181results about How to "Guaranteed reinforcement effect" patented technology

The invention discloses an electroosmosis electrode and an electroosmosis draining system thereof, which comprise sectional draining electrode pipes, conductive filter cloth, a programmable direct current power supply, a draining pipe, a timing controller, a cable, a vacuum pump, a region optimizing device and a seismic wave real-time monitoring alarm, wherein the sectional draining electrode pipes are in thread connection by soft conductive connectors, are wrapped by the conductive filter cloth on the outside, meet the requirements of construction environments on mechanical properties and corrosion resistant property, and can still be used for a long time after multiple times of earthquakes and electroosmosis, and the use efficiency of electroosmosis equipment during soft base treatment can be improved by the uninterruptible electrifying of an electroosmosis instrument, thus reducing the construction cost. Excess pore water pressure generated by earthquake action can be timely discharged from a draining channel by the electroosmosis and vacuum negative actions, thus avoiding the shock damage to upper-part soil body and the earthquake liquefaction of a liquefied soil layer caused by the excess pore water pressure. The electroosmosis electrode and the electroosmosis draining system thereof are simple in structure, convenient to construct, durable and practical, and provides technical support and guarantee for promotion and application of an electroosmosis method on the fields such as soft base reinforcing and earthquake fortification of buildings.

The invention discloses a process for reinforcing adjustable and controllable capping beam of piers, comprising the following steps: (1) engraving shearing force grooves on the surface of the original capping beam concrete according to the design, embedding reinforcing steel bars and chiseling; (2) mixing plant fiber and steel fiber with the newly poured capping beam concrete, wherein the plant fiber is mixed in order to prevent the early shrinkage and crack of the concrete, and the steel fiber is mixed in order to prevent the later-stage stressed crack of the concrete; (3) leaving a certain area for secondary pouring in the middle in advance, wherein the area is 1 / 3 the length of the capping beam; (4) jacking capping beams by using two ends of a jack, and adjusting the reasonable load born by the new capping beam and the old capping beam according to a certain proportion by controlling the force and the jacking height of the jack to adjust the internal force of structures according to the design; (5) transferring the internal force of the basic part of the old structure to the basic part of the newly added structure by jacking; and (6) transferring partial or whole load born by the capping beam of the old biers to the new piers and the combined new and old capping beam structure by controlling the number and the position of prestressed steel strands to adjust the proportion of the whole load born by the combined new and old capping beam structure.

The invention discloses a deep hole pre-grouting top plate reinforcement method for a large-mining height working face under special geological conditions. By the method, the phenomenon that local inbreak accidents of a top plate of the large-mining height working face are easy to cause due to the special geological conditions can be avoided, and the problems of poor effect of the conventional cement grout advanced reinforcement of the special geological conditions and high cost of high-polymer shallow part grouting can be solved. The method comprises the following steps of: distributing three lines of drilled holes on a laneway's side from top to bottom in a crossed shape, adjusting the angles of all the drilled holes, and controlling the positions of end holes, so that the effect of multi-point multi-face effective distance reinforcement can be achieved; after each drilled hole is opened, inserting a 108 sleeve pipe into the drilled hole, and solidifying by using grout; when each hole is drilled forward 5 meters, grouting once; after initial setting, cleaning, and drilling the next section continuously, wherein during construction, a short circle is finished after the drilling depth reaches 5 meters; and after solidification, cleaning and continuously drilling until the hole depth reaches the designed depth. The method has the advantages of good reinforcement effect, reasonable parameter, simplicity in construction, low cost and safety and reliability, and is particularly suitable for reinforcing the large-mining height working face under the special geological conditions.

The invention discloses a method for reinforcing a cracked and damaged lining of an operation tunnel. An annular reinforcing structure is mainly formed by ribbing steel bars, anchor rods, a steel bar mesh and jetting concrete, and therefore the cracked and damaged lining is reinforced. The method is easy to implement, the lining of the tunnel can be prevented from being detached and changed on a large scale, the influence on tunnel operation is reduced to the maximum, the repairing construction method and technology are fast and rapid to conduct, the repairing time can be greatly shortened, and the construction process and structure safety can be ensured. Thus, by means of the structure, great economic benefits can be brought, and the method is particularly suitable for reinforcing of the lining of the operation tunnel.

