40results about How to "Simplify on-site construction process" patented technology

The invention discloses a pressure-control drilling system utilizing an automatic shunt manifold for pressure-control drilling and a corresponding pressure-control drilling method. The pressure-control drilling system comprises a drilling spool, a rotary control head, a drilling column, an automatic shunt manifold, an automatic throttle manifold and a throttle manifold; the drilling spool, the rotary control head and the drilling column are arranged at a wellhead at the upper part of a mineshaft; and the automatic shunt manifold, the automatic throttle manifold and the throttle manifold respectively communicate with the drilling column, a by-pass pipeline of the rotary control head and a by-pass pipeline in the blowout direction of the drilling spool. Due to the arrangement ways of all the manifolds and the mutual opening / closing matching between hydromatic valves and check valves arranged on all the manifolds and the utilization of a drilling fluid pump equipped for a drilling crew at present, the pressure-control drilling operation is realized; and through controlling the automatic shunt manifold for pressure-control drilling in connection making and tripping processes, the fluctuation of bottom hole pressure can be reduced, the control capacity for the bottom hole pressure can be improved, the no-drilling time can be shortened, the drilling cost can be reduced, and the operation incapability caused by a fault of a pressure return pump can be avoided.

The invention provides a formwork for a cast-in-place assembly type filler wall and a construction method, wherein the formwork comprises a bracket (4), the left upper end of the bracket (4) is connected with a bottom formwork (12) through a separable suspension type semicircle hinge (11), a soffit formwork (7) is arranged above the bottom formwork (12), a fixing foot (6) is arranged at the left lower end of the bracket (4), and a moving wheel (5) is arranged at the right lower end of the bracket (4). A cast-in-place wallboard (1) takes a quick setting material (2) as a base material, a movable and turnable formwork (3) is used to conduct cast-in-place and rapid setting and forming, and then the quick setting material is fixed on floors at the upper and lower ends or a beam through moving and turning in place. According to the invention, the comprehensive economic indicator and the construction period are superior to those of the conventional aerated concrete brick filler wall and a hollow internal-model metal mesh cement internal parting wall, the advantages of quick construction, low cost and simple site operation process are achieved, and the defects of the prior art are made up.

The invention discloses a PCSC shear joint structure of a plate girder overall assembly type composite beam bridge. A steel beam is provided with a longitudinal side baffle. A precast concrete bridgechannel plate is located behind the steel beam and is located on the top of the longitudinal side baffle. A longitudinal perfusion space is formed between the precast concrete bridge channel plate andthe steel beam. The precast concrete bridge channel plate is fixedly connected with the steel beam by using a shear joint structure in a longitudinal perfusion mode between the precast concrete bridge channel plate and the steel beam. According to the PCSC shear joint structure of the plate girder overall assembly type composite beam bridge, by using pressure perfusion, a longitudinal perfusion space is formed and the longitudinal perfusion space is combined with concrete to form steel-concrete composite beams, and then all the steel-concrete composite beams are pushed to the corresponding bridge piers to be in position in the longitudinal direction, and assembly type combination of an overall precast concrete bridge channel plate unit and an overall steel beam unit is achieved. An assembly type industrialization bridge construction method that the steel-concrete composite beams are constructed in a factory and the fact that all the steel-concrete composite beams are pushed to the corresponding bridge piers to be in position in the longitudinal direction can be achieved. All the advantages of the PCSC shear joint structure are achieved. The three problems of the high working amount of welding on a site, extremely high accuracy requirements of adaptation of manufacture and poor fatigue resistance of inconel weld are overcome.

The invention discloses an underground reservoir artificial dam body and coal pillar dam body connecting structure and further discloses a construction technology of the underground reservoir artificial dam body and coal pillar dam body connecting structure. The underground reservoir artificial dam body and coal pillar dam body connecting structure comprises an artificial dam body and a coal pillar dam body. A dam body groove is formed in the coal pillar dam body and provided with a groove oblique surface, and an acute angle is formed between the extending directions of the groove oblique surface and the artificial dam body. Anchor rod drill holes are formed in the groove oblique surface, and the extending directions of the anchor rod drill holes are perpendicular to the extending direction of the groove oblique surface. An inverted-hook-type grouted anchor rod is fastened in each anchor rod drill hole, and a plurality of reinforcement framework beams are arranged in the artificial dambody. The two ends of each reinforcement framework beam are in fastening connection with the ends of the inverted-hook-type grouted anchor rods on the two sides of the reinforcement framework beam correspondingly. According to the underground reservoir artificial dam body and coal pillar dam body connecting structure and the construction technology thereof, the connecting strength and stability are improved, and the construction technology is further simplified.

The invention discloses a filling paste slurry suitable for a tunnel construction goaf. The filling paste slurry is mainly prepared from a clay mud, a cement and water; the clay mud is prepared by stirring clay and water, a modifier is added in the filling paste slurry, the modifier comprises meta-aluminate and lignosulfonate, the mixing amount of the meta-aluminate is 0.5-1.5% of the mass of the cement, and the mixing amount of the lignosulfonate is 0.2-0.4% of the mass of the cement. The filling paste slurry is high in stone rate, has a good filling effect, and is environmentally friendly, convenient to prepare, and suitable for filling the tunnel construction goaf, the raw materials are cheap and easy to get, the setting time is controllable, the on-site construction operation is simple, and then a tunnel safely goes through the goaf.

The invention relates to a ceiling hanging keel, which includes a keel body, and the keel body sequentially includes a first installation part, a connecting block, a cavity and a second installation part from top to bottom; the upper left and right sides of the keel body are provided with There is a first installation part, and the first installation part is used to connect with the large keel hanger; the connection block includes a vertical connection block and a horizontal connection block, and the horizontal connection block is provided with an installation hole; the connection block The lower part is provided with a cavity for threading, and the left and right sides of the upper part of the cavity are provided with hanging arms for connecting with decorative pendants; the left and right sides of the cavity are provided with mounting grooves for installing buffer pieces; The left and right sides of the lower part of the keel body are provided with second installation parts for connecting the decorative panels; the upper part of the second installation part is provided with a support surface for supporting heavy panels. The keel of the invention is formed by extruding light steel, not only has few components, but also has excellent mechanical properties, and can bear ceiling decorative panels of different weights.