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248results about How to "Long construction period" patented technology

Grouped second liner construction method for large cross-section tunnel

The invention discloses a grouped second liner construction method for a large cross-section tunnel. A whole toroidal second liner is constructed after being divided into 6 parts. The method comprises the following steps: 1), pouring and backfilling an inverted arch of a left lower hole; 2), pouring and backfilling an inverted arch of a right lower hole; 3), pouring a side wall second liner of the left lower hole through a lower hole trolley; 4), moving the lower hole trolley to the right lower hole to pour a side wall second liner of the right lower hole; 5), erecting a bracket in the right lower hole, assembling a right upper hole trolley, and pouring a right upper arch second liner; 6), erecting a bracket in the left lower hole, assembling a left upper hole trolley, and pouring a left upper arch second liner. According to the grouped second liner construction method, a relatively large cross section is divided into a plurality of small cross sections to carry out construction, although the construction procedures the time limit for a product are slightly increased in comparison with those of a traditional two-step construction method, the construction risk is yet reduced to a great extent, the construction safety guarantee coefficient is increased, an extremely important guide value is provided for the tunnel constructed with a CRD (center cross diaphragm) method in certain special urban environment conditions, the construction is smoothly completed on the premise of guaranteeing safety, and remarkable social benefits are achieved.
Owner:RANKEN RAILWAY CONSTR GROUP

FTTH optical access network architecture based on ''three-network integration''

An FTTH optical access network architecture based on ''three-network integration'' belongs to the application field of multi-network fusion technology. The FTTH optical access network architecture comprises the following components: an accessed telecommunication public network, an accessed Internet, wireless transmission, a broadcast television access network, the existing local area network fireproof wall of the enterprise, the existing local area network core switch of the enterprise, a media gateway, a three-network integrated first-core switch session boundary controller, the fireproof wall, the switch, a NGN soft switching system, a narrowband charger, a network management system, a first database server, an intelligent service gateway, a gigabit Ethernet passive optical network GPON, an optical fiber line terminal device EPON, an optical amplifying unit, an ONU, a digital monitoring system, a wideband charger, a security service gateway, a server, an optical splitter, an AP, an optical network terminal ONT, an optical network terminal with a wireless home gateway, an optical network terminal M3-2401, an integrated access device and an integrated service aceess plateform. The FTTH optical access network architecture of the invention has the advantages of multi-network fusion, high bandwidth, high stability, low input and high return.
Owner:BEIJING SHOUGANG CO LTD

Drilling, spraying, injection integral enlarging anchor rod construction method

ActiveCN101260669AImprove bearing capacityIncreases bearing capacity and also contributes to increased durability of the expanded body anchorBulkheads/pilesAnchoring boltsSlurryHigh pressure
The invention relates to an anchor rod construction method in a drilling, spraying and infusing integrated enlargement body; a single-pipe drilling, spraying and infusing aiguille equipped with a hydraulic controllable on-off auxiliary grouting hole and a long drillrig anchor rod driller which can implement the single-pipe high-speed spraying jet cutting technique are adopted to drill holes; when the drilled hole reaches a set depth, the aiguille is moved to a set position of an anchor root hole section; high-pressure clear water or grout is conveyed to the aiguille to produce a high-speed spraying jet cutting anchor hole sidewall and form an anchor root hole meeting the design need; after the operation of the anchor root hole enlargement is completed, the aiguille is lowered to the bottom of the anchor hole, then the aiguille is slowly retreated and the grout is continuously infused by the auxiliary grouting hole till the grouting of the anchor hole or the grouting replacement of the anchor hole is completed, then an anchorage cable body is lowered to the anchor hole with filled grouts to form the anchor rod of the enlargement body. The aim of the invention is to provide an anchor rod construction method in the drilling, spraying and infusing integrated enlargement body, which has high bearing capacity of the anchor rod, good durability, less construction equipment, simple technology, high efficiency, low cost and no pollution, and can carry out construction operation under the conditions of various stratums.
Owner:CHINA JINGYE ENG TECH CO LTD +1

Combined-type composite foundation with controllable rigidity piles, drainage materials and reinforced cushion

Disclosed is a combined-type composite foundation with controllable rigidity piles, drainage materials and a reinforced cushion. The reinforced cushion is laid on the surface of a soft soil foundation. The vertical drainage materials and the rigidity piles with caps are arranged in the foundation. Grouting tubes are installed between pile tops and the pile caps to form a controllable supporting system. When grouting is not conducted on the grouting tubes, drainage consolidation is conducted through the soft soil foundation under the effect of an upper load so as to improve the bearing capacity. The bearing effect of the rigidity piles is difficult to play due to the fact that the rigidity piles are stabbed into the grouting tubes. When the grouting tubes are grouted and after slurry is hardened, the pile caps, the slurry and the rigidity piles form a rigidity support, and the goal that the load is undertaken by the piles and soil together to reduce settlement is realized. Meanwhile, the reinforced cushion has the effects of restraining the horizontal displacement of the piles and the soil, limiting the local deformation of a dyke and a dam and the like. According to the composite foundation, the bearing force of the foundation soil can be given full play; the using amount of the rigidity piles is reduced; the stability of the foundation is improved; the post-construction settlement and differential settlement are reduced; the construction period is shortened; and the composite foundation can be applied to projects such as highways, railways and earth-rock dams.
Owner:WUYI UNIV

Double-layer roller-way kiln provided with lifting device

The invention discloses a double-layer roller-way kiln provided with a lifting device. The double-layer roller kiln comprises a double-layer roller-way device and the lifting device, the double-layer roller-way device comprises an upper layer kiln way and a lower layer kiln way, the upper layer kiln way is provided with a preheating chamber and a firing chamber, the lower layer kiln way is provided with a firing chamber and a cooling chamber, and the lifting device is arranged beside the firing chambers; the lifting platform comprises a fixing frame, a lifting platform, a roller platform located in the lifting platform and a lifting mechanism which drives the lifting platform to ascend and descend; the lifting platform comprises a lifting plate, a load-bearing plate and support plates which are located between the lifting plate and the load-bearing plate, and the roller platform comprises a rack, a chain wheel transmission device and roller rods; the lifting mechanism comprises a motor, a hauling cable and a balance weight. According to the double-layer roller-way kiln, the structure is simple, the operation is convenient, the manufacture and use can be conducted, the occupied area is small, and the management and maintenance are facilitated; meanwhile, the energy utilization ratio is high, the cost is saved, and the kiln is suitable for being used and popularized.
Owner:绥阳县华夏陶瓷有限责任公司

Pre-stressing reinforced and widened bridge structure

The invention discloses a pre-stressing reinforced and widened bridge structure, which comprises an old bridge, a widening beam I and a widening beam II, wherein the widening beam I and the widening beam II are parallelly and respectively positioned on the two sides of the old bridge and are rigidly connected in the transverse direction with the old bridge; the two ends of a pre-stressing rope or a pre-stressing rib are transversely and respectively arranged outward and are upwards inclined, extended and anchored on the widening beam I and the widening beam II; and the pre-stressing rope or the pre-stressing rib is acted on the old bridge through a steering device. While being widened, the old bridge can be reinforced by the structure, the stress between the newly added part and the old bridge is balanced, the occurrence and the development of defects of the old bridge can be effectively inhibited, the structure and the construction of the bridge are relatively simple, the structure of the old bridge is not damaged, the structural performance is reliable after the old bridge is widened and reinforced, the construction period is relatively short, the influence on road traffic is relatively small, the damage to natural environment and the adverse influence on society when the old bridge is demolished are avoided, and very good comprehensive technical, economic and social benefits are achieved.
Owner:CHONGQING JIAOTONG UNIVERSITY

Anti-skid colored paving material for roads, and preparation method and construction process of paving material

The invention provides an anti-skid colored paving material for roads, and a preparation method and a construction process of the paving materials. The anti-skid colored paving material for roads comprises the following components in parts by weight: 40-50 parts of polymethyl methacrylate resin, 10-20 parts of calcium carbonate, 1-5 parts of nano silicon dioxide, 2-5 parts of inorganic pigment, 5-15 parts of bauxite and 5-8 parts of quartz sand. The anti-skid colored paving material for roads provided by the invention has a shortened hardening time, and the bauxite with excellent acid resistance, alkali resistance and chemical resistance is used as the main material, so that an original working procedure of additional removal of anti-skid aggregates can be omitted, and the problems that the aggregate easily peels off from the paving material and uniform spreading is difficult due to uneven aggregate shape existed in the additional removal of the aggregates can be solved. Pre-mixing iscarried out for coating the aggregate with the quartz sand, the aggregate does not fall off easily, the drying time is faster, the traffic condition can be reached only in one hour, and the traffic pressure is greatly reduced.
Owner:TIANJIN BAISITE NEW MATERIAL TECH

