863 results about "Hydropower engineering" patented technology

The invention belongs to the field of safety production and early warming emergency of construction of water conservancy and hydropower projects and relates to an Internet of Things framework type system and method for monitoring and early warning of major accident potential safety hazards of a water conservancy and hydropower project. According to the Internet of Things framework type system and method for monitoring and early warning of the major accident potential safety hazards of the water conservancy and hydropower project, information of the potential safety hazards which can cause a potential accident in the area of the water conservancy and hydropower project is recognized and positioned to determine the types and levels of the potential safety hazards, and judging of the types and levels of the potential safety hazards and information statistics are carried out; meanwhile, the geographic position, spatial position, dynamic change, state change and state prediction of monitoring points in the area are analyzed by combining with the historical information of the area, early warning information can be generated automatically after potential safety hazard information in the monitoring area is beyond a set alarm value, and comprehensive data information of the potential safety hazards in the area and early warning of the major accident potential safety hazards of the project are provided through communication transmission.

This invention relates to a structure and analysis method for geographical 3-D unified models of water conservancy and water and electricity engineering, which couples multi-source data by the mixed data structure of NURBS YIN and BRep to realize 3-D unified modeling to all modeling objects and analyze said 3-D model including: analyzing the space geographical structure of the coupled multi-source data, carrying out sorted geometry modeling based on the mixed data structure of the NURBS, TIN and the BRep, carrying out Boolean operation based on the space relation among them and analysis and test for reliability to finish the structure of the 3-D unified model and finish the geographical analysis to water conservancy and water electricity engineering.

The invention relates to a high-flow high-speed jet plugging grouting technique under a high-pressure water head of a hydropower station. For water permeability and water seepage of flow guide holes under pressure of the high water head of 50m to 130m, the technique adopts a 'high-flow high-speed jet plugging drilling orifice safety control device under the high-pressure water head' and a 'high-pressure-resisting water-returning safety control device in a drilling rod under the high-pressure water head' which integrate multiple functions of water stopping in the drilling rod, water drainage, pressure relieving, orifice closing, safe drilling construction and the like, solves the construction of safe drilling and grouting under the working condition of water burst of the high water head inthe orifice and completes plugging under the condition of the high water head, which is a difficulty without being recorded in world hydropower engineering construction. The high-flow high-speed jet plugging grouting technique reduces direct and indirect economic losses of over ** and has good economic benefit, simultaneously creates a new way for the plugging difficulties of water permeability and water seepage of flow guide holes under pressure of the high water head of 130m of the hydropower station in China.

The present invention relates to a digital management method and system used for a water conservancy and hydropower engineering construction process. The method comprises the steps of establishing a construction process integrated data acquisition and analysis platform; establishing a building information model (BIM) management platform by taking a three dimensional platform as the basis; integrating the simulation and analysis services to realize the dynamic evaluation and the analysis prediction; realizing the process management facing a construction technology by taking the integrated data acquisition and analysis platform as the basis; integrating the specialized sub-systems to realize the comprehensive analysis and evaluation; integrating the digital construction equipment to realize the on-site digital monitoring and the intelligent control. According to the present invention, by taking a building information model as the basis, taking a digital construction cooperative working platform as the core, and facing a concrete construction specialty, an integrated, digital and intelligent management platform covering the engineering on-site construction full process is realized, the refinement construction is realized, the engineering progress and the quality management level are improved, the dynamic safety of the engineering structures is guaranteed, and the full life circle management of an engineering is served.

An embodiment of the invention discloses a stable-control blasting method for open-pit mine slopes, which relates to the technical field of exploitation of open-pit mines and is invented for solving the problem that damage of the slopes by blast vibration needs to be relieved so that the open-pit mine slopes can be highly stabilized. The method includes: quantity of priming explosive of a largest section in a blasting area close to an open-pit mine slope is limited; and delay time for open bench blast control rows of the blasting area close to the slope and blast holes corresponding to all the control rows are 1-4ms per hole-pitch meter, and delay time for rowed blast holes is 10-30ms per row-spacing meter. The stable-control blasting method is applicable to open-pit mining, and also applicable to hydropower engineering, excavation of large-sized underground workshop chambers, cutting engineering and the like, which need slope maintenance.

