Mining project schedule adjustment method

(I) System process of mining project schedule adjustment The adjustment of mining project construction schedule depends on the control of actual construction progress. As the progress control personnel of the construction project, the construction progress can be tracked and checked, and the specific method can adopt the collection progress. Reports, on-site inspections, regular meetings, etc., and then based on the collected progress data to determine the actual progress. On this basis, analyze the reasons for the deviation of the progress and its impact on the follow-up work and the total construction period, and adopt the corresponding plan adjustment method according to the constraints of the follow-up work and the total construction period.
(II) Adjustment method of mining project construction schedule According to the inspection of the mining project plan, if the schedule deviation occurs, the reason must be analyzed in time, and a reasonable adjustment method should be adopted according to the restriction conditions. Usually, when the construction schedule deviation affects the follow-up work and the total construction period, the plan adjustment should be made in time.
1. When the actual progress of the key work of mining engineering construction is slower than the planned progress, it is usually necessary to shorten the duration of the follow-up key work. The adjustment methods may include:
(1) Re-arranging the time of follow-up key processes, generally can speed up the construction progress of follow-up work through mining potential, thereby shortening the time of follow-up key work and achieving the same construction period of key lines. As the mining project construction project is affected by many factors, in the actual adjustment, the post-sequence process of the construction delay process or the immediate adjacent process should be adjusted as much as possible to restore the project construction progress to normal as soon as possible.
(2) Change the logical relationship of follow-up work, such as adjusting the sequential operation to parallel operation, lap joint operation, shortening the time of subsequent work, and shortening the total construction period. This adjustment method should be implemented to ensure that the original planned construction period is unchanged, and the order between the original tasks is also unchanged.
(3) Re-construct the construction schedule to meet the original schedule requirements. Due to the deviation of key work, if the local adjustment can not be effective, the remaining work can be re-planned, making full use of the maneuver time of some work, especially the construction of supporting or auxiliary work, to meet the requirements of the total construction period.
2. If the actual progress of the non-critical work of mining engineering construction is lagging behind the planned progress, if it affects the follow-up work, especially the total construction period, it needs to be adjusted. The adjustment methods may include:
(1) When the work schedule deviation affects the follow-up work but does not affect the construction period, the time difference of the follow-up work can be fully utilized, the start time of the follow-up work can be adjusted, and the delayed construction period can be recovered as soon as possible.
(2) When the work schedule deviation affects the follow-up work and also affects the total construction period, in addition to making full use of the time difference of the follow-up work, it is necessary to shorten the time for part of the follow-up work, and also change the logical relationship of the follow-up work to keep the total construction period unchanged. The adjustment method is similar to the adjustment of the key work.
3. The construction schedule is delayed, and the work items can be increased or decreased. For example, if some projects are temporarily not built or slowed down, it will not affect the completion of the project or the use of the project, nor will it affect the normal efficiency of the project. However, it should be noted that the increase or decrease of work items should not affect the overall logical relationship of the original schedule, so that the original plan can be implemented smoothly. In the mine construction work, if the layout of the working face is properly adjusted, the amount of roadway excavation work can be reduced; