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SAFETY IN GROUNDWORKS AND EXCAVATION

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fulinsg 发表于 2010-1-1 18:03:03 | 显示全部楼层 |阅读模式
SAFETY IN GROUNDWORKS AND EXCAVATIONS
Safety_in_Groundworks_and_Excavations_-_Your_Practical_Guide.pdf (253.66 KB, 下载次数: 82)

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 楼主| fulinsg 发表于 2010-1-1 18:04:17 | 显示全部楼层
SAFETY IN GROUNDWORKS AND EXCAVATION

Contents
• Introduction 4
• Definition of an Excavation 5
• Risk Assessments and Method Statements 5
• Risk Assessment 6
• Management of the Work 8
• Excavation Inspections and Reports 8
• Contents of a Report 9
• Ground Conditions 10
• Methods of Ground Support 13
• Other Types of Excavations and Supports 16
• Battering or Stepping 17
• Stability of Adjacent Structures and Services 18
• Underpinning Works 19
• Overhead Power Lines 20
• Falls into Excavations 21
• Access and Egress form Excavations 22
• Use of Construction Plant 23
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 楼主| fulinsg 发表于 2010-1-1 18:04:46 | 显示全部楼层
Introduction
This guidance document has been prepared to assist those
companies and individuals that have responsibilities under the
various legal statutes affecting the health and safety of employees
at work. The guidance deals with the main hazards arising from
excavations and groundwork’s and provides risk management
advice on topics such as risk assessments, excavation inspections,
ground conditions, and methods of supporting excavations.
Between 1997 and 2002 there were 37 fatalities directly caused by the ground
collapsing during excavation works. This was due to either the lack of support of
the sides of excavations or an unsafe system of work. In almost all the fatal
accidents, death was caused by asphyxiation due to the weight of the soil
collapse: one cubic metre of soil weighs approximately one tonne.
It is therefore essential that the hazards and risks of groundwork’s and excavations
are recognised, and that safe systems of work are in place to eliminate and
reduce accidents.
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 楼主| fulinsg 发表于 2010-1-1 18:05:43 | 显示全部楼层
Risk Assessments and Method Statements
Before any excavation work is undertaken, a risk assessment must first be carried
out to assess the degree of hazard. The results of the risk assessment will dictate
the contents of the method statement; the method statement should then mirror
the complexity of the excavation works to be undertaken.
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 楼主| fulinsg 发表于 2010-1-1 18:06:31 | 显示全部楼层
Risk Assessment
The purpose of the risk assessment is to make an objective
assessment of the hazards that will be involved in the excavation,
and then to reduce or eliminate the risks.
When assessing the risks, it is useful to begin by considering the nature of the
excavation itself:
• The previous use of the site.
The nature of the ground and any groundwater conditions, including:
• The type of soils conditions and its characteristics
• The groundwater level and soil permeability
• The depth of the excavation.
The nature of the work to be undertaken:
• Whether the excavated material can be re-used and, if not, disposal methods
• The type of excavation support system
• Whether there will be any temporary support (false work) and, if practicable,
permanent support.
The location of the work, and any factors that can directly affect it, including:
• The proximity of roads and other activities
• The location of existing structures and services on and near to the site
• The position of new structures in direct relation to the excavation
• The amount of space available on site for storage and lay down of materials.
It is next helpful to consider the risks that will be present throughout the
excavation:
• People may be
- Struck or trapped or asphyxiated if the sides of the excavation collapse
- Drowned if the excavation floods
- Burned or suffer electric shock if existing underground services are damaged
• People, plant or materials may fall into the excavation
• Nearby structures may be undermined by deep construction work.
The risk assessment is also an opportunity to plan how the excavation will be
conducted. The following hierarchy of risk control measures is a useful way of
making sure that no risk is taken unnecessarily:
1. Wherever possible, avoid the risk in preference to applying or developing
engineering type controls.
2. Use proprietary trenching systems that avoid the need for an employee to
enter the trench until it is safe. You may wish to consider trench-less methods,
battering the sides, trench boxes, etc
3. The use of simple drawings and sketches will be of more benefit to the
employees than lengthy written documents.
The risks in excavation work should thus be reduced to as low a level as possible
using the hierarchy of risk principles.
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东南西北人 发表于 2010-1-1 21:05:04 | 显示全部楼层
谢谢楼主给大家这么好的资料

特别是对资料的介绍很详细

便于大家有的放矢地下
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mli009797 发表于 2010-1-1 21:53:27 | 显示全部楼层
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iverson0238 发表于 2010-1-1 21:56:23 | 显示全部楼层
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wxysaeed 发表于 2010-1-2 00:56:33 | 显示全部楼层
谢谢楼主的新年礼物
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ctrl 发表于 2010-2-23 12:05:25 | 显示全部楼层
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windyxsw 发表于 2010-8-28 20:56:45 | 显示全部楼层
不错的资料
谢谢楼主分享
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windyxsw 发表于 2010-10-13 15:29:11 | 显示全部楼层
谢谢楼主给大家这么好的资料
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n900 发表于 2010-10-13 16:03:52 | 显示全部楼层
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zong2006 发表于 2011-3-5 20:58:53 | 显示全部楼层
不错的资料
谢谢楼主分享
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wanggangsmx 发表于 2011-4-22 07:21:30 | 显示全部楼层
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ljmtidilgw 发表于 2011-4-22 07:48:02 | 显示全部楼层
我看看最近需要这个
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whjsun 发表于 2011-5-3 12:27:15 | 显示全部楼层
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dzd001 发表于 2011-12-13 15:59:42 | 显示全部楼层
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Kristin 发表于 2018-4-30 00:14:24 | 显示全部楼层
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zong2006 发表于 2018-5-2 22:48:33 | 显示全部楼层
good stuff, thanks
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