The invention relates to an unsteady cavitation flow-excited vibration multi-field synchronous measurement system for a water tunnel experiment and belongs to the ship and underwater vehicle engineering and water conservancy and hydropower engineering technology field. The system is composed of an experimental section, an experimental model, a high-speed camera, a synchronous trigger switch, a laser Doppler vibration meter, a data acquisition instrument, a data processing system / computer and display assembly and a light source. According to the system of the invention, rising edge voltage signals are generated through the synchronous trigger switch, trigger signals are controlled by using the voltage signals, and therefore, the signal acquisition starting instructions of the high-speed camera and the laser Doppler vibration meter are controlled quantitatively and precisely, and the quantitative and accurate synchronous measurement of an unsteady cavitation flow field and a structure field can be realized; and data obtained through multi-physical field synchronous acquisition are subjected to preprocessing, time-domain analysis, frequency-domain analysis and time-frequency analysis,and therefore, reliable analysis experimental data can be provided for the study of fluid-structure interaction characteristics.

A vibration signal processing method based on HHT (Hilbert-Huang Transformation) and related analyses includes steps as follows: using EMD (empirical mode decomposition) to decompose vibration signals; carrying out related analyses to each mode component obtained through decomposition; carrying out Hilbert transformation to denoised signals and obtaining a Hilbert spectrum. Aiming at the defect that noisy signals cannot be distinguished in signals if the HHT method is applied directly, the invention provides the method based on HHT and the related analyses, and denoises noisy signals. Through analyses on the Hilbert spectrum of the extracted noisy mode components and a marginal spectrum, the frequency and amplitude information of noisy vibration signals can be effectively extracted. The method can be used for processing signals of metallurgical machinery, aerospace, hydropower engineering, aeromancy and so on, and effectively remove noise.

The invention discloses a multistage assisted-driving type ecological fishway facility and an operation method of the facility, relates to the field of fish passing buildings and water conservancy and hydropower engineering ecological environments, and discloses a fishway building and fish passing control method suitable for key water control projects with middle and high water heads. The multistage assisted-driving type ecological fishway facility comprises a plurality of stages of fishway units which are distributed in a step mode, a fishway assisted-driving system, a bionic river system, a fishway energy dissipation system and a fish luring monitoring system. When the fishway facility operates, the fishway facility is used in cooperation with a computer automatic control system, and the aim of fish-class step-by-step intelligent assisted-driving upstream sailing is achieved. The fishway facility and the operation method of the fishway facility have the advantage that the facility can assist fishes in passing through the key water control projects with the middle and high water heads to run and sail upstream, and consumed physical ability is small, and the fishway facility is ingenious in design, high in automation degree, capable of greatly improving the fish passing effect of the fishway, and beneficial to natural fishery resource protection, and guarantees continuity and diversity of a river aquatic ecosystem.

The invention relates to a full-split single pore sound wave test device and a debugging method thereof. The technical problem to be solved is to provide a full-split single pore sound wave test device and a debugging method thereof. Good coupling between a detection probe and the pore wall is guaranteed, and the interference of wave velocities of leather bags on real wave velocity of rock mass is overcome when the quality of the rock mass is poor. The technical scheme to solve the problem is that: the full-split single pore sound wave test device is provided with the detection probe on which a group of transmitting transducers and receiving transducers at intervals are arranged; an independent leather bag is coated outside each transducer; and each leather bag is provided with an independent thin water injection tube. The debugging method comprises the following steps: a, filling water in the leather bags, and putting the probe in a detection hole; b, filling water in the leather bags again and sampling; c, if the wave form is fuzzy, rotating or moving the probe and repeating the step b until the wave form is clear, and starting to detect. The full-split single pore sound wave test device and the debugging method thereof are mainly applied to nondestructive testing of loose areas for side slope and tunnel excavation in hydropower engineering, transportation, mine and other projects.

The invention relates to a bed load sediment feeding device for river engineering model test, which belongs to the technical field of testing of river engineering models in water conservation and hydropower engineering. The bed load sediment feeding device for river engineering model test mainly comprises a support, a sediment container, a throttle valve and an automatic control platform for sediment transport rate, wherein the sediment container is mounted at the top of the support and used for containing sediment and allowing the sediment to automatically slip out from a bottom sediment leak under the action of gravity, the throttle valve is mounted at the bottom sediment leak of the sediment container, slip quantity per unit time of the sediment is obtained by controlling openness of the throttle valve, and the automatic control platform for sediment transport rate is located below the sediment container, supported at the bottom of the support and used for automatically controlling the sediment transport rate. The bed load sediment feeding device for river engineering model test has the advantages of high automation level, high precision and high adaptability to complex test conditions, and has significant production, application and promotion values.

