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CN-122016410-A - Layered sampling tube for sampling river sediment and use method thereof

CN122016410ACN 122016410 ACN122016410 ACN 122016410ACN-122016410-A

Abstract

The application relates to a layered sampling tube for sampling river sediment and a use method thereof. The application is suitable for the technical field of river sediment sampling. The technical scheme includes that the sampling tube is of a semi-cylindrical structure, a drilling mud base is arranged at any end of the sampling tube, a drilling mud opening is formed in the drilling mud base, a plurality of sampling observation openings are formed in the inner side wall of the sampling tube in a penetrating mode, a protecting piece for covering the sampling observation openings is detachably arranged on the outer side wall of the sampling tube, the semi-tube is of a semi-cylindrical structure and is detachably arranged on the drilling mud base, the semi-tube and the sampling tube are matched and enclosed to form a cylindrical tube body, an adjusting assembly is sleeved at the end portion, far away from the drilling mud base, of the cylindrical tube body and used for locking the semi-tube and the sampling tube, a non-return assembly is arranged in the drilling mud opening of the drilling mud base and can open the drilling mud opening when drilling mud is inserted into the cylindrical tube body in a penetrating mode, and can close the drilling mud opening when the drilling mud opening is lifted up, so that the mud in the tube is prevented from flowing backwards, and the sampling assembly is matched with the sampling observation openings in a plugging mode.

Inventors

  • PAN XIAOWEN
  • PU WEIWEI
  • HUANG LI
  • GE ZHAOYI

Assignees

  • 中国电建集团华东勘测设计研究院有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (9)

