177results about How to "Simplify construction steps" patented technology

The invention discloses a carst region double-arch road tunnel construction method, which comprises the following steps; 1. carrying out construction preparation; 2. carrying out construction at channel openings; 3. adopting a three-pilot-tunnel method for constructing the channel inlet opening section, and adopting a step digging method for digging during the three-pilot-tunnel method construction; 4. adopting a middle-pilot-tunnel method for constructing the middle communication section of the channel, and adopting a full cross section method for digging during the middle-pilot-tunnel method construction; 5. adopting the three-pilot-tunnel method or the middle-pilot-tunnel method for constructing the channel outlet opening section, adopting the step digging method for digging when the middle-pilot-tunnel method is adopted for digging construction of the channel outlet opening section, and synchronously carrying out secondary lining construction from the front part to the back part in the digging construction process of the channel inlet opening section, the middle communication section of the channel and the channel outlet opening section. The invention has the advantages of reasonable design, simple and convenient construction, safe and reliable construction process, flexible construction mode, short construction period and greatly simplified construction steps, and effectively overcomes various defects during the traditional carst region double-arch road tunnel construction.

The invention discloses a long tunnel fast construction process. The tunnel construction method in the direction from the entrance to the exit and the tunnel construction method in the direction from the exit to the entrance are the same and each construction section is respectively constructed from back to front. The construction process is as follows: 1, excavating construction at an initial construction section, the process is as follows: performing advance geology forecast, determining the excavating construction method for the current construction section, excavating and primary supporting; 2, excavating construction at the next construction section; 3, repeating the step 2 for multiple times until the construction tunnel is through, wherein in the tunnel construction process, found water seepage areas are timely subjected to draining treatment, and the secondary lining construction is synchronously performed on the tunnel holes formed by excavating from front to back. The long tunnel fast construction method is reasonable in design, simple and convenient in construction, safe in the construction process, short in construction process and fast in construction progress, thus effectively solving the defects and shortcomings such as large equipment investment, long construction period and slow construction progress of the existing long tunnel construction.

The invention discloses a slope protection pile pouring and cable bolting construction method for a deep foundation pit. The method comprises the following steps of: 1, making preparations before construction; 2, pouring a slope protection pile, namely measuring, paying off, molding and constructing the poured slope protection pile, punching holes on the poured slope protection pile, binding and hoisting a steel reinforcement cage for molding the slope protection pile, pouring concrete into the poured slope protection pile and constructing a crown beam at the top end of the pile; and 3, excavating a foundation in a layered form and constructing anchor ropes on different rows, namely excavating a first-layer foundation, arranging a first row of anchor ropes, arranging a steel waist rail, arranging anchor heads of the anchor ropes, tensioning the anchor ropes and finishing excavating processes of different layers of foundations and arranging different rows of anchor ropes. The method has a reasonable design, simple construction steps, low investment cost, large support depth and good using effect, and solves the problems of complicated construction steps, high construction cost, inconvenience in control, easy damage to surrounding pipelines, roads, buildings and the like, large construction space and the like existing in the conventional double-row pile supporting method can be solved.

The invention belongs to the technical field of design and construction of tunnel and underground engineering and especially relates to a rock stratum underground excavation three-story subway station umbrella cover structure and a construction method thereof. The structure comprises a main arc structure and a reinforced concrete inverted arch. an underground two-story side wall and an underground three-story side wall are installed between the main arc structure and the reinforced concrete inverted arch. The main arc structure comprises an arch portion second lining middle segment and arch portion second lining side segments; the arch portion second lining side segments are positioned at two sides of the arch portion second lining middle segment; the reinforced concrete inverted arch comprises an inverted arch second lining middle segment and inverted arch second lining side segments; the top of the inverted arch second lining middle segment is provided with two bottom girders; the bottom of the arch portion second lining middle segment is provided with two top girders; steel-pipe columns are installed between the top girders and the bottom girders. The structure and the method of the invention is suitable for supporting structure and construction of weak rock stratum dug three-story subway station and large sections of underground space; the structure has good stability and increased construction efficiency.