The invention provides a deep hole grouting technology and method at an advanced abutment pressure region for a comprehensive mining work surface of a coal mine. According to the method disclosed by the invention, early strength deep hole grouting materials are matched with a high-pressure mass-flow grouting pump, and an advanced hole forming technology, a pipe inserting technology, a hole sealing technology and a grouting technology for the advanced abutment pressure region are adopted, so that the problem that high-yield high-efficiency coal mining work surfaces with large mining height, top coal caving and the like can are often subjected to rib spalling can be solved; the method does not influence the production of the work surface, the mechanical properties of coal bodies are essentially improved, the completeness of the coal bodies is re-molded, and the method has a favorable popularization property.

The invention provides an MJS method pile reinforcement system and a construction method in the field of urban subway tunnel construction technology in which a water-rich sand layer shield passes under an existing tunnel. The main construction steps of this kind of reinforcement system are: (a) investigation of the safety status of the operating tunnel segment, (b) the layout of the monitoring system in the tunnel; (c) the construction of the shaft; (d) the reinforcement construction of the MJS horizontal pile; (e) the detection of the reinforcement effect ; (f) Shaft landfill. This method reinforces the water-rich sand layer between the proposed tunnel and the operating tunnel by constructing MJS horizontal piles in the vertical shaft, and inspects it after the construction is completed to ensure the reinforcement effect, thus reducing the impact on the shield tunneling process of the proposed tunnel. The impact of the upper part of the tunnel in operation has enabled the tunnel shield excavation and underpass work to proceed smoothly.

The invention discloses a method for reinforcing a coastal recent blow filled soft ground, comprising the following steps that: firstly, a pre-drainage device is manufactured and assembled; secondly, pre-drainage is performed for the first time, and dynamic drainage measures are auxiliarily increased; thirdly, dynamic consolidation is performed for the first time; fourthly, the pre-drainage is performed for the second time; fifthly, the dynamic consolidation is performed for the second time; sixthly, the pre-drainage is performed for the third time and the drainage device is disassembled; seventhly, the dynamic consolidation is performed for the third time. The method is based on the dynamic property, the drainage consolidation mechanism and the dynamic consolidation mechanism of saturated soft soil and organically integrates the well point precipitation technology, the dynamic drainage technology and the heavy tamping dynamic consolidation technology, thereby the method guarantees the implementation and processing effects on the soft ground and has the technical and economic advantages of short construction time, low manufacturing cost and good effect.

The invention discloses a drainage construction method for a tunnel passing through a clastic rock steeply inclined reverse thrust water-rich fault. The drainage construction method is characterized in that a construction tunnel main cave is divided into a rear side tunnel section, a front side tunnel section and a middle portion tunnel section passing through the clastic rock steeply inclined reverse thrust water-rich fault, wherein a by-pass pilot tunnel and a drain cavern are formed in the same side of the construction tunnel main cave. When drainage construction is carried out in the construction tunnel main cave, the drainage construction method comprises the steps of: 1, carrying out preliminary excavation construction on the rear side tunnel section; 2, synchronously carrying out excavation construction on the rear side tunnel section and a drainage hole body of the drain cavern; 3, synchronously carrying out excavation construction on the rear side tunnel section, the drainagehole body of the drain cavern and a rear side by-pass pilot tunnel section; 4, and carrying out construction on the front portion drainage hole body, and synchronously carrying out construction on theby-pass pilot tunnel and the tunnel main cave. The drainage construction method provides a new construction working plane by means of the by-pass pilot tunnel, improves the working efficiency, provides the high-altitude drainage hole between the tunnel main cave and the by-pass pilot tunnel, can drain water embedded in the fault to the greatest extent, reduces water pressure in the fault in frontof a tunnel face, ensures safety construction of each tunnel face and can shorten the construction period.

