18results about How to "Improve the support effect" patented technology

The invention discloses a soft rock large deformation control method and a rapid support system suitable for TBM tunnel construction method characteristics, the method is implemented based on an anchoring support system composed of a short anchoring support system and a long anchoring support system, and the method is suitable for an open TBM construction scene: in a TBM tunneling process, before a shield is exposed, the shield is not exposed, and the long anchoring support system is not exposed; a short anchoring support system of a full-length anchoring anchor rod structure is timely arranged in the radial direction of the 180-degree area of the upper half ring of the tunnel section through a cutter head edge cutter hole, and the short anchoring support system and a shield cooperate to form an initial deformation control system; after the shield is exposed, according to the deformation degree of the surrounding rock, full-length anchoring anchor rods or pre-stressed anchor cables are adopted in a graded mode, long anchoring supporting systems are arranged at intervals with the short anchoring supporting systems in a spiral mode, then the long anchoring supporting systems are cooperatively borne with steel arches, reinforcing meshes and sprayed concrete, and the long anchoring supporting systems are matched with 70m system sprayed concrete and 1000m secondary lining construction behind a tunnel face. According to the method, the displacement around the hole is effectively controlled, the TBM is prevented from being stuck, and the construction safety and efficiency of the open-type TBM in the soft rock large-deformation geology are improved.

This utility model provides a feeding compensation device for a fully automatic film coating machine, including a supporting base plate placed on an external lifting platform for supporting materials, a plurality of placement slots equally spaced on the supporting base plate, a plurality of support rods with one end set on the supporting base plate within each placement slot and the other end located outside the placement slot, and a counterweight block set on the other end of each support rod. The length of the support rod is greater than the length of the placement slot, and the support rod is fitted with the placement slot with a clearance. By subsequently increasing the lifting stroke of the lifting platform, the lifting frequency of the lifting platform is reduced, thereby reducing the energy consumption of the lifting platform due to frequent start-stop.

The utility model provides a kind of light supporting device for steeply inclined thin coal seam belongs to coal mining technical field, the light supporting device for steeply inclined thin coal seam includes side support frame in both sides, light supporting assembly is set between side support frame, light supporting assembly includes supporting bottom plate and supporting net in both sides, one side of supporting net is connected with steel chain, another side is connected with steel chain, electric winch is set on side support frame, one end of steel chain is connected with supporting net, and the other end is fixedly connected with the reel of electric winch by ring buckle;Side support frame includes stand, crossbeam and inclined strut, trapezoidal bottom plate is set in the bottom of stand, crossbeam is fixedly connected with stand by bolt, one end of inclined strut is connected with stand, and the other end is connected with bottom plate;Multiple groups of sliding slots are set on crossbeam, pulley is rotatably set in sliding slot, steel chain is wound around pulley;The utility model can solve the problem that dynamic support demand cannot be met.

The utility model relates to pipeline trench support field discloses a novel support structure for pipeline trench support, including maintenance board, the lateral wall fixedly connected with track of maintenance board, the inside of track is provided with slide, the surface of track is opened with positioning hole, the inner wall screw thread connection of positioning hole has the locating bolt, the surface fixedly connected with support shaft of slide, the outer wall fixedly connected with spherical seat of support shaft, the inner wall rotationally connected with the regulating steel ball of spherical seat. In the utility model, through being provided with track, slide, positioning hole, locating bolt and so on, when supporting pipeline trench, can adapt to the width of trench to carry out horizontal support while, maintenance board can carry out two -two splicing and enlarge the support area, and when the one end of trench changes too wide or too narrow, one end of maintenance board can be reduced or enlarged to carry out angle adjustment, improve the support effect while, improve the adaptability of support operation.

This utility model discloses a drilling rig for smooth blasting construction of deep-buried high-stress tunnels, relating to the field of tunnel construction technology. It includes a frame, on which a rock-drilling assembly and a drive component are mounted. The rock-drilling assembly includes a drill rod, and the drive component drives the drill rod to move. A drill bit is located at the end of the drill rod away from the drive component. A temporary support assembly is mounted on the drill rod, including a mounting ring. Connecting rods are hinged to both ends of a support plate, with one connecting rod hinged to the side wall of the mounting ring. A slider is hinged to the end of the other connecting rod away from the support plate, and the slider slides against the side wall of the mounting ring. A first spring, made of shape memory metal, is located on the side of the support plate near the mounting ring. Both ends of the first spring are fixedly connected to adjacent side walls to reduce the risk of borehole collapse in high-stress construction environments.

