With the vigorous development of subway construction, on the one hand, underground space is effectively used, and the problem of urban traffic congestion is alleviated; On the other hand, due to the relative lack of technology and management personnel, the safety problems in subway construction are gradually emerging. The following is what I share with you. Welcome to watch!

Article 1

1, accident profile

The accident happened at around 1 1 in the early morning of a certain day in 2008. The accident occurred at the transfer station and control center of Line 1 and Line 3 of the project. From the start of construction to the accident, nearly 6.5438+0.5 million m3 of earthwork excavation has been completed, and structural engineering construction is being prepared. When the accident happened, the steel pipe scaffold for drilling was being set up on the north side of the foundation pit. The steel pipe scaffold is about 30m long and 3m wide. At that time, the erection height was 3~6m. Site workers 16, including steel pipe scaffold workers 12 and ground workers 4. When the bridge crane transported steel pipes and fasteners to the scaffold, the scaffold collapsed as a whole, causing injuries to 16 workers, of whom 1 died after being rescued, and 15 people were hospitalized.

2. Cause analysis of the accident

Construction reason of 1***

* * *1* * steel pipe scaffold has poor integrity and stability during erection.

* * * 2 * * When the accident happened, a lot of steel pipes and fasteners were piled up on the steel pipe scaffold, causing overload; When the bridge crane is working, personnel and steel pipes are located at one side of the scaffold, resulting in unbalanced load.

***3*** Some fasteners were not fastened properly, and braces and scissors were not added in time during erection.

* * * 4 * * Because there is no anchor rod installed, the scaffold cannot be reliably tied to the rock wall by connecting with the anchor rod.

2*** Supervision reasons

The safety supervision organization, rules and regulations and operation of the supervision department are basically normal, but the number of personnel is small, and the actual working ability of some post supervisors is weak. There are some problems in process control, such as failure to track and rectify safety problems in time and insufficient control.

3. Accident handling

After the accident, the competent department of * * * started the investigation and handling of the accident, and the Safety Production Supervision and Management Bureau determined that the accident was caused by the workers' failure to blindly take risks and violate the rules and regulations in strict accordance with the specifications, standards and construction plans, the construction unit's failure to manage the construction site, the lack of supervision and inspection by on-site management personnel and full-time safety management personnel, the lack of safety training and the untimely handling of hidden dangers. The engineering supervision department also has dereliction of duty. Deal with the relevant responsible persons as follows:

*** 1*** The direct cause of the accident is that the construction unit has a weak awareness of production safety, lax management, illegal operation by operators and inadequate safety measures. * * * Administrative penalties shall be imposed on the construction unit and relevant personnel respectively.

* * * 2 * * In the process of supervising the project implementation, the supervision department failed to strictly supervise the construction unit according to the safety technical measures and special plans in the construction organization design, and found that there were hidden dangers of safety accidents, and did not require the construction unit to rectify in time, and did not require the construction unit to suspend construction and report in time, giving the supervision department and the chief supervision engineer an administrative penalty of * * *.

4, supervision tips

The scaffolding accident could have been avoided, but the violation of the rules and poor work of the person in charge also led to the accident. The construction unit must bear the main responsibility for the serious illegal operation, but the supervision department is not firm and effective enough to deal with the problem because of insufficient personnel and low experience and ability, so we should learn from it. To sum up, with perfect organization, system construction and necessary personnel training, we must pay close attention to implementation, attach great importance to human factors, and implement various requirements and regulations into process control.

the second

20 131at 4: 40 pm on October 28th, a huge cavity with an area of 690 square meters and a depth of about 30 meters appeared at the junction of Kang Wang South Road and Shanmulin Road within the jurisdiction of Lingnan Sub-district in Liwan District, * * * caused six buildings and1shops to collapse, and the affected area was about 65,438+. Although the accident did not cause casualties, it happened in the bustling business district of the old city, with old and damaged buildings, numerous underground pipelines, dense population, wide coverage and great potential harm, and it happened on the eve of the Spring Festival holiday, which easily caused residents panic and social disorder. In the face of this accident, city, district and street leaders attached great importance to it and immediately launched a thorough and effective emergency response. All departments responded quickly, and personnel, ideas and measures were gradually put in place. People were organized to help themselves and each other in an orderly manner, and 4 12 stores, 126 stores and 5438+02 stores were evacuated urgently. Among them, 39 buildings, 103 households, and 352 people accepted temporary resettlement.

Article

On August 20th, 200 1 year, the supervision unit of a subway station project site in Shanghai was contracted by a construction company in Shanghai and subcontracted by an earthwork company, and was engaged in earthwork excavation of a deep foundation pit for an engineering consulting company. At 18: 30 pm, the earthwork subcontracting project manager handed over 1 1 to foreman Chu. At about 19, Chu explained the production task to the people at 1 1, and the people at 1 1 began to go down to the foundation pit at 65438. The electrician He Mou didn't go down to the foundation pit around * * * 20 o'clock, and the soil at the 16 axis suddenly began to slide. Immediately, two people were buried by the soil, the other two were buried above the waist, and the other six quickly fled to the foundation pit. After receiving the report, the on-site project department immediately prepares to organize emergency rescue. At 20 o'clock (10), the second large-scale earthwork landslide occurred from the axis 16 to the axis 16. The landslide earth rushed from the 18 axis to the 12 axis, burying the other two people and smashing the 16 steel support in the foundation pit. After the accident, although the project department tried its best to rescue them, four people buried in the soil eventually died of suffocation for too long.