The invention discloses a pre-stressing carbon fiber cloth reinforcement reinforced concrete column construction method. The method comprises the steps: performing chamfering, surface polishing and hole filling treatments on a to-be-reinforced concrete column, and coating the surface of a pre-designed to-be-reinforced part with epoxy, thereby achieving a function of reducing surface friction force between carbon fiber cloth and concrete after the epoxy is solidified, and effectively transferring a pre-stressing force; meanwhile, in order to prevent the edge of the carbon fiber cloth from running before covering, adhering a transparent adhesive tape on the surface of the carbon fiber cloth; clamping the carbon fiber cloth by utilizing self-locking type anchorage clamping pieces, winding the carbon fiber cloth around the covered concrete column, and screwing a screw rod by utilizing a spanner to apply a pre-stressing force; after the pre-stressing force is up to a preset size, and re-coating the surface of the carbon fiber cloth with a layer of epoxy, thereby preventing individual fibers of the carbon fiber cloth from generating breaking and running situations, and ensuring the integral stress. The pre-stressing carbon fiber cloth reinforcement reinforced concrete column construction method has the advantages that the concept is novel, construction steps are clear, simple and practical, and a high-strength function of the carbon fiber cloth is fully exerted, so that the reinforcement effect is integrally improved, and the method is convenient to popularize and apply.

The invention discloses a temporary reinforcement method of an ancient building. The temporary reinforcement method comprises the following steps: scaffolds are respectively erected at the inner side and the outer side of a wall body according to the direction of the axis of the wall of the ancient building, and are tightly attached with the wall body; protecting pads are padded between the scaffolds and the wall body; and a plurality of full-length steel pipes are adopted for respectively penetrating through door holes and window holes on the wall body, and are fixed with the scaffolds at the inner sides and the outer sides of the wall body in the same horizontal plane by fasteners. The invention also discloses a temporary reinforcement device of the ancient building. In the invention, the scaffolds are used for internal and external reinforcement of the ancient building, so that not only can the reinforcement effect be guaranteed, but also the damage to the ancient building can be avoided, and the original appearance of the ancient building is protected to the maximum in the displacement, jacking or repairing engineering.

The invention discloses a pulling reinforcement method for an internal fissure of a dangerous rock. The method includes the steps: 1) analyzing stability of a dangerous rock body; 2) searching the outer surface of the dangerous rock body and determining an anchoring position; 3) drilling an anchor hole at the determined anchoring position; 4) manufacturing an anchor rod as needed; 5) placing the anchor rod into the anchor hole; and 6) grouting the anchor hole, vibrating and compacting grouted slurry until solidification of the grouted slurry to complete pulling reinforcement. Based on the related mechanics principle, traditional penetration anchorage with a full-length constant-section anchor rod is reasonably improved, the rock body on two sides of the internal fissure is reliably pulled and reinforced, and steel for a less stressed position far away from the internal fissure is saved. The method is applicable to reinforcing various enormous and extensive dangerous rocks in a mountainous area, is simple and convenient in construction, safe and reliable, serves as an effective means for reinforcing the dangerous rocks, and has excellent economy as compared with a traditional penetration anchor rod supporting method.

The invention provides a novel reinforcement device for a reinforced concrete beam and a floor slab, which comprises an U-shaped steel hoop part tightening the reinforced concrete beam from bottom to top, and two bolt parts respectively penetrating the floor slab to be fixedly connected with two ends of the steel hoop part, wherein nuts of the bolt parts, which are screwed on the bolt parts, are positioned above the floor slab. Due to the adoption of the technical scheme, the reinforced concrete beam and the floor slab are pre-tightened and locked together through matching of the steel hoop parts and the bolt parts. Compared with the prior art, stress hysteresis effect caused by a traditional reinforcement device can be effectively avoided, the anchoring validity is maintained, the reinforcement effect is effectively ensured, and the shear strength of the reinforced concrete beam is improved. Moreover, the structure is easy to realize, the appearance is compact and beautiful, and the comprehensive practicability is strong. The invention further provides a construction method of the novel reinforcement device, the steps are concise and clear, and the implementation efficiency of the novel reinforcement device can be effectively improved.

