13results about How to "Reduce integrity" patented technology

The invention discloses a ground and underground combined protection method for an oil and gas well near a goaf, belongs to the technical field of coal mining, and aims to investigate and predict the goaf formed after mining of a coal seam working face, determine underground and ground construction positions, and then respectively perform underground and ground combined protection. According to the method, vertical drill holes are constructed underground, the integrity of a top plate is weakened to the maximum extent, the stress distribution of the top plate is changed, the caving range of the working face top plate in the oil-gas well direction is cut off, a'protective wall 'is formed on one side above the oil-gas well, and the shearing and stretching effects of earth surface movement on an oil-gas well assembly in the working face recovery process are effectively reduced; through the combined protection above and below the well, the collapse and settlement range of the goaf is effectively reduced, the stress propagation of the unconsolidated formation is cut off to achieve the purpose of reducing the influence on the oil-gas well, and the protection and treatment requirements of the oil-gas well are met.

The invention discloses an ultra-deep hole blasting-mechanical combined tunneling method for a coal mine rock roadway. The method comprises the following steps: step 1, analyzing basic mechanical properties and ground stress conditions of rocks of the excavated rock roadway; 2, the number of ultra-deep blast holes needing to be drilled in the rock drift tunneling section is determined; 3, a drilling machine is used for drilling all ultra-deep blast holes in the rock roadway tunneling section; 4, explosive is loaded into all the ultra-deep blast holes, and blocking is carried out; 5, the detonation sequence is determined, the explosives in all the ultra-deep blast holes are detonated in sequence, and blasting weakening is conducted on the rock within the tunneling path range; and step 6, tunneling by adopting a tunneling machine. According to the method, the rock in the tunneling path range is pre-split through ultra-deep blast hole blasting, the integrality of the rock in the tunneling path range is reduced, then tunneling is conducted through the tunneling machine, the working efficiency of the tunneling machine is improved, the stability of surrounding rock is improved, the blasting weakening distance is long, and the tunneling continuity is effectively improved.

The utility model discloses a two-way prestress weight reduction assembly type composite floor slab system. The two-way prestress weight reduction assembly type composite floor slab system comprises a pre-tensioning prestress prefabricated concrete bottom plate, weight reduction blocks, cast-in-place concrete ribs and post-tensioning prestress steel bars. Longitudinal prestressed load-bearing steel bars and transverse distribution steel bars are arranged in the pre-tensioned prestressed precast concrete bottom plate. A concrete reinforcing rib or a steel truss reinforcing rib or a steel and concrete combined structure reinforcing rib is arranged on the concrete bottom plate; the weight reducing blocks are laid on the pre-tensioned pre-stressed precast concrete bottom plate, and the weight reducing blocks are spaced by a certain distance. A plurality of pre-tensioned pre-stressed precast concrete bottom plates are assembled together, and concrete ribs are formed after the weight reducing blocks are cast in place. The prestressed steel bars are post-tensioned in the concrete ribs, and after the concrete reaches the strength, the steel bars are tensioned to form post-tensioned prestressing force to form bonded or unbonded prestressing force. According to the utility model, the bidirectional rigidity of the floor system is consistent, the bidirectional force transmission performance and the bidirectional anti-cracking effect are better, the integrity of the floor system is better, and more steel materials are saved.

The present invention relates to an assembled sandwich panel filled with a combined box and a manufacturing method thereof, and belongs to the field of general building construction. The sandwich panel (1) comprises a combined box (2), a rib beam (3), and a panel (4). The rib beam has an upper iron (6), a lower iron (7) and stirrups (8), and the panel has plate reinforcement (9). The combined box is composed of a bottom plate (10) and a filling piece (11). The bottom plate has a cantilever plate (12). The bottom plate reinforcement (13) extends upward at the cantilever plate position. The bottom plate is provided with a stiffening rib (14). The filling piece has a pouring hole (15) and a notch (16) that matches the stiffening rib. Adjacent combined boxes are spliced ​​together, the rib beams and plate reinforcement are tied, and concrete is poured to form an assembled sandwich panel. The combined box of the present invention is very convenient to produce, transport and install. The floor slab formed by the sandwich panel has a large span, light weight and good integrity. The present invention has good economy and applicability, and promotes the development of construction technology.