The invention relates to a real-time measurement device with sand-containing concentration and muddy water flow velocity vertically distributed in a river model test, and belongs to the field of water resources and hydropower engineering river model tests. The device is formed by a sand-containing concentration real-time measurement system and a muddy water flow velocity real-time measurement system in a coupling integration mode. The sand-containing concentration real-time measurement system comprises a laser device, a lens group, a light guiding fiber, and a high-resolution microspur camera. The muddy water flow velocity real-time measurement system comprises an integrated flow measuring pipe, a siphon pipe, a water filling pipe and a high-resolution micro-distortion camera. The two systems are integrated in a coupling mode, namely the two systems are mounted on the same testing support, and a computer and a synchronizer are used for controlling the two systems to carry out synchronous real-time measurement. The device has the advantages of being high in automation degree, high in precision, strong in adaptability to complex testing conditions and the like, the blank of synchronous real-time measurement equipment with sand-containing concentration and muddy water flow velocity vertically distributed is filled, and the device has important production application and popularization value.

This invention relates to a hydropower project used concrete admixture and its applications. The mixture mixed by grinding slag powder and grinding limestone powder, with the ratio of 4:6 to 7:3. Under the project design requirements to adjust the ratio of limestone powder, can gain varying activity of concrete admixture. With 30% to 70% of the amount used, not to increase consumption of concrete and can reduce concrete shrinkage. Iron (Fe-Mn) Slag from steel smelting industrial waste, sources is rich, is conducive to environmental protection; Using this invention, hydropower construction can make full use of the geographical situation to produce admixture, can reduce the long-distance transport of fly ash, economic benefits and reduce the adverse effects of supply and transportation of fly ash.

The invention relates to a water adding system of a ship lock and a construction method thereof. A technical problem to be solved is to provide a water adding system of the ship lock and a construction method thereof. The water adding system has the advantages of high energy dissipation efficiency, full utilization of lock head space, even water level surge height, favourable current joining condition and simple structure, can effectively solve energy and flow state distribution of high-speed current, and can expand new research field for design and type selection of moderate lift lock water delivery system. The technical scheme solving the problem is as follows: the water adding system of the ship lock comprises a lock head baseplate, lock head side blocks, a lock chamber baseplate and a lock chamber. The water adding system is characterized in that a water blocking wall and a lock head screen wall are connected between the lock head side blocks on two sides; a group of tongue-flap shape water inlets with vertical fall are arranged between the water blocking wall and the lock head screen wall; an annular water delivery corridor communicating the water inlet with the lock chamber is arranged in the lock head side block, and an energy consumption chamber is arranged between the outlet end and the water inlet of the annular water delivery corridor. The invention is mainly suitable for water conservancy and hydropower engineering and water transport traffic engineering.

The invention discloses a concrete injection machine with an airflow conveying device, integrating a mixing device, a feeding device and a material outlet device into a whole, in particular relates to the concrete injection machine uses an airflow conveying principle, utilizes the compressed air to convey the material from the soft pipe to the nozzle in the form of rarefied flow and directly injects the material. When in specific work, the concrete mixed in the material box enters a material feeding pipe under the action of a material falling cylinder and a vibration mechanism; subsequently, the concrete suspended in the material feeding pipe is quickly and sufficiently mixed with liquid accelerated agent at the nozzle of the injection pipe by the airflow power conveying action of the compressed air and is then injected out of the nozzle at high speed. The concrete injection machine has novel design, compact structure, good working effect, long service life, and wide market prospect in the fields such as hydropower engineering, underground tunnel, culverts, subway engineering and coal moor mine tunnels, and the like.

The invention discloses a large-scale underground cavern group layout method applied to water conservancy and hydropower engineering and underground storage cavern engineering. The underground cavern group layout method can give overall consideration to major factors having influences on underground cavern adjoining rock stability, particularly gives overall consideration to the crucial factor of the rock strength-stress ratio, enables a large-scale underground cavern group layout designing scheme to be scientific, and is overall in considered factors. The method includes the following steps: firstly, determining the positions of main caverns, then determining the axis directions of the main caverns, determining the thickness of a rock pillar between the main caverns, and finally determining cavern shapes of the main caverns. When the cavern shapes of the main caverns are determined, each main cavern is divided into an underground main power house, a main transformer chamber and a tail water surge chamber according to functions, the hole shape of each underground main power house and the hole shape of each main transformer chamber are in circular arch straight wall shapes or egg shapes, and each tail water surge chamber is in a cylinder shape or a gallery shape.