The embodiment of the invention provides an information tracking grouting method, comprising the following steps of: detecting stratum information through a probe hole arranged on the stratum, and dividing the stratum into a strong water area and a weak water area according to the stratum information; carrying out basic grouting in the weak area; carrying out reinforced grouting in the strong water area; and checking the grouting effect. In the information tracking grouting method of the embodiment of the invention, the stratum information can be detected through the probe hole arranged on the stratum to determine the stratum information, and grouting and water plugging are carried out with pertinence according to the stratum information, thereby the grouting and water plugging as well as the strengthening effect are ensured, the amount of grouting wells is reduced, and the grouting efficiency is remarkably improved.

The invention discloses a construction method for a tunnel passing through a high-angle thrust water-rich and sand-rich fault. The method comprises the steps: 1, performing the preliminary excavationand the supporting construction of a rear tunnel segment; 2, performing the synchronous excavation and the supporting construction of the rear tunnel segment and a water drainage hole body of a waterdrainage hole; 3, performing the synchronous excavation and the supporting construction of the rear tunnel segment, the water drainage hole body of the water drainage hole and a rear detouring headingsegment; 4, performing the excavation and the supporting construction of a front water drainage hole body, a front heating segment and a central tunnel segment; 5, performing the excavation and the supporting construction of a front tunnel segment. According to the invention, the water on the upper wall of the fault is drained through a high-level water drainage hole between a tunnel front hole and a detouring heading pit, and the auxiliary water drainage is performed through the detouring heading pit, and the fault condition in front of the tunnel face of the front hole can be explored in advance, thereby guaranteeing the construction safety of each tunnel face. The method employs the three-step method for the excavation of the tunnel front hole, employs double preliminary supporting structures for the full-section supporting after excavation, can guarantee the safety of the tunnel structure later, and shortens the construction cycle.

The invention discloses a method for determining the filling compaction degree of a dynamically-compacted embankment according to compaction subsidence. By adopting the method, the average compaction degree of the embankment can be rapidly acquired on site, and the reinforcing effect after dynamic compaction is then evaluated. The method comprises the steps that the reinforcing mode for dynamic compaction is simplified to be cylindrical; then an on-site embankment dynamic compaction influence depth H and the diameter L of a dynamic compaction influence range are determined; therefore the volume V of the dynamic compaction ramming influence is calculated; then a filling sample of the embankment before ramming is acquired, and the compaction degree of the on-site embankment before dynamic compaction is calculated; then the depth of a compaction pit and the diameter of a compaction rammer are detected on the on-site embankment after dynamic compaction, so that the volume of the compaction pit is calculated; and then the compaction degree is calculated according to the change of the volume of filling before and after ramming. By adopting the method for determining the filling compaction degree of the dynamically-compacted embankment according to the compaction subsidence, the detection efficiency for foundation dynamic compaction reinforcing quality is improved; the construction cost is lowered; the reinforcing effect of dynamic compaction can be evaluated in time; and repeated construction is avoided.

The invention provides a reinforcing device of a concrete beam. The reinforcing device of the concrete beam comprises a steel groove body, inner distance rings and studs. The steel groove body is of the structure with the upper surface provided with an opening. The concrete beam can be sleeved with the steel groove body. An interlayer is arranged between the steel groove body and the concrete beam. The two sides of the long axis of the upper surface of the steel groove body respectively extend horizontally and outwards to form an upper wing platform. The studs are fixedly arranged on the upper wing platforms at intervals respectively. The inner distance rings are fixedly arranged on a groove defined by the side faces and the bottom face of the steel groove body at intervals. The steel groove body, the concrete beam and a grout blanket are fixedly connected together through the inner distance rings and the studs, so that the bending bearing performance and the shearing bearing performance of the concrete beam are improved, the grouting bracket is effectively prevented from shedding, and the long-term reinforcing effect is guaranteed. The invention further provides a construction method of the reinforcing device, and effective application of the reinforcing device is guaranteed.

