37results about How to "Expand the scope of reinforcement" patented technology

The invention discloses side slope reinforcing method and structure. The side slope reinforcing method comprises a step of building a concrete anti-shear structure in a slope body. The side slope reinforcing method is characterized in that the concrete anti-shear structure is an integral structure comprising anti-shear tunnels, anchored tunnels and displacement inclined shafts, wherein the anti-shear tunnels and the anchored tunnels are formed through pouring; a plurality of layers of the anti-shear tunnels are arranged at intervals along the strike direction of a slip crack surface in a compressive-shear area of the slip crack surface as seen from the side surface of the concrete anti-shear structure, and each layer of the anti-shear tunnels all horizontally extend on the slip crack surface; a plurality of the anchored tunnels are arranged at intervals along the strike directions of the anti-shear tunnels on the selected anti-shear tunnels as seen from the front surface of the concrete anti-shear structure, and the anchored tunnels all penetrate through the anti-shear tunnels along the directions facing to the slip crack surface; and besides, the two layers of anti-shear tunnels are connected into an integer through a plurality of the displacement inclined shafts extending between the selected upper and lower layers of the anti-shear tunnels along the slip crack surface. The integer formed by the anti-shear tunnels, the anchored tunnels and the displacement inclined shafts through the pouring is suitable for treating a large-size rocky high-steep side slope with deeper burial depth on the slip crack surface.

A repetitive self-adaptive grouting system and its construction method. The grouting system includes an open-circuit or closed-circuit grouting system consisting of a grouting pipe with a pressure-opening check valve, an adjustable pressure grouting pump, a cleaning pump, and an anchor hole. system, repeating segmental pressure regulation and secondary splitting grouting for the bolts that have completed the hole-forming grouting of the bolts. Change the splitting grouting pressure by adjusting the pressure grouting pump to open the grouting valves at different positions on the grouting pipe to complete the splitting grouting at a specific position, then use the cleaning pump to clean the grouting pipe, and repeat the adjustment for the pressure grouting pump Different pressures are used to open the grouting valves at different positions to split the grouting again, and this process is repeated many times to complete the multiple grouting splitting design requirements. The application system and its construction method finally realize the splitting of the bolt by multiple staged pressure grouting, increase the side friction resistance of the bolt, improve the load bearing capacity of the bolt, and reduce the deformation of the bolt, so as to effectively deal with the weak soil and rock layers The reinforcement can effectively enhance the entire anchoring system.

The invention discloses a ground pre-grouting reinforcing process for subway tunnel surrounding rock. The ground pre-grouting reinforcing process comprises the following steps that (1) the subway tunnel surrounding rock range needing to be reinforced is determined as a target rock body area; (2) an oblique hole making section is constructed, specifically, oblique drilling holes are constructed close to the target rock body area from far to near, gradually become horizontal drilling holes in a transition mode and are internally provided with sleeves; (3) a horizontal grouting section is constructed, specifically, the horizontal holes are constructed, and a horizontal drilling section is determined according to the length of the pre-grouting reinforced surrounding rock; (4) grouting reinforcing is conducted, specifically, grout is conveyed into a target rock body through a drilling rod; and (5) after grouting of all the horizontal drilling holes is completed, the sleeves in the oblique drilling holes are pulled out, and then hole sealing is conducted. By adoption of the ground pre-grouting reinforcing process for the subway tunnel surrounding rock, the subway tunnel surrounding rock can be effectively reinforced, the phenomena such as surrounding rock collapse or roof fall after subway tunnel excavation are prevented, subway construction efficiency is improved, and the supporting effect of the subway tunnel surrounding rock is improved.

The invention relates to a dangerous rock body anchor net supporting method. The method comprises the following steps that (1), hole setting out and hole drilling are performed on a slope dangerous rock body according to a design drawing, wherein drilling holes comprise anchor rope drilling holes and anchor rod drilling holes; (2), anchor ropes are arranged and anchored in the anchor rope drillingholes, and anchor rods are arranged and anchored in the anchor rod drilling holes; and (3), a protection net is stretched on the dangerous rock body, wherein the protection net comprises supporting ropes and a net body connected to the supporting ropes, and the supporting ropes are fixed to the dangerous rock body through the anchor rods and the anchor ropes. According to the dangerous rock bodyanchor net supporting method, the anchor ropes, the anchor rods and an active net are combined, and the flexible anchor ropes and the rigid anchor rods are combined for supporting, so that the methodis applicable to supporting of large-scale dangerous rock bodies.