An embodiment of the invention discloses an open bench inter-hole differential control blasting method, which relates to the technical field of mining and is invented for solving the problems that resulting fragmentation degree needs to be better, blast vibration damage needs to be reduced, and large-scale blasting needs to be implemented effectively. The method includes: subjecting blast holes in a same row to inter-hole differential accumulation according to delay time of 1-5ms per hole-pitch meter, and performing inter-hole differential interval blasting; subjecting the blast holes in all rows to inter-hole differential accumulation according to the delay time of 10-30ms per row-spacing meter, and performing inter-row differential interval blasting; and filling at least one of the blast holes with a plurality of priming bombs or spaced charged explosive, and performing intra-hole differential interval blasting. The method is applicable to open-pit mining, and also applicable to large-scale earth-rock excavation engineering, large-scale hydropower engineering, large-scale civil engineering, large-scale underground workshop excavation and the like.

The invention discloses an excavation deviation processing method of a raise-boring machine for a deep vertical shaft. The method includes the steps that the position of a pilot hole tail end drill is determined according to the drill stem deviation angle, the vertical shaft height and other parameters, and a mucking pilot shaft and a muck discharging channel are formed through expanding excavation; then, after the mucking pilot shaft is formed, the vertical shaft is excavated in a drilling and blasting mode, and when the mucking pilot shaft deviates and loses the mucking function or mucking is unsmooth, expanding excavation is performed on the part between the vertical shaft and the mucking pilot shaft so that the mucking pilot shaft can perform mucking effectively and smoothly; after exaction is completed, the deviation expanding excavation part is backfilled so that the verticality of the vertical shaft can be guaranteed and the requirement of pressure steel pipe installation for the verticality of the vertical shaft can be met. According to the method, under the condition that a pilot hole deviates, it is guaranteed that the mucking pilot shaft performs mucking effectively, and the verticality of the vertical shaft is also guaranteed; in pressure vertical shaft or surge shaft construction in water conservancy and hydropower engineering, the method has the advantages of reducing repeated drilling extraction of a pilot hole, shortening the construction period and improving the strength of a backfilled region behind a pressure steel pipe at the bottom of a pressure vertical shaft, and therefore the method can be widely applied to small-diameter deep vertical shaft or inclined shaft construction with a short construction period.

The invention discloses a retaining dam, particularly discloses the retaining dam for hydraulic and hydro-power engineering and belongs to the technical field of design and construction of hydraulic and hydro-power engineering buildings. The retaining dam for the hydraulic and hydro-power engineering is simple in structure, convenient to construct and low in investment cost. The retaining dam comprises a transitional cushion material, an inverted filter layer, a rock ballast layer and an anti-seeping core wall composed of geomembranes, wherein the anti-seeping core wall is located in the middle of the retaining dam transversely and extends along the retaining dam longitudinally and vertically; the transitional cushion material, the inverted filter layer and the rock ballast layer are sequentially arranged in upstream and downstream directions of the anti-seeping core wall.

The invention belongs to the field of hydraulic and hydro-power engineering, and relates to a method for measuring the intensity of atomization rainfall formed by flood discharge in hydropower engineering. The method comprises the following steps of: collecting atomization rain by using two or three rain collecting tanks, wherein the shapes of the inlets of the rain collecting tanks is completely same, and each inlet plane is vertical to each other on space; respectively gathering the collected rainfall in corresponding water measuring tank by independent guide pipes to measure the intensity of the rainfall, and finally, calculating by subjecting the measured intensity of rainfall to a vectorial resultant to obtain the corresponding total atomization rainfall intensity and the rainfall direction. The method disclosed by the invention can be used for the observation of a model and a proto-model of the atomization rainfall in hydropower engineering, and the measured rainfall intensity data is excellent in regularity and high in precision, so that the research on the mechanism of atomization of flood discharge is prompted greatly, the atomization forecast accuracy of hydropower station engineering is enhanced, and the reliable guarantee is provided to the prevention of the disaster of atomization of flood discharge.