The invention discloses a construction waste recycling and reusing process, which comprises the following steps of: 1, collecting waste concrete, waste mortar and waste brick slag; 2, smashing and screening, namely smashing and screening the collected waste concrete, the collected waste mortar and the collected waste brick slag to obtain regenerative rough aggregates and regenerative fine aggregates; and 3, preparing foam concrete, namely firstly preparing cement slurry, namely uniformly stirring concrete, water, the regenerative rough aggregates and the regenerative fine aggregates to obtain the cement slurry, and secondly adding a foam dilution solution, namely adding the foam dilution solution formed by uniformly mixing a foaming agent and water into the cement slurry, and uniformly stirring to obtain the foam concrete. The steps of the process are simple; the investment cost is low; the process is simple, feasible and high in operability; the waste concrete, the waste mortar and the waste brick slag can be effectively reused; the economical benefit is outstanding; the produced foam concrete material is high in heat preservation performance; and the problems that the construction waste is abandoned and stacked randomly and occupies the land, the waste of resources is severe, and the environment pollution is severe are solved.

The invention discloses an air foam slug flow driving process for the oil recovery of an oil field, comprising the following steps of: 1 determining type and proportion of the used foam liquid, slug volume ratio and on-site injection manner of the used air and the foam liquid during the air foam slug flow driving by an indoor test; and 2 carrying out the air foam liquid slug flow driving on site,wherein the oil flow driving process comprises the following steps of: preparation before the oil flow driving; slugging a pad fluid; slugging the air foam; alternatively injecting the air and foam liquid slug from a specially manufactured device to a target well for many times; and continuously carrying out the oil flow driving on the target well by a water or air injection method according to the dynamic change condition of the target well and a conventional oil displacement method after the injection of the air foam slug is finished. The invention has the advantages of reasonable design, simple and convenient construction steps, good use effect and convenience of realizing, can effectively solve various practical problems of poor water injection effect, difficult improvement on the water injection capability, poor oil flow driving efficiency and the like during the ultralow reservoir waterflooding.

The invention discloses a high rock-fill dam membrane anti-seepage body on a deep coverage layer and a construction method of the high rock-fill dam membrane anti-seepage body. The membrane anti-seepage body is composed of a concrete protection layer, a geomembrane anti-seepage layer, a flexibility cushion layer and a transition layer. The concrete protection layer is a cast-in-place fiber concrete layer for a reserved cross joint and a vertical joint and located on a surface layer to protect a geomembrane. The geomembrane anti-seepage layer is a two-cloth and one-membrane composite geomembrane and is located in the middle to play a role of preventing seepage. The flexibility cushion layer is a polyurethane pervious concrete layer and located at the bottom of the anti-seepage body to support the geomembrane and to transmit and disperse water loads. The rough granule transition layer is arranged between the flexibility cushion layer and a rock-fill dam body. The construction method comprises the technical steps of filling and building the transition layer, pouring the flexibility cushion layer, paving the composite geomembrane, pouring the concrete protection layer and the like. The membrane anti-seepage body can keep stable on a high rock-fill dam slope, the ability of adapting to deformation of a coverage layer dam foundation and the dam body is high, the structural form is simple, construction is fast, and the anti-seepage problem of the high rock-fill dam on the deep coverage layer can be effectively solved.

The invention discloses shield synchronous grouting slurry prepared from shield waste slurry and a construction method thereof, each cubic meter of the shield synchronous grouting slurry comprises the following components: 100-200kg of cement or 40-100kg of lime, 300-450kg of fly ash, 200-750kg of the waste slurry, 600-1300kg of sand, 0-450kg of water and 0-12kg of a water reducer. The waste slurry pollution problems can be alleviated, the amount of raw materials of mortar can be reduced, the shield waste slurry is mainly used in backwall grouting material for replacement of bentonite and arts of water in backwall grouting mortar, and the environmental pollution problems caused by the waste slurry can be reduced.

The invention relates to a construction method for double-sided enhancement or reinforcement of the engineering structures, belonging to the technical field of enhancing or reinforcing the engineering structure through high-strength fibrous composites, which is characterized in that: holes are drilled on a surface of the enhanced or reinforced civil engineering structure, and longer screws are embedded in the holes to fix two pairs of wave-shaped gear-grip anchors at the same time, so that the high-strength fibrous composite sheets can be drawn and fixed by the anchors at the two sides of the engineering structure. The construction method for double-sided enhancement or reinforcement of the engineering structures has the advantages of definite and even stressing, simple path of force transfer, convenient construction and operation, high efficiency, improving the loading capacity of the civil engineering structures and extending the service life of the civil engineering structures, and is widely used in large-scale building structures of the civil engineering, especially in the construction, reconstruction and maintenance of the large-scale thin wall structures (like T-shaped beams, etc.).