The utility model relates to the technical field of signboard, specifically disclose a angle adjustable signboard, including base, the top surface mounting of base has the mounting frame, the inner chamber middle part of mounting frame installs the mounting panel, the mounting panel end face and bottom are evenly rotatory and set up a plurality of connecting shafts between mounting frame respectively, the outer wall on connecting shaft installs the signboard, the top surface of mounting panel evenly distributes a plurality of positioning piece, the both sides of two connecting shafts in the same vertical direction are close to each other respectively and are provided with adjusting assembly, the utility model discloses a angle adjustable signboard is provided with mounting panel, positioning piece, connecting shaft and signboard, and in the process of device use, realizes the mutual separation between multiple signboards in the gale weather through the mutual cooperation between above -mentioned structure, reduces the integrity of device, reduces the wind area and stress, thereby reaches the effect that reduces the stress of device, improves device stability and security.

The present application relates to the technical field of suspension bridge, and particularly relates to an anchoring system and a design method thereof, the anchoring system comprising a composite saddle and an anchorage, a main cable is connected with the anchorage through the composite saddle, a first front anchoring surface of the anchorage close to the composite saddle is in a spherical shape, the main cable is diverged into a plurality of strands through the composite saddle, and the strands are radiated from the composite saddle and connected on the first front anchoring surface. By setting the first front anchoring surface of the anchorage in a spherical shape, the stress increment of each strand is consistent when the composite saddle is displaced and slipped, and the consistency of the stress of the main cable is ensured. Further, by setting the first front anchoring surface in a spherical shape, the adjusting displacement of the composite saddle is not limited, that is, the stress level among the strands of the main cable is consistent under any displacement of the composite saddle, the stress adjusting step of the strands in the construction process is cancelled, the stress state of the main cable is ensured, and the uniform stress of the main cable is further ensured.

The utility model belongs to the technical field of water conservancy project protection, and relates to an ice-pushing-resistant heat absorption floating ball device for a reservoir in a cold region. Comprising a plurality of floating balls located on the water surface, and the floating balls are attached to form a floating cover layer; the floating ball is a hollow ball body and comprises an upper hemisphere and a lower hemisphere; the upper hemisphere is a light-transmitting layer; the lower hemisphere is a heat absorption layer; and the mass of the lower hemisphere is greater than that of the upper hemisphere. The device completely depends on solar energy to autonomously operate, has the advantages of zero carbon emission, low operation and maintenance cost and the like, and is particularly suitable for winter protection requirements of reservoirs in remote cold regions.

The utility model provides a multi-peak type shield cutter suitable for a stratum with uneven hardness. The cutter comprises a cutter holder and a cutter body, and at least two protruding cutter peaks are arranged on the side, away from the cutter holder, of the cutter body. The two sides of the cutter body are respectively provided with a cutter wing protruding outwards, and the cutter wings are located in the width direction of the cutter body. The length of the tool apron is larger than the overall width of the tool body and the tool wings on the two sides, the width of the tool apron is larger than the thickness of the tool body, and a plurality of fixing bolts are distributed on the tool apron and distributed on the periphery of the tool body. The cutter is provided with the cutter peak and the cutter wing, the height of the cutter peak can be adjusted and configured according to the stratum condition, different levels of cutting depths are achieved, layer-by-layer segmentation of a rock mass is facilitated, the cutter peak can be matched with a rock track left after a hob is used for cutting, and complementation is well formed; the arrangement of the cutter wings is favorable for intersecting with other cutter paths of the panel, the width of the cutter body is increased, and the weight of the cutter head and the number of cutters are reduced under the condition that the aperture ratio is not influenced.