The invention discloses a bent slope underflow energy dissipation structure of water conservancy and hydropower engineering. The bent slope underflow energy dissipation structure of the water conservancy and hydropower engineering comprises a shoreside overflow weir, a discharging groove and a power dissipation pool which is a bent slope power dissipation pool. The power dissipation pool comprises a power dissipation pool bent slope segment connected with the discharging groove and a power dissipation pool flat bottom segment which is a manual deep pool with a flat bottom. The head of hydraulic jump in the power dissipation pool is formed on the power dissipation pool bent slope segment. Stable and complete hydraulic pump is formed in the bent slope power dissipation pool. Multiple power dissipation mounds which can assist in dissipating energy are arranged in the power dissipation pool. With the power dissipation structure, the problems of dissipating energy of water flow with large flow, a low Froude number and tail water with a large water level amplitude of variation are economically and effectively solved. The energy dissipating rate is effectively improved. The power dissipation pool bent slope segment is used and the power dissipation mounds are arranged on the power dissipation pool flat bottom segment to assist in dissipating energy, the length and the depth of the power dissipation pool flat bottom are effectively reduced, the energy dissipating rate is improved, engineering amount and investment are reduced, a digging height and a digging range of a slope in an engineering zone are reduced so as to reduce damage and affection on the ecological environment in the engineering zone by construction, and good social and economic benefits are achieved.

The invention belongs to the field of water conservancy and hydropower engineering, and provides an intermediate frequency hot bending method for a steel pipe. A special bending jig frame is adopted in the method, fulcrums at two ends support the steel pipe, the steel pipe is symmetrically heated by adopting two pieces of intermediate frequency induction heating system equipment, pressure is applied to the steel pipe in the middle by using a hydraulic jack mechanism, the inner arc of the steel pipe is heated and pressed, the steel of the pipe wall is shrunk and deformed, and a catenary arch axis of design requirement is formed by technical means. The method makes the field hot bending of the ultra-long big-diameter high-strength steel pipe possible, fills the international and national blank, and brings huge economic benefit; intermediate frequency pipe bending machine purchasing and reforming costs can be saved, a large amount of big member transport cost can be saved, the pipe bending efficiency can be improved, and the processing cost is reduced; and the adopted intermediate frequency heating reduces the performance influence on the parent metal of the steel pipe, and simultaneously solves the catenary hot bending problem that X70 pipeline steel is applied to a bridge engineering arch rib.

The invention discloses a 1000MPa grade low-crack-sensitive steel hydroelectric steel plate for large-scale hydropower engineering, the 1000MPa grade low-crack sensitive steel hydroelectric steel plate has a thickness of 10 to 50 mm, and comprises the following chemical components by mass: 0.06-0.17% of C, <=0. 15% of Si, 0.8 to 2.0% of Mn, <= 0.010% of P, <= 0.003% of S, 1.0 to 2.0% of Ni, 0.10 to 0.25 % of Cu, 0.3 to 1.5% of Cr, 0.4 to 0.7% of Mo, <= 0.1% of V + Nb + Ti, 0.015 to 0.045% of Als, Ce <= 0.020% of, CEV <= 0.64% of, Pcm <= 0.28% of, and balance of Fe and residual elements. Compared with the prior art, the 1000MPa grade low-crack sensitive steel hydroelectric steel plate has the advantages of high strength, high toughness, low crack sensitivity, good surface quality, good weldability and the like.

The invention relates to a stress unloading, water injecting and drilling and blasting method for longitudinal structure surface structural strong rockburst regions. The invention aims to solve the longitudinal structure surface structural strong rockburst problem in the process of tunneling deep-buried tunnels (tunnels and roadways). The technical scheme is that the stress unloading, water injecting and drilling and blasting method for the longitudinal structure surface structural strong rockburst regions is characterized by comprising the following steps of: a, drilling a group of blast holes which are uniformly and symmetrically distributed in an excavation surface; b, cleaning the excavation surface by clean water once every 10 minutes, and filling water in each blast hole during the period; c, filling explosive at the bottom of top holes, filling the explosive at the bottom of middle holes, filling the explosive in side holes, and filling the explosive at the bottom of bottom holes; d, firstly blasting the top holes, the side holes and the bottom holes, then blasting the middle holes, and de-slagging after blasting; and e, sequentially repeating the steps a, b, c and d until the excavation surface fully penetrates through the whole longitudinal structure surface. The method is suitable for underground engineering such as hydropower engineering, traffic and mine, and is especially suitable for the longitudinal structure surface structural strong rockburst regions.

