Cement soil in-situ sampling device and sampling method using the same

A sampling device and cement-soil technology, which is applied in the field of construction machinery, can solve the problems of not being able to truly reflect cement-soil parameters, high cost, and heavy workload, and achieve the effects of easy implementation, simple process, and simple structure

Active Publication Date: 2015-10-21
SHANGHAI MECHANIZED CONSTR GRP
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Problems solved by technology

[0004] However, the cost of core sampling by drilling is high and the workload is heavy; a...

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  • Cement soil in-situ sampling device and sampling method using the same
  • Cement soil in-situ sampling device and sampling method using the same
  • Cement soil in-situ sampling device and sampling method using the same

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Embodiment Construction

[0044] The following is attached Figure 1-9 A cement soil in-situ sampling device and its sampling method proposed by the present invention will be further described in detail. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0045] refer to figure 1 , The cement-soil in-situ sampling device of this embodiment includes a sampling container 10 and a sampling structure 20 . When the cement-soil in-situ sampling device is used, both the sampling container 10 and the sampling structure 20 are fixedly installed on the cutting device of the underground construction equipment, and the sampling structure 20 is arranged above the sampling container 10 .

[0046] In this embodiment, the underground construction equipment is TRD equipment or a double-wheel milling machine. When the underground construction equipment...

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Abstract

The present invention provides a cement soil in-situ sampling device and a sampling method using the same. The cement soil in-situ sampling device includes a sampling container and a sampling structure, which are fixedly installed on a cutting device of the underground construction equipment. when the cutting device moves downwards in the formation, a pressure plate of the sampling structure abuts against an upper limit plate of the sampling structure by the upward pressure of the cement soil, and at least one group of links of the sampling structure press a cover plate of the sampling container, such that the cover plate is always in the closed state before the cutting device moves downwards to a predetermined depth, thereby avoiding mixing of the cement soil in the non-detection depth into the sampling container. When the cutting device moves upwards in the formation, the pressure plate is driven by the downward pressure of cement soil to rotate downwards and drive at least one group of links to move, so as to automatically open the cover plate; and the soil cement in the detection depth enters and fills the sampling container to complete the cement soil sampling, thereby improving the detection accuracy of the cement soil parameters.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a cement soil in-situ sampling device and a sampling method for underground construction. Background technique [0002] The continuous wall construction method under equal thickness cement soil (TRD construction method, Trench cutting Re-mixing Deep wall method), developed by Japan in the early 1990s, is a complete set of equipment and construction that can continuously form walls in various soil layers and sand and gravel layers. method. The basic principle of the TRD construction method is to use a chainsaw-type cutting box to insert vertically into the ground, and then move horizontally and laterally. At the same time, the chain drives the cutter to make a rotary motion up and down, mix the original soil and pour cement slurry to form a wall with a certain thickness. To replace the currently commonly used high-pressure jet grouting, columnar underground diaphragm walls c...

Claims

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Application Information

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IPC IPC(8): G01N1/04
Inventor 徐军彪周铮崔新军金毅李操王虓周蓉峰
Owner SHANGHAI MECHANIZED CONSTR GRP
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