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A construction method for mechanical excavation of pre-drilled stonework

A construction method and pre-drilling technology, used in excavation, infrastructure engineering, construction, etc., can solve the problems of slow construction speed, low efficiency, high noise, etc., and achieve the effect of improving construction work efficiency and increasing the scope of applicable rocks.

Active Publication Date: 2018-02-02
CHONGQING CONSTR ENG MUNICIPAL TRAFFIC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main method of stonework excavation is blasting excavation, and the use of blasting to carry out stonework excavation in cities is strictly controlled due to surrounding environmental factors; Disadvantages such as high noise are gradually no longer used; in addition, static blasting construction costs are high and the construction speed is slow, static blasting is used in areas where settlement and surrounding building protection are very strict

Method used

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  • A construction method for mechanical excavation of pre-drilled stonework
  • A construction method for mechanical excavation of pre-drilled stonework
  • A construction method for mechanical excavation of pre-drilled stonework

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Effect test

Embodiment 1

[0037] Such as figure 1 , figure 2 , Figure 5 , Figure 7 As shown, a construction method for pre-drilled stonework mechanical excavation comprises the following steps:

[0038] Step 1, the construction preparation stage, including felling trees, temporary drainage, selection of slag yards, identification of underground pipelines, protection of underground pipelines, excavation of topsoil and strong weathered rocks that can be directly excavated, lithology determination, etc.;

[0039] Step 2, the excavation route planning stage, select a reasonable excavation sequence and operation route according to the difference between the rock mass bedding and inverse bedding, planning follows the first high and then low, first broken and then complete, effective use of the free surface and the direction of the rock strata ;

[0040] Step 3, the plum blossom pre-drilling stage, the down-the-hole drill is used for pre-drilling. The pre-drilling includes two types of stress holes an...

Embodiment 2

[0071] Such as image 3 , Figure 4 , Figure 6 , Figure 7 As shown, a construction method for pre-drilled stonework mechanical excavation comprises the following steps:

[0072] Step 1, the construction preparation stage, including felling trees, temporary drainage, selection of slag yards, identification of underground pipelines, protection of underground pipelines, excavation of topsoil and strong weathered rocks that can be directly excavated, lithology determination, etc.;

[0073] Step 2, the excavation route planning stage, select a reasonable excavation sequence and operation route according to the difference between the rock mass bedding and inverse bedding, planning follows the first high and then low, first broken and then complete, effective use of the free surface and the direction of the rock strata ;

[0074] Step 3, the plum blossom pre-drilling stage, the down-the-hole drill is used for pre-drilling. The pre-drilling includes two types of stress holes and...

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Abstract

The invention discloses a construction method for mechanical excavation of pre-drilled stonework, which belongs to the field of mechanical engineering and is used to solve the problems of high construction cost and slow construction speed of static blasting and solve the problem of low efficiency of stonework excavation in cities. question. It includes the construction preparation stage, the excavation route planning stage, the plum blossom pre-drilling stage, the laying guide gray line stage, and the ripper construction stage. Pre-drilling is carried out by using down-the-hole drilling. The pre-drilling includes two types of stress holes and pre-splitting holes. The stress holes are used to provide the force point for the ripper. At the same time, the pre-splitting holes are arranged in a plum blossom shape, and the pre-splitting holes are used to destroy the integrity of the rock mass. sex. It has the advantages of fast construction speed, low construction cost and low construction noise.

Description

technical field [0001] The invention belongs to the field of building construction, in particular to a construction method for mechanical excavation of pre-drilled stonework. Background technique [0002] In recent years, with the development of engineering construction in our country, earthwork works have increased sharply, of which stone works account for a certain proportion. At present, the main method of stonework excavation is blasting excavation, and the use of blasting to carry out stonework excavation in cities is strictly controlled due to surrounding environmental factors; Disadvantages such as high noise are gradually no longer used; in addition, the construction cost of static blasting is high and the construction speed is slow. Static blasting is used in areas where settlement and surrounding building protection are very strict. Therefore, choosing a suitable machine and its matching method to improve the efficiency of stone excavation in the city has become a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/00
Inventor 李丽萍阳长江翟旭茹杨翔江真张庆明李晓倩
Owner CHONGQING CONSTR ENG MUNICIPAL TRAFFIC ENG
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