The invention discloses a rock burst prevention and treatment method based on explosive tamping hydraulic fracturing. The rock burst prevention and treatment method comprises the following steps that stemming is made through a stemming making machine; a ceramsite proppant is selected; the selected ceramsite proppant is mixed into water, and the water mixed with the ceramsite proppant is poured into plastic bags, so that water bags are made; at least three rows of advance stress relieving blast holes are formed in the excavating face of a to-be-excavated tunnel through a drilling jumbo; explosive charging is conducted; the explosive charging structure that the water bags are charged into the bottoms of the blast holes, and composite backfilling and blocking are conducted on the tops of the blast holes through the stemming is adopted, so that the water bags and explosives are charged in sequence, and blocking is conducted through the stemming; the advance stress relieving blast holes are sequentially blasted in rows through a millisecond blasting method; and deslagging is conducted, and the steps are repeated till excavation is completed. The rock burst prevention and treatment method based on explosive tamping hydraulic fracturing is suitable for prevention and treatment of powerful rock burst (impact ground pressure) in the deeply-buried cavern excavation or deep mining process in the fields of water conservancy and hydropower engineering, transportation, mines and the like.

The invention belongs to the technical field of hydraulic structures of hydraulic and hydropower engineering and particularly relates to a construction method of a 150m-300m high concrete faced rockfill dam with a cemented sand and gravel structure layer. The construction method of the 150m-300m high concrete faced rockfill dam with the cemented sand and gravel structure layer comprises the cemented sand and gravel structure layer arranged between a concrete face and a cushion area. According to the method, the cemented sand and gravel structure layer is additionally arranged between the concrete face and the cushion area to exert effects of secondary anti-seepage and support on the concrete face of the dam, and the deformation compatibility of the concrete face and the cemented sand and gravel dam is improved to solve the technical problems of collapse and damage of the concrete face of the dam caused by seepage deformation.

The invention discloses a layered water-taking water-temperature observation device of a reservoir stop log gate and an observation method of the same, which belong to the technical field of water resources and hydropower engineering. The device comprises a water inlet, wherein a trash rack, a stop log gate and an electricity-generation water inlet horn mouth section are disposed at the water inlet, the trash rack is located in front of the water inlet, the stop log gate is located in the water inlet, the electricity-generation water inlet horn mouth section is located on the downstream side of the water inlet, a before-dam water temperature and water level observation device is disposed on the upstream side of the water inlet, and an after-dam electricity-generation tail water water-temperature observation device is disposed on the downstream side. In the technical scheme, the stop log gate is disposed at the water inlet to realize layered water taking, reservoir surface water enters a water taking duct from the top of the stop log gate of the water inlet, and an opening height of the stop log gate is controlled according to changes of a reservoir water level, so that the water taking from the reservoir surface and electricity generation can be ensured, lower-layer water in a reservoir is avoided from flowing towards the downstream direction and generating harmful influences to a downstream ecological environment, unit independent water supply is realized, and running operations become flexible.

The invention provides a hydropower engineering immigrant assessment information system, comprising a mobile client and a background server; the background server comprises a sample template creating module, an investigation item creating module, an investigation total questionnaire storage database, a user management module, an administrative division information table storage and management module and an investigation total questionnaire feedback storage module; and the mobile client comprises an investigation total questionnaire acquisition module, an administrative division information table download module, an automatic sample body filling module, an investigation item period judgment module, an investigation total questionnaire answer receiving module and an automatic investigation total questionnaire same question-answer filling module. The system has the advantages: for the same investigation item implemented stage by stage, investigation total questionnaires in different stages have constant questions and answers, unchanged answers can be automatically filled via the automatic investigation total questionnaire same question-answer filling module, and repeated input of a user during investigation is not needed, so that the investigation efficiency is improved.

The invention relates to the underground cavern designing method and discloses a large-sized underground cavern group arrangement designing method which is applied to water resources and hydropower engineering and underground storage cavern engineering to scientifically and reasonably confirm positions of the underground cavern group. According to the large-sized underground cavern group arrangement designing method, the rock strength stress ratio, site area crustal stress field characters, the cavern group effect, the main cavern size and the like key factors which influence arrangement of the underground cavern group are considered comprehensively according to the basis that the main cavern group longitudinal axis direction, the main cavern shape and size and the cavern distance are confirmed and the main cavern group valley wall slope rock mass thickness and the overlaying rock mass thickness are further confirmed. The valley slope crustal stress character quantitative analysis method, the valley slope side rock mass thickness computational formula and the cavern group overlaying rock mass thickness confirming method are scientific and reasonable, high in quantization degree, strong in operability, convenient for designer application and applicable to large-sized underground cavern group arrangement and design under various crustal stress levels and complete geological conditions.