The invention discloses a beam-removing rib-increasing strengthening construction technology of a highway bridge. A bearing beam of a strengthened bridge comprises a plurality of hollow beam plates. The technology comprises the following steps: chiseling and removing an original collision prevention guardrail and a bridge face laying layer; eliminating a transverse connection hinge seam between the two adjacent hollow beam plates; hanging and moving the hollow beam plates and supporting reasonably; embedding ribs and pouring the pad stone of a supporting seat anew; checking, determining, recycling the hollow beam plates, repairing defects and processing cracks; sticking the beam bottoms of edge beams and strengthening steel plates; anew installing the hollow beam plates transversely at intervals; constructing rib beams which are added newly; constructing a steel bar net of the bridge face laying layer and embedding the steel bar of the collision prevention guardrail in advance; pouringthe concrete of the bridge face laying layer; and constructing the collision prevention guardrail and installing bridge face expansion joints. The invention has reasonable design, smaller execution difficulty, simple construction steps and low construction cost, has small damage to the original hollow beam plates, can enhance the bearing capacity of an original structure of a hollow plate bridge,has very good strengthening effect and can effectively solve the strengthening problem of the hollow plate bridge.

The invention relates to a tunnel lining rapid repair structure based on a carbon fiber woven mesh and a repair method thereof. The tunnel lining rapid repair structure based on the carbon fiber woven mesh comprises self-propelled hollow grouting anchors, joist steel, the carbon fiber woven mesh, U-shaped hooks and a composite mortar layer. The joist steel is arranged on a tunnel lining to be repaired, one end of each self-propelled hollow grouting anchor stretches into the tunnel lining to be repaired in the radial direction of the tunnel lining to be repaired, the other end of each self-propelled hollow grouting anchor is connected with joist steel, the carbon fiber woven mesh is laid on the inner wall of the tunnel lining to be repaired and connected with the joist steel through the U-shaped hooks, and the composite mortar layer is sprayed on the inner surface of the carbon fiber woven mesh. The tunnel lining rapid repair structure based on the carbon fiber woven mesh and the repair method thereof aims to solve the problems existing in the existing tunnel lining reinforcing technology, the structure is reasonable in design, the mechanical property is good the steps of the method is simple, the operability is high, and the project cost is low.

The invention discloses a main structure for a metro long-span station and a pillar arching construction method thereof. The main structure comprises a station interior main structure, a plurality of middle pillars, a middle plate and a main arch part, wherein the station interior main structure is dug; the middle plate is located on the middle pillars; the main arch part is located right above the main structure; a bottom longitudinal beam is arranged at the bottom of the station interior main structure; a top longitudinal beam is arranged on the main arch part; and a middle longitudinal beam is arranged between adjacent middle pillars. The construction method comprises the following steps: 1) preparing in earlier stage; 2) digging a guiding hole and performing primary bracing and bridging construction; 3) constructing the bottom longitudinal beam, the middle pillars and the top longitudinal beam; 4) constructing a primary branch arch and refilling an arch back; 5) performing arch secondary lining construction; 6) digging the upper part of the main structure and constructing a primary branch of a side wall of the upper part; 7) performing secondary lining construction of the middle longitudinal beam, the middle plate and the side wall of the upper part; 8) digging the lower part of the main structure and constructing the primary branch of the side wall of the lower part; and 9) performing secondary lining construction for a base plate and the side wall of the lower part. The construction method provided by the invention has the advantages of reasonable design, simple construction step, convenience in realizing, small construction difficulty and high construction speed.

The invention discloses a large-span section assembling bridge manufacturing machine and an assembling construction process thereof. The bridge manufacturing machine comprises a bridge manufacturing machine main body structure, a crown block system and a forward moving system, wherein the bridge manufacturing machine main body structure comprises a left main truss, a right main truss, an upper lateral brace and a lower lateral brace; the two main trusses comprise a main beam and a guide beam, and the guide beam has a three-layer step type truss structure; and a plurality of connecting rods comprise 87 type military beams and heterogenic rods. The assembling construction process comprises the following steps of: 1. assembling and constructing a first hole beam of a single-hole beam or a porous beam; forwards shifting the bridge manufacturing machine main body structure to construct the next hole beam across the hole; and repeatedly constructing till the integral construction of a constructed bridge is finished and the bridge manufacturing machine main body structure is disassembled. The bridge manufacturing machine has reasonable structural design, large span, convenient processing, manufacture, assembly and installation, strong weight capacity and low investment cost; and the used assembling construction process is simple, is convenient for realization and can be effectively suitable for the assembling construction process of bridge sections with the span of 64m and below 64m.

