38results about How to "Large processing depth" patented technology

The invention in a technical sphere of soft soil ground treatment in geotechnical engineering relates to a soil ground treatment method in the areas along the sea, the river and the lake. The invention combines a vacuum drainage, a compaction via vibration supercharging, and a compaction via dynamic consolidation supercharging, wherein a higher kinetic head gradient which is consisted of a positive pressure of excess pore water by vibration excitation and a vacuum negative pressure firstly discharges the water in soil and increases the water content in the soil, thereby compacting the soil to a certain extend, and then the dynamic consolidation action is proceeded to improve the excess pore water pressure and form the higher kinetic head gradient thereby draining and compacting the soil. All the steps are proceeded many times to eliminate the settling of the worked deep layer soft soil and to improve surface consolidation degree, intensity, and stiffness until up the design requirement. Compared with the present method, the invention not only has a short time for a project, lower manufacturing cost and settling after work, and a good effect of consolidating and compacting, but also is extensive used in the soft soil ground treatment of various projects in the area along the sea, the river, or the like.

The invention relates to a cement mixing pile with a stiffness core capable of draining and pre-pressing firstly and then grouting as well as a construction method thereof. The cement mixing pile comprises a vertical draining and grouting pipe arranged in the cement mixing pile, and more than one dual-layer telescopic horizontal draining and grouting pipes arranged at intervals on the vertical draining and grouting pipe, wherein a bulk solid pile with the stiffness core is arranged in the cement mixing pile, and the length of a horizontal draining and grouting pipe in an outer layer is smaller than that of the horizontal draining and grouting pipe in an inner layer when the horizontal draining and grouting pipe is in a telescopic state. In a construction process, an upper drawn steel immersed tube is vibrated, and the horizontal draining and grouting pipe departs from the steel immersed tube and is stretched to form a horizontal draining body. According to the invention, the advantages of drainage consolidation and composite foundation methods are integrated, and foundations can be dynamically reinforced according to the construction period and the settlement requirements on the premise of lower construction cost while the bearing capacity and the processing depth of the cement mixing pile are increased.

The invention discloses an FRP pipe and thick-wall steel pipe compounding hollow recycled concrete pile which is mainly formed by an FRP pipe, a round reinforcement cage framework, a thick-wall steel pipe and recycled concrete. The round reinforcement cage framework and the thick-wall steel pipe are arranged in the FRP pipe, and the round reinforcement cage framework, the thick-wall steel pipe and the FRP pipe are arranged concentrically. The recycled concrete is poured in annular space between the FRP pipe and the thick-wall steel pipe. The bearing capacity and deformation resisting capacity of the single pile can be greatly improved through the built-in thick-wall steel pipe. The wrapping FRP pipe can effectively prevent a pile body from being corroded, and the durability of the pile body is improved. Meanwhile, the FRP pipe and spiral stirrups are combined to restrain the inner recycled concrete, and the bearing force of the compounding pile is further improved. Waste concrete is fully utilized as recycled aggregate, and application and popularization of the recycled concrete in building foundation engineering are facilitated. In a word, the compounding hollow recycled concrete pile has the advantages of being good in pile forming quality, high in bearing force, good in deformation resisting capacity and durability, small in influence on the environment, high in construction speed and the like.

The invention relates to a small tubular pile reinforcement system for a weak base of a tunnel and a method for constructing the small tubular pile reinforcement system. Foundations of a tunnel portal at a bridge and tunnel joint directly extend into terrains such as deep valleys in a direct transition manner, the terrains correspond to a bridge, and treatment on the foundations of the soft base at the bridge and tunnel joint has important significance on the stability of integral construction structures at a bridge and tunnel transition position. The small tubular pile reinforcement system is characterized in that a concrete supporting plate is arranged below a tunnel inverted arch structure of the tunnel portal at the bridge and tunnel joint, and steel tubular piles which are arrayed are arranged in the foundations below the concrete supporting plate; the depths of the steel tubular piles are gradually inwardly reduced from the portal, and the steel tubular piles are stepped along the directions of lines and are arranged are arranged in a quincuncial manner in planes. The small tubular pile reinforcement system and the method have the advantages that the small tubular pile reinforcement system is large in foundation treatment depth and small in treatment area, the bearing capacity of the weak foundations can be obviously improved after the small tubular pile reinforcement system is constructed, settlement and deformation of the foundations can be controlled, and normal use of the structures can be guaranteed.

