33results about How to "Rapid Grouting" patented technology

The invention discloses a pre-explosion drilling, grouting and anchoring integrated anchor rod and construction method thereof, and belongs to geotechnical engineering. The pre-explosion drilling, grouting and anchoring integrated anchor rod consists of a sectional type drilling anchor rod, a drill bit and a sectional type hollow grouting pipe, wherein the internal hollow grouting pipe is connected with a multi-section explosive pipe at the front end of the grouting pipe; a plurality of return stoppers are arranged on the tip of the front end of the grouting pipe, which is connected with the explosive pipe; and when the integrative anchor rod is drilled to reach a specified position, a drilling rod is taken back reversely, the internal hollow grouting pipe is pushed forwards, the return stoppers work, and then the drilling rod is stopped from being taken back. A detonating cord is connected with a detonator to detonate explosive sections, a rubber stopper provided with a slurry guide pipe (exhaust pipe) follows up on the end part of the drilling rod for sealing, and a supporting liner plate, a nut and a hollow drilling rod cooperate with one another on the end part; and the supporting liner plate, through which the detonating cord penetrates, is provided with a drill way, and one section of a pipeline penetrates through the drill way of the supporting liner plate. The pre-explosion drilling, grouting and anchoring integrated anchor rod has the advantages that: the anchor integrates drilling, grouting and anchoring and molded in one step; the integrative anchor rod is applied to reinforcement of laneways, pit shafts and side slopes, and temporary or permanent supporting in water control; and the construction method has a certain promotion value.

The invention relates to a high-pressure gas multistage pre-splitting grouting transformation method for surrounding rock of deep soft rock roadways. The high-pressure gas multistage pre-splitting grouting transformation method has the advantages that the surrounding rock of the deep soft rock roadways is subjected to multistage pre-splitting by the aid of high-pressure gas, special propping agent materials are added into popping agent containers when last-stage gas pre-splitting is carried out, the particle sizes of the propping agent materials are larger than those of cement particles, the propping agent materials are used for propping crack of the artificially pre-split expanded surrounding rock, the crack can be prevented from being closed again under the effect of deep high ground stress, the groutability of the surrounding rock can be improved, then the surrounding rock with the crack can be grouted and reinforced, weak surrounding rock structures and mechanical properties of the roadways can be greatly transformed, the surrounding rock of the deep soft rock roadways can be stably controlled, and difficult problems of closing of crack of existing surrounding rock of existing deep soft rock roadways, extremely poor groutability of the existing surrounding rock and poor grouting effects can be solved; the weak surrounding rock structures and the mechanical properties can be obviously transformed and enhanced, and the bearing capacity of the surrounding rock can be improved; high-pressure gas pre-splitting holes and grouting holes of the surrounding rock are combined with one another, and the high-pressure gas multistage pre-splitting grouting transformation method is easy to operate and implement in fields.

The invention relates to a prefabricated vertical component and a sleeve grouting construction method thereof. There are multiple indicator tubes on both sides of the grouting tube. The two ends of the grouting tube and the indicator tube extend to the bottom and side of the component body respectively, and can communicate with the external space of the component body. The connection between the indicator tube and the grouting tube and the side of the component body The height of the position is higher than that of the top of the grouting sleeve, the prefabricated component and the construction method of the present invention have high construction work efficiency, and can carry out supplementary grouting, thereby ensuring engineering safety.

The invention discloses a mold-bag-filling-type anchor grouting device which comprises a hole opening hole sealing steel pipe (1), wall surface patterned holes (2), a constant pressure stopper A (3),a hole opening hole sealing mold bag (4), a grouting steel pipe (5), a constant pressure stopper B (6), reinforcing ribs (7), a hole bottom anchoring steel pipe (8) and a hole bottom anchoring mold bag (9). According to the mold-bag-filling-type anchor grouting device, an anchoring rod is divided into three parts of the hole opening hole sealing steel pipe, the grouting steel pipe and the hole bottom anchoring steel pipe, the mold bags, the reinforcing ribs and the wall surface patterned holes are arranged / formed, and by combining the characteristics that the mold bags are expanded during grouting and grout leakage is not prone to occurring, hole bottom anchoring and hole opening filling closing are achieved; through the wall surface patterned holes, cement grout and solidification grout are effectively grouted into loose wall rock; and thus, the grouting pressure is effectively increased, the broken loose wall rock is quickly filled, grouting liquid is prevented from being subjected to underground water erosion, and finally the firm mold-bag-filling-type anchor rod is formed, so that the engineering quality and the technical level are comprehensively improved.

The invention belongs to the field of settlement control of the overall ballast bed of existing long railway tunnels and the construction field of grouting reinforcement at the bottom of the tunnel. The overall ballast bed and tunnel bottom disease treatment method of support and grouting formwork adopts the construction method of first using the combined steel plate support to support the diseased section of the ballast bed, and then installing grouting formwork on both sides of the diseased section of the ballast bed to carry out disease remediation on the ballast bed and tunnel bottom . The invention organically combines the support in the early stage of disease control construction with the improvement of the grouting effect in the later stage, slows down the impact of the broken ring of the ballast bed and the bottom plate before and after the train passes, effectively fills the broken area at the bottom of the tunnel, and supports the combined steel plate to ensure The complete wrapping of the grout and the supporting steel plate achieves the purpose of quickly supporting the ballast bed in the damaged area at the bottom of the tunnel, controlling the development speed of the disease, and fast and efficient grouting to reinforce the diseased area.

A advance grouting reinforcement method for narrow coal pillars in gob-side roadways. Before mining at the working face in the upper section of the gob-side roadway, a row of drilling drills are arranged along the extension direction of the coal pillars on one side of the roadway in the upper section of the upper section that has been excavated. Borehole; use the borehole penetrometer to detect the borehole; according to the obtained pressure and displacement information in the borehole, analyze the pressure degree of the coal pillar at different depths and the development of cracks in the coal body. For the coal pillar The part with larger cracks can be directly reinforced by grouting, and the part with smaller cracks in the coal pillar can be cracked; the electric pulse device can be used to crack the part of the coal pillar with smaller cracks; observe the shock wave cracking range, until all the coal pillar cracks in the entire upper section of the roadway are cracked; on the basis of the original anchor net support of the coal pillar, grouting anchor rods are placed in the borehole to grout the inside of the coal pillar reinforcement. This method can effectively realize the advance reinforcement of coal pillars.