The invention provides a novel reinforcement device for a reinforced concrete beam and a floor slab, which comprises an U-shaped steel hoop part tightening the reinforced concrete beam from bottom to top, and two bolt parts respectively penetrating the floor slab to be fixedly connected with two ends of the steel hoop part, wherein nuts of the bolt parts, which are screwed on the bolt parts, are positioned above the floor slab. Due to the adoption of the technical scheme, the reinforced concrete beam and the floor slab are pre-tightened and locked together through matching of the steel hoop parts and the bolt parts. Compared with the prior art, stress hysteresis effect caused by a traditional reinforcement device can be effectively avoided, the anchoring validity is maintained, the reinforcement effect is effectively ensured, and the shear strength of the reinforced concrete beam is improved. Moreover, the structure is easy to realize, the appearance is compact and beautiful, and the comprehensive practicability is strong. The invention further provides a construction method of the novel reinforcement device, the steps are concise and clear, and the implementation efficiency of the novel reinforcement device can be effectively improved.

The invention provides a connecting device for reinforcing steel wire rope net sheets. The connecting device for reinforcing steel wire rope net sheets mainly comprises a fixed end anchor plate, a stretching-drawing end anchor plate, steel wire rope net sheets, a pressing ring and a special pull rod; the fixed end anchor plate and the stretching-drawing end anchor plate are fixed on two ends of a to-be-reinforced construction element; one ends of the steel wire rope net sheets pass through the open holes on the fixed end anchor plate and are fixed by the pressing ring, and the other ends of the steel wire rope net sheets are connected with the special pull rod; and the special pull rod penetrates through the stretching-drawing end anchor plate and is fixed on the stretching-drawing end anchor plate. Through adopting the connecting device for reinforcing the steel wire rope net sheets and the manufacturing method thereof, which are provided by the invention, the steel wire rope net sheets can be effectively connected with the reinforced construction element, a net sheet system can be effectively stretched, drawn and pre-tightened, the effective conducting of force is ensured, and the reinforcement effect of the construction element is ensured fully.

The invention discloses an anti-bending reinforcing structure for prefabricated hollow floors and a construction method of the anti-bending reinforcing structure. The anti-bending reinforcing structure comprises core grouting reinforcing structures for prefabricated hollow floor holes and suspension reinforcing structures for prestressed steel wire ropes. The core grouting reinforcing structures for the prefabricated hollow floor holes comprise the hollow floor holes, grouting hole channels, through rebars and grouting materials. The suspension reinforcing structures for the prestressed steel wire ropes comprise anchorage device systems, reserved pipelines and the prestressed steel wire ropes, the reserved pipelines are arranged in the grouting materials in the first prefabricated hollow floors, the prestressed steel wire ropes are arranged at the bottoms of the second prefabricated hollow floors, and the two ends of the prestressed steel wire ropes penetrate through the reserved pipelines of the first prefabricated hollow floors on the two sides of the corresponding second prefabricated hollow floors and are anchored through the anchorage device systems. According to the structure, the problem of insufficient bearing capacity of the prefabricated hollow floors can be effectively solved, and the integrality, the bearing capacity and shock resistance between the prefabricated hollow floors are further improved.

The invention discloses a method for electrochemical reinforcement of a down dip weak interlayer of a strip mine slope. The method comprises the steps that anodes and cathodes are alternately arrangedin the weak interlayer at intervals; all the anodes and cathodes are correspondingly and sequentially connected in series through wires and then connected with a direct current power supply, and theouter end parts of the anodes communicate with a solution bin containing an electrolyte solution through a solution delivery pipe; and the electrolyte solution in the solution bin is delivered into ananode metal pipe through the solution delivery pipe, and overflows into the weak interlayer from drilled holes in the surfaces of the anodes, and after the anodes are powered by the direct current power supply, the anodes and the electrolyte solution can react chemically to form metal compounds and hydrated cations. The metal compounds play a role in cementing and solidifying soil of the weak interlayer, the potential difference between the anodes and the cathodes drives the water inside the weak interlayer to move to the cathodes and enter into a cathode metal pipe through the drilled holes,the water flows by gravity to flow out freely from the lower end of the cathode metal pipe and be discharged to the outside of the weak interlayer, and the reinforcement effect of the weak interlayeris good.

