摘要:
The method for preventing and controlling glacial lake outbreak flood and related debris flows by the present invention is mainly controlling the scale of the floods by separating water and rocks and dispersing its energy step by step. The cascading amplification effects of floods can be reduced by controlling the initiation of source material with energy dissipation by using ground sills, groups of piles, and placed large stones and prefabricated artificial structures. The diversion dam built in the downstream area discharge floods in different layers, which can quickly guide water to the main river. The preconstructed engineering system can be used in a timely manner to prevent and control floods and debris flows induced by a sudden outburst of glacial lakes in areas with important facilities and inhabitants enduring the risk of natural hazards. Prevention and control systems can separate floods and debris flows and dissipate their energy. The groups of ground sills and check dams gradually dissipate the energy of floods, prevent high-energy boulders, and control the initiation of source materials in the channel and bank. Moreover, the systems can also separate the water and rocks in dilute debris flows or debris flows with high bulk densities but low viscosities. The diversion dams also enhance the separation function and keep the flood and debris flow discharge in the lower and upper channel to the main river.
摘要:
A liquid containment berm and its method of creation, assembly and use, wherein the berm has a floor member and an outer wall member created by applying an expandable foam polymer along a desired retention or flow control pathway, the foam polymer expanding to form the liquid impermeable outer wall member. Apertures are provided in the floor member such that the expandable foam polymer passes through the apertures to secure the outer wall member to the underlying base surface.
摘要:
A process for forming an artificial reef includes the steps of forming a form having a geometric shape, applying at least one blockout onto a surface of the form such that the blockout extends outwardly of the surface of the form, applying a sprayable concrete over the form and the blockout, curing the sprayable concrete on the form for a period of time, removing the blockout from the surface of the form and from the cured sprayable concrete, and removing the form from the cured sprayable concrete. A base is formed having an upper surface. The lower end of the form is positioned upon the base. The sprayable concrete is sprayed over the upper surface of the base.
摘要:
A flood barrier device that includes a fluid-tight flexible chamber with front panel, a rear panel, opposite lateral sidewalls, top end walls, bottom end walls and an opening to allow the introduction of fluid into said chamber. The device includes a pair of support members that include a rigid spar connected to the chamber and having a bend at a medial position to orient a first section of the chamber in a first horizontal plane and a second section of said chamber into a second upright plane and a re-sealable waterproof seal device between the chamber and an adjacent fluid tight flexible chamber.
摘要:
The invention relates to a flood control device with direct sensing and control. The flood control device consists of a float which is connected with a flood barrier sheet and the flood barrier sheet will be pulled up by the float according to the flood water level. The flood barrier sheet is fixed at the support frame by having flaps. The flaps are filled by compressed air. The flood barrier sheet has a rounded ball shape protruding edge at four sides of the sheet which will be fully secured from slip out due to the pressure exerted from the flood water by compressed air filled flaps. The flood control device is anchored onto the ground by having a shaft (which is inserted into the hole of the bottom piece through a hard rubber ring at shaft end and groove at the bottom piece). A stand is anchored onto the ground and connected to the support frame of the flood control device with metal structure to prevent from collapsing due to force from the flood water.
摘要:
Slurry walls and methods of using those slurry walls to seal unlined solar ponds are provided. The slurry walls are formed from a mixture comprising clay and cement in water. A trench is keyed into the dike surrounding the solar pond, down to a geotechnically predetermined level. The slurry is deposited into the trench and allowed to harden, after which it is covered with a membrane or other covering. The inventive slurry walls reduce, and preferably prevent, leakage of water from the solar pond.
摘要:
A roller compacted concrete (RCC) dam is formed from inverted T-shape face panels to produce a lower sloped profile and L-shape face panel to produce an upper vertical profile. The face panels have drain openings in their penetrating legs to communicate with drain fill lifts placed against the vertical rise of the face panels. RCC lifts are placed on the penetrating legs to lock the placement of these face panels. The drain openings provide terminal drainage for lift line seepage. The inverted T-shape face panel has both a protruding leg and a penetrating leg projecting into the RCC lift. The protruding leg is provided with a dowel for gripping and alignment that permits raising and lowering of the face panel and is received within a sleeve in the face panel therebelow.
摘要:
A dam according to the present disclosure includes a main dam including a first reservoir, and at least one first discharge part configured to discharge water stored in the first reservoir, an auxiliary dam spaced apart from the main dam at a predetermined interval and including a second reservoir configured to store the water discharged from the main dam, and at least one second discharge part configured to discharge the water stored in the second reservoir, and an underground water path being provided separately at a lower side of a bottom surface of the river or stream under a lower side of the second reservoir, and including a third discharge part.
摘要:
This patent pertains to secondary containment systems. One implementation includes a support assembly that includes an elongate post member and a stabilization plate. In one instance, a stabilization plate is mounted on the elongate post member to reduce movement of the elongate post member when the stabilization plate is embedded in the ground. Another implementation includes a panel splice assembly including reinforcing members that secure overlapping, corrugated panels.
摘要:
The present invention relates to an economical debris flow blocking dam structure and a construction method thereof. The structure has an excavated foundation surface, and a dam body of the blocking dam is composed of a key wall arranged at a dam toe, dam body concrete wrapped on an outer surface of the whole blocking dam, concrete masonry block stones filled inside the blocking dam, and a plurality of drain holes formed in the dam body in a top and twin-side bottom shape; an open and centralized overflow weir is arranged on the top of the blocking dam; an overflow surface has a horizontal middle and extends to two sides along a longitudinal slope i of 10-20%; and the key wall is anchored on the foundation surface through joint bars stretching into bedrock, and an anti-scouring pit is formed close to a downstream side of the key wall.