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A Construction Method for Drilling Boulders

A construction method and technology of boulders, which are used in earth-moving drilling, mining equipment, tunnels, etc. to ensure normal operation, avoid working frequency, and reduce tool damage.

Active Publication Date: 2021-11-23
CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a construction method for drilling boulders to solve the problem that the common construction methods for boulders in the prior art are not suitable for drilling boulders near the existing operation line, so that boulders can be drilled The process does not affect the normal operation of existing operation lines

Method used

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  • A Construction Method for Drilling Boulders
  • A Construction Method for Drilling Boulders
  • A Construction Method for Drilling Boulders

Examples

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Embodiment 1

[0033] During the construction of the new subway tunnel line, the shield machine encounters a group of boulders when it excavates to 1m outside the outline of the existing subway line. If the shield machine wants to continue to excavate, it needs to take out the boulders. This embodiment proposes a construction method for drilling boulders, such as figure 1 , including the following steps:

[0034] A. Arrange automatic monitoring points in the existing operation line to monitor the settlement of the existing operation line during the construction process; it is beneficial to control the deformation of the tunnel structure of the existing operation line within a safe range. In the monitored mileage of the left and right lines of the existing operation line, a total of 28 monitoring sections are arranged, each section has 6 measuring points, a total of 168 measuring points. Among them, on the left line monitoring mileage range: a monitoring section is arranged every 10m, a tota...

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Abstract

The invention relates to the field of urban rail transit, in particular to a construction method for drilling boulders. Automatic monitoring points are arranged in advance in existing operating lines to monitor the settlement of existing operating lines during construction; The deformation of the tunnel structure of the operation line is controlled within a safe range; construction obstacles within the construction range are eliminated to facilitate smooth construction; then further investigation of the boulder situation is carried out, and geological drilling is used to find out the parameters such as the boulder range, size, buried depth and strength , to provide the construction scope and parameter basis for the next step of rotary excavation pile construction; after the preparatory work is completed, use the rotary drilling rig to form the hole and take out the boulder. This construction method has little impact on the surrounding environment, and the construction process will not affect the normal operation of the existing operation lines.

Description

technical field [0001] The invention relates to the field of urban rail transit, in particular to a construction method for drilling boulders. Background technique [0002] During the construction of a new subway line, if the shield machine encounters a group of boulders when excavating beyond the outline of a certain subway line in operation, if the shield machine wants to continue excavating, it needs to take out the boulders. At present, the common methods for dealing with boulders include entering the warehouse blasting method, ground drilling and blasting method, entering the warehouse splitting method, etc. [0003] Among them, both the entering blasting method and the ground drilling and blasting method need to drill blast holes for the boulders first and then place explosives for blasting until the size of the boulder fragments after blasting meets the requirements for tunneling and slag discharge of the shield machine. The method is that the construction personnel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/08
CPCE21D9/0607E21D9/08
Inventor 陈卓蔡发洪陈强杨晓亮
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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