30results about How to "Reduce drilling depth" patented technology

The invention provides a dam foundation deformation depth monitoring method. (1) three inverted plumb line measuring instruments of different depths are vertically and downwards arranged in a dam body observation room arranged at a dam foundation monitoring position, and the plumb line depths are between 10% and 15% of the dam height; (2) through the monitoring results of the inverted plumb lines of different depths on the dam foundation, a calculation model of plumb line depths and deformation is built, so that deformation of different depths of the dam foundation is calculated, and the theoretical maximum deformation of the dam foundation is calculated at the same time; (3) the ratio between the deformation of different depths of the dam foundation and the theoretical maximum deformation of the dam foundation is calculated, and when the ratio reaches 98%, the corresponding depth is the deformation depth of the dam foundation. The inverted plumb lines of different depths are arranged on the dam foundation, the calculation model of the plumb line depth and the deformation is built, and therefore the deformation depth of the dam foundation is calculated, and the problem that an instrument and method for monitoring dam foundation deformation depth do not exist is solved.

The invention provides a dual-U-shaped tubular heat exchanger for a soil source heat pump system. The dual-U-shaped tubular heat exchanger comprises a dual-U-shaped tube, multiple layers of heat tubeassemblies are axially and evenly arranged on the outer all of each vertical tube of the dual-U-shaped tube at intervals, the inner side ends of the heat tube assemblies penetrate through the outer walls of the vertical tubes to be inserted into the vertical tubes, and sealing treatment is conducted on the joints of the inner side ends of the heat tube assemblies and the outer walls, wherein annular heat tubes or multiple heat tubes can be adopted as the heat tube assemblies. According to the dual-U-shaped tubular heat exchanger for the soil source heat pump system, heat exchange between a medium in the U-shaped tube and soil is strengthened through the good heat conduction property of the heat tubes, the heat exchange efficiency is obviously improved, therefore, the drilling depth can bedecreased, then investment is reduced, and most of the heat exchange process is completed in the shallow stratum.

The invention belongs to the technical field of bearing machining, and discloses a bearing ring inclined oil hole machining tool. The bearing ring inclined oil hole machining tool comprises a rack, a step hole is formed in a table top of the rack, the table top of the rack is an electromagnetic chuck, and a rotating mechanism and a drilling mechanism are arranged above and below the table top of the rack; the rotating mechanism comprises a first rotary disc and a second rotary disc which are rotationally connected to the rack, rotating centers of the first rotary disc and the second rotary disc are coincident with a center shaft of the step hole, a first through hole is formed in the first rotary disc, a second through hole is formed in the second rotary disc, and the turning radius of the first through hole is larger than the turning radius of the second through hole; the drilling mechanism comprises a rotating rod and electric drills, the two electric drills are staggered in the circumferential direction of a bearing ring, and the sum of the drilling depths of the two electric drills is equal to the depth of a bearing ring inclined oil hole; and the rack is further provided with a rotating parking mechanism which comprises a plurality of microswitches and trigger blocks. When the bearing ring inclined oil hole machining tool is used for machining the bearing ring inclined oil hole, positioning is accurate, and the machining difficulty is small.

A semiconductor structure includes an insulating layer, a plurality of stepped conductive vias and a patterned circuit layer. The insulating layer includes a top surface and a bottom surface opposite to the top surface. The stepped conductive vias are disposed at the insulating layer to electrically connect the top surface and the bottom surface. Each of the stepped conductive vias includes a head portion and a neck portion connected to the head portion. The head portion is disposed on the top surface, and an upper surface of the head portion is coplanar with the top surface. A minimum diameter of the head portion is greater than a maximum diameter of the neck portion. The patterned circuit layer is disposed on the top surface and electrically connected to the stepped conductive vias.

The invention discloses a method for measuring horizontal displacement of a stratum through a movable inclinometer. The movable inclinometer is used for measuring total horizontal displacement and horizontal shift displacement, and the horizontal displacement of the stratum is calculated according to measurement numerical values. The invention further discloses the movable inclinometer. The movable inclinometer comprises a measurement reader, a GPS position finder, an inclinometer tube, an inclinometer cable, a cable support and a GPS position finder connecting sleeve. The measurement reader is located on one side of the inclinometer tube, the measurement reader and the inclinometer tube are independently arranged, the inclinometer cable is installed on the cable support, the GPS position finder connecting sleeve is fixed to the upper end of the inclinometer tube, one end of the inclinometer cable penetrates through the GPS position finder connecting sleeve and is connected with a movable probe in the inclinometer tube, at least one GPS position finder is arranged on the GPS position finder connecting sleeve, and the cable support is provided with Bluetooth used for transmitting signals received by the inclinometer cable to the measurement reader. By means of the method for measuring the horizontal displacement of the stratum through the movable inclinometer and the movable inclinometer, the drilling depth can be effectively reduced, economic cost can be reduced, the measurement data can better conform to field reality, and a more reliable base is provided for slope and foundation pit retaining and protection construction.