Simple reinforcing method of vacuum electroosmosis combined prepressing soft soil foundation

The invention discloses a simple reinforcing method of a vacuum electroosmosis combined prepressing soft soil foundation, and the method is used for overcoming the poor characteristics of high water content, high compressibility and low shearing strength of a sludge soft clay foundation. The simple reinforcing method comprises the following steps of: firstly, laying a geotechnical cloth or knitted mesh on the surface of a foundation to be processed; then arranging novel longitudinal drainage boards with different lengths, setting a transverse closed drainage system, hermetically connecting longitudinal and transverse systems, lapping conduction wire systems; laying a vacuum sealing film to ensure that the system does not leak air, and pumping water and gas passing through the novel longitudinal drainage boards and the transverse drainage system by using a vacuum pump; connecting the conduction wire systems to the positive pole and negative pole of a power supply, and pumping the water and the gas passing through the novel longitudinal drainage systems and the transverse drainage system by adopting a vacuum electroosmosis combined method; and finally, removing the sealing film, recovering the transverse drainage system and the conduction wire systems, and rolling and leveling ground.
Owner:WENZHOU UNIVERSITY

Mooring positioning device for open caisson and construction method of mooring positioning device

The invention relates to the field of mooring positioning technology and discloses a mooring positioning device for an open caisson and a construction method of the mooring positioning device. The device comprises front positioning structures, rear positioning structures, left side anchoring ingots, right side anchoring ingots, fair leads, mooring ropes and mooring rope take-up devices. The front positioning structures and the rear positioning structures are arranged on the upstream position and the downstream position of the open caisson, and the left side anchoring ingots and the right side anchoring ingots are arranged on the left side and the right side which are perpendicular to the water flow direction; the fair leads and the mooring rope take-up devices are arranged on the open caisson in a one-to-one correspondence mode; one side anchoring ingot is connected with one mooring rope take-up device through one set of mooring ropes via one fair lead, one positioning structure is connected with one mooring rope take-up device through one set of mooring ropes via one fair lead, and acting points of the mooring ropes are located at riverbed positions of the positioning structures. The device is a rigid positioning system with a few mooring ropes, the positioning structures and the side anchoring ingots correspond to top positioning devices of the open caisson one to one through the mooring ropes so that definite stressing can be achieved, and the positioning structures are stressed on the riverbed surface. The device is free of deepwater influences, easy to construct, capable of accurately positioning the open caisson and high in work efficiency.
Owner:CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD

Continuous mixing type water plugging technique

The invention discloses a continuous mixing type water plugging technique, which comprises the following steps of: a, taking and mixing 2-10 parts of main-body plugging agent and 100 parts of clear water so as to form a main-body plugging agent liquid, and then injecting the main-body plugging agent liquid into a stratum; b, enabling the main-body plugging agent liquid in a shaft to enter into a reservoir stratum of an oil well by using clear water in an overhead mode; c, closing the well to wait for coagulation, namely, the main-body plugging agent liquid is formed into high-viscosity elastic gel after being reacted for 3-24 hours at a temperature of 30-90 DEG C, and the high-viscosity elastic gel blocks micro fractures and water passageways for matrixes in the reservoir stratum, thereby realizing the effectively blocking on the water-logging oil well; and d, opening the well and carrying out pumping, carrying out pumping on the oil well according to standard oil well pumping procedures and putting the oil well into operation. Compared with the prior art, the technique disclosed by the invention solves the technical problem that in the conventional water plugging technologies, due to the injection of a large mount of plugging agents, phenomena such as poor blocking effect and short period of validity are easy to cause; meanwhile, the technique also solves the technical problem that the existing single injection type water plugging process is long in construction period, so that the manpower and equipment burdens, especially the treatment of residual liquid after the construction is completed, are increased.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Simple floating heat exchanger pressure test tool

A simple floating heat exchanger pressure test tool comprises a heat exchanger barrel, a fixed tube plate, a floating tube plate and a heat exchange tube bundle. A tube box side flange and an outer head cover side flange are welded at two ends of the heat exchanger barrel respectively, the fixed tube plate and the floating tube plate are welded into an integral structure through the heat exchange tube bundle, the outer head cover side flange and the tube box side flange are matched to fix the fixed tube plate at one end of the heat exchanger barrel, the other end of the heat exchanger barrel is provided with a pressure test barrel section with the floating tube plate fixed in the section, the pressure test barrel section achieves connection of the heat exchanger barrel and the pressure test barrel section by means of matching of the tool flange arranged on the pressure test barrel section and the outer head cover side flange, a sealing gasket matched with an annular cutting groove formed in the inner surface of the pressure test barrel section is arranged on the floating tube plate, and an air hole applying pressing force on the sealing gasket is formed in the pressure test barrel section. The test tool avoids traditional welding connection of the pressure test barrel section and the floating tube plate, facilitates disassembly after pressure test and is good in sealing effect in the pressure test process.
Owner:HENAN UNIV OF SCI & TECH

