12 results about "Trenchless technology" patented technology

The invention provides a method and system for calculating soil deformation caused by double-line parallel pipe jacking construction, and relates to the technical field of pipe jacking non-excavation, and the method comprises the steps: obtaining design parameters and geological parameters of a double-line parallel pipe jacking; calculating the absolute volume loss per unit length of the single-line jacking pipe based on the design parameters and the geological parameters of the jacking pipe; on the basis of a random medium theory, regarding the absolute volume loss amount as a settlement source of three-dimensional Gaussian distribution, and establishing transverse, longitudinal and vertical settlement formulas; integral combination is carried out based on transverse, longitudinal and vertical soil settlement formulas to obtain a settlement expression of any spatial point of the single-line jacking pipe; coordinate adjustment is conducted according to the horizontal distance between the centers of the two jacking pipes, the settlement values of the two single-line jacking pipes are linearly superposed, and the total soil settlement caused by the double-line parallel jacking pipes is obtained. According to the method, multi-dimensional and high-precision prediction of double-line parallel pipe jacking construction soil deformation is achieved, and theoretical support is provided for safety assessment of underground pipe network construction.

The application discloses a sandbank short-distance entry section pipe-pulling construction method, which comprises the following steps: S1, preparation before construction; S2, measurement and lofting; S3, well chamber foundation pit construction; S4, equipment positioning and guide drilling; S5, hole expansion and mud hole blocking; S6, secondary hole expansion and hole cleaning; S7, pipe welding, pipe pulling back, and high-pressure grouting; S8, mud cleaning, pipe cutting at the well access, and equipment transfer; and S9, well chamber construction, foundation pit backfilling and cleaning. The application makes full use of the sandbank short-distance entry section pipe-pulling construction method, reasonably uses the trenchless technology to solve the problems of one-end construction site obstruction, pipe-pulling pipe hole forming failure, pipe-pulling construction resistance being too large, pipe deformation being affected by flowing sand and water level, sand surface appearing grouting and settlement, and the like, solves the problems of high cost and inability to carry out pipe jacking construction under the condition of shallow covering, and realizes the pipe-pulling construction of the entry section.

The invention relates to a construction method of a pipeline external anti-corrosion damage protection system, and relates to the technical field of construction engineering non-excavation, and the construction method mainly comprises the following steps: excavating a deep well, arranging anode bodies at intervals on the outer wall of an exhaust pipe before the exhaust pipe is lowered into the deep well, connecting the anode bodies in series through a cable and binding the anode bodies on the outer wall of the exhaust pipe, the anode body and the exhaust pipe are lowered to the bottom of the deep well together, and after the anode body and the exhaust pipe are completely lowered, the anode body and the exhaust pipe are installed; installing a power-on point and a reference electrode at the pre-protection pipeline; cable connection and laying are carried out; according to the method, debugging and testing are carried out, installation of the pipeline external anti-corrosion damage protection system is completed, the mode that no sleeve is arranged is adopted, the anode bodies arranged in series are bound to the exhaust pipe and put down together with the exhaust pipe, the pipeline protection effect is guaranteed on the basis that well wall disturbance is reduced, and well wall collapse is avoided, and the construction efficiency is improved.

The utility model discloses a directional drilling fluid viscosity measuring device based on a trenchless technology, which relates to the technical field of directional drilling fluid viscosity measurement and is technically characterized by comprising a four-hole fixed bottom plate, the adjustable supporting rack is mounted on the left side of the upper end of the four-hole fixing bottom plate through screws; the measuring and discharging mechanism is mounted and connected to the inner side of the front end of the adjustable supporting rack; the vertical sensing mechanism is installed and connected to the upper end of the measuring and discharging mechanism, and the technical effects are that the vertical sensing mechanism can sense and measure the directional drilling fluid spacing of the non-excavation technology in the discharging mechanism, and data are recorded through the change of different spacing; therefore, corresponding viscosity data can be effectively calculated according to the data, and the overall detection accuracy is effectively improved through vertical liquid level detection.

The invention relates to a non-excavation anti-sedimentation well lid height difference regulation method and system. Comprising the following steps: performing field investigation and data acquisition, and preparing a corresponding tool according to the acquired data; installing a well mouth gas insulation airbag, monitoring the concentration of combustible materials in the well lid in real time, and predicting the time when the concentration of the combustible materials reaches a safety threshold value; after the concentration of the combustible gas reaches a safety threshold value, a high-frequency coil is installed, and the high-frequency coil is controlled to heat and soften wellhead asphalt through fuzzy PID; physically separating the well lid; heating asphalt around the well lid opening by adopting far infrared heating, and constructing a heat conduction model to predict the temperature condition of the surrounding asphalt until the asphalt is heated to a preset temperature; according to the non-excavation technology provided by the invention, the pavement repairing time can be shortened, the single-point operation time is shortened to be within 3 hours, the influence on traffic is reduced, and compared with a traditional excavation maintenance method, the cost can be saved by 40%, and the carbon emission is reduced by 75%.

The invention relates to the technical field of construction engineering non-excavation, in particular to an anti-winding and uniform stress distribution control method for synchronous back dragging of an HDPE pipe group. The method specifically comprises the steps that in pipe group back dragging construction, a beam splitter is connected to the rear end of a reamer, HDPE pipes are inserted into rigid channels corresponding to the beam splitter correspondingly, so that the pipe group serves as an integral system to conduct back dragging construction, stress monitoring is conducted on the HDPE pipes in the back dragging process with the assistance of a stress monitoring device, and grouting flow is controlled through a grouting pump system; and the pipeline friction force in the back dragging process is reasonably reduced. The beam splitter is arranged and the stress of the pipe group is monitored in the pipe group back dragging construction, so that the winding possibility of each HDPE pipe is reduced, the construction process can be monitored, the stress balance of each pipe in the back dragging process is ensured, the overload risk of a single pipe is reduced to the minimum, the HDPE pipe is prevented from being damaged in the back dragging process, and the service life of the HDPE pipe is prolonged. And on the whole, the construction accident rates of winding, pipe clamping, snapping and the like during back dragging construction of the HDPE pipe group are greatly reduced.