The invention discloses an angle-adjustable engineering geological drilling rig. The engineering geological drilling rig comprises a base, a rotary tower, a winding machine and a drill rod component, wherein the bottom end of the rotary tower is hinged to the base and is provided with a tower locating device, and a fixed pulley is arranged at the top of the rotary tower; the winding machine is fixedly arranged on the base, a steel wire rope connected with the winding machine bypasses the fixed pulley and is connected with the drill rod of the drill rod component so as to realize punching promotion; the drill rod component is connected with the base through a detachable drill rotating disk, the rotating plane of the drill rod component is parallel to the rotating plane of the rotary tower, and a travelling device is arranged at the bottom of the base. According to the angle-adjustable engineering geological drilling rig, the existing engineering geological drilling rig can be improved, and the angle-adjustable engineering geological drilling rig is reasonable in structure, low in cost and high in usability; furthermore, inclined holes in any angle can be drilled by adjusting the angle between the rotary tower and the drill rod component, so that the work efficiency of the engineering geological drilling rig is greatly improved.

The invention relates to a wedge type inner anchor head, which comprises an anchor rod, multiple wedge blocks arranged surrounding the circumference of the outer wall of the anchor rod, and wedge seats sleeving the anchor rod, wherein one side, close to the outer wall, on the bottom part of each wedge block is hinged to the anchor rod; the wedge seats are located below the wedge blocks; the top surface of each wedge seat comprises a No.1 inclined plane, a horizontal plane and a No.2 inclined plane which are connected sequentially; the No.1 inclined plane and the No.2 inclined plane of each wedge seat are symmetrically arranged on two sides of the corresponding horizontal plane; included angles respectively formed between each No.1 inclined plane and the axis of the anchor rod as well as between each No.2 inclined plane and the axis of the anchor rod are acute angles; the anchor rod penetrates through the wedge seats through the horizontal planes so as to extend to the outer parts of the wedge seats. The wedge type inner anchor head is not only safe and reliable, and good in durability, but also beneficial to ensuring the anchoring force of the inner anchor head.

The invention relates to the building wall insulation system construction technology, and specifically refers to a pre-fixed plate system wall insulation system construction technology; the core of the technology is to use a drilling, pre-buried or bonding mode to lead out vertical outward thread rod from a base wall; the thread rods are bonded or hung with one or more layers of insulation plates; an outer side of the insulation plate is provided with thread caps in a screwing or knocking mode, thus firmly fixing the insulation plates on the base wall; then later polishing-plastering netting steps are followed. The pre-fixed plate system wall insulation system construction technology solves seepage and virtual fixation disadvantages of the conventional technology, optimizes a construction flow, ensures engineering quality, reduces construction cost, and has wide application in civil building and cold storage engineering.

The invention discloses a partially upsetting high-strength steel wire and a preparation method thereof, belonging to the technical field of construction. The local upsetting shape of the steel wire can be spherical, ellipsoidal or other polygonal, and the corresponding longitudinal section shape is circular, elliptical or other polygonal. At other positions near the end of the steel wire or in the middle, after making several local upsettings, the anchoring strength between the steel wire and the anchor can be enhanced, the anchorage length can be shortened, the performance of the component can be improved, and steel resources can be saved. After local upsetting is made on the steel wire, other parts can be installed on the steel wire. After multiple steel wires are partially upset at the same position, a platform can be installed for decoration, office and other occasions. The manufacturing method provided by the invention is to use hydraulic pressure to extrude in the upsetting die of the upsetting machine. The invention can be used for anchor rods, prefabricated concrete components, stay cables and hangers, storage racks and the like.

The invention provides a dam foundation deformation depth monitoring method. (1) three inverted plumb line measuring instruments of different depths are vertically and downwards arranged in a dam body observation room arranged at a dam foundation monitoring position, and the plumb line depths are between 10% and 15% of the dam height; (2) through the monitoring results of the inverted plumb lines of different depths on the dam foundation, a calculation model of plumb line depths and deformation is built, so that deformation of different depths of the dam foundation is calculated, and the theoretical maximum deformation of the dam foundation is calculated at the same time; (3) the ratio between the deformation of different depths of the dam foundation and the theoretical maximum deformation of the dam foundation is calculated, and when the ratio reaches 98%, the corresponding depth is the deformation depth of the dam foundation. The inverted plumb lines of different depths are arranged on the dam foundation, the calculation model of the plumb line depth and the deformation is built, and therefore the deformation depth of the dam foundation is calculated, and the problem that an instrument and method for monitoring dam foundation deformation depth do not exist is solved.