The utility model relates to related technical field of steel sheet pile support, concretely is a kind of detachable steel sheet pile support mechanism for municipal road pipe network reconstruction, it includes: the steel sheet pile body of two quantity, two steel sheet pile body adjacent side is provided with two quantity of H-shaped steel.This utility model can adjust the height of support mechanism according to the stress point of steel sheet pile under the cooperation of steel sheet pile body, H-shaped steel, adjusting sleeve, connecting block, adjusting clamping strip, tooth slot and dismounting mechanism, and further improve the support effect at the stress point of steel sheet pile, solve the problem that the detachable steel sheet pile support mechanism for municipal road pipe network reconstruction can quickly disassemble and assemble steel sheet pile support mechanism, but it cannot adjust the height of support mechanism according to the stress point of steel sheet pile, so that the stress point of steel sheet pile is relatively weak, and the support effect is affected.

The utility model discloses a TBM driving anchor rod positioning device, including anchor rod, the outer wall of anchor rod is provided with screw threads, and the inner chamber of anchor rod is hollow setting, the bottom welding of anchor rod has the anchor head, the outer wall of anchor head is seted up and has vertical strip through -hole, the inner chamber of anchor head is hollow setting, and the bottom setting of anchor head is concave, and the outer wall of anchor head is fixedly connected with the positioning structure. The device is applied to the positioning link of anchor rod during TBM driving, ensures that the anchor rod is in the middle, the positioning structure can prevent the anchor rod from deviating or contacting the hole wall in the grouting process, avoids forming " dry hole section " to cause grouting not to be dense, improves the uniformity of anchoring force, and the central anchor rod makes the slurry evenly wrap the pole body, forms the complete anchoring body, and the standard preparation work and operation process are the basis of grouting anchor rod construction, and through the vertical strip through -hole of anchor head and hollow setting, the grouting quality is optimized.

This utility model provides a multifunctional scaffolding device, relating to the field of scaffolding technology, comprising: a support part; a stepping part inside the support part; a climbing part inside the support part; and a fall protection part inside the support part; the connecting sleeve block, locking frame, and locking pin of the fall protection part can reliably fix the stepping part and the climbing part, preventing components from loosening and falling off, while providing fall protection for construction workers, improving the practicality and safety of the scaffolding. It solves the problem that existing scaffolding often uses simple snap-fit ​​methods to fix the steps, relying solely on the mechanical engagement between the steps and the frame for installation, thus only providing basic positioning functions and lacking anti-detachment locking devices and secondary reinforcement structures. This makes it difficult to withstand dynamic loads and external impacts during construction. In actual construction, frequent stepping by construction workers and collisions during material handling can easily cause displacement of the snap-fit ​​parts between the steps and the frame, leading to loosening or even detachment of the steps.

This utility model relates to the field of civil engineering construction technology, and discloses a steel sheet pile support structure for foundation pit excavation. It includes steel sheet columns connected by a fixing assembly. A fixing groove is formed on the side of each steel sheet column, extending into the soil. A sleeve is installed inside the fixing groove, and multiple protruding grooves are formed on the outer surface of the sleeve. An insertion block is movably installed inside each protruding groove, and a movable column is movably installed inside the sleeve. This utility model further enhances the interaction between the support structure and the foundation through the installation of the sleeve. When the movable insertion block inside the protruding groove, the movable column inside the sleeve, and the retaining plate are pushed, the inclined surface on the retaining plate can smoothly push the insertion block into the protruding groove, thereby achieving a firm fixation between the support structure and the soil. This eliminates the need for a large amount of support structure, facilitating operations inside the foundation pit.

This application relates to a motorized emergency repair device and method suitable for tunnel arch collapses on existing railway lines. The motorized repair device includes a mobile platform, a deployable protective module, a scanning module, a trimming module, and an additive manufacturing module. The deployable protective module is mounted on the mobile platform and includes an arc-shaped support arm that can be deployed to form an arched framework, and a protective net suspended from the arc-shaped support arm. The scanning module, also mounted on the mobile platform, is used to perform three-dimensional scanning of the collapsed area. The trimming module, also mounted on the mobile platform, is used to trim the rock mass contour of the collapsed area based on the data obtained from the three-dimensional scan and generate trimmed contour data. The additive manufacturing module, also mounted on the mobile platform, is used to manufacture support structure components that match the trimmed rock mass contour of the collapsed area based on the trimmed contour data. This enables safe, efficient, and precise emergency repairs for sudden situations such as tunnel arch collapses.

