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Surrounding rock grading system and grading method suitable for cantilever heading machine construction

A cantilever roadheader and surrounding rock grading technology, applied in data processing applications, instruments, calculations, etc., can solve the problems affecting the construction efficiency of the cantilever roadheader, no grading method, no surrounding rock grading system, etc., to save tunnel excavation. cost, improving driving efficiency, and clearly dividing the effect

Pending Publication Date: 2022-06-07
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, there is no surrounding rock classification system suitable for the construction of the cantilever roadheader, and there is no corresponding classification method for the adaptability and excavability classification of the surrounding rock during the construction of the cantilever roadheader. , has seriously affected the construction efficiency of the cantilever roadheader, so it is urgent to design a surrounding rock classification method suitable for cantilever roadheader construction to classify the surrounding rock

Method used

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  • Surrounding rock grading system and grading method suitable for cantilever heading machine construction
  • Surrounding rock grading system and grading method suitable for cantilever heading machine construction
  • Surrounding rock grading system and grading method suitable for cantilever heading machine construction

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Effect test

Embodiment 1

[0045] Example 1: refer to the attached Figure 1-2 A method of grading surrounding rock suitable for cantilever roadheader construction is shown, including

[0046]Step S1. Carry out a preliminary survey on the surrounding rock formation of the tunnel, and according to the preliminary geological survey results, carry out the classification of the stratum influencing factors of the cantilever roadheader

[0047] Specifically, comprehensively consider the geological factors affecting the construction of the cantilever roadheader described in the "Standards for Engineering Rock Mass Grading" GB / T50218-2014, and select the hardness of the rock, the integrity of the rock mass, the state of groundwater, the initial in-situ stress, and the structural plane. The angle between the axis of the tunnel and the tunnel axis is introduced into score classification to analyze the influence of this factor on the utilization rate

[0048] Step S101. Use the uniaxial compressive strength of th...

Embodiment 2

[0092] Example 2: The scheme of the present invention has been successfully applied to the actual construction of Guiyang Metro Line 1. The north extension section of Guiyang Rail Transit Line 1 is YDK22+169.76~YDK22+731.27 and the Huosha section YKD26+309.03~YDK26+728.69 as example:

[0093] The proposed tunnel site area is a soluble rock distribution area, with relatively developed karst landforms, belonging to a moderately developed area of ​​karst; the hydrogeological conditions of the project area are complex, and the water bearing of the stratum in different sections is very different, especially the groundwater in the karst area is affected by structural joints, fissures, rock formations, etc. The control of karst caves (gap) and pipelines is characterized by uneven distribution and poor regularity. Especially in the developed karst caves, the karst pipelines are rich in water. The data collected on site are as follows:

[0094] Table 9: Engineering Geological Data

[00...

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Abstract

The invention discloses a surrounding rock grading system and method suitable for construction of a cantilever tunneling machine. The method comprises the steps that S1, according to a preliminary geological exploration result, stratum influence factor indexes of the cantilever tunneling machine are graded; s2, summing the scores of the indexes by adopting a sum-difference method to obtain a total adaptability score, and performing stratigraphic adaptability grading of the cantilever tunneling machine; s3, a surrounding rock drilling and digging index RPI is introduced, and tunneling performance grading of cantilever digging construction is carried out; s4, comprehensively grading the surrounding rock stratum geology by combining adaptive grading and tunnability grading; according to the method, key factors influencing construction of the cantilever tunneling machine are considered, adaptability grading and diggability grading of the cantilever tunneling machine construction surrounding rock are established, a cantilever tunneling machine construction surrounding rock grading system based on the tunneling performance is established, the tunnel excavation cost can be saved, and the construction efficiency of the cantilever tunneling machine is improved; the method has the characteristics of effectively saving the tunnel excavation cost and improving the tunneling efficiency of the cantilever tunneling machine.

Description

technical field [0001] The invention relates to the technical field of underground engineering rock mass classification, in particular to a surrounding rock classification system and classification method suitable for the construction of a cantilever roadheader. Background technique [0002] In recent years, with the acceleration of urbanization in my country, in order to solve the problem of urban public transportation, subway projects have developed vigorously; in the construction of subway projects in mountainous towns, stations and section tunnels inevitably approach or pass through densely populated downtown areas, blasting The accident rate of excavation engineering is high, and the shield method and TBM are also difficult to apply in poor geology, so the cantilever roadheader technology came into being. The classification of surrounding rock and the determination of its mechanical parameters are the basis for the design and construction of underground space engineering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/10
CPCG06Q10/06311G06Q10/06393G06Q10/10
Inventor 宋战平赵祎睿王祥陈发达冉军刘凯朱小辉范育辉张策万泽军张玉伟刘乃飞田小旭苏婉莹
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY