There are materials and dry goods in building safety production
. 
Building construction has always been an accident prone industry
. 
Over the years, the number of deaths caused by “five major injuries” accidents such as falling from height, collapse, object strike, mechanical injury and electric shock has always accounted for about 90% of the total number of deaths, among which the number of casualties caused by object strike has always ranked second (accounting for all accident deaths in 2019) 91%)
. 
Object strike accident refers to injury accident caused by gravity or inertia force of out of control object
. 
Most of the injuries are caused by falling objects, flying objects and broken pieces
. 
In the construction, it is usually caused by the falling of bricks and tools from high places, or the splashing of debris caused by piling and hammering
. 
Next, let’s make an inventory of several typical object strike accidents in recent years at the construction site
. 
01 “12.22” object strike accident of Hengjun building materials technology Hebei Co., Ltd
. 
in Changping District, Beijing, at about 6:30 on December 22, 2020, an object strike accident occurred in the steel bar processing zone of Hengjun building materials technology Hebei Co., Ltd
. 
of Beijing Nannong cement component factory, Nankou Town, Changping District, Beijing, during the process of lifting tarpaulin from the steel bar stack by the wire rope worker station, resulting in one death
. 
After investigation, it was found that the cause of the accident was that the operator risked climbing on the steel bar stack when the steel bar stack was stacked seriously and ultra-high, and no safety protection measures were installed around the steel bar stack to prevent the steel bar from toppling
. 
The risk-taking behavior was the direct cause of the accident
. 
02 “11.09” object strike accident of Ningxia juhengtong Construction Engineering Co., Ltd
. 
at about 8:00 on November 9, 2020, when Ningxia juhengtong Construction Engineering Co., Ltd
. 
organized workers to dismantle the equipment placed in K138 + 235.3 cast-in-place bridge material yard of section A5 of Wuma highway (the project had stopped work on November 6, which belongs to the site clearing activity of Ningxia juhengtong Construction Engineering Co., Ltd.), the accident occurred There was an accident
.
One person died and one was injured, resulting in a direct economic loss of 770000 yuan
.
After investigation, it was found that the cause of the accident was that the workers at the scene violated the Bailey beam dismantling operation regulations of Ningxia juhengtong Construction Engineering Co., Ltd., and did not listen to the dissuasion and forced illegal operation, which was the cause of the accident
.
03 “8.29” object strike accident of Longfu square renovation and demolition project at No.1 longfu Temple front street, Dongcheng District, Beijing
.
At about 14:00 on August 29, 2020, an object strike accident caused by falling objects occurred during the construction of Longfu square renovation and demolition project at No.1 longfu Temple front street, Dongcheng District, resulting in the death of a worker
.
The direct economic loss is more than 1.9 million yuan
.
According to the investigation, the cause of the accident was that the workers did not comply with the requirements of the special construction scheme for the demolition of non load bearing structure and decoration of Longfu square renovation and demolition project, and illegally entered the garbage clearing and transportation channel (in the elevator shaft on the first floor), which directly led to the object strike accident; the construction unit did not strictly implement the construction scheme in the demolition construction process, and did not supervise the dangerous area by a special person Safety warning signs are not found and eliminated in time, which indirectly leads to the occurrence of accidents
.
04 “2020.1.17” object strike accident of demolishing building project at 9219 Zhongchun Road, Minhang District, Shanghai at about 15:00 on January 17, 2020, a falling strike accident occurred at a construction site of Shanghai Guoli automobile leather accessories Co., Ltd
.
at 9219 Zhongchun Road, Minhang District, Shanghai, resulting in the death of two operators on the spot
.
According to the investigation, the cause of the accident is that the on-site operators did not carry out the construction in strict accordance with the company’s “construction scheme” and took risks, which directly led to the accident; the safety management of the construction site was not in place, the professional and full-time safety production management personnel were not arranged for on-site supervision, and the hidden safety problems found were not eliminated and prevented effectively, which also indirectly led to the occurrence of the accident I’m a student
.
Painful accidents, fresh lives! Behind every safety accident is the destruction of countless families
.
Every lesson of blood is a warning to the blood of safety responsibility
.
Therefore, in the construction process, how to prevent the occurrence of object strike accident is particularly necessary
.
Here, I’d like to summarize some safety precautions and requirements for preventing object strike accidents in the construction process
.
Preventive measures for object strike accidents: 1
.
During cross operation, the lower operation position should be outside the falling radius of the upper operation, and when it is within the falling radius, safety protection shed or other isolation measures must be set up
.
2
.
The following parts from the construction to the second floor of the building, the upper part of which shall be provided with safety protection shed: (1) access for personnel (including the entrance and exit of material hoist and construction hoist); (2) access road and gathering and processing yard within the influence range of falling objects; (3) access within the slewing range of crane jib
.
3
.
The safety protection shed should be set up with section steel and steel plate or double-layer wooden board, and should be able to withstand the impact of falling objects
.
The coverage of the protective shed should be greater than the influence range of falling objects in the construction above
.
4
.
The hole with short side length or diameter less than or equal to 500mm shall be sealed
.
5
.
Personnel entering the construction site must correctly wear safety helmets, and the quality of safety helmets shall comply with the current national standard “safety helmets” gb2811
.
6
.
All objects that may fall on the site of work at height shall be removed or fixed in advance
.
The stored materials shall be stacked stably, the portable operation tools shall be put into tool bags, and the walkways, passage boards and climbing tools shall be cleaned
.
The operator shall indicate that the objects are connected stably with proper force and shall not be thrown
.
7
.
The gap between the lower edge of the toe board of the edge guard rail and the bottom surface shall not be greater than 10 mm
.
When stamping the steel scaffold board on the operation platform or scaffold operation layer, the diameter of the inner tangent circle of the punching hole on the board surface shall be less than 25 mm
.
8
.
Reliable sealing measures shall be taken for the bottom layer of cantilever scaffold and attached lifting scaffold
.
9
.
The top surface of the first section of wall protection well ring at the orifice of manual digging pile shall be no less than 200 mm above the ground, and no spoil, irrelevant machines and tools and other debris shall be accumulated around the orifice
.
A protective cover shall be set above the hole digging operators, and the slag bucket shall not be full
.
When slag is discharged, the operators in the hole shall be under the protective cover
.
Before lifting massive rock, the operators in the hole should get out of the hole
.
10
.
Working face and access road near the slope
.
When the geological conditions of the upper slope are poor, or the blasting method is used to construct the slope earthwork, the blocking net, anchor rod or steel wire mesh shall be set on the slope for protection
.
11
.
The demolition or dismantling operation shall meet the following requirements: (1) the demolition or dismantling operation shall not be carried out at the same time; warning area shall be set in the operation area, and special person shall be responsible for monitoring and warning; there shall be no other personnel below during the operation
.
(2) In the demolition project, the dismantled objects, surplus materials and wastes shall be cleaned up and transported away in time
.
The components and fittings shall be delivered downward or with ropes, and shall not be randomly placed or discarded downward
.
The scattered materials shall be slid down the chute
.
(3) After the objects are removed, the temporary stacking place shall not be less than 1m from the edge of the stacking structure, and the stacking height shall not be more than 1m
.
No dismantled objects shall be stacked at the edge of the floor, passageway, scaffold, etc.; 12
.
The construction site personnel shall not stay or rest in the area covered by the crane and where objects may fall
.
•
.
