Collection apparatus and collection method for coral reef column-like sedimentary rock core sample

Abstract

The invention discloses a collection apparatus and a collection method for a coral reef column-like sedimentary rock core sample. The collection apparatus comprises an underwater bracket, an underwater pile driver, a pile driver attachment, a snapping sleeve, a plurality of buoyancy barrels, a force dispersing sheet and a hollow sampling tube. According to the present invention, the sedimentary rock core sampling can be rapidly completed under the water without the large vessels, the machinery and the platform construction on the sea surface, the sampling position can be conveniently transferred, and the multiple samples at the multiple sites can be obtained within the limited time so as to substantially save the manpower, the material resources and the time cost; and the apparatus and themethod provide the technical support for the scientific research and engineering of island reefs.

Description

Technical field: [0001] The invention can be applied in the fields of coral reef natural science research and island reef geological engineering, and in particular relates to a device and a collection method for acquiring coral reef columnar sedimentary core samples quickly and without disturbance under one-person underwater operation. Background technique: [0002] Coral reefs are distributed in tropical seas and are seabed uplifts with anti-wave properties composed of reef-building coral skeletons and other calcareous biological debris. The surface of the coral reef is covered by a large number of living corals, which is the foundation of the coral reef ecosystem. Coral reefs are extremely valuable marine resources, supporting fisheries and tourism with huge economic benefits. my country's coral islands and reefs are the only land territory in the South China Sea, and they are irreplaceable in safeguarding the sovereignty of the South China Sea, sea routes, mineral and fi...

AI Technical Summary

Problems solved by technology

[0004] Because the main part of the coral reef is below the water surface (only part of the top of the reef flat can be exposed to the water surface at low tide), and due to the wind, ocean currents and landforms of the island reef, the hydrodynamic force near the reef is strong all year round; in addition, the shallow sedimentation of the coral reef Very loose (it will only be cemented below tens of meters), and the sedimentary particle size is extremely uneven, ranging from very fine foraminifera and other calcareous sands to coral blocks of several centimeters or even tens of centimeters; therefore, the columnar shape of coral reefs is obtained Depositing samples is very difficult

Existing technical means usually set up a platform on the sea, and put the commonly used down-the-hole drilling rigs on land on the platform, which often consumes huge manpower, material resources and time costs

Images