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Underground curved roadway tunneling construction method

A construction method and roadway technology, which are applied in tunnels, earthwork drilling, image data processing, etc., can solve the problems of roadway over- and under-excavation, construction quality problems, low cycle footage, etc., to ensure construction quality, reduce excavation deviation, The effect of mining deviation reduction

Active Publication Date: 2019-08-23
贵州开磷有限责任公司
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Problems solved by technology

[0002] In excavation engineering excavation, the construction of curved roadway is extremely difficult, the circular footage is not high, and the angle of blast hole is not well controlled, which is easy to cause local over- and under-excavation of the roadway, which greatly affects the curvature and appearance of the mined curved roadway. Moreover, it is not easy to control the excavation direction of the curved roadway, which may easily cause construction quality problems

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  • Underground curved roadway tunneling construction method
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Embodiment Construction

[0024] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0025] Such as figure 1 , figure 2 As shown, the invention provides a kind of underground curved roadway excavation construction method comprising the following steps:

[0026] Step 1: Use a computer installed with corresponding drawing software to draw a top view of the curved roadway to be excavated according to an appropriate scale. The top view of the curved roadway is composed of two parallel curve inner contour lines 1 and curve outer contour lines 2, and then draw A curve center chord line 3 that is equal to the positions of the curve inner contour line 1 and the curve outer contour line 2 is obtained; the preferred scale is 1:100. The preferred drawing software is AutoCAD.

[0027] Step 2: Measure and obtain the length of the center chord in step 1 and the angle of the center of the circle corresponding to the center ch...

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Abstract

The invention provides an underground curved roadway tunneling construction method. The method comprises the steps of utilizing computer mapping software to draw a curved roadway vertical view, measuring the center chord length and the circle center angle corresponding to the center chord, mapping out the number of construction tunneling steps, calculating and obtaining the tunneling step length,the tunneling step angle and the tunneling width, and excavating and obtaining a curved roadway according to the geometric parameters of the construction tunneling steps. By the adoption of the technical scheme, the computer mapping software is utilized as a tool, constructors can intuitively learn the situation preliminarily before excavation, then the curved roadway vertical view is divided intoa plurality of construction tunneling steps, a computer is utilized for directly calculating and obtaining the tunneling width, the tunneling length and the tunneling step angle needing to be excavated in each construction tunneling step, the constructors carry out accurate construction, the construction quality is ensured, and the excavation deviation between the curved roadway formed after construction and a curved roadway in the original design paper is reduced.

Description

technical field [0001] The invention relates to the technical field of mining engineering, in particular to an underground curved roadway excavation construction method. Background technique [0002] In excavation engineering excavation, the construction of curved roadway is extremely difficult, the circular footage is not high, and the angle of blast hole is not well controlled, which is easy to cause local over- and under-excavation of the roadway, which greatly affects the curvature and appearance of the mined curved roadway. Moreover, it is not easy to control the excavation direction of the curved roadway, which may easily cause construction quality problems. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides an underground curved roadway excavation construction method. [0004] The present invention is achieved through the following technical solutions. [0005] The invention provides an under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/14G06T11/20
CPCE21D9/00E21D9/14G06T11/203
Inventor 黄仁雄李忠金宇松宋远兵张链福姚猛吴育麟夏云陈红玉田茂林申伟陈鹏柏明忠秦文赖凡
Owner 贵州开磷有限责任公司
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