Inside horizontal displacement monitoring devices of dam

The utility model discloses an inside horizontal displacement monitoring devices of dam. The device is that the monitoring of dam horizontal displacement is carried out to the principle of utilizing the gauss law, promptly through say the pre -buried chemical filling permanent magnet in bottom at monitoring pipe, it extremely forms closed -loop always to get back to S from the N utmost point because of the magnetism sense line of magnet, magnetism is felt the relative density of line and is showed that the magnetic is strong and weak relatively, can be similar to according to the gauss law thinks that the absolute value of a certain specified point magnetic flux is more little big more on the contrary along with the distance of magnet, consequently the concrete position of measurable signal source after gaussmeter and the odometer coupling, the horizontal displacement of indirect measurement dam. The utility model discloses measure accurate, disturb less, the precision is high, permanent ...

Fiber grating geosound of debris flow sensing system

The utility model provides a fiber grating geosound of debris flow sensing system, includes broadband light source, first optical circulator, a transmission fiber, light power distribution unit, second optical circulator, the 2nd transmission fiber, and broadband light source is connected with the first port of first optical circulator, and the second port and a transmission fiber of first optical circulator are connected, and light power distribution unit's input port is connected to the third port of first optical circulator, light power distribution unit's an output port is connected with the first port of second optical circulator, and the second port and the 2nd transmission fiber of second optical circulator are connected, and the third port and the luminous intensity differential demodulation device of second optical circulator are connected, and light power distribution unit's the 2nd output port is connected with luminous intensity differential demodulation device. A transmission ...

Inside horizontal displacement monitoring system of geotechnical engineering

The utility model provides a geotechnical engineering is the inside horizontal displacement measurement system of dam especially, constitutes by measuring dolly, traversing passageway, power control equipment, measuring -signal source, signal processor. It comprises signal source inductor and displacement sensor coupling to measure the dolly, the measuring -signal source is the permanent magnet, is filled with external isolated by the built -in chemical material of mould, the traversing passageway can be warp along with the dam by the circular steel pipe flange stagnant water sealing connection of polymer plastic pipe and the same diameter in coordination, power control equipment is double dynamical aggregate unit, double dynamical one pull wire of respectively establishing, and the pull wire length of upper portion power probably is the twice of lower part power, system signal processor can confirm horizontal displacement in real time and realize figure drawing. The inside horizontal displacement's ...

Fish body length lossless measurement water tank

The invention discloses a fish body length lossless measurement water tank. The fish body length lossless measurement water tank comprises a glass water tank body, a directed fish driving device, a colored steel indium ruler, steel indium ruler fixing strips and a video amplification recording device. Compared with the prior art, the fish body length lossless measurement water tank has the advantages that the structure is simple, installation efficiency is high, use is convenient, installation and operation can be carried out conveniently and rapidly, and the working environment of experimenters can be well improved; the purpose of measuring the body length of experimental fishes can be effectively achieved, video data of each fish can be stored for future reference, the experimental fishes are effectively protected in the process of drive, and the fishes can be kept in the healthy body state so that the requirements of experiments can be met.

Fish water tank experiment fish driving device

The invention discloses a fish water tank experiment fish driving device which comprises longitudinal meshes, a horizontal mesh, bottom fixing supports and mesh fixing clamps. The longitudinal meshes are components which are provided with various mesh holes and can be randomly combined, the horizontal mesh is a hard mesh with a 5mm small hole diameter, vertical movement of the horizontal mesh drives experimental fishes to vertically move, left-right and front-back movement of the longitudinal meshes drives the experimental fishes to horizontally move, the meshes can be mutually fixed by the mesh fixing clamps, and the longitudinal meshes move front and back and can be fixed into an experimental water tank by the bottom fixing supports. The fish water tank experiment fish driving device is simple in structure and high in mounting efficiency, directional fish driving can be conveniently performed in an experiment in the water tank, the fish water tank experiment fish driving device can be ...

