5results about How to "Improve pore forming efficiency" patented technology

The present application relates to pile foundation engineering technical field, especially to a kind of rectangular pile intelligent hole-forming equipment, comprising: main rack, the main rack includes: the cross section control support of rectangular frame structure and swing shaft across the both sides of cross section control support;The horizontal cross-sectional dimension of the cross section control support is matched with target pile hole size;Cutting drilling assembly, the cutting drilling assembly includes: power support and multiple groups of horizontal arrangement cutting drill bit group;The through hole is equipped on the power support, and the power support is set on the swing shaft by the through hole;Swing drive mechanism, the swing drive mechanism includes: swing cylinder and limit switch symmetrically arranged on the swing shaft, and the swing cylinder is used to drive the power support;The limit switch is used to control swing amplitude;Intelligent control system, the intelligent control system includes: torque sensing piece for sensing the torque of cutting drill bit group and controller.

This invention discloses a construction control method for large-diameter bored piles in hillside soil-rock mixture strata, including the construction of a data monitoring module, the deployment of an initial parameter module, the deployment of a real-time control module, preliminary control of the construction process, dynamic prediction of the construction process, dynamic control of the construction process, and continuous model optimization. The method involves real-time acquisition of drilling parameters, mud properties, vibration signals, and slurry return parameters; deployment of an initial parameter module to generate initial construction parameters based on geological feature vectors; deployment of a real-time control module employing a two-stage hybrid intelligent model architecture to sequentially perform real-time condition diagnosis and intelligent parameter control; implementation of a construction process encompassing preliminary control, dynamic prediction, and dynamic control; and finally, system self-learning through continuous model optimization. This method transforms the construction process from static experience-based dependence to dynamic intelligent control, effectively preventing problems such as borehole collapse and deviation, and significantly improving borehole quality, construction efficiency, and safety.

The invention discloses a steel pipe pile combined cofferdam structure for a cross-sea tunnel and a construction method, and belongs to the technical field of steel pipe pile cofferdams, the steel pipe pile combined cofferdam structure comprises a plurality of steel pipe piles in a head-to-tail closed shape, every two adjacent steel pipe piles are connected through a lock catch assembly, ton bags are stacked in an area defined by the steel pipe piles, and the ton bags are connected with the steel pipe piles. The ton bags are filled with sand materials, and the ton bags are used for carrying out back pressure supporting on the inner sides of the steel pipe piles. The construction method has the effects that the construction cost of the cross-sea tunnel cofferdam is reduced, and the construction efficiency is improved.

This invention relates to the field of pile foundation construction technology and discloses a construction method for improving the bearing capacity and durability of mixed-pile foundations in hard strata. The method includes driving a first set of drill rods to drive a soil-breaking drill bit into the strata while simultaneously injecting fluid for cooling. After reaching the target elevation, the drill is lifted upwards, and cement grout, curing agent grout, or water is injected into the hole during the lifting stage. A second set of drill rods is then used to drive a multi-directional mixing drill bit downwards while simultaneously injecting grout, performing multi-dimensional cross-shearing and mixing of the in-situ fractured rock and soil with the grout. The multi-directional mixing drill bit is controlled to rotate in the opposite direction and lifted out of the hole; grouting can be performed or stopped during the lifting stage. Before the mixed medium in the hole initially sets, the precast pile is implanted to the target elevation. This invention employs an in-situ soil-breaking process without slag removal combined with an alternating blade reverse mixing technology using inner and outer pipes. This overcomes the excessive cutting resistance in hard strata and the phenomenon of mud clumps trapping at the bottom of the hole, achieving uniform forced mixing of the medium in the hole, reducing the pile penetration resistance, and improving the overall bearing capacity of the composite pile.

The utility model discloses a boulder treatment drill cylinder additionally provided with an elastic rod mechanism, which has the following beneficial effects that the elastic rod blocking mechanism is additionally arranged on the drill cylinder, the elastic rod blocking mechanism is arranged at the position close to a cylinder opening at the lower end of the drill cylinder, and the elastic rod blocking mechanism is provided with an inlet for boulders to pass through. When the drill cylinder encounters a boulder, the drill cylinder applies pressure to the boulder, the boulder enters the cylinder cavity of the drill cylinder from the inlet of the elastic rod blocking mechanism at the cylinder opening of the drill cylinder, in the drill lifting process, the elastic rod blocking mechanism blocks the boulder and prevents the boulder from falling off, and therefore the boulder is lifted out of a drill hole together. The drilling boulder can be effectively processed, and the hole forming efficiency is improved.