The invention belongs to the technical field of foundation treatment of geotechnical engineering and provides equipment for strengthening a deep soft soil foundation by vacuum preloading of a filter well and a method. The equipment comprises the filter well, a vacuum device, a sealing structure, a grouting device and a connecting pipeline, wherein the vacuum device is connected to the upper end of the filter well through the connecting pipeline; the sealing structure is used for ensuring sealing of the whole equipment during vacuum preloading operation; the filter well is formed by combining a sand well and a vacuum pipe; the vacuum pipe is formed in the middle part of the sand well and is composed of a plurality of sections of PVC pipes and a plurality of sections of filter pipes; and the grouting device is used for filling cement-clay grout into a pore of the filter well by the vacuum pipe of the filter well to form a cement mortar pile after vacuum preloading is finished. The equipment can reduce the route loss of the vacuum degree of the filter well to make the vacuum degree of the whole section of the filter well keep a high value, so that the whole strengthening effect of the deep soft soil foundation is ensured; and meanwhile, cement mortar is poured into the sand well by utilizing the vacuum pipe to form a cement pile, and thus the bearing capacity of the foundation is dramatically improved.

The invention discloses a butadiene styrene rubber / white carbon black / lignocellulose / montmorillonite rubber composite material. Lignocellulose is modified by graphene oxide and a titanate coupling agent, and then the modified lignocellulose is compound with the white carbon black and montmorillonite to obtain a compound reinforcing agent of butadiene styrene rubber. Tensile strength, hardness and anti-slippery performance of the rubber composite material are improved. The invention also discloses a preparation method of the butadiene styrene rubber / white carbon black / lignocellulose / montmorillonite rubber composite material. By means of the natural and reproducible lignocelluloses, wastes are turned into resources. The white carbon black / lignocellulose / montmorillonite compound reinforcing agent has excellent reinforcing effect on the butadiene styrene rubber, thereby improving processability of the material. The preparation method of the rubber composite material is simple and is environment-friendly and zero-pollution.

The invention discloses a construction method based on an interlocking type ecological geogrid. The interlocking type ecological geogrid is composed of an upper layer geogrid, a lower layer geogrid, an ecological protection layer, a connecting device and an anchoring device, the upper layer geogrid is a biaxial tension polypropylene geogrid, the ecological protection layer is turf or an ecologicalbag filled with nutrient soil and grass seeds, the lower layer geogrid is a steel-plastic geogrid, the upper layer geogrid and the lower layer geogrid are the same in size and specification except for materials, and circular through holes consistent in size and specification are formed in rib belt lap joint positions. The construction method based on the interlocking type ecological geogrid comprises eight steps. The structure is simple, the construction method is convenient, the reinforcing effect and greening effect of the geogrid on a rock-soil side slope can be effectively improved, waterand soil loss can be effectively treated, meanwhile, double benefits of side slope reinforcing and ecological protection can be achieved, the requirement for modern green engineering development is met, and important engineering significance is achieved.

The invention discloses a novel reinforcing device for a reinforced concrete bridge and a bridge deck. The novel reinforcing device comprises a U-shaped steel hoop part used for tightening the reinforced concrete bridge from the bottom up, and two bolt parts which are fixedly embedded below the bridge deck and respectively connected with two ends of the steel hoop part, wherein the bolt parts are locked with the steel hoop part through the support nuts. Due to the adoption of the technical scheme, the novel reinforcing device can pre-tighten and lock together the reinforced concrete bridge and the bridge deck through the connecting of the steel hoop part and the bolt parts in a matched manner. Compared with the prior art, the novel reinforcing device has the advantages that a stress lagging effect of a traditional device can be effectively avoided, maintains the effectiveness of the anchoring, ensures reinforcing effect, improves the shear strength of the reinforced concrete bridge, is simple in structure and easy to implement, and strong in comprehensive practicability. The invention also provides a construction method for the novel reinforcing device, which is clear and simple in procedures and can improve the construction efficiency of the novel reinforcing device.

