9results about How to "Improve engineering safety" patented technology

The utility model discloses a kind of deformation self-adapting anti-seepage structures of embankment linking section, including embankment, embankment crossing building, the side pier both sides of embankment crossing building located in embankment are provided with concrete spur wall, concrete spur wall outside and intermediate position are reserved with notch, flat plate type plastic steel sheet pile is horizontally inserted into notch and is set, the undisturbed soil layer of embankment is formed with undisturbed soil layer by in-situ mixing, wave type plastic steel sheet pile is horizontally inserted into undisturbed soil layer by in-situ mixing, flat plate type plastic steel sheet pile and wave type plastic steel sheet pile are flexibly linked to form composite anti-seepage structure type by using lock catch, can solve linking section leakage problem, improve engineering full life cycle safety, with deformation coordination, construction controllability and anti-seepage reliability and other technical features.

This application relates to a self-drainage structure for a rotor installation pit. This application is applicable to the field of hydropower construction technology. The technical problem to be solved by this application is: to provide a self-drainage structure for a rotor installation pit. The technical solution adopted in this application is: a self-drainage structure for a rotor installation pit, comprising: an upper drainage hole formed between the installation pit and a construction support tunnel below the installation pit, the upper end of the upper drainage hole connecting to the bottom of the installation pit, and the lower end of the upper drainage hole connecting to the construction support tunnel; a middle drainage pipe disposed within the construction support tunnel, the upper end of the middle drainage pipe connecting to the lower end of the upper drainage hole, and the lower end of the middle drainage pipe extending to a drainage ditch at the bottom of the construction support tunnel; and a lower drainage hole formed between the construction support tunnel and a self-drainage tunnel below the construction support tunnel, the lower drainage hole connecting to a drainage ditch at the bottom of the construction support tunnel, and the lower end of the lower drainage hole connecting to the self-drainage tunnel.

The invention belongs to the technical field of functional building materials, and particularly relates to an industrial waste-based energy storage and deicing building block brick, which comprises a cavity brick body, a brick cover arranged at the top of the cavity brick body, and a capacitor array arranged in a cavity of the cavity brick body, the cavity brick body is of a cuboid hollow structure, the top of the cavity brick body is open, the brick cover is a rectangular cover plate matched with the cavity brick body, the capacitor array comprises a plurality of capacitor monomers which are connected in series, and a separation diaphragm is arranged between every two adjacent capacitor monomers; each capacitor monomer comprises an anode electrode, an anode electrolyte, a diaphragm, a cathode electrolyte and a cathode electrode which are connected in sequence. The capacitor array is used as an energy storage unit to be integrated in the cavity of the cavity brick body, synchronous construction of energy storage and building block brick components is achieved through the cavity brick body-capacitor array-brick cover integrated structure, the system integration degree is high, the structure is compact, road paving and subsequent modular replacement and maintenance are facilitated, and the integrated energy storage and building block brick is suitable for application and popularization.

This utility model relates to the field of pipe processing technology and discloses a pipe rust removal device, including a worktable and a slider. A vertical plate is fixedly connected to the upper surface of the worktable, and a groove is formed on the upper surface of the worktable. The outer wall of the slider is slidably connected to the inner wall of the groove. A support is fixedly connected to the upper surface of the slider, and a rotating frame is rotatably connected to the inner wall of the support. A cylinder is fixedly connected inside the rotating frame, and a sleeve is rotatably connected to the outer wall of the cylinder. A steel brush is slidably connected to the inner wall of the sleeve. In this utility model, through the mutual cooperation of the support, rotating frame, steel brush, sleeve, cylinder, support plate, motor, threaded rod, square block, U-shaped steel frame, and cylinder, the device adapts to different pipe diameters, improving the versatility of the rust removal device, reducing costs, and ensuring rust removal quality. It is suitable for various engineering and maintenance scenarios.

The utility model relates to a supporting structure for preventing rock collapse relates to rock slope engineering technical field, fixed frame is equipped in the outside of the protective net body, fixed screw rod is respectively in the loose of fixed frame, fixed nut is respectively through the thread of screw joint and is equipped in fixed screw rod, fixed nut is located in fixed frame, connecting rod is respectively equipped in the rear end of fixed screw rod, adjusting ball is respectively embedded in the upper end of connecting rod, the upper end of adjusting ball is fixed with fixed screw rod, drainage mechanism is respectively inserted in the protective net body, can adjust the inclination angle and direction of fixed screw rod, adapt to the complex terrain of different rock side wall, can effectively prevent rock collapse and rock block roll, can more closely with rock side wall of protective net body, strengthen the protection effect, improve the engineering safety, can effectively discharge the accumulated water in rock, avoid the collapse of rock because of accumulated water corrosion.