The invention relates to a large-aperture pretension base plate hollow grouting device, which comprises a fastening section A, a grouting section B and an anchoring section C. In the large-aperture pretension base plate hollow grouting device, a mechanical anchoring mode is adopted; by using a structural characteristic of a pouring bayonet nail that the pouring bayonet nail can be opened or closed and can only move forward instead of moving backward according to a diameter of an anchoring rod hole, an anchoring rope can be effectively anchored; meanwhile, pretension can be applied before grouting. The device has a simple structure and lower cost, is accepted by the market easily, is easy to install mechanically or manually. By adoption of the device, the fastening efficiency and the reliability of rock bodies can be effectively improved; and an important technical insurance is provided to support and protect deep soft rock alleys easily and to realize safety production in mines; furthermore, the method is simple and is easy to implement; time and labor are saved; the efficiency is high; and the large-aperture pretension base plate hollow grouting device has a wide practicability.

The invention relates to an anti-frost-lifting anti-thaw-collapse foundation self-refrigeration device and a use method thereof. The device includes a foundation side wall self-refrigeration structureand a lock catch, and the foundation side wall self-refrigeration structure is arranged on the periphery of a pile foundation and includes a temperature sensor, a temperature control device, a control switch, a liquid nitrogen storage tank, an S-shaped tube and a vacuum generator. The temperature sensor is arranged on the side wall of pile foundation and connected with the temperature control device, the temperature control device is connected with and controls the control switch which is connected with the liquid nitrogen storage tank and one end of the S-shaped tube, the liquid nitrogen storage tank is arranged near the pile foundation, the S-shaped tube is arranged on the periphery of the pile foundation, the other end of the S-shaped tube is connected with the vacuum generator which is arranged near the pile foundation, and the lock catch is arranged on the pile foundation. The device makes the pile foundation effectively resist uplifting force and thaw collapse caused by swellingforce of frozen earth, and is suitable for pile foundations in high-cold areas, especially in permafrost or seasonal frozen soil areas, to prevent tower foundations of power transmission lines from frost lifting thaw collapse.

The invention discloses an assembled type shear wall upper-layer and lower-layer combined connection structure which comprises an upper-layer prefabricated wall and a lower-layer prefabricated wall which are connected in a butted mode. When the upper-layer prefabricated wall and the lower-layer prefabricated wall are connected in the butted mode, a downward-protruding supporting structure of the upper-layer prefabricated wall is supported on the lower-layer prefabricated wall, structural longitudinal ribs of an embedded column of the upper-layer prefabricated wall and structural longitudinal ribs of an embedded column of the lower-layer prefabricated wall are opposite in a one-to-one mode and are connected mechanically, the structural longitudinal ribs I of the upper-layer prefabricated wall and the structural longitudinal ribs II of the lower-layer prefabricated wall are connected in an overlapped mode, and the upper-layer prefabricated wall and the lower-layer prefabricated wall are connected at the joint through a cast-in-place concrete structure. The combined connection way combined with the cast-in-place concrete structure is formed through mechanical connection, steel bar splicing and concrete spraying, the wall prefabrication technology is simpler, on-site construction is more convenient and rapider, and the workpiece manufacturing cost and the construction cost can be reduced.

The invention discloses a PBL (perfobond leiste) shear connector stiffened steel pipe concrete arch which comprises a main arch constituted by continuously assembling a plurality of steel pipe concrete arch segments, and the steel pipe concrete arch segments are divided into two types, namely stiffened steel pipe concrete arch segments provided with PBL shear connectors and ordinary steel pipe concrete arch segments which are not provided with the PBL shear connectors according to the stress situations in the positions where the steel pipe concrete arch segments are located in the main arch; and each ordinary steel pipe concrete arch segment comprises an arch-shaped steel pipe II and a concrete-filled structure II poured in the arch-shaped steel pipe II, and each stiffened steel pipe concrete arch segment comprises an arch-shaped steel pipe I, a plurality of the PBL shear connectors distributed on the inner side wall of the arch-shaped steel pipe I along the direction of the axial line and a concrete-filled structure I poured in the arch-shaped steel pipe I. The PBL (perfobond leiste) shear connector stiffened steel pipe concrete arch has simple structure, is reasonable in design, convenient to construct, excellent in mechanical properties and easy to control construction quality, and can solve the problems of void disease between steel pipes and concrete, shorter service life and the like in the existing steel pipe concrete arch structure.