The invention discloses a PVC pipe and thick wall steel tube composite hollow recycled concrete pile, which is mainly prepared from PVC pipes, a round reinforcement cage framework, thick wall steel tubes and recycled concrete, wherein the round reinforcement cage framework and the thick wall steel tubes are arranged in PVC pipes, and the three are concentrically arranged; recycled concrete is poured into the PVC pipes and the thick wall steel tubes; the built-in thick wall steel tubes are capable of improving single-pile bearing capacity and non-deformability by a large margin; the externally covered PVC pipes are capable of effectively preventing pile bodies from being corroded and improving pipe body durability; at the same time, the recycled concrete inside can be jointed restrained by the PVC pipes and spiral stirrups, thus further enhancing composite pile bearing capacity; and waste concrete can be used as recycled aggregate, thus being favor of popularization and application of recycled concrete in building foundation engineering. In short, the PVC pipe and thick wall steel tube composite hollow recycled concrete pile has the advantages of good pile formation quality, high bearing capability, good non-deformability, good durability, small environment influence, quick construction speed and the like.

The invention provides a soft soil foundation treatment method by three-dimensional drainage power pre-pressing consolidation, comprising the following steps: (1) ascertaining the layering status and the thickness of a foundation compound soil layer to be processed; (2) inserting a drainage tube well into the soil layer until the drainage tube well reaches at about at least of 2.5m under the baseboard of the soft soil layer; (3) performing overload compound prepressing on the soil layer on earth surface so that pore water of the soft soil layer continuously permeates towards an upper layer and a lower layer with good permeability and the drainage tube well; and (4) discharging water outside the soil layer through a drainage pipe. The major innovation on the existing single-side drainage consolidation, vacuum well point dewatering and dynamic consolidation, and a dewatering prepressing method is a novel power drainage consolidation method with large, fast and effective processing depth; and the treatment method has good application prospect on soft soil foundation treatment of deltas, estuaries and coastal areas with similar sedimentary characteristics.

The invention discloses a treatment device and method for strengthening of the removal effect on hardly degradable substances in printing and dyeing wastewater. The printing and dyeing wastewater to be treated sequentially passes through an anaerobic UASB tank, a mixing tank, an internal circulating BAF tank and an upward flowing type BAF tank, the anaerobic tank adopts anaerobic granular sludge dominated by mesophile microorganisms, the internal circulating BAF tank operates in an upward flowing mode, and the packing surface is acclimatized and enriched with shortcut denitrifying bacteria and microorganisms, and the upward flowing type BAF tank adopts an embedded and fixed denitrifying bacterium and microorganism PEG carrier as a packing. The treatment device combines with the anaerobic granular sludge, a biological membrane colonization packing and an embedded microbial carrier technology, makes full use of the characteristics of anaerobic UASB and BAF devices, can avoid the phenomenon that microorganisms are impacted by the water, and also increases the wastewater treatment depth. The treatment device strengthens the removal effect on the hardly degradable substances in the printing and dyeing wastewater, the wastewater chroma removal rate of a UASB reaches 80%, the COD and BOD removal rate of a BAF reaches 78%, and treatment device has the advantages of being stable in treatment effect, low in sludge production volume, simple in operation and management and the like and has a popularization value.

The invention discloses a hydraulic rotating jet flow blockage remover, which comprises a screw rod, wherein the middle part of the screw rod is a threaded section, left-hand screw threads and right-hand screw threads are arranged on the threaded section, an upper centralizer is also arranged on the screw rod, the upper centralizer is positioned at the upper side of the threaded section, a case is arranged at the outer sides of the threaded section and the upper centralizer in a sleeving way, the upper end of the case is connected with a short joint, the lower end of the case is connected with a connecting pipe, the lower end of the connecting pipe is connected with a connecting end cover, a base is arranged in the connecting pipe, two pins are fixedly arranged on the base, and are respectively inserted into the left-hand screw threads and the right-hand screw threads, in addition, the position difference of the two pins is 1.5 thread pitches, the bottom of the screw rod is connected with a rotating spray head, and a lower centralizer is arranged between the rotating spray head and the connecting end cover. The hydraulic rotating jet flow blockage remover has the advantages that the structure is simple, in addition, the jet hole section of the whole oil layer can be thoroughly cleaned, the cleaning quality is high, no damage occurs, the cleaning speed is high, and the efficiency is high.

The invention discloses a comprehensive treatment method of a soft foundation. The comprehensive treatment method comprises the following steps of firstly, designing and constructing vibro-replacement stone columns; secondly, designing, distributing and precipitating a drainage system for vacuum well points among the columns; thirdly, designing and constructing a broken stone hardcore; fourthly, designing and constructing low-energy dynamic consolidation; fifthly, leveling the broken stone hardcore. The comprehensive treatment method disclosed by the invention is a novel comprehensive treatment method of the soft foundation, which is formed by organically combining four foundation treatment techniques of vibro-replacement stone column, vacuum well point precipitation, a hardcore method and dynamic consolidation on the basis of the characteristics of a soft soil layer, and is great in treatment depth and improvement amplitude of foundation bearing capacity, and has technical and economic advantages of great improvement amplitude of the foundation bearing capacity, low construction cost and good treatment effect.