This invention provides a method and system for calculating soil deformation caused by double-line parallel pipe jacking construction, relating to the field of trenchless pipe jacking technology. The method includes: obtaining the design parameters and geological parameters of the double-line parallel pipe jacking; calculating the absolute volume loss per unit length of a single-line pipe based on the design and geological parameters; establishing lateral, longitudinal, and vertical settlement formulas by treating the absolute volume loss as a three-dimensional Gaussian distribution settlement source based on stochastic medium theory; performing integral combination of the lateral, longitudinal, and vertical soil settlement formulas to obtain the settlement expression for any spatial point of the single-line pipe jacking; adjusting the coordinates according to the horizontal distance between the centers of the two pipes, and linearly superimposing the settlement values ​​of the two single-line pipes to obtain the total soil settlement caused by the double-line parallel pipe jacking. This invention achieves multi-dimensional and high-precision prediction of soil deformation during double-line parallel pipe jacking construction, providing theoretical support for the safety assessment of underground pipeline construction.

This invention discloses a multi-technology integrated repair method for drainage pipelines with complex defects, belonging to the field of municipal engineering technology. The method includes: precise detection of complex defects and multi-dimensional data fusion modeling to generate a three-dimensional real-scene model containing geometric deformation and texture features; intelligent fusion repair scheme generation based on a defect matrix and decision rule base, outputting combined repair schemes for different units; multi-technology collaborative fusion repair construction, following a sequential process of structural reinforcement, overall lining, and then local spot repair; and closed-loop verification and feedback optimization of repair quality, feeding back quality deviation indicators to the decision rule base for parameter optimization. This invention organically integrates multiple trenchless technologies, systematically solving the repair problem of complex defects such as collapse, deformation, and corrosion occurring simultaneously within the same pipe section. It has advantages such as good repair effect, low cost, short construction period, and high degree of intelligence.

The present application relates to a kind of construction engineering trenchless technology field, in particular to a kind of HDPE pipe group synchronous back-drawing anti-winding and stress uniform distribution control method;Specifically, in the pipe group back-drawing construction, connecting beam splitter at the rear end of reamer, respectively insert HDPE pipe into the rigid channel corresponding to beam splitter, so that pipe group as a whole system is back-drawing construction, and stress monitoring device is supplemented to carry out HDPE pipe stress monitoring in back-drawing process, respectively control grouting flow by grouting pump system, reasonably reduce the pipe friction in back-drawing process.The present application sets up beam splitter and monitors pipe group stress in the pipe group back-drawing construction, reduces the possibility of winding of each HDPE pipe, makes construction process monitorable, ensures that each pipe is balanced in back-drawing process, reduces single pipe overload risk to minimum, avoids HDPE pipe damage in back-drawing process, overall greatly reduces the winding, pipe jam, breakage and other construction accident rate in HDPE pipe group back-drawing construction.

The utility model relates to the technical field of civil engineering, specifically relates to a river-adjacent bias foundation pit support structure, including the support body, the crown beam, the waist beam and the inner support, the soil body in the other side of the foundation pit support structure is provided with the beam type anchorage, one end of steel strand is connected with the beam type anchorage, after the steel strand tension, its other end is connected with the crown beam and / or the waist beam and is fixed, the utility model has the advantages of: 1) mainly using the trenchless technology implementation, not affecting the river and the influence of ground pipeline and traffic is smaller, 2) can effectively coordinate the support axial force and the foundation pit displacement through the adjustment steel strand's tension value or tension, has stronger artificial controllability, 3) can be used as the passageway of municipal pipeline after construction completion.

This invention discloses an in-situ diagenetic glazing tunnel forming equipment and method, relating to trenchless hydraulic engineering. The equipment includes a shrinkable extrusion section, a shrinkable friction sintering section, a shrinkable glazing section, and an AI (autocorrelation and thermal deformation) adaptive control system. The method employs high-pressure compaction, friction sintering, residual heat glazing, and AI shrinkage retraction to achieve zero soil discharge, in-situ diagenesis, seepage prevention and smooth surface, and free movement, making it suitable for long-distance gravity-flow water conveyance tunnel construction.

The invention belongs to the technical field of mine safety and environmental protection, and particularly relates to a tailings pond flood drainage system based on pipe jacking construction and a construction method. The system at least comprises an initial dam, and further comprises an inlet structure, a water conveying structure and an outlet structure, the inlet structure is arranged in a tailing pond area in the direction close to the upstream, and the outlet structure is arranged in a safe area outside the tailing pond downstream initial dam; the inlet structure is responsible for collecting and preliminarily purifying flood, the water conveying structure is responsible for bearing pressure and conveying the flood in a sealed mode, the outlet structure is responsible for dissipating energy, reducing speed and discharging the flood, and the three structures are connected in series to form a complete, efficient and safe tailing pond flood drainage channel. The non-excavation technology is adopted, environmental disturbance is small, the system adapts to complex geological conditions, the system sealing performance is good, the structural strength is high, the construction problem of a traditional flood drainage system can be effectively solved, and the flood control safety of the tailings pond is improved.