The invention discloses a crossing high-angle thrust water-rich sand-rich fault tunnel excavation and drainage construction method. A tortuous pilot tunnel and a water release hole are formed in the same side of a front hole of a construction tunnel. The construction process includes the steps: first, preliminarily excavating and constructing a rear tunnel section; second, synchronously excavatingand constructing the rear tunnel section and a drainage hole body of the water release hole; third, synchronously excavating and constructing the rear tunnel section, the drainage hole body of the water release hole and a rear tortuous pilot tunnel section; fourth, constructing a front water release hole body, a front pilot tunnel section and a middle tunnel section; fifth, constructing a front tunnel section. The method is reasonable in design, simple and convenient in construction and good in use effect, water on an upper wall of a fault is drained by the high-level water release hole between the front hole of the tunnel and the tortuous pilot tunnel, drainage is assisted by the tortuous pilot tunnel excavated before the front hole of the tunnel, the front fault condition of a tunnel face of the front hole is verified in advance, the water in the fault can be maximally drained, water pressure in the front fault of the tunnel face is reduced, construction safety of each tunnel face can be ensured, and construction period is shortened.

The invention belongs to the technical field of foundation treatment in geotechnical engineering, and relates to a deep soft soil foundation consolidation method, in particular to an air impacting drainage and double-faced vacuum preloading consolidation method of a deep soft soil foundation. The air impacting drainage and double-faced vacuum preloading consolidation method has the advantages that the traditional drainage board is replaced by an air impacting drainage body formed by assembling and connecting the drainage board, a multifunctional pipeline, a hand type joint and a communication joint, and in an early consolidation stage, a multifunctional pipeline system is connected with a vacuum device to form a vacuum pumping system, and an upper vacuum working face and a lower vacuum working face jointly act, so that double-faced vacuum drainage consolidation is realized, the effective consolidation depth is increased, drainage consolidation is accelerated, and a construction period is shortened; in a later consolidation stage, the multifunctional pipeline system is connected with a supercharging device to form an air impacting drainage system, so that the drainability can be improved quickly and the clogging effect of the drainage board can be alleviated effectively; the problems that the effective consolidation depth is low, the drainability is limited and the clogging effect occurs when the traditional vacuum preloading technology is adopted to treat the deep soft soil foundation are solved; the overall consolidation effect of the deep soft soil foundation is ensured; and the air impacting drainage and double-faced vacuum preloading consolidation method is simple, reliable, economical and practical.

The invention discloses a consolidation method for an advance support passing through a debris flow accumulation tunnel, and the method comprises the following steps of: S1 leveling the ground surface, S2 surveying and setting out, S3 positioning by a drilling machine, S4 drilling the ground surface, S5 lowering a pipe, S6 sealing a hole, S7 surface grouting, S8 finishing surface grouting, S9 drilling a face, S10 burying a pipe, S11 grouting the face, and S12 finishing the face grouting. The grouting solution for grouting is a mixture of cement, water, water glass and retarder, the water-cement ratio is 0.7-1:1; the water glass concentration is 35-40 degrees Be, the volume ratio of the water glass to the cement slurry is 1:1; and the dosage of retarder is 11-11.5 kg / m3. By using the methodof the invention, the problem of water seepage and rock mass stability in the pre-excavation section before passing through the debris flow accumulation tunnel can be effectively prevented, and the weak and broken surrounding rock of the tunnel is effectively strengthened and stopped, and the number of grouting operations is small, the grouting range is wide; the construction period is short, andthe safety of tunnel construction is ensured.

The invention relates to a treatment method of the bedding soft soil of existing circular shield tunnel aiming to solve the technology issue on the stratum subsiding of the auger ground, which relates to the civil construction technology field. The method comprise: drilling downward two eudipleural grouting pipes in the left and right sides of the circular shield tunnel; compelling the spoil disposal with the adaptation of MJS construction method from the bottom to the top; reinforcing the concrete and slurry with the swing grouting method; and forming concrete reinforced bodies in the left and right of the bottom-left of the circular shield tunnel and the bottom-right of the circular shield tunnel. The method won't ruin the existing circular shield tunnel and can solve the stratum subsiding of the auger ground.