly mixing the powdered ingredients according to the proportion; adding water the amount of which is 6 times of that of the mixture and being milled for two times by an emulsifying colloid mill to prepare uniform emulsion; and then, coating the tablets by a spraying film coating method. Each coated film tablet has uniform color on the surface, has regular edges, has strong toughness and can achieve the requirements. The purposes of water resistance and cracking prevention can be achieved by an accelerating test.

The invention relates to the technical field of building construction, in particular to a multi-layer bonding composite three-dimensional fabric foundation pit waterproof curtain supporting structureand a construction method thereof. The multi-layer bonding composite three-dimensional fabric foundation pit waterproof curtain supporting structure comprises a plurality of cast-in-situ bored piles and foundation pit connecting parts arranged among the cast-in-situ bored piles and used for connecting the cast-in-situ bored piles; the plurality of cast-in-situ bored piles are uniformly arranged atintervals; and each foundation pit connecting part comprises a strip-shaped foundation trench and a reinforcement cage arranged in the strip-shaped foundation trench, and a plurality of layers of composite three-dimensional fabrics are horizontally arranged in the reinforcement cage; The piles are connected into a whole through the composite three-dimensional fabrics and reinforced concrete, thestrength is improved, and the water stop performance is enhanced; the water stopping capability is improved by about 30%; and the supporting strength of the cast-in-situ bored piles is improved by 15%-20%; Compared with a large-volume concrete structure, the used composite three-dimensional fabric has the advantages that the use amount of concrete is saved, the construction cost is reduced by about 10%, and the environment is improved; and epoxy asphalt is used as an adhesive of each layer of three-dimensional fabric, so that the composite three-dimensional fabric is endowed with relatively strong water stop performance and bonding stability.

The invention provides a grooving reinforcing structure for an ultra-deep underground diaphragm wall in a coastal reclamation area and a construction method thereof. The structure comprises an upper reinforcing structure within the range of 30m and a lower reinforcing structure within the range of 30m or below. The upper reinforcing structure is reinforced and formed through a three-axis mixing pile, the quality is good, and a good reinforcing and water stopping effect is achieved. Within the range of 30m or below, due to the fact that the water and soil pressure of the coastal reclamation area is large, the reinforcing effect cannot be guaranteed through a single groove wall reinforcing manner, a high-pressure jet grouting pile is adopted for reinforcing firstly, and then the defects possibly existing in the high-pressure jet grouting pile are overcome through sleeve valve grouting. The grooving reinforcing structure combines the advantages of the three-axis mixing pile, the high-pressure jet grouting pile and sleeve valve pipe grouting, a good groove wall reinforcing effect can be achieved during underground diaphragm wall construction, the grooving reinforcing structure is particularly suitable for grooving reinforcing of the ultra-deep underground diaphragm wall in the coastal reclamation area, and the groove wall reinforcing method is safe, effective, economical and reasonable.

The invention discloses an active protection method for eliminating the influence of stratum settlement on an existing building, and belongs to the technical field of engineering construction protection. The active protection method comprises the following steps that 1, a protection range which is not affected by stratum settlement around the building needing to be protected is determined; 2, a circle of vertical drill holes are constructed at intervals near the critical position of the protected range around the protected building; 3, grooves are formed between the adjacent vertical drill holes in a milling manner, and milling groove sections and protective layer groove bodies are formed; 4, replacing and filling are carried out on slurry in the grooves from bottom to top by adopting a ductile waterproof material to form replacing and filling sections; and 5, after the ductile waterproof material is solidified and formed, end-to-end connection is carried out, and a circle of active protection layer with high ductile performance and high waterproof performance is formed near the range of a excavation influence area of a newly-built project. According to the method, the building can be prevented from being influenced by the surrounding stratum settlement, and the influence of additional stress generated by the stratum settlement and the uneven settlement on the building is prevented. If the technology is adopted around a newly-excavated foundation pit, the influence of the stratum settlement caused by excavation on the surrounding building can be reduced, and therefore the active protection effect on the existing building is achieved.