The invention relates to photoacoustic spectrum measurement technologies, in particular to an all-optical gas detection method and a device based on a quartz enhanced photoacoustic spectrum, and solves the technical problems that detection signals are susceptible to electromagnetic environment interference and the device layout is easily influenced by the space size in existing photoacoustic spectrum technologies. The all-optical trace gas detection method based on the quartz enhanced photoacoustic spectrum includes: introducing a beam of probe light to the external side of arbitrary vibration arm of a tuning fork quartz crystal oscillator, gathering the information of intensity change caused by reflection direction change of reflected light received by one receiving plane fixed at a spatial position, and acquiring the concentration of a to-be-detected gas according to the intensity change information. The device only has optical components at a measurement site, thus having very strong anti-electromagnetic interference ability. The device and the method have very strong technical universality, and is completely applicable to remote nondestructive detection of environmental monitoring, food safety monitoring, industrial production control and other different fields.

The invention provides an exterior-covered waterproof construction method for subway station side walls with hanging plate girders. The method comprises the following particular steps that firstly, underground diaphragm walls, embedded bars, uplift piles and lattice columns are constructed; secondly, a first layer of an earthwork is excavated, and roofs of a subway station and a commercial real estate are constructed; thirdly, a second layer of the earthwork and a second last layer of the earthwork are continuously excavated, pouring of middle plates and the hanging plate girders of all layers of the subway station is completed, and waterproof treatment is performed before the middle plates and the hanging plate girders of all the layers are poured; fourthly, the bottommost layer of the earthwork is excavated, bottom plates of the subway station and the commercial real estate are constructed, waterproof structures at the bottom plates are constructed, and the station side wall at the bottommost layer is poured; fifthly, all layers of the hanging plate girders are sequentially removed in a chiseling mode from bottom to top, and the station side walls are sequentially poured after waterproof treatment is performed on the layers.

The invention discloses an integrally-formed drainage ditch, which comprises a drainage ditch body, a shaped digging bucket, a shaped slope scraper, sliding mold rails, a shaped side mold and a bottomscraping cross beam frame, wherein the sliding mold rails are assembled on two sides of the drainage ditch body; the shaped side mold is arranged in the drainage ditch body; the bottom scraping crossbeam frame is arranged at the bottom of the drainage ditch body; the shaped side mold can be fixedly arranged on the bottom scraping cross beam frame; the bottom scraping cross beam frame is connected with a sliding cross beam gantry and is dragged and slid by the sliding cross beam gantry; and the shaped side mold is connected with a side mold gantry and is dragged and slid by the side mold gantry. The drainage ditch simplifies the construction steps, saves the construction time, reduces the construction cost, is easy to excavate and form, has low operation difficulty, so that the safety inthe construction process can be effectively ensured; and the drainage ditch has beautiful appearance and good quality. The second object of the invention is the construction method of the integrally-formed drainage ditch, the method is applied to the integrally-formed drainage ditch, and further has the advantages of high safety, high convenience and the like.

The invention relates to a template integrated thermal insulation board and its processing method. The board comprises the following components by weight: 65-90 parts of gypsum, 0.01-1 part of a fiber, 0.5-3 parts of an organic bonding material, and 5-20 parts of inorganic powder. The board is processed by subjecting the components to mixing, foaming and other processes. The template integrated thermal insulation board provided in the invention has the advantages of: ensuring the thermal insulation performance of the integrated board, and simplifying the construction procedure during construction, thus meeting the actual demands.