The invention discloses a device for reinforcing a foundation through microbial ultrasonic grouting and a construction method thereof. The device comprises a grouting pipe, the upper side of the grouting pipe is connected with an ultrasonic energy concentrator, the ultrasonic energy concentrator comprises an ultrasonic amplitude transformer and an ultrasonic transducer, the ultrasonic transducer is connected with the upper end of the ultrasonic amplitude transformer and the upper end of the grouting pipe, a pulse generator is arranged at the bottom of a grouting hole, an ultrasonic sensor is arranged on the ground on one side of the grouting pipe, the ultrasonic sensor is connected with an oscilloscope, the upper end of the grouting pipe is connected with a grout inlet pipe, the grout inlet pipe is connected with two grout inlet barrels through a grouting pump, and the two grout inlet barrels are filled with bacterial liquid and cementation solution respectively. According to the device, the reinforcement uniformity can be improved, deeper soil bodies can be reinforced, grout can be diffused to the periphery from the grouting pipe with holes in the pipe wall in cooperation with the ultrasonic effect, the reinforcement range is larger, the integrity is higher, the reinforcement uniformity is guaranteed, and the applicable soil body types are wide.

The invention discloses a rock cross-cut coal uncovering method with horizontal jet grouting piles for reinforcement. The method is applicable to medium-thickness coal seams with outburst risks and includes the steps: stopping tunneling when a minimum normal distance between a working face of coal uncovering and an uncovered coal seam is smaller than 7m; using a drilling rig for drilling holes, penetrating a coal seam roof, in the working face of coal uncovering; connecting with a gas extraction pipe for gas extraction; when gas content and gas pressure are reduced to permitted ranges, using a jet grouting pile machine for realizing horizontal jet grouting of each drill hole to form firm horizontal jet grouting piles in the drill holes, so that coal seam reinforcement range is widened while coal seam reinforcement strength is improved greatly, and coal seam outburst risks are reduced; after the horizontal jet grouting piles are thoroughly solidified, continuing to tunnel until a whole coal uncovering process is finished. The rock cross-cut coal uncovering method with the horizontal jet grouting piles for reinforcement has the advantages of safety and quickness in completion of coal uncovering operations and reduction of input of manpower, material resources and financial resources.

The invention relates to a high-performance rotary jet drill. The high-performance rotary jet drill is mainly used in construction of bridge engineering, municipal engineering, water supply and drainage engineering, tunnel engineering and civil building engineering. The high-performance rotary jet drill comprises a drill pipe, an inner core, a nozzle sleeve, an alloy nozzle, a sealing disc, a seal ring and a drill. The high-performance rotary jet drill has the characteristics that the engineering cost is reduced, the construction period is shortened, and the construction effect is good; the range of cement paste and protective gases is farther at the same pressure, the rotary jet diameter is large, the diameter of the nozzle of the high-performance rotary jet drill is large, the rotary jet range is added, and the construction effect is good; the problems that the jet distance cannot be met, the working conditions are complex and the construction quality cannot be guaranteed through traditional rotary jet are solved; construction is easy, the construction cost is reduced, solidified bodies formed through jet flow are flexible in shape, and various solidification requirements are met; and the design requirements can be met, the construction quality is greatly improved, and the high-performance rotary jet drill has positive significance for improving the construction environment of workers.

The invention relates to the technical field of pipe-jacking construction, in particular to a pipe-jacking well opening soil body reinforcing process for a soft soil foundation, and relates to the technical field of pipe jacking construction. Soil bodies around the pipe-jacking well opening are reinforced by two ways: tamping and compaction grouting. In the tamping step, the soil bodies around a pipe jacking well opening are tamped in the advancing direction of a jacking pipe, and then a pit left after tamping is filled and leveled up with soil, then the next round of tamping is conducted, and soil filling and tamping are conducted circularly till the condition of stopping circulation is met. The method has the effect of improving the defects of long construction period, high cost and low tunneling efficiency when a pipe jacking machine goes in and out of the opening of the pipe jacking well.

The invention discloses a moving device for controlling upward floating of a shield tunnel and a reinforcing method, the moving device at least comprises battery cars, water storage tanks, drainage pipes, sheet-shaped steel frames and profile steel connecting pieces, and the water storage tanks are erected on the bodies of the battery cars; each duct piece hole in the shield tunnel duct piece is connected with the water storage tank through a drainage pipe; the multiple sets of sheet-shaped steel frames are arranged in the radial direction of the shield tunnel and arranged between the periphery of the water storage tank and shield tunnel segments. The profile steel connecting pieces are connected with the sheet-shaped steel frames in the radial direction of the shield tunnel. The reinforcing method comprises the following steps: (1) draining water in the tunnel hole through the duct piece holes; (2) a plurality of battery cars are adopted in the tunnel to support the water storage tank, and all sets of sheet-shaped steel frames and profile steel connecting pieces on the periphery of the water storage tank serve as steel frame supports and are used for reinforcing and supporting shield tunnel segments; the method has the advantages of rapidness, mobility, real-time performance and the like, floating of the shield tunnel can be controlled, and the safety of the shield tunnel structure is ensured.