In combination with frost heaving and thaw collapse diseases of railroad beds in seasonal frozen soil areas in China, a railroad bed freezing injury treatment device capable of releasing frost heavingforce step by step in a vertical partition mode is provided. The device is composed of a reinforced concrete supporting box body, a plurality of reinforced concrete movable panels, a low-friction-coefficient isolation layer, a spring set, an embedded sleeve with a thread, a guide rod with a thread, an embedded sleeve and a rubber protection layer. The panel of the device is designed in a layeringand blocking mode, the number of blocks can be flexibly determined according to specific use conditions, the panel block design can release frost heaving force in a blocking mode in the soil body freezing process to enable springs to store energy, and when the soil body melts, the energy storage springs can push movable plates at the corresponding melting positions to move outwards to extrude thesoil body, and the roadbed rigidity is improved; the subgrade thaw collapse amount is reduced, the improvement effect is more obvious, the conditions that the whole panel inclines, so that the devicefails, frost heaving force is not released in time and the like are avoided, and the working performance and reliability of the device are improved.

The invention discloses a grouting foundation structure. The grouting foundation structure comprises a grouting pipe body, wherein an anchoring pipe is arranged in the grouting pipe body; the top part of the anchoring pipe extends out of the outer side surface of the top of the grouting pipe body; the bottom of the anchoring pipe penetrates through a connecting pipe; the connecting pipe is transversely arranged on the grouting pipe body, and the connecting pipe extends out of the two outer side surfaces of the grouting pipe body; a left supporting member and a right supporting member are vertically arranged on the connecting pipe respectively; the bottoms of the left supporting member and the right supporting member penetrate through the bottom of the grouting pipe body; a bottom protecting plate is arranged at the bottom of the grouting pipe body; the bottom protecting plate and the grouting pipe body are connected detachably. According to the grouting foundation structure, the frictional force between the grouting pipe and an anchoring rod hole is effectively increased, so that the effect of preventing the grouting pipe being ejected outside by pressure is realized, strong reinforcing performance is realized, the construction cost is reduced correspondingly, the water sealing effect is very strong, the strength of the foundation is higher, and the mixing mode of the grout is easy to control.

The invention relates to a construction method for prefabricated assembly of an irrigation channel and a cast-in-place concrete coping. The construction method comprises the steps that 1, an excavator is used for excavation at a designed position, during excavation, a soil loosening device arranged at the front end of a chassis of the excavator is used for scarifying pre-excavated groove soil, and then a U-shaped groove foundation pit is easily excavated in cooperation with a U-shaped excavator bucket; and 2, a cushion layer is arranged after the bottom of a U-shaped groove is compacted, the cushion layer is laid between soil bodies through concrete, and a polytetrafluoroethylene coating is sprayed to the upper portion of the cushion layer. The construction method has the beneficial effects that the groove can be formed at a time under the construction condition of hard soil frozen soil, the slope surface is smooth and flat, the slope top is straight and attractive, and manual finishing is not needed; the prefabricated U-shaped groove can be produced through an assembly line, and the production efficiency is high; the on-site construction workload is reduced; the requirement for hoisting precision is reduced, and the construction difficulty is lowered; and the problems that a connecting gap of the prefabricated U-shaped groove is permeable, a traditional concrete coping and a concrete channel are weak in connecting strength, and the coping is prone to falling off are solved.

The invention discloses a foundation pit lock pile water stop construction method, and relates to the technical field of lock pile construction. The foundation pit lock pile water stop construction method specifically comprises the following steps that firstly, the position where a lock pile needs to be built is detected, various data of the position are measured, and according to the data and theexisting standard, the lock pile is poured; and the strength of the lock pile is improved. According to the foundation pit lock pile water stop construction method, the surrounding of the position where the lock pile needs to be built is subjected to exploration detection, when the lock pile is poured, and after the lock pile is poured, effective and portable water stop can be carried out, the water stop effect is high, the phenomenon that due to involvement of water, the poured lock pile cannot be used is greatly avoided, a worker can more conveniently work, meanwhile, fewer faults appear inthe engineering, use cost is reduced, use by a user is facilitated, and the problems that at present, an existing foundation pit lock pile waterstop construction method is complex and poor in practicability are solved.