The invention relates to a composite prestressed bar finished guy cable. The guy cable comprises a composite prestressed bar cable body consisting of a plurality of single-stranded steel stranded wires and a plurality of guy cable steel wires, and two anchoring pieces positioned at the two ends of the cable body, wherein each anchoring piece comprises an anchoring unit and a sealing unit; the anchoring unit comprises an end cover, a conical sleeve, an anchor plate, a nut, an anchor cup and a restraining ring; a plurality of anchor holes are formed in the anchor plate; the conical sleeve is arranged on a central wire at the end of each single-stranded steel stranded wire of the cable body of the finished guy cable; the end of the central wire is provided with an upset head; side wires are positioned on the outer side of the conical sleeve and conically distributed in a scattered mode; the side wires and the conical anchor holes of the anchor plate form the single-stranded steel stranded wire anchoring unit; the guy cable steel wires are uniformly distributed at the peripheries of the single-stranded steel stranded wires and penetrate through the anchor plate; the ends of the guy cable steel wires are provided with upset heads; an epoxy filler is poured into the anchor cup; and the single-stranded steel stranded wires and the guy cable steel wires are anchored after the epoxy filler is cured. The guy cable is prefabricated in a factory, has high sealing performance and corrosion resistance, is economic and practical, and is easy to construct, install and tension, and the breaking force of the guy cable can be accurately adjusted according to a structural requirement.

The invention discloses an engineered cementitious composite (ECC)-reinforced concrete (RC) combination column and a novel connection mode thereof. ECC is replaced with the conventional RC which is adopted in a node connection area in the conventional assembly integrated frame structure system so as to implement the ECC-RC combination column; H section steel with a certain length is pre-embedded in upper and lower prefabricated common concrete columns, a porous end plate is connected to the end of the H-shaped steel by bolts, and the self weight of the upper prefabricated common concrete column is supported by using the bolts and the section steel to ensure that the prefabricated columns are arranged in place; and after the columns are arranged in place, the perpendicularity of the columns is adjusted by leveling nuts which are arranged on the bolts, and the columns are fixed. According to the ECC-RC combination column, an external adjustable inclined strut is not needed to be used for correcting and fixing, a stirrup is not required, the occupying of the external adjustable inclined strut is avoided, the construction speed is increased, high construction quality and the seismic performance of the connection area are guaranteed, the ECC-RC combination column is reasonable in structure, and easy to design and construct, and the whole performance of the assembly integrated frame structure can be improved further.

The invention discloses a construction method for a bored pile. The construction method comprises steps of preparing before construction, carrying out boring construction, implanting a wall retaining bag, descending a reinforcing cage and pouring concrete; first of all, the position of the bored pile is positioned; obstacles within an area influencing the pile foundation construction are cleaned up; a steel casing is embedded; a drilling machine is mounted; a pile hole of the cast-in-site pile is drilled; the cylindrical retaining wall bag of which the diameter equals to the inner diameter of the pile hole is implanted inside the pile hole; the wall retaining bag is sealed; the interior of the wall retaining bag is continuously inflated; the wall retaining bag is sufficiently expanded, so as to enable the wall retaining bag to be attached to the inner wall of the pile hole; the reinforcing cage is released downward; a grouting pipe is mounted above the reinforcing cage; concrete is poured from the grouting pipe into the drilled hole; when the pouring is completed, the steel casing is pulled out; the cast-in-site pile is solidified and formed. During the construction process of the bored pile provided by the invention, a slurry retaining wall is not required, so that the construction method for the bored pile is not only economical and environment friendly, but also the manufacturing cost is lowered; the wall retaining bag is adopted to replace the slurry retaining wall; operations are easy; construction steps are simplified; workload is reduced; the construction period is shortened.

The invention relates to the technical field of tunnel underground engineering, in particular to a tunnel second lining construction joint waterproof structure. Through arrangement of five parts of structures that a water receiving box is pre-arranged in advance, a construction joint is filled with a polystyrene foam board and a polyurethane sealant, a middle-buried-type steel edge rubber water stop belt is pre-buried in a middle joint, double-layer waterproof coiled materials are laid, and an external rubber water stop belt is arranged, the problem of water leakage of the construction joint is prevented and treated in advance, and aiming at the problem of water leakage of different causes and parts, an effective novel waterproof structure system combining plugging, cutting and draining isformed.

The invention discloses a method for treating a shallow disease of an expansive soil slope. The method comprises the following steps of: 1, excavating the slope into different levels; 2, constructing a protection foundation by using cement mortar: uniformly painting a cement mortar layer on a slope base of each level of the excavated multi-level stepped slope to form a slope base protection foundation; 3, treating the slope level by level: treating the multi-level slope of the multi-level stepped slope level by level from top to bottom or from bottom to top, wherein for any level of the slope Ai, the treatment process comprises the following steps of: laying and fixing waste tires; overlaying a mixed material; covering geogrids; and paving non-woven fabrics; and 4, post-stage curing: curing the mixed material according to a conventional herbaceous plant curing method. The method for treating the shallow disease of the expansive soil slope has the advantages of novel and reasonable design, simple and practical operation, low cost, good treatment effect and capacity of effectively solving the problem of shallow diseases of the expansive soil slope.

