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A detection method of perched layer in loess high fill

A high loess filling and loess high filling technology, applied in the field of engineering survey and detection, can solve the problems of time and economic gain outweighing the gain, and achieve the effect of low investment cost, accurate detection and simple steps

Active Publication Date: 2019-12-03
中国机械设备工程股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If a wide range of densely arranged boreholes or deep foundation pit excavation are used to understand the distribution of the aquifer, it is often time and economically ineffective.

Method used

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  • A detection method of perched layer in loess high fill
  • A detection method of perched layer in loess high fill
  • A detection method of perched layer in loess high fill

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Embodiment Construction

[0033] Such as Figure 1 to Figure 5 Shown, a kind of loess high fill aquifer detection method of the present invention comprises the following steps:

[0034] Step 1. Lay out high-density measuring lines: lay out multiple high-density measuring lines 1 on the surface of the loess high-fill area to be measured. A plurality of monitoring electrodes 2 are connected to the density measuring line 1, and the monitoring electrodes 2 are vertically inserted into the soil body. The plurality of monitoring electrodes 2 on each high-density measuring line 1 form a monitoring electrode row, and the lines where the monitoring electrode rows are located are parallel to each other. ;

[0035] In this embodiment, the distance between two adjacent monitoring electrodes 2 on the high-density measuring line 1 is not greater than 5m.

[0036] In this embodiment, the angles and depths at which the multiple monitoring electrodes 2 are inserted into the soil are consistent, and the depth of the m...

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Abstract

The present invention discloses a loess highfill aquitard detection method. The method comprises the steps of: the step 1: arranging a high-density measuring wires; the step 2: obtaining specific resistance data; the step 3: obtaining a specific resistance profile map; the step 4: obtaining the quantity and the distribution of an undetermined layer of the aquitard on the area section to be detected of the loess highfill; the step 5: constructing a loess highfill three-dimensional view; and the step 6: performing measurement of the aquitard. The loess highfill aquitard detection method employsthe high-density electrical method to detect the loess highfill area to obtain the quantity and the distribution of the undetermined layer of the aquitard on the area section to be detected of the loess highfill and achieve the rough detection of the aquitard of the loess highfill area, and employs a geological drill to perform sampling and measure the moisture content of the undetermined layer ofthe aquitard so as to achieve the accurate detection of the aquitard of the loess highfill area, reduce the input cost and perform full coverage and greatly improve the working efficiency.

Description

technical field [0001] The invention belongs to the technical field of engineering survey and detection, and in particular relates to a method for detecting aquitards of loess high fill. Background technique [0002] In recent years, with the rapid development of the western region of my country, the shortage of urban land has become an urgent problem to be solved in the western region. In order to alleviate the increasingly tense problem of urban construction land, a large number of loess dug mountains to fill gullies and flat mountains to make land High fill engineering, this type of project has a wide area, large terrain fluctuations, changeable landform types, complex geological structures, and there are many unfavorable geological bodies such as cracks, subsidence and landslides, and one of the important causes of such unfavorable geological bodies One is the existence of perched water layer in the fill body. The aquitard refers to the temporarily saturated soil water la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08G01V3/38
CPCG01V3/088G01V3/38Y02A90/30
Inventor 曹杰刘智郑建国张继文刘争宏唐国艺于永堂杜伟飞陈冉升张龙王云南田燚
Owner 中国机械设备工程股份有限公司
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