46results about How to "Fast grouting" patented technology

The invention provides a self-propelled tunnel grouting trolley. The self-propelled tunnel grouting trolley comprises a rack, a platform, a main girder, a traveling mechanism and lead screw lifting jacks; the rack is an open-spandrel framework and is arranged on the traveling mechanism; the main girder is arranged on the rack; the platform comprises a working platform and lower platforms; the working platform is arranged on the main girder; the lower platforms are respectively arranged under the working platform at the two sides of the rack along the direction of a tunnel; one ends of the lower platforms are vertically fixed on the rack, the upper sides of the end parts of the other ends of the lower platforms are connected with the main girder through first supports, and the lower sides of the end parts of the other ends of the lower platform are connected with the rack through second supports; the two side end parts of the working platform and the two side end parts of the lower platforms are connected on the rack through inclined struts; the lead screw lifting jacks are symmetrically arranged at the two sides of the working platform and the lower platforms; and the self-propelled tunnel grouting trolley has the advantages of being reasonable in structure, low in cost, capable of solving the traffic problem in the tunnel, realizing the synchronization of grouting, transportation and other operations, meeting the requirements of the engineering construction of diversion tunnels with large-sized cross sections and being rapid and efficient in grouting operation and capable of ensuring the construction period.

The invention discloses a grouting and anchoring construction method for prestressed anchor cables in cracked rock soil strata. A plurality of prestressed anchor cables all arranged on the same plane are used to reinforce the slope to be reinforced. The steps include: 1. The degree of development of rock mass joints and fissures is determined; 2. The length of the anchorage section and the position of the anchor cable hole are determined; the prestressed anchor cable includes the anchor cable body, the primary grouting pipe and the secondary grouting pipe. The anchor cable body includes multiple steel strands; 3. Prestressed anchor cable grouting and anchoring construction: when performing grouting and anchoring construction on any prestressed anchor cable, it includes steps: drilling, laying anchor cables, normal pressure injection Grouting, high-pressure grouting and cable tensioning and anchor sealing. The method of the invention has simple steps, reasonable design, convenient construction, high construction efficiency and good application effect, and can simply and quickly complete the reinforcement process of the slope to be reinforced. The prestressed anchor cable used has low cost and high anchoring force, and can Reinforce the slope for effective reinforcement.

A method for selectively culturing the excellent variety of rice includes such steps as choosing parent rices which has high resistance to low temp, high temp and oxygen lack, short dormant period and low optical and temp sensitivities, hydridizing, backcrossing ion beam mediated distant hybridizing for genetic recombination, and genetic modifying to its descendants.

A grouting production line, including a drying device, a grouting device, a grouting device, a grouting device, a draining device and a demoulding device; the drying device is used for emptying plaster molds before grouting and for filling The grouting plaster mold is dried; the grouting device is used to grout the empty plaster mold; the grout suction device is used to transport the full grout plaster mold to the pouring device, and the full grout plaster mold is sucked during the transportation process; the grouting device Including the pouring conveyor belt and the turning assembly laid on the pouring frame, the pouring device is used to turn over the filled plaster mold after the slurry is sucked; the draining device includes a conveying mechanism, and the conveying mechanism is used to convey the turned full plaster mold From the mold to the demoulding device, the full slurry plaster mold is drained during transportation; the demoulding device is used to perform the demoulding operation on the plaster mold. The invention realizes the automatic production of each link in the grouting production process, reduces the production cost and improves the efficiency; at the same time, it is suitable for automatic production of different manufacturers, different varieties (complex molds) and different processes.

The invention discloses a rapid injection technique to cavity among walls of compound shaft. The shaft is sectioned by injection in accordance with the frozen shaft depth, shaft wall thickness and strength and stratigraphic position of water-bearing bed, and the section has height of 100-200 m. When constructing inner layer shaft wall, pre-installing and pre-embedding a vertical sectioned injection pipe adaptable to the height of the injected section, a plurality of injection heads are equipped on the sectioned injection head and communicated with the cavity among walls of plastic interlayer, a plurality of injection points are formed at the same time at one section, the upper end of the sectioned injection pipe is connected with a delivery pipe, and the other end of the delivery pipe is connected with an injection pump via a connecting rubber pipe. The invention has the advantages of simple process, safe and reliable performance, high injection speed, high efficiency, and low cost. And, the occupied time of injection process to cavity among walls to the shaft construction is reduced by 60-90 percent, so as to shorten the shaft construction period.

The invention discloses a multi-inlet vacuum-assisted grouting system for discarded pipes, comprising a grouting tube, M grout inlets, a grout pump, an evacuating tube, N evacuating holes, and an evacuating pump. The front end of the grouting tube is connected with one end of a discarded pipe. The grout inlets are arranged in the rear end and / or sidewall of the grouting tube. The grout pump is connected with the grout inlets and is used for injecting grout into the grouting tube through the grout inlets and injecting the grout into the discarded pipe through the grouting tube. The front end of the evacuating tube is connected with the other end of the discarded pipe. The evacuating holes are provided in the rear end and / or sidewall of the evacuating tube. The evacuating tube is connected with the evacuating holes and is used for helping pump the grout from the grouting tube into the discarded pipe. The system has the advantages that grouting speed is higher, grouting power is higher, hierarchical bleeding of cement mortar is eliminated, grouting range is widened, grouting compactness and strength is improved, the potential hazard of later environmental disruption is eliminated.

The invention discloses a grouting valve at the bottom of a cast-in-situ pile for geotechnical engineering construction, which comprises a main cylinder body, a first connecting sleeve, a first connecting sleeve, an auxiliary cylinder body, a second connecting sleeve, a second connecting sleeve and Adjustment assembly; the first discharge hole is provided at the lower part of the first connection cylinder; the fifth discharge hole is provided at the bottom of the second connection cylinder; the adjustment assembly includes a mounting frame, a first connection shaft, a second connection shaft, a first connecting rod, The second connecting rod, the third connecting rod, the first mounting platform, the fourth connecting rod, the fifth connecting rod, the sixth connecting rod and the second mounting platform; the second connecting rod is arranged on the first mounting platform; the first mounting The platform is arranged on the auxiliary cylinder; the fifth connecting rod is arranged on the second installation platform; the second installation platform is arranged on the main cylinder; the main cylinder and the auxiliary cylinder are respectively provided with two parallelogram mechanisms for driving rotation. A drive mechanism that moves the main cylinder and the sub cylinder toward or away from each other. In the present invention, grouting can be performed on both sides inside and outside the reinforcement cage respectively, and the grouting is more uniform and the speed is faster.

The invention discloses a mobile mortar laying device for building construction, which belongs to the technical field of building equipment. The mobile mortar laying device for building construction comprises a mortar laying box; the bottom part of the mortar laying box is provided with mortar leaking holes; the mortar laying box is internally provided with a rotation bearing; two sides of the rotation bearing are provided with page doors; the front surface of the mortar laying box is provided with a first fixing block; the upper side of the first fixing block is provided with a display screen; the upper side of the display screen is provided with a high-definition camera; the high-definition camera is electrically connected with an infrared sensor, an orientation sensor and a central processor respectively; the central processor is electrically connected with the display screen and an ingredient detection unit respectively. According to the mobile mortar laying device for building construction, intelligent and full automatic mortar laying can be carried out, the quality of the mortar ingredient inside the mortar laying device can be detected, the mortar laying process is quick and accurate, material is divided uniformly, mortar laying is quick, the labor intensity is small, mortar laying is uniform, the mortar laying efficiency is high, and safety and stability are high.