Waist line measuring method for underground roadway

A measuring method and technology for underground tunnels, applied in the field of mines, can solve the problems of time-consuming, labor-intensive, low precision, etc., and achieve the effects of simple method, reduction of cutting square quantity, and improvement of tunneling construction efficiency and tunneling construction quality.

Pending Publication Date: 2021-12-31
SHENMU HUISEN LIANGSHUIJING MINING
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Problems solved by technology

[0002] At the present stage, the machine head chamber is usually excavated by the method of tunneling the whole section at one time. Due to the undulation of the coal (rock) layer in the roadway, the machine head chamber needs to be excavated according to the gentle slope of the waistline during the excavation construction process. The roadway extends forward horizontally. This method is not only time-consuming and labor-intensive, but also has low precision. How to quickly and accurately provide the accuracy of the tunneling of the machine head chamber and the accuracy of foundation construction is an urgent technical problem to be solved in this field.

Method used

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  • Waist line measuring method for underground roadway

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Embodiment

[0020] This embodiment relates to a method for measuring the waistline of an underground roadway, comprising the following steps: see figure 1 Shown:

[0021] Step 1, two points A and B in the roadway are known, and a horizontal line is given by an explosion-proof laser ray meter. The projection points of the two points A and B on the horizontal line are C and D respectively, and the height difference between the line segment AC and the line segment BD , get the elevation difference △H between A and B;

[0022] Step 2. Measure the distance S between points C and D C-D , to calculate the slope between two points A and B, the slope calculation formula is as follows:

[0023] Step 3: Measure the elevation difference △H between points A and B and the distance S between points C and D according to the obtained slope C-D , the elevation of any point between A and B in the roadway can be calculated.

[0024] According to the height difference ΔH and the slope between the two po...

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Abstract

The invention provides a waist line measuring method for an underground roadway. The method comprises the following steps: step 1, obtaining an elevation difference deltaH between two points A and B; step 2, calculating the gradient between the point A and the point B; and step 3, according to the obtained gradient, measuring the elevation difference deltaH between the two points A and B and the distance SC-D between the two points C and D so as to calculate the elevations of the two points A and B in the roadway. By means of the method, the roadway tunneling and foundation construction waist line can be rapidly and accurately extended, the cutting amount of machine head chamber large-section roadway tunneling construction is reduced, labor input during tunneling is reduced, and tunneling construction efficiency and tunneling construction quality are improved.

Description

technical field [0001] The invention belongs to the technical field of mines; in particular, it relates to a method for measuring the waistline of an underground roadway. Background technique [0002] At the present stage, the machine head chamber is usually excavated by the method of tunneling the whole section at one time. Due to the undulation of the coal (rock) layer in the roadway, the machine head chamber needs to be excavated according to the gentle slope of the waistline during the excavation construction process. The roadway extends forward horizontally. This method is not only time-consuming and labor-intensive, but also has low precision. How to quickly and accurately provide the accuracy of the tunneling of the nose chamber and the foundation construction is an urgent technical problem to be solved in this field. Contents of the invention [0003] The object of the present invention is to provide a method for measuring the waistline of an underground roadway. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
CPCG01C15/004
Inventor 巨二亮郑育春但双亮
Owner SHENMU HUISEN LIANGSHUIJING MINING
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