31results about How to "Timely reinforcement" patented technology

The invention relates to the technical field of electric power equipment detection and in particular relates to an evaluation method for a corrosion state of an in-service power transmission line rodtower and a metal framework. The evaluation method comprises the following steps: detecting each evaluation index of corrosion prevention performance and the substrate thickness of coating and platinglayers of the power transmission line rod tower and the metal framework; then calculating a deduction value of each index respectively and counting the deduction values according to a determined corrosion grade of a service environment of the power transmission line rod tower and the metal framework and a detection result, so as to obtain a deterioration degree; and comprehensively evaluating thecorrosion state of the in-service power transmission line rod tower and the metal framework. According to the evaluation method provided by the invention, the surface state and the corrosion degree of the coating and plating layer are evaluated according to the service environment, so that the corrosion state of the in-service power transmission line rod tower and the metal framework is evaluated. By adopting the evaluation method, the corrosion state of the in-service power transmission line rod tower and the metal framework can be evaluated, the evaluation is more accurate, and replacementor reinforcement and corrosion prevention treatment is carried out on the transmission line rod tower and the metal framework in time, so that the operation risks of power grids are reduced.

The invention relates to a squeezing weak surrounding rock tunnel prestressed anchor cable group support structure and a construction technology. The support structure comprises arch speed control anchor cables (1), side wall speed control anchor cables (2), arch limiting anchor cables (3), side wall limiting anchor cables (4), arch locking anchor cables (5), side wall locking anchor cables (6), a first layer primary support (7) and a second layer primary support (8); all anchor cables in the construction technology adopt drilling and grouting simultaneously, however, reserved tensioning is conducted according to times, batches and parts. Controlling release on surrounding rock stress is achieved, the surrounding rock deformation growth rate and deformation accumulation amount are lowered, large deformation is effectively controlled, steel arch centering replacement caused by too large deformation is avoided, and the surrounding rock collapse hazard is lowered; in addition, the work efficiency is improved, constructors can conduct drilling conveniently, and it is guaranteed that the anchor cable positions are accurate, and tensioning can be conducted in time.

The invention relates to a polyurethane-water glass composite grouting material and a preparation method thereof, which belong to the technical field of construction materials. With lower viscosity and surface tension and high infiltration capability, silane coupling agent utilized by the invention can be rapidly spread on a constructed surface to infiltrate into cracks of a rock surface; meanwhile, inorganic groups in the silane coupling agent can react with oxide on the surfaces of the cracks to generate stable silicon-oxygen bonds, and the organic groups and NCO react to be connected onto organic macromolecules, so that the bonding strength and constructed surface infiltration of the grouting material are improved, meanwhile, a catalyst component is promoted to be uniformly dispersed into water glass, phase separation is prevented, the groutability is good, the permeability is high, and moreover, the polyurethane-water glass composite grouting material has good compressive strength;and the polyurethane-water glass composite grouting material can play the role of filling, reinforcement, waterproofing, leaking stoppage and the like for rock-soil/gravel structures, and is applicable to waterproofing and leaking stoppage for cracks and reinforcement and seepage resistance for foundations in bridges, subways, dams, rock strata, harbors, civil air defence works and the like.

The invention provides a multifunctional operation rack suitable for tunnel construction. The multifunctional operation rack comprises a movable portal, and a concrete guniting device, a jumbolter device and a steel arch splicing device are arranged on the movable portal. The steel arch splicing device is arranged on the movable portal, so that the splicing process of the steel arch is mechanized, the jumbolter device and the guniting device are integrated, the system integration degree is high, cooperative and efficient operation can be achieved, the working efficiency is improved, the arch is timely supported, the supporting efficiency is high, the quality is more stable, and the safety of tunnel construction is improved.

The invention relates to a well drilling device. The well drilling device comprises a main body, a drill bit tire body and cutting teeth, wherein the drill bit tire body is arranged on one end part of the main body; the cutting teeth are formed on the drill bit tire body; the main body is provided with a drilling liquid runner used for inputting drilling liquid; a well-cementing fluid runner isolated from the drilling liquid runner and used for guiding into cementing fluid is also arranged on the main body; an outlet communicated with the well-cementing fluid runner is also formed in the side wall of the main body; the main body is provided with an axial line direction; the well-cementing fluid runner is provided with a first runner extending along the axial line direction of the main body; a drill bit port communicated with the well-cementing fluid runner is formed in the drill bit tire body; the diameter of the first runner is smaller than that of the drilling liquid runner. A gap of a crack development stratum can be effectively blocked by injecting the well-cementing fluid, so that leakage loss is prevented; the stability of a ground layer section which easily collapses and is not stable is enhanced, a well wall is reinforced, and collapse of the well wall is prevented; after drilling is finished, a blockage removing agent can also be injected to restore the permeability of the well wall.