Horizontal well one-time multi-section open-hole gravel pack sand-proof well completion pipe string and method

The invention discloses a horizontal well one-time multi-section open-hole gravel pack sand-proof well completion pipe string and a method. The horizontal well one-time multi-section open-hole gravel pack sand-proof well completion pipe string comprises a well completion pipe string body and a pack sand-proof service pipe string body, wherein the pack sand-proof service pipe string body is arranged in the well completion pipe string body; the pack sand-proof service pipe string body comprises a drilling-free plug stage collar, a packing sliding sleeve assembly and sand filtering tubes, and the drilling-free plug stage collar, the packing sliding sleeve assembly and the sand filtering tubes are sequentially connected from front to back; the pack sand-proof service pipe string body comprises a liquid separation sealing device, a double-layer pipe, an upper positioning device, a packing assembly, a circulation assembly, a lower positioning device, a closing tool and an opening tool which are sequentially connected from the front to the back. At least two sand filtering tubes are arranged, and a heat-sensitive compensator and an open-hole packer are connected between every two sand filtering tubes. The tail end of the well completion pipe string is connected with a well washing valve. One-time multi-section packing can be achieved, infinite series packing can be achieved, segmented packing is achieved outside a pipe in a real sense for the first time, and the packing effect is improved. Horizontal section segmentation is completed, and requirements of post-selective production, segmented steam injection and other measures can be met.
Owner:CHINA PETROLEUM & CHEM CORP +1

Constructing method for high-rise building elevator shaft through elevating type safety protection steel platform

The invention discloses a constructing method for a high-rise building elevator shaft through an elevating type safety protection steel platform, comprising the steps of: firstly, manufacturing a steel platform matched with the size of an elevator shaft, then installing the steel platform inside the bottom layer of the elevator shaft, carrying out elevator shaft construction operation by constructors standing on the steel platform, elevating the steel platform layer by layer after the construction on the current operation layer is completed until the steel platform is elevated to the elevator shaft of the upper floor to facilitate the elevator shaft construction operation, sealing the lower elevator shaft after the steel platform is elevated, and repeating the steps until the elevator shaft construction on all the floors of the whole building is completed. The construction method is featured by safety, simplicity and convenience for operation, easiness for construction, obvious economic benefits and the like, has the greatest advantages of saving lease expense of raw materials and facilitating cost control, and is particularly suitable for high-rise buildings and multistoried buildings with longer construction periods.
Owner:THE THIRD CONSTR & ENG OF CCFED

Construction method of red sandstone roadbed

ActiveCN101831851AHigh linearity standardLarge amount of filling and cuttingRoadwaysArchitectural engineeringRed sandstone
The invention relates to a construction method of a red sandstone roadbed, which adopts special mechanical assembly. Aiming at the mechanics of the I type red sandstone roadbed and the II type red sandstone roadbed and the analysis of the road performance, a large-tonnage special compacting machine is used for rolling, wherein the rolling comprises the rolling, the crushing and the compactly extruding through a YZTY-22T pulling type cavel with the vibrating force of 45t, the rolling through a YZ32 ultra-large vibrating force vibrating road rolling machine, and the shocking and the reinforcing through a QCY360 (25KJ trilateral double wheels) shocking road rolling machine. The linear standard of the super highway is high and the work amount of filling and cutting is large, so that the design of wiring can not avoid a wider red sandstone zone and a mass of red sandstones have to be dug up during constructing. If the roadbed can not be filled with the red sandstones but the far-distant other materials, not only the construction period is delayed, but also the construction cost is high. Meanwhile, areas for borrowing and abandoning the soil are difficult to find, so that the existing construction mode can pollute the environment and bring much future troubles. The construction method well makes use of the spot red sandstones, reduces the construction cost, saves the resources, and is good for the civilized construction and the environment protection.
Owner:ANHUI ROAD & BRIDGE GRP +1
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