CN104564079A - Method for preventing sediment pollution in ocean placer exploitation - Google Patents

Abstract

A suspension type isolation screen is arranged at the periphery of a pollution production region (exploitation and tail-escaping region), so that the floating sediment is isolated and contained in a limited range, the pollution to the external ocean from the mining operation is prevented and controlled.

Description

A kind of method of silt pollution is prevented and treated in Marine placer exploitation

Technical field

The invention belongs to marine mining technical field

Background technology

Exploitation and the operation of throwing tail of Marine placer can produce a large amount of suspension bed sediment, and because the free-falling velocity of thin matter silt is minimum, under tide and stormy waves action of ocean current, diffusion length is far, has severe contamination to the marine eco-environment; General mine is all rely on silt natural subsidence at present, or only arranges floating fender body at the water surface, poor effect; The object of the invention is: arrange a kind of from the water surface to the floated isolation screen in seabed, basic isolated adopt and throw the pollution of tail silt to outside, protect the marine environment.

Summary of the invention

Floated isolation screen of the present invention primarily of float 3., tying-up band 2., upper hanging stick 6., lower hanging stick 7., hanger frame 5., venetian blind type screen 4., 9. 8. filter net type screen form with weight; Wherein: upper hanging stick connects float, and lower hanging stick connects weight, and arrange hanger frame between upper and lower hanging stick, hanger frame can be flexibility, framework is arranged venetian blind type screen or filter net type screen; The monomer length of every bar isolation screen is not limit, and multiple monomer series-connected composition goes along with sb. to guard him barrier together; Accompanying drawing 1 midship section 1---1 is the form of venetian blind type screen, section 2---2 is forms of filter net type screen; The swash plate of venetian blind type screen mainly tackles comparatively coarse sediment, its sedimentation short; Filter net type screen primary barrier fine sediment, makes its flocking settling before net, when two-layer filter screen established by screen, near one deck low mesh number in Chan Wu district, and the high order number of another layer; Generally should arrange multiple tracks in periphery, Chan Wu district goes along with sb. to guard him barrier, and the closely place in Chan Wu district should select venetian blind type screen, and distant location should select filter net type screen; The isolation monomer of adjacent twice barrier will be staggered, and stays suitable space, pass through for marine organisms between monomer; The float of floated isolation screen and weight will be arranged in pairs or groups suitably, make screen keep vertical suspension, and suitably, the micro-dew face of float, is convenient to drag migration for weight and seabed distance; Under the effect of multiple tracks isolation barrier, most silt can be blocked and contain in limited range, and outside marine environment can be protected.

Figure of description illustrates:

Accompanying drawing 1 is floated isolation screen diagrams, marks symbolic significance as follows in figure:

1.---mark pole, 2.---tying-up band, 3.---float, 4.---venetian blind type screen, 5.---hanger frame, 6.---upper hanging stick, 7.---lower hanging stick, 8.---filter net type screen, 9.---weight, 10.---sea level.

Claims (1)

1. prevent and treat a kind of method of silt pollution in Marine placer exploitation, way is:

Peripheral in Chan Wu district (exploitation and throwing tail region), arrange floated isolation screen, by floating silt isolation, contain in limited range, control mining is to the pollution of outside ocean.