The utility model provides a detachable rear lifting type safety display board support, and belongs to the field of safety warning equipment. The problems that a display board support is high in integrity and not convenient to transport, store, recycle and reuse, a warning board is troublesome to install, and the size of the warning board and the size of a display board frame are not appropriate are solved. The display board comprises a vertical rod column, a display board frame and an internally-inserted warning board, the display board frame is divided into an inner display board frame and an outer display board frame, connecting hinges are arranged at the top ends of the inner display board frame and the outer display board frame, anchor bolt holes are formed in the two sides of the vertical face of the outer display board frame, a fixing lock catch is arranged at the bottom of the outer display board frame, and a limiting plug pin is arranged at the bottom of the inner display board frame. An anchoring clamping groove is formed in the upper half portion of the stand column, and a flange plate is installed at the bottom of the stand column. The safety warning display board device is mainly used for enterprise management.

The invention discloses a two-way prestress overlap-reducing composite floor system which comprises a pre-tensioning prestress precast concrete bottom plate, weight reducing blocks, cast-in-place concrete ribs and post-tensioning prestress steel bars. Longitudinal prestressed load-bearing steel bars and transverse distribution steel bars are arranged in the pre-tensioned prestressed precast concrete bottom plate. A concrete reinforcing rib or a steel truss reinforcing rib or a steel and concrete combined structure reinforcing rib is arranged on the concrete bottom plate; the weight reducing blocks are laid on the pre-tensioned pre-stressed precast concrete bottom plate, and the weight reducing blocks are spaced by a certain distance. A plurality of pre-tensioned pre-stressed precast concrete bottom plates are assembled together, and concrete ribs are formed after the weight reducing blocks are cast in place. The prestressed steel bars are post-tensioned in the concrete ribs, and after the concrete reaches the strength, the steel bars are tensioned to form post-tensioned prestressing force to form bonded or unbonded prestressing force. According to the device, the consistency of the two-way rigidity of the floor system can be achieved through the two-way prestress, the two-way force transmission performance and the two-way anti-cracking effect are better, the integrity of the floor system is better, and more steel materials are saved.

The invention discloses a mine mining tunneling device for screening ores. The mine mining tunneling device comprises a girder, a tunneling mechanism, a collecting mechanism and a screening mechanism. The invention further discloses a mine mining tunneling device for screening the ores. The mine mining tunneling device for screening the ores is adopted. The mining, collecting and screening device has the beneficial effects that the tunneling mechanism excavates ore of a mine at the front end of the girder, so that the ore falls to the ground, the ore on the ground is conveyed into the screening mechanism through the collecting mechanism, the ore is screened through the screening mechanism, and the mining, collecting and screening functions of the ore in the mine are achieved; and the advantage that firm ore in the mine can be excavated is achieved.

The utility model provides a battery pack and an automobile, and relates to the technical field of batteries. The battery pack comprises a box body, a cooling plate, a buffer layer and a battery pack, the battery pack is arranged in the containing cavity of the box body, part of the frame is in lap joint with the cooling plate, so that the cooling plate can bear and support the frame, the frame is further arranged on the bottom plate, the bottom plate can also support the frame, and therefore the frame structure is stable. The cooling plate is located between the bottom plate and the frame, so that part of the cooling plate can be clamped by the bottom plate and the frame, the cooling plate can be more reliably fixed in the box body, the integration of the box body and the cooling plate is better, and the structure is more compact. The buffer layer between the cooling plate and the bottom plate can prevent the bottom plate from making hard and straight contact with the cooling plate, and therefore the bottom plate and the cooling plate can be prevented from being damaged due to mutual impact.

The present invention provides an assembled integral large panel, which belongs to the field of assembled buildings, and includes a plurality of vertical prefabricated panels arranged vertically, wherein two vertical prefabricated panels are connected together by tension bars. Compared with the prior art, the present invention has a more reasonable structure, better rigidity, strength and waterproof effect, more convenient and efficient manufacturing, more material saving and lower cost. The present invention adopts strips for vertical assembly, and for buildings such as residential buildings with consistent floor heights, the strips have fewer specifications, high production efficiency and low cost. The assembled integral outer panels assembled by the present invention can achieve a smooth surface and can be free of plastering, thereby saving materials, high construction efficiency and reducing costs. Furthermore, the present invention can improve construction efficiency and quality and save costs by pre-preparing the exterior wall decoration in the factory and hoisting them together.