The application relates to a house building foundation pit protection device, which comprises a plurality of steel sheet piles for supporting the inner wall of the foundation pit, the steel sheet pile comprises outward supporting surfaces and inward supporting surfaces arranged oppositely; further comprising a transverse supporting frame fixedly installed on the inner wall of the foundation pit, the transverse supporting frame is used for being in contact with the outward supporting surfaces of the steel sheet pile; a supporting screw rod towards the inward supporting surfaces of the steel sheet pile is threadedly connected to the transverse supporting frame, the end of the supporting screw rod is rotatably sleeved with a supporting seat, the supporting seat is in contact with the inward supporting surfaces of the respective opposite steel sheet piles; the transverse supporting frames are arranged in the height direction of the steel sheet piles in sequence and at intervals. The application has the advantages of further improving the stability and reliability of the steel sheet pile, enhancing the connection reliability between the steel sheet piles, and improving the supporting effect on the inner wall of the foundation pit.

This application relates to a foundation pit support structure, specifically within the technical field of foundation pit support. It includes a plurality of adjacent and connected Larssen sheet piles, which abut against the inner wall of the foundation pit. A support mechanism is provided within the foundation pit. The support mechanism includes a support plate abutting against the inner wall of the Larssen sheet piles, and a top plate abutting at the connection points of adjacent Larssen sheet piles. The support mechanism also includes a support seat disposed within the foundation pit, with a top support assembly on the support seat. The support plate pushes the top plate against the Larssen sheet piles via the top support assembly. This application improves the support capacity of the sheet piles and reduces the potential for damage to the sheet piles.

The application provides an inner support basement foundation pit enclosure system, which is applied to the technical field of foundation pit enclosure and comprises a retaining structure, a temporary horizontal support structure and a permanent vertical support structure for supporting the retaining structure along the periphery of the foundation pit, the retaining structure is arranged along the inner wall of the foundation pit, the permanent vertical support structure comprises a plurality of groups of permanent lateral force resisting vertical members with a high length-width ratio continuous force section in at least a lateral direction, wherein the lower end of the member is anchored below the bottom plate of the basement, the member is constructed by using a top-down method and is reserved in a peripheral area on the inner side of the basement after construction is completed, a plurality of structural columns are also constructed in the peripheral area by using a bottom-up method, the plurality of structural columns and the plurality of groups of permanent lateral force resisting vertical members are distributed in the peripheral area in a staggered manner, and the foundation pit enclosure system has the advantages of less use of temporary members, convenient use of the main structure and the like.

The application relates to an anchor rod with multiple force resistance lines, which comprises a core steel bar, a large sleeve, a small sleeve, a limiting structure comprising a large sleeve limiting end plate and a small sleeve limiting end plate, which are suitable for limiting the moving distance of the large sleeve and the small sleeve away from each other along the core steel bar; and an auxiliary force transmission structure comprising a large sleeve sealing head steel plate, a steel supporting plate provided with a large sleeve outer stiffening rib between the large sleeve and the steel supporting plate, the steel supporting plate being fixed on a rock wall, an inner sleeve provided in the large sleeve and surrounding the core steel bar, the inner sleeve being provided with a large sleeve inner stiffening rib between the large sleeve and the inner sleeve, and the large sleeve inner stiffening rib being connected with the large sleeve sealing head steel plate. After the core steel bar is stretched and deformed, the large sleeve limiting end plate and the small sleeve limiting end plate are in contact to provide anchoring force, play the role of the second line of defense, and cooperate with the anchoring force provided by the core steel bar to provide greater supporting force, so that the anchor rod can continue to play a role.

This utility model discloses a prestressed inclined pile composite support for foundation pit construction, including a support pile and an inclined pile. A first fixing member is fixedly connected to the top of the support pile, and a second fixing member is fixedly connected to the top of the inclined pile. An adjustment mechanism is provided between the first and second fixing members. This utility model, by setting an angle-adaptive adjustment structure composed of a first spherical shell, a first sphere, a connecting rod, a second sphere, and a second spherical shell, allows the inclined pile to flexibly adjust its angle to adapt to the actual needs of complex foundation pit shapes. Simultaneously, by setting a first cylinder, a first telescopic rod, a first clamping circular plate, and a second cylinder, a second telescopic rod, and a second clamping circular plate, rapid locking and unlocking of the inclined pile angle is achieved. Furthermore, the anti-slip circular plates set inside the first and second spherical shells further increase the friction between the spheres and the piles, effectively preventing the spheres from rotating due to force.