Constructional material curing agent and its application in constructional material

Geotechnical-engineering internal horizontal displacement monitoring system

The invention discloses a geotechnical engineering especially a horizontal displacement monitoring system inside a dam. The internal horizontal displacement monitoring system is composed of a measuring cart, a cart running passageway, a power control device, a measurement signal source, a signal processor and bundled software; the measurement cart is composed of a signal source sensor and a displacement sensor by coupling; the measurement signal source is a permanent magnet isolated with the outside by a die filled with chemical materials; the cart running passageway is connected through a polymer plastic pipe and a circular steel tube flange identical to the polymer plastic pipe in diameter in a watertight seal manner and can be collaboratively deformed with the dam; the power control device is a dual-power linkage device, each power is provided with a pull wire, and the pull wire of the upper power is about twice of that of the lower power; the signal processor of the system can determine ...

Buried drip irrigation system

The invention discloses a buried drip irrigation system which comprises a head pivot, a water conveying and distributing pipe network connected with the head pivot, and a field irrigation unit connected with the water conveying and distributing pipe network. The head pivot comprises a water pump unit, a pressure relieving valve and a water return pipe, wherein the inlet of the water pump unit is connected with a water source through an upper water pipe, the outlet of the water pump unit is connected with the water conveying and distributing pipe network through a water conveying dry pipe, the pressure relieving valve is arranged at the joint of the water conveying dry pipe and the water conveying and distributing pipe network and used for controlling pressure at the inlet of the water conveying and distributing pipe network, and the inlet of the water return pipe is connected with the pressure relieving valve. By means of the buried drip irrigation system, it is ensured that the pressure ...

Ultra-weak fiber grating carbon fiber reinforcing rib

An ultra-weak fiber bragg grating carbon fiber reinforcing rib comprises an optical fiber inscribed with a plurality of ultra-weak fiber bragg grating sensing units, the optical fiber is pre-coated with a high-temperature-resistant coating, and the optical fiber is arranged in a carbon fiber rib to form the ultra-weak fiber bragg grating carbon fiber reinforcing rib. The end part of the optical fiber is provided with a metal spiral armor, and the metal spiral armor partially extends into the carbon fiber rib. According to the ultra-weak fiber bragg grating carbon fiber reinforcing rib, the creep deformation influence of an inner coating in a traditional optical fiber is avoided, and spectrum chirp or distortion generated when the reinforcing rib is manufactured is reduced or eliminated. The reinforcing rib integrates the excellent performance of the carbon fiber, and has the advantages of high strength, large strain range, good repeatability, easiness in fusion with a large-scale structure ...

Diatom that grows nonparasitically upon another plant is cultivateed and collection system

The utility model relates to a diatom that grows nonparasitically upon another plant is cultivateed and collection system, this cultivation includes body on water with collection system, boxes and baskets, the culture medium, stainless steel wire rope, the ground tackle, the plate, the brush, the narrow -mouthed bottle, and formaldehyde reagent etc. Temperature and the integrated intelligent remotely monitored sensor of the velocity of flow are installed to boxes and baskets, body top on water is arranged in to the signboard, and signal acquisition and transmitter and power supply are installed to the body, and the temperature and the velocity of flow pass through wireless remote control monitoring and wireless transmission to data center. The utility model discloses a nimble in the rivers and lakes that lack qualified sampling medium, conveniently realize growing nonparasitically upon another plant cultivation and the collection of diatom with collection system is cultivateed to the diatom ...

Cast-in-place pile online monitoring system and method based on ultra-weak fiber bragg grating

The invention discloses a cast-in-place pile on-line monitoring system and method based on an ultra-weak fiber bragg grating, and the system comprises an ultra-weak fiber bragg grating optical cable which is internally provided with an ultra-weak fiber bragg grating array in an inscribing manner, and is provided with a plurality of fixed points at equal intervals. The ultra-weak fiber bragg grating optical cable is fixed on a reinforcement cage of a tested cast-in-place pile through a fixed point, the ultra-weak fiber bragg grating optical cable is connected with the ultra-weak fiber bragg grating demodulation module, and the ultra-weak fiber bragg grating demodulation module is wirelessly connected with the cloud server. The ultra-weak fiber bragg grating uwFBG is introduced into pile foundation strain monitoring, the cast-in-place pile online monitoring system and method based on the ultra-weak fiber bragg grating are provided, the monitoring capacity of a pile foundation sensing system ...