The present application relates to the technical field of tunnel engineering detection, in particular to a tunnel upper density abnormal area rapid detection method based on short-time muon counting; the method comprises the following steps: first, accurately calibrating the posture of muon detection equipment, collecting and calibrating the normal flux reference value in the short time in the open area outside the tunnel, then arranging points with large spacing along the tunnel axis for large-scale preliminary screening, collecting short-time muon flux, and making polynomial fitting of effective counting and mountain thickness to preliminarily delineate the density abnormal point, then carrying out fine measurement on the abnormal area by arranging points with small spacing, fitting and calculating again, comparing the fitted thickness with the actual thickness, determining the abnormal type according to the negative correlation law of muon flux and density, drawing the thickness profile of the abnormal area, and finally forming a standardized detection report through cross-validation to provide safety guidance for tunnel construction. The present application realizes the rapid identification and positioning of the density abnormal area above the tunnel through short-time collection and two-stage detection strategy.

The invention provides an offshore wind plant DC current collection system topology evaluation and decision-making method and device based on combination weighting and TOPSIS, and the method comprises the steps: obtaining a plurality of alternative topology schemes, constructing a comprehensive evaluation index system, and carrying out the preprocessing of all indexes in the comprehensive evaluation index system, and obtaining a standardized index matrix; based on the standardized index matrix, obtaining the subjective weight of each index by adopting an analytic hierarchy process, and obtaining the objective weight of each index by adopting an entropy evaluation method; fusing the subjective weight and the objective weight based on a preset fusion principle to obtain a combined weight; performing hard screening on the alternative topology schemes based on preset engineering constraints; based on the combined weight, comprehensively evaluating the alternative topology schemes subjected to hard screening by adopting an approximate ideal solution sorting method, and calculating the relative closeness of each alternative topology scheme to the positive ideal solution and the negative ideal solution; and based on the relative close degree, outputting a comprehensive score, a scheme sequence and an optimal recommendation scheme of the alternative topology scheme.

The invention provides a fixing structure which comprises two connecting pieces which are connected in an inserted mode, a connecting piece body extends outwards to form a plurality of extrusion parts, a plurality of extrusion grooves are formed in the connecting piece body, and the extrusion parts and the extrusion grooves are arranged at intervals. The connecting piece comprises a first connecting piece and a second connecting piece; the extrusion part and the extrusion groove of the first connecting piece correspond to the extrusion groove and the extrusion part of the second connecting piece respectively; the end part of the joint of the extrusion part and the first connecting piece body protrudes out of the first connecting piece body to form a first stop part, and the end part of the joint of the extrusion part and the second connecting piece body protrudes out of the second connecting piece body to form a second stop part; when the first connecting piece and the second connecting piece are connected in an inserted mode, the first stopping part and the second stopping part are connected in a clamped mode. According to the fixing structure provided by the invention, extra tools and complex procedures are not needed in the assembling process, assembling can be completed only by connecting the first connecting piece and the second connecting piece in a matched mode, the assembling difficulty is remarkably reduced, and the construction time is shortened.

The invention relates to the technical field of road engineering, and provides a foam light soil roadbed multi-element load shedding deformation regulation and control method based on structural stress control and a roadbed structure.The method comprises the steps that soil bodies of different sections and different depths of a construction road section are selected for drilling and sampling; carrying out a one-dimensional consolidation compression test on the undisturbed soil to determine the yield stress of the soil body structure; foam light soil light filler deformation regulation and control are preferentially considered, and if the process cannot meet the requirement that the upper load is smaller than the soil body structure yield stress, vacuum preloading and foam light soil deformation regulation and control can be combined. Under the extreme condition (the foundation structure is extremely weak or the upper design load is large), vacuum preloading and foam light soil embedded large-diameter pipes are combined for deformation regulation and control. According to the multi-element deloading deformation regulation and control thought based on structural stress control, it can be ensured that the load borne by the foundation in the roadbed construction process is always lower than the structural yield stress, the soil body structural integrity is kept to the maximum extent, foundation deformation is effectively controlled, and the engineering stability is improved.