The invention discloses an integrated assembly type pipe gallery based on a composite bottom plate and a construction method thereof. Each unit plate block in the composite bottom plate of the integrated assembly type pipe gallery comprises a laminated portion and a cast-in-place portion which is located on the periphery of the laminated portion, wherein each laminated portion comprises a prefabricated bottom plate which is fixedly connected with a foundation cushion layer, a bottom plate truss and a bottom plate cast-in-place layer, and the peripheral edges of each bottom plate truss horizontally outwards extends to form a steel bar framework of the corresponding cast-in-place portion; a double-layer laminated wallboard comprises an outer prefabricated plate which is located on a water attaining face, an inner prefabricated plate which is located on a water opposite face and a cast-in-place sandwich layer which is located between the outer prefabricated plate and the inner prefabricated plate, the outer prefabricated plates and the inner prefabricated plates are connected through wall truss steel bars, and the bottoms of the wall truss steel bars are connected with the margins ofside edges of the steel bar frameworks of the cast-in-place portions of the composite bottom plate; and the lower end surface of the outer prefabricated plate is tightly attached to the upper surfaceof the foundation cushion layer, and a top plate cast-in-place layer of a laminated top plate and the cast-in-place sandwich layer of the double-layer laminated wallboard are integrally casted. According to the integrated assembly type pipe gallery and the construction method, the construction is convenient, fast and efficient, the construction cost is low, the waterproof effect is good, and the overall performance of the pipe gallery is high.

The invention discloses an electric tracing thermal insulation construction method for an outdoor pipeline, which comprises the following steps of: 1, polishing treatment; 2, determination of length of an electric heating tape; 3, pavement of the electric heating tape; 4, construction of a thermal insulation layer, namely after the pavement of the electric heating tape is finished, arranging the thermal insulation layer on the outer wall of the outdoor pipeline, wherein the thermal insulation layer is made of foam, rubber or plastic and the thickness of the thermal insulation layer is 60 to 80 millimeters; and 5, insulation test on the electric heating tape with a tramegger test method. The purposes of regulating the temperature of the outdoor pipeline and preventing the outdoor pipeline from being frozen are fulfilled through a temperature sensor and cooperative work of elements in a temperature control box.

The invention discloses an underground box culvert constructing method closely attached to a pile foundation bearing platform. A main structure of an underground box culvert is closely attached to edges of an existing bearing platform. The constructing method comprises the following steps: a boundary invading perpendicular supporting structure is constructed in a width dimension range of the bearing platform; earth excavation and horizontal supporting component erection are performed alternatively up to a designed height so that a foundation pit is formed; a reinforced concrete press plate is poured at the bottom of the foundation pit; the boundary invading perpendicular supporting structure is chiseled in a segmented mode from top to bottom, a soil blocking prefabricating beam is installed in a following mode, meanwhile, piecemeal support exchange is performed to horizontal supporting components and the operation is circulated till the bottom of the foundation pit; after an underground box culvert constructing bottom plate is poured, the horizontal supporting components are detached from bottom to top, side walls of the underground box culvert are poured with the soil blocking prefabricating beam serving as an outer side pattern plate and the two operations are performed alternatively; and a top plate of the underground box culvert is poured finally. The underground box culvert constructing method closely attached to the pile foundation bearing platform has the advantages that the foundation pit is supported effectively under the condition that a requirement for a space of the underground pit is satisfied, meanwhile influences on an existing pile foundation are controlled and normal operating requirements of an existing structure are satisfied.

The invention relates to a self-compaction rubber concrete canal lining and a preparation method therefor. The self-compaction rubber concrete canal lining comprises a canal lining main body, whereinthe canal lining main body is prepared from self-compaction rubber concrete. The lining material provided by the invention can be used for effectively improving high brittleness and low compliance ofthe conventional concrete linings and effectively improving the ductility, impervious waterproofing performance, salt corrosion resistance, freeze-thaw resistance and surrounding soil mass deformationadaptability of lining structures. In addition, the lining material can be filled and compacted in a lining die without bumping down in a poured-in-place process, so that construction steps are simplified, and the schedule of construction is accelerated. The self-compaction rubber concrete canal lining provided by the invention has better popularization and application prospects.