Daqiang Coal Mine is a pair of mines under construction by Tiefa Coal Industry Group, located in Kangping County, Shenyang City, with a designed production capacity of 654.38+500,000 t/a. The preliminary work of the project started in June 2006, and now it has entered the normal mine construction stage. The main shaft, auxiliary shaft and air shaft have all entered the bedrock section respectively, and the ground buildings have begun to take shape, basically meeting the needs of construction, production and life. Entrusted by Daqiang Coal Mine, the supervision company has participated in the whole process and all-round control and management of the whole project from the construction preparation stage, and its work involves three controls, three pipes and one coordination (that is, quality control, schedule control, investment control, contract management, information management, safety management, and coordination of the working relationship between the construction parties). Among them, safety management is the top priority of supervision work. For large-scale mine engineering construction projects, how to effectively intervene in safety management, promote safe production and civilized construction, and ensure the personal safety of construction personnel has become a new topic faced by supervisors. In recent years, according to the engineering characteristics of coal mine construction, supervisors have carried out fruitful safety supervision work according to law, achieved certain results and accumulated rich safety supervision experience. 1 Performing duties according to law and assuming the responsibility of safety supervision refers to the comprehensive safety management of people, machines, materials, laws, environment and the whole construction process in engineering construction, and adopting legal, economic and technical means to ensure that the construction behavior conforms to the national laws, regulations and relevant policies on safety production and labor protection, stop the adventure, blindness and randomness in construction behavior, and effectively control the safety of construction projects within the allowable risk range. Since the promulgation and implementation of the Law on Safety in Production in 2002, the relevant state departments have successively promulgated a series of laws and regulations in the field of engineering construction, stipulating the corresponding safety production responsibilities of engineering construction, survey, design, construction, supervision and other related units, and refining the supervision responsibilities, especially the Regulations on the Administration of Safety in Production in Construction Projects issued by the State Council in 2004. In June 2006, the State Administration of Coal Mine Safety, the State Administration of Work Safety and other five ministries and commissions jointly issued the Notice on Strengthening the Management of Coal Construction Projects, which stipulated the safety supervision responsibilities of supervision units in coal mine construction projects as follows: engineering supervision units should undertake the supervision responsibilities of coal mine safety construction. Engineering supervision units shall, according to the characteristics of coal mine construction, be equipped with corresponding supervisors, supervise in accordance with laws, regulations and mandatory standards for engineering construction, and review whether the safety technical measures or special construction schemes in the construction organization design meet the mandatory standards for engineering construction. In the process of supervision, if hidden dangers of safety accidents are found, the construction unit shall be required to make rectification; If the circumstances are serious, the construction unit shall be required to temporarily stop construction and report to the construction unit in time. If the construction unit refuses to rectify or stop construction, the project supervision unit shall report to the coal mine safety supervision department in a timely manner. Through the study of laws and regulations, supervisors unified their thinking and deeply realized that safety supervision is stipulated by laws and regulations and mandatory. Supervisors must perform safety supervision duties according to law, undertake safety supervision responsibilities, and standardize safety supervision behaviors. 2. Establish and improve safety supervision rules and regulations, and earnestly implement responsibilities. On the basis of carefully studying the laws, regulations, norms and standards related to safety in production, supervisors at all levels of the project supervision department set up a safety supervision organization with the director as the main body, rationally equipped supervisors, arranged four supervision engineers to take full-time charge of safety supervision, made clear the contents of safety supervision, formulated various systems, supervision schemes, working procedures and measures of safety supervision, and combined with the specific characteristics of the project, compiled the safety of various professional projects in mine, soil and safety. Based on the construction characteristics of mine construction projects, the detailed rules focus on safety supervision in mine construction, and classify the processes involved in shaft operations such as lifting system, suspension system, rock drilling and loading machinery, and blasting operation. , and formulate regular or irregular inspection system for the hidden dangers that are easy to occur in each link. When problems are found, the construction unit is required to make timely rectification to eliminate hidden dangers in the bud.
At the same time, according to the contents of laws and regulations, the safety responsibilities of supervisors at all levels are clarified, and the safety responsibilities of directors, supervision engineers and supervisors are specified in detail. Establish the safety inspection system of supervision department, and define the division of labor, inspection time, place, frequency and method according to different majors. Supervisors at all levels shall, according to the relevant requirements of the supervision safety inspection system, check and implement item by item in the process of patrol inspection according to the specific terms formulated, and notify the construction unit in writing in the form of supervision engineer's notice according to the specific parts of hidden dangers and the degree of harm, and put forward rectification requirements. Gradually formed a full-time safety engineer to focus on management, professional supervision engineer to assist and cooperate, on-site supervision of key parts, point-to-face combination, full-time management of the safety pattern. 3. Do a good job in pre-control and in-process control, and strengthen coordination and communication with the construction unit. Safety supervision work should be strictly in accordance with the provisions of "Coal Mine Safety Regulations", "Regulations on Safety Production in Construction Projects" and relevant laws, regulations and mandatory standards for engineering construction, and the whole process control method of pre-control, in-process supervision and post-summary should be adopted. 3. 