The invention discloses a medicine feeding device characterized in that the medicine feeding device is provided with a medicine storing cylinder; the medicine storing cylinder is in a cavity structure; the medicine storing cylinder is a soft housing; one end of the medicine storing cylinder is enclosed and the other end is provided with a projected round medicine discharging port; an external thread is formed on the outer wall of the medicine discharging port; an annular sealing pad is mounted under the medicine discharging port; a cover lid is mounted on the medicine discharging port; the medicine feeding device has a connection part and a medicine discharging nozzle; the medicine feeding device is in a cavity structure; an internal thread matching with the external thread is formed in the inner wall of the connection part; and the medicine discharging nozzle is flat and inclined and an inclined included angle (Alpha) is 0 to 40 degrees. The medicine feeding device is simply structured; medicine feeding devices of various structures can be suitable for various infected parts; cross infection can be prevented; and medicine exchanging time can be reduced and union of infected parts can be accelerated.

The invention relates to the field of foundation treatment, in particular to a method for treating a collapsible loess foundation by combining a deep pre-soaking method with a shallow compaction method, and effectively solves the problems of limited treatment depth, longer construction period, lower bearing capacity after treatment and the like of the pre-soaking method. The method includes the specific operation steps that the treatment depth and the treatment range for eliminating the loess foundation collapsibility are determined; an arrangement form and hole positions of piles in the processing range are determined to form pile holes; the pile holes are used for sequentially carrying out deep-layer water soaking and drainage consolidation procedures; cement paste is injected into the pile holes, steel bars are inserted, and rigid piles are formed; within the treatment range, construction is conducted through the shallow soil body compaction method, and flexible piles are formed; and a mattress layer is laid on the upper portion of the foundation, and the rigid piles and the flexible piles are combined to form a multi-pile type composite foundation. According to the method for treating the collapsible loess foundation by combining the deep pre-soaking method with the shallow compaction method, the deep pre-soaking method is combined with the shallow compaction method, so that the deep collapsible loess foundation can be effectively and comprehensively treated, and the bearing capacity of the foundation is improved.

The invention discloses a micro steel pipe pile-sinking pipe sand gravel pile combined foundation reinforcement construction method and structure. The combined foundation reinforcement structure comprises a plurality of reinforcement holes. Each of the reinforcement holes is internally provided with a micro steel pipe, and the micro steel pipes and the reinforcement holes are coaxially arranged. Annular sand gravel piles are arranged between the inner walls of the reinforcement holes and the outer walls of the micro steel pipes. A plurality of mortar outlet holes are formed in the pipe wall ofeach micro steel pipe. After cement mortar is injected into the micro steel pipes through grouting pipes, the cement mortar can penetrate into gaps of the annular sand gravel piles through the mortaroutlet holes. The micro steel pipes and the cement mortar therein solidify to form steel pipe piles, and the sand gravel piles outside the micro steel pipes are solidified into cement sand gravel piles through the cement mortar penetrating into the sand gravel gaps. The cement sand gravel piles and the steel pipe piles wrapped with the cement sand gravel piles jointly form combined reinforcementpiles. It can be seen that a combined reinforcement body of rigid piles and flexible piles can be formed, foundation soil can be compacted so that the characters of the foundation soil are significantly improved, the bearing capacity of the reinforcement body can be significantly improved, and the reinforcement effect is enhanced.

The invention discloses an ozone oxidization-precipitation-sand filtering-iron powder filtering treatment process for alkali-minimization wastewater in the printing and dyeing industry. The treatment process comprises the following steps: (1) pretreating the alkali-minimization wastewater, and recovering terephthalic acid and a salt thereof; (2)introducing ozone into the pretreated wastewater to perform oxidization treatment; (3) adding a soluble ferric salt into sewage treated by ozone oxidization to perform precipitation treatment; (4) introducing the precipitated wastewater into sand filtering equipment to perform filtering treatment; (5) introducing the sand-filtered wastewater into iron powder filtering equipment to obtain purified water. By adopting the treatment process, ketones, alcohols, organic amine, benzene series, thiophene and a part of organic esters in water can be removed effectively. After continuous running for half a year, the COD (Chemical Oxygen Demand) removal rate is kept at 96 to 99 percent, the chromaticity removal rate is 97 to 99.9 percent, and the amine-nitrogen removal rate is kept at 93 to 98 percent.