  1. 1. The utility model provides a river course bed mud sampling is with layering sampling tube which characterized in that includes: The sampling tube (100) is of a semi-cylindrical structure, a drilling mud base (900) is arranged at any end of the sampling tube, a drilling mud opening is formed in the drilling mud base (900), a plurality of sampling observation openings (130) are formed in a penetrating mode on the inner side wall of the sampling tube (100), and a protective piece for covering the sampling observation openings (130) is detachably arranged on the outer side wall of the sampling tube (100); the half pipe (200) is in a semi-cylindrical structure and is detachably arranged on the drilling mud base (900), and the half pipe (200) and the sampling tube (100) are matched to form a cylindrical barrel; the adjusting component (500) is sleeved at the end part of the cylindrical barrel body far away from the drilling mud base (900) and is used for locking the half pipe (200) and the sampling tube (100); the non-return assembly (600) is arranged in a drilling mud port of the drilling mud base (900), can open the drilling mud port when drilling mud is inserted downwards to enable a mud sample to enter the cylindrical barrel, and can close the drilling mud port when the drilling mud is lifted upwards to prevent the mud sample in the pipe from flowing backwards; the sampling assembly is in plug-in connection with the sampling observation port (130) and can be inserted into the sampling observation port (130) corresponding to the layering so as to take out mud samples of corresponding layers in the cylindrical barrel.
  2. 2. The layered sampling tube for river sediment sampling according to claim 1, wherein the non-return assembly (600) comprises a mounting frame (610) and a non-return plate (620), the mounting frame (610) is embedded at a drilling mud port of the drilling mud base (900), a guide port (611) is penetrated and arranged in the mounting frame (610), an adjusting port (612) with an opening area larger than that of the guide port (611) is arranged on a wall surface of the mounting frame (610) facing the inside of the sampling tube (100), a pair of non-return plates (620) rotating in opposite directions are rotatably arranged in the adjusting port (612), and the non-return plates (620) are inclined and are abutted at the end parts.
  3. 3. The layered sampling tube for river sediment sampling according to claim 2, wherein the rotation angle of the pair of non-return plates (620) in the adjustment opening (612) is less than 60 DEG, and the included angle formed between the pair of non-return plates (620) is more than 30 deg.
  4. 4. The layered sampling tube for river sediment sampling according to claim 1, wherein the protection piece comprises an arc-shaped flitch frame (300), the arc-shaped flitch frame (300) is detachably mounted on the side wall of the sampling tube (100), a plurality of transparent observation windows (400) which are in one-to-one correspondence with the sampling observation holes (130) are formed in the side wall of the arc-shaped flitch frame (300), and the adjusting assembly (500) is sleeved on the outer walls of the ends of the sampling tube (100), the half tube (200) and the arc-shaped flitch frame (300) so as to fix the sampling tube (100), the half tube (200) and the arc-shaped flitch frame (300).
  5. 5. The layered sampling tube for river bottom mud sampling according to claim 4, wherein the drilling mud base (900) is provided with a socket (110) and a slot (120), two sides of the sampling tube (100) are symmetrically provided with a group of circular arc inserting cavities (150), two sides of the half tube (200) are respectively provided with a circular arc inserting plate (700), two sides of the circular arc attaching plate frame (300) are respectively provided with a circular arc inserting plate (700), the bottom of the half tube (200) is inserted into the socket (110) of the drilling mud base (900), the circular arc inserting plates (700) at two sides of the half tube (200) are inserted into the circular arc inserting cavities (150) at one side of the sampling tube (100), the bottom of the circular arc attaching plate frame (300) is inserted into the slot (120) of the drilling mud base (900), and the circular arc inserting plates (700) of the circular arc attaching plate frame (300) are inserted into the circular arc inserting cavities (150) at the other side of the sampling tube (100).
  6. 6. The layered sampling tube for river bottom mud sampling of claim 5, wherein the adjusting assembly (500) comprises a plug bush (510), a disc-shaped adjusting handle (540) and a locking piece, the sampling tube (100), the half tube (200) and the circular arc-shaped flitch frame (300) are in enclosing fit to form a cylindrical tube body, the plug bush (510) is sleeved at the end part of the cylindrical tube body far away from the drilling mud base (900), the disc-shaped adjusting handle (540) in an inverted cone shape is connected to the top of the plug bush (510), the locking piece penetrating through the sampling tube (100), the half tube (200) and the circular arc-shaped flitch frame (300) is arranged in the plug bush (510), and the locking piece is used for compacting and fixing the sampling tube (100), the half tube (200) and the circular arc-shaped flitch frame (300).
  7. 7. The layered sampling tube for river bottom mud sampling according to claim 6, wherein the locking piece comprises a polished rod bolt (520) and an adjusting pulling piece (530), a first jack (140) is arranged on the side wall of the end portion of the sampling tube (100) far away from the drilling mud base (900), a second jack (310) corresponding to the first jack (140) is arranged on the side wall of the circular arc-shaped flitch frame (300), a third jack (511) is arranged on the side wall of the plug bush (510), a threaded groove (210) is arranged at the end portion of the half tube (200), the adjusting pulling piece (530) is connected to the end portion of the polished rod bolt (520), external threads which can be in threaded fit with the threaded groove (210) are formed on the outer wall of the polished rod bolt (520), and the polished rod bolt (520) penetrates through the third jack (511), the second jack (310), the first jack (140) and the threaded groove (210) so as to fix the sampling tube (100), the half tube (200), the circular arc-shaped flitch frame (300) and the plug bush (510).
  8. 8. The layered sampling tube for river sediment sampling according to claim 1, wherein the sampling assembly comprises a separation sampler (800), the separation sampler (800) comprises a handle (802) and a sampling frame (801), the outer wall of the end part of the sampling frame (801) is connected with the handle (802), a sampling cavity is arranged in the sampling frame (801), the sampling frame (801) is matched with the sampling observation port (130), and the inner wall of the half tube (200) corresponding to the sampling observation port (130) is in a plane shape so as to be matched with the end part of the sampling frame (801).
  9. 9. The application method of the layered sampling tube for river sediment sampling is characterized by being applied to the layered sampling tube for river sediment sampling according to any one of claims 1-8, and comprises the following steps: S1, assembling, namely mounting a half pipe (200) and a protective piece on a drilling mud base (900) of a sampling tube (100) to enable the half pipe (200), the sampling tube (100) and the protective piece to be matched to form a cylindrical barrel, mounting an adjusting component (500) at the end part of the cylindrical barrel, and locking the half pipe (200) and the sampling tube (100) by the adjusting component (500) so as to complete the assembly of the layered sampling tube; S2, using, adjusting the position of the layered sampling tube through the adjusting component (500), enabling a drilling mud port of the drilling mud base (900) to correspond to a preset drilling mud position, then vertically inserting the assembled layered sampling tube into a river mud layer at a corresponding position, enabling the mud sample extruded into the sampling tube (100) to enter a space formed by the sampling tube (100) and the half tube (200) together through the non-return component (600), and then lifting the adjusting component (500) to take out the whole layered sampling tube; s3, performing layered sampling, namely disassembling an adjusting component (500) in the layered sampling tube, and horizontally inserting the sampling component into a sampling observation port (130) of the sampling tube (100) to slit the mud sample at the corresponding position.

Description

Layered sampling tube for sampling river sediment and use method thereof Technical Field The invention relates to the technical field of river sediment sampling, in particular to a layered sampling tube for river sediment sampling and a use method thereof. Background The layered sampling tube for sampling the river sediment refers to equipment for collecting a columnar sediment sample and obtaining a layered sample according to depth, is usually a single-cavity tube body, and is used for carrying out manual or mechanical layering after obtaining a complete columnar sample by penetrating sediment, so as to preserve the original structure and physical and chemical characteristics of each layer of sediment and provide basis for environmental assessment and engineering treatment. At present, in the processes of pulling out, carrying and later sample treatment after sampling, mud layers with different depths in the tube are mixed due to the flowability and external vibration of the sample, and the interlayer mixing problem directly damages the hierarchical structure and the original representativeness of the sample. Disclosure of Invention The invention aims to solve the technical problems and provides a layered sampling tube for river sediment sampling and a use method thereof. The technical scheme adopted by the invention is that the layered sampling tube for sampling river sediment comprises the following components: the sampling tube is of a semi-cylindrical structure, a drilling mud base is arranged at any end of the sampling tube, a drilling mud opening is formed in the drilling mud base, a plurality of sampling observation openings are formed in the inner side wall of the sampling tube in a penetrating mode, and a protective piece covering the sampling observation openings is detachably arranged on the outer side wall of the sampling tube; The half pipe is in a semi-cylindrical structure and can be detachably arranged on the drilling mud base, and the half pipe and the sampling tube are matched to form a cylindrical barrel; the adjusting component is sleeved at the end part of the cylindrical barrel body far away from the drilling mud base and is used for locking the half pipe and the sampling tube; the non-return assembly is arranged in the drilling mud port of the drilling mud base, can open the drilling mud port when the drilling mud is inserted downwards to enable the mud sample to enter the cylindrical barrel, and can close the drilling mud port when the drilling mud is lifted upwards to prevent the mud sample in the pipe from flowing backwards; the sampling assembly is in plugging fit with the sampling observation port and can be inserted into the sampling observation port corresponding to the layering so as to take out the mud sample of the corresponding level in the cylindrical barrel. Through above-mentioned technical means, form cylindrical barrel through the cooperation of semicanal and sampling tube, utilize adjusting part locking semicanal and sampling tube to form high rigidity whole cylinder structure, ensure that layering sampling tube is inserted into the sediment in-process and is kept the structure firm and seal with the inner wall, reduce the initial disturbance of sampling because of structural deformation or gap lead to. Through setting up the end port that ends contrary subassembly at the sampling tube and form the contrary structure that ends, it can guarantee when layering sampling tube is impressed river course bed mud inside that mud appearance gets into cylindrical barrel inside to cut off the brill mud mouth when lifting, prevent that mud appearance from flowing out from the bottom, maintained mud appearance in the ascending integrality of vertical direction. Meanwhile, the sampling assembly and the sampling observation port on the sampling tube are utilized to facilitate taking out the mud sample at the specific layer inside the cylindrical barrel. In some embodiments, the non-return subassembly includes installing frame and non-return board, the drilling mud mouth department of drilling mud base inlays and is equipped with the installing frame, and the inside of installing frame runs through and is equipped with the guide mouth, and the installing frame is towards be equipped with the opening area on the inside wall of sampling tube and be greater than the regulation mouth of guide mouth, the rotation of regulation mouth is installed a pair of non-return board of pivoted in opposite directions, a pair of non-return board is slope form and tip looks butt. In some embodiments, the rotation angle of the pair of non-return plates in the adjustment port is less than 60 °, and the included angle formed between the pair of non-return plates is greater than 30 °. In some embodiments, the protection piece comprises a circular arc-shaped flitch frame, the circular arc-shaped flitch frame is detachably arranged on the side wall of the sampling tube, a plurality of transparent observati