1 Safety Supervision Control in advance (1) Supervise the construction unit to improve the safety production guarantee system. The supervision department focuses on the implementation of the safety organization of the construction unit, whether the full-time safety inspectors are in place, the formulation of the safety system and the operation of the safety system. Subcontractors, in particular, are more prone to safety problems because of their complex sources of employees and imperfect management. The supervision department will also put the audit of subcontractors into the focus of safety supervision, requiring them to have a perfect safety production guarantee system before entering the site. (2) Carefully review the construction organization design and special safety construction scheme. When the supervision department requires the construction unit to submit for approval the construction organization design, it must also submit for approval the special safety technical scheme. For the special safety construction scheme, safety technical measures, high-risk operation safety construction and emergency rescue plan submitted by the construction unit for examination and approval, the supervision department shall organize relevant personnel to seriously carry out joint review and give approval after reaching an agreement. In the process of reviewing the construction organization design of the auxiliary shaft project, the supervisors used their rich professional knowledge to question the safety problems related to the shaft hoisting winch, hanging plate, sheave, etc. 14, which enabled the construction party to update and replace some equipment and safety components in time, thus ensuring the safety from the source. It is required that the construction unit must attach the safety inspection results when preparing the special construction plan of partial projects with greater danger, and it can only be implemented after being signed by the technical director of the construction unit and the chief supervision engineer. The construction unit is also required to organize experts to demonstrate, evaluate and review the special construction scheme involving deep foundation pit and tall formwork engineering and the operating rules of mine construction engineering in civil engineering to ensure the reliability of the scheme. (3) Strictly control safety disclosure and special operations personnel holding relevant certificates. Before construction, supervisors must check whether there are any omissions in the safety disclosure of workers. Attend the briefing and witness the safety disclosure. The focus of safety supervision work is to put human factors in the first place, and use various channels and means to urge every construction worker to enhance their safety awareness subjectively and protect themselves at all times. Especially for tower crane drivers, signalmen, scaffolders, electricians, welders, blasting workers, winch workers and other special operators, in addition to checking the specified number of posts, random inspections in construction are also strengthened to ensure that the certificates are consistent. (4) Close the mechanical equipment and materials entering the site. All mechanical equipment and materials entering the site must be submitted to the supervisor for inspection according to the prescribed procedures. If the safety and quality certification materials are incomplete, the inspection expires or the on-site inspection finds that they do not meet the safety requirements, they shall not be put into use and leave the site within a time limit. Over the past three years, * * * has replaced more than 30 unqualified tower cranes, switches and other equipment. (5) Use special safety meetings, site meetings, etc. Remind the safety problems that need to be paid attention to in the next step or new process as soon as possible. Every Tuesday afternoon, at the regular engineering meeting, review the safety situation of the past week and prompt the safety focus of next week. For possible safety accidents, the construction unit is required to take corresponding preventive measures and formulate emergency rescue plans for safety production accidents. 3.2 Process control of safety supervision (1) Conduct safety knowledge training for all supervisors once a week, popularize safety knowledge, and clarify safety responsibilities, so that when they check the quality, they can find some safety hazards and deal with them immediately. (2) Through the analysis of the key points and safety risk points of engineering safety supervision in various disciplines, the key parts with frequent safety accidents in the field construction process are found out, and corresponding supervision means and measures are adopted to control them in the form of charts. In this way, the supervisor can not only pay attention to the safety on the surface, but also grasp the key parts during the work inspection. (3) Adhere to the system of regular safety inspection and spot check or special inspection. On the basis of regular safety self-inspection by the construction unit and daily patrol inspection by the supervision department, organize a comprehensive safety inspection (ten-day inspection) attended by the construction unit and the construction unit every ten days, and report the inspection results in writing. At the same time, according to the progress of the project or the signs of accidents found on site, special inspections will be organized in a surprise manner to find and solve problems or hidden dangers in safe construction in time. (4) Inform the construction safety problems in time, which shall be signed and implemented by the project manager or relevant units, and be solved within a time limit, and the rectification results shall be replied to the supervisor in writing. Targeted supervision notice has invisible pressure on the construction unit to rectify potential safety hazards and is a powerful means of supervision safety management. As the main body of construction safety, whether its production behavior is standardized will directly affect the overall safety production of engineering construction projects. Therefore, the project supervision department should first help the construction unit to control the safety production in advance and in the process. Therefore, only the supervision unit and the construction unit fully and effectively coordinate and cooperate closely in the process of engineering construction can we control major safety accidents and ensure the smooth completion of engineering construction.
4 Strengthen dynamic management. Make clear the key points of safety supervision in each construction stage. In the daily management of construction safety, we should pay attention to strengthening dynamic management, whether it is the review of schemes and measures or the content of on-site inspection. The supervisor's review of the special safety scheme is not limited to the approval at the start of construction, but is gradually completed in different construction stages with the progress of the project, and the dynamic management of the project is strengthened according to the whole process of the project. Certificates of various special operators must be verified repeatedly. Supervisors must always review the relevant information of the construction unit to ensure its timeliness and authenticity.
In different construction stages, the focus of safety supervision is different from foundation to main body in civil engineering, and the focus of safety management is shifted from foundation pit support to scaffolding, aerial work and tower crane operation. In mine construction projects, the focus of safety supervision has gradually shifted to construction blasting, initiating explosive device management, one ventilation and three prevention. From the perspective of the whole project, the content of safety management in each stage of construction preparation, construction implementation and completion acceptance has also changed greatly. In a word, safety supervision is a work with high technical content and rich connotation. Only by firmly grasping the safety key points in each stage can the safety work of construction projects be in a dynamic monitoring state and achieve the purpose of long-term management. 5 Strict and standardized management of safety supervision data is formed by the project supervision department in the process of implementing safety supervision on site, which is a true and comprehensive reflection of the safety production process of construction projects and a witness to the quality and level of safety supervision work. Therefore, the management of safety supervision data must be strictly standardized. Safety supervision data must be true and complete, which can reflect the whole picture of the regulatory agencies performing their safety supervision duties according to law. The supervisor shall record the safety production and safety supervision of the construction site on that day in detail in the supervision diary, as well as the hidden dangers and problems found and handled, and the director shall timely review and sign the opinions.
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