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Slope excavation and support fast tracking construction method

A construction method and slope technology, applied in excavation, infrastructure engineering, sheet pile wall, etc., to avoid the collapse of the slope, prevent the collapse of the floor, and not delay the construction period

Inactive Publication Date: 2018-10-02
中国葛洲坝集团建设工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of rapid follow-up of excavation and support in the construction process of high and steep slopes under the condition of ensuring quality and quantity and safety, and to provide a fast follow-up for excavation and support of slopes. With the advanced construction method, without erecting bent frames, the drilling rig can complete the anchor bolt and drainage hole drilling operations on the platform after excavation or on the blasting gravel, which can meet the rapid excavation and support of high water conservancy and hydropower slopes under the premise of safety and quality. construction needs

Method used

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  • Slope excavation and support fast tracking construction method
  • Slope excavation and support fast tracking construction method
  • Slope excavation and support fast tracking construction method

Examples

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Embodiment Construction

[0032] Take the spillway high slope excavation project of Jinzhai Pumped Storage Power Station in Anhui Province as an example:

[0033] A construction method for rapid follow-up of slope excavation support, comprising the following steps:

[0034] 1: For high slope excavation and support construction, maintain advanced awareness in technology: take the lead in familiarizing with the construction drawings and technical requirements, conduct repeated surveys and measurements on the construction site, determine the construction method of excavation and support, do a good job in wind, water and power layout, and Plan construction roads and slag yards, and make preparations for personnel and equipment.

[0035] 2: The surveying team and the surveying supervision engineer will conduct the original terrain surveying and mapping, and then release the excavation range, slope ratio, elevation and stake number according to the design excavation drawings, spray red spray paint on the hol...

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Abstract

The invention provides a slope excavation and support fast tracking construction method and relates to the technical field of high slope excavation construction. A CM351 drilling machine is used for rapidly drilling a hole as the core; the high slope fast excavation and support technology is implemented according to the principles of primary presplitting (at the height of 15 m), secondary blasting( the blasting height being 7-8 m per time), layered deslagging ( 3-4 m per layer), platform reserving, bent frame elimination, and support tracking. A bent frame is omitted. The drilling machine cancomplete pore forming operation of anchor rods and drainage holes on the excavated platform (or blasted rock ballast). The requirements for fast construction of water conservancy and hydropower highslope excavation and support are met on the premise of guaranteeing the safety quality.

Description

technical field [0001] The invention relates to a construction method for rapid follow-up of slope excavation and support, and relates to the technical field of high slope excavation construction. Background technique [0002] In the construction of water conservancy and hydropower, there are more and more excavation projects on high slopes; due to the characteristics of concentrated working faces and cross construction during the construction of different water conservancy and hydropower projects, it brings great safety risks to construction operations. Especially in the implementation of the current new safety law, under the condition of adhering to people-oriented, how to excavate and support safely, quickly and with high quality has become an important technical problem to be solved at present. Contents of the invention [0003] The purpose of the present invention is to solve the problem of rapid follow-up of excavation and support in the construction process of high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/76
CPCE02D5/76E02D17/207
Inventor 王晨彪马劲涛吴小峰刘宽燚王莹刘子青
Owner 中国葛洲坝集团建设工程有限公司
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