Simple monitoring device for earth surface cracks

A surface crack and monitoring device technology, applied in the field of surface crack monitoring, can solve the problems of inaccurate measurement data, difficulty in ensuring accuracy, waste of resources, etc., and achieve the effects of expanding the scope of application, ensuring accuracy, and increasing stability

Inactive Publication Date: 2015-09-09
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the monitoring device widely used in group measurement and group defense is a simple monitoring pile with a gap-riding type. This simple monitoring pile is mostly made of cement and measured with a tape measure. It has the characteristics of fast investment and low cost, but its accuracy is difficult to guarantee, and the measurement data is inaccurate. And there

Method used

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  • Simple monitoring device for earth surface cracks
  • Simple monitoring device for earth surface cracks
  • Simple monitoring device for earth surface cracks

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] See figure 1 with image 3 , A simple monitoring device for surface cracks, including a convergence meter 1, a geological compass 7, and two 1.5m-long hollow stainless steel pipes 3. The two stainless steel pipes 3 are located on both sides of the surface crack 2, and the two stainless steel pipes 3 are connected. The line is perpendicular to the direction of the surface crack 2; the hooks at both ends of the convergence meter 1 are hooked to the tops of the two stainless steel tubes 3; the geological compass 7 is located between the two stainless steel tubes 3, close to the steel ruler of the convergence meter 1 to measure the stainless steel tube 3 The azimuth of the connection;

[0025] The tail end of the stainless steel pipe 3 is provided with a chamfered surface for easy insertion into the soil, the stainless steel pipe 3 is 1 m away from the edge of the ground crack 2 on the same side, and the top end of the stainless steel pipe 3 is 0.5 m away from...

Example Embodiment

[0034] Example 2

[0035] See Figure 4-Figure 5 The difference from Embodiment 1 is that the stainless steel pipe 3 is 1.5 m away from the edge of the surface crack 2 on the same side, and the top end of the stainless steel pipe 3 is 0.7 m away from the ground surface.

[0036] In the soil that is difficult to hammer into the stainless steel pipe 3, you can first excavate a pit and then hammer the stainless steel pipe 3 into the soil, and then pour concrete in the pit to form a concrete layer 4 (concrete pier ) In order to fix the stainless steel pipe 3 and avoid the shaking of the stainless steel pipe 3.

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Abstract

The invention discloses a simple monitoring device for earth surface cracks. The device includes a convergence instrument, a geological compass and two fixed rods, the two fixed rods are located at two sides of an earth surface crack, and a connecting line of the two fixed rods is vertical to an earth surface crack trend; hooks on two ends of the convergence instrument are hung on the tops of the two fixed rods, and the geological compass is close to a steel ruler of the convergence instrument too measure an azimuth angle of the connecting line of the fixed rods; the fixed rods adopt hollow stainless steel tubes, reflective paints are painted on surfaces of upper parts of the stainless steel tubes, and tail ends of the stainless steel tubes are diagonal planes convenient to insert in soil mass; the stainless steel tube and an edge of the earth surface crack of the same side have an interval of at least 1m; the tops of the stainless steel tubes are 0.3 to 0.7m from an earth surface; and the hook of one end of the convergence instrument is extended through a connecting rod. The simple monitoring device for earth surface cracks only needs to firmly hammer the stainless steel tubes into the soil mass, and thus construction is very simple; and the device can be used repeatedly, thereby reducing monitoring cost.

Description

technical field [0001] The invention belongs to the field of surface crack monitoring, in particular to a simple monitoring device for surface cracks. Background technique [0002] Landslide refers to the soil or rock mass on the slope, affected by factors such as river scouring, groundwater activity, earthquake and artificial slope cutting, under the action of gravity, along a certain weak surface or weak zone, the whole or scattered ground A geological phenomenon that slides downhill. Landslide disasters occur frequently in my country. According to statistics from the Ministry of Land and Resources of the People's Republic of China, there were 8,128 landslides in 2014, accounting for 74.5% of geological disasters, causing a large number of casualties and property losses. Due to the large number of landslide hazards and their extreme dispersion, it is impossible to control them all, nor can they all be monitored with professional monitoring equipment. Therefore, it is nece...

Claims

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Application Information

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IPC IPC(8): G01V9/00G01B21/32
Inventor 刘毅殷坤龙李喜
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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