The invention discloses a monitoring device for mine pressure of a coal mine stope. The monitoring device comprises a fixing column, a pressure equalizing monitoring device, a side monitoring device and top end monitoring devices, wherein the side monitoring device is arranged on the inner side of a roadway side plate; the fixing column is fixed in the center of the lower end surface of a roadway top plate; the lower end of the fixing column is connected with the pressure equalizing monitoring device; a vertical strip-shaped sliding groove is formed in the lower end of the fixing column; the top end monitoring devices are symmetrically arranged on the left side and the right side above the pressure equalizing monitoring device; a sliding rail is fixed on the bottom end surface of a supporting shell in the pressure equalizing monitoring device; a supporting column is connected to the sliding rail in a sliding mode; the supporting column is located on the inner side of the side monitoring device; and a point monitoring assembly is further arranged in the roadway top plate. According to the monitoring device, different pressures borne by the surfaces of the roadway top plate and the roadway side plate are monitored, so that the pressure equalizing monitoring device can collect and record the monitored pressure values.

The invention provides a method and device for predicting the bottom scouring depth of an underwater crossing pipeline, and belongs to the technical field of underwater crossing pipelines. According to the technical scheme provided by the embodiment of the invention, the corresponding limit equilibrium scouring depth and the duration of reaching the scouring equilibrium state are obtained based on the various characteristic parameters of the first crossing pipeline which is scoured in the river; and the data are obtained based on the actual scouring data, so that the reliability is relatively high, and the accuracy is high. According to the data, the scouring time and the scouring depth of the first crossing pipeline and the first-level kinetic reaction equation, a scouring pit vertical expansion mathematical model of the crossing pipeline in the river can be obtained, and the model can reflect the rule that the scouring pit depth changes along with the scouring time. Based on the mathematical model, the scouring depth of the to-be-predicted second crossing pipeline at any preset scouring time can be obtained, so that a riverbed can be reinforced in time, and the safety and reliability of the underwater crossing pipeline are improved.

The invention provides an operation rack for tunnel supporting construction. The operation rack comprises a movable portal, and a concrete guniting device, a jumbolter device and a steel arch splicing device are arranged on the movable portal; and the steel arch splicing device comprises a moving mechanism used for moving the steel arch and a grabbing mechanical arm used for grabbing the steel arch, and the grabbing mechanical arm is matched with the moving mechanism. The steel arch splicing device is arranged on the movable portal, so that the splicing process of the steel arch is mechanized, the jumbolter device and the guniting device are integrated, the system integration degree is high, cooperative and efficient operation can be achieved, the working efficiency is improved, the arch is timely supported, the supporting efficiency is high, the quality is more stable, and the safety of tunnel construction is improved.

The invention provides a liquid storage tank with a safety early warning and protecting device. The liquid storage tank comprises a tank body composed of a plurality of combined fences, the adjacent combined fences are connected through connecting pieces, and a first impermeable layer is laid in the tank body. The liquid storage tank further comprises a cable arranged around the side surface of the tank body and a winder connected with the cable. A plurality of tilt angle sensors connected with a control end are further installed on the tank body, a pressure membrane used for detecting the pressure of the tank body is further arranged between the inner wall of the tank body and the first impermeable layer, an elastic gasket is further arranged between the pressure membrane and the first impermeable layer, the elastic gasket abuts against the pressure membrane, and the signal output end of the pressure diaphragm and the winder are connected with the control end. The liquid storage tank with the safety early warning and protecting device has the beneficial effect that the use safety of the large impermeable tank is improved.

The invention discloses a looseness detecting device for shield cutter head detachable cutter, and the problem that the installation fastening state of the detachable cutter cannot be monitored in real time in the prior art is solved. The device comprises a cutter holder and a cutter arranged on the cutter holder by a bolt, an oil hole leading to a cutter mounting surface is arranged in the cutterholder, the periphery of a port of the oil hole leading to the mounting surfaced is provided with a sealing member, and the other end of the oil hole is connected to a pressure detection system. By setting the pressure detection system and a corresponding structure between the cutter holder and the cutter, the gap of the looseness detection of the shield machine cutter is filled, and the real-time monitoring of the tightening state of the cutter can be realized. The cutter can be prevented from falling off, the cutter can be strengthened in time, the construction efficiency is ensured, and the probability of the secondary damage to other parts of the shield machine by the falling cutter is reduced.

The cable clamp with the protection effect comprises an upper clamp and a lower clamp, the upper clamp is oppositely arranged above the lower clamp, upper side plates are welded to the two ends of the upper clamp, lower side plates are welded to the two ends of the lower clamp, and fixing mechanisms are arranged between the upper side plates and the lower side plates on the two sides. The cable clamp comprises an upper clamp and a lower clamp, fixing mechanisms are arranged on the upper clamp and the lower clamp, each fixing mechanism comprises a first bolt and a first spring, the first springs are connected to the surfaces of the first bolts in a sleeving mode, and a connecting plate is arranged below the lower clamp. The cable clamp has the beneficial effects that the fixing mechanisms are arranged, and a cable can be clamped between the upper clamp and the lower clamp by rotating butterfly nuts of the fixing mechanisms; when cables with different diameters are fixed, the butterfly nut can be twisted according to the sizes of the cables for adjustment, the adjustment is very convenient and suitable for a large outer diameter range of the cables, meanwhile, the bottom block at the lower end of the first bolt is fixed by the second bolt, the first bolt can be stably fixed, and the limiting of the first bolt can be relieved by detaching the second bolt.

The invention discloses an auxiliary device for preventing deformation of adjacent building foundation of an urban railway. The auxiliary device comprises a base, wherein a fixing block is welded to the middle of a top end of the base, a plurality of inserting grooves are formed in the middle of a top end of the fixing block at equal intervals, balancing weights are embedded into the inserting grooves, and a wedge-shaped block is arranged on one side of the fixing block; a plurality of limiting grooves are formed in a bottom end of the wedge-shaped block at equal intervals, a plurality of limiting blocks are fixedly arranged on one side of the base at equal intervals and connected with the corresponding limiting grooves in an embedded mode, a plurality of sliding grooves are formed in the other side of the top end of the base at equal intervals, sliding blocks are slidably connected into the sliding grooves, and fixing rings are fixedly installed on one sides of the sliding blocks. By means of the fixing blocks and the wedge-shaped blocks arranged at the top end of the base, auxiliary supporting can be conveniently conducted on the foundation on the side face, by means of the balancing weights embedded in the fixing blocks, the supporting strength is increased, stability of the foundation is guaranteed, and it is avoided that normal running of urban railways is affected by collapse of the foundation.

The invention provides a novel operation rack for tunnel construction. The novel operation rack comprises a movable portal, and a concrete guniting device, a jumbolter device and a steel arch splicing device are arranged on the movable portal; the steel arch splicing device comprises a moving mechanism used for moving the segmented steel arch, a grabbing mechanical arm used for grabbing the segmented steel arch and a conveying mechanism used for conveying the spliced steel arch, the grabbing mechanical arm is matched with the moving mechanism, and the conveying mechanism is matched with the moving mechanism. The steel arch splicing device is arranged on the movable portal, so that the splicing process of the steel arch is mechanized, the jumbolter device and a guniting device are integrated, the device integration degree is high, cooperative and efficient operation can be achieved, the working efficiency is improved, the arch is timely supported, the supporting efficiency is high, the quality is more stable, and the safety of tunnel construction is improved; and the operation rack is simple in structure, low in failure rate and capable of saving production cost.

The invention discloses a shield construction method for a subway underneath passing high-speed rail line, which comprises the following steps: after a shield tunneling machine is adopted to perform tunneling in a rock-soil layer to reach a first preset distance away from the high-speed rail line, the shield tunneling machine continues to perform tunneling to excavate a tunnel, and segments are mounted in the tunnel to form an annular lining; grouting is synchronously conducted between the constructed annular lining and the rock-soil layer; and after the shield tunneling machine conducts tunneling through the high-speed rail line and exceeds the second preset distance of the high-speed rail line, a conventional method is adopted for continuing to conduct tunneling. The method has the advantages of capability of reducing settlement during construction and after construction, high safety, simplicity and convenience in construction, easiness in operation, popularization and implementation and the like.

The invention discloses a self-adaptive steel structure connecting joint and a connecting method thereof and belongs to the technical field of steel structures. According to the self-adaptive steel structure connecting joint, a fourth connecting mode of H-shaped steel can be provided, the high-strength connecting joint is adopted for performing wrapping connection on the H-shaped steel, the H-shaped steel is connected conveniently in a high-temperature phase shape by depending on an enhanced double-way memory effect of a shape memory alloy, the H-shaped steel can be effectively retained and abutted in a low-temperature phase shape, and expansion connection between a pair of H-shaped steel and the connecting joint is achieved; meanwhile, specially-treated positioning rods are arranged for auxiliary purposes, and the positioning rods have the function of indirectly detecting H-shaped steel stress transmission while having the function of positioning the H-shaped steel; and on the one hand, the strength of connecting between the H-shaped steel can be remarkably improved, on the other hand, stress transmission between the H-shaped steel and non-normal detection are facilitated, and technicians can timely perform reinforcing and strengthening.

The invention provides a solar light-emitting diode factory building illuminating lamp and relates to the technical field of illuminating lamps. The illuminating lamp comprises a transverse plate, supporting rods are respectively arranged on two sides of the top of the transverse plate, the transverse plate is fixed on the inner top of a factory building through the supporting rods, and a mounting plate is longitudinally arranged on the front face of the transverse plate. The illuminating lamp is characterized in that a groove is longitudinally arranged in the bottom face of the mounting plate, a first spring is fixedly arranged on the inner top face of the groove, a movable plate is fixedly connected to the bottom of the first spring, sliding blocks are fixedly arranged on the two sides of the movable plate respectively, the two sliding blocks are arranged in two sliding grooves respectively, the two sliding grooves are formed in the two sides in the groove respectively, and the sliding blocks are in sliding fit with the sliding grooves. The bottom of the movable plate is connected with an illuminating lamp through a chain, and the illuminating lamp is located below the mounting plate. The invention aims to solve the problems that an existing workshop lighting lamp is installed at a certain height, when people want to clean dust on the lighting lamp, people need to stand on a platform to look up the lighting lamp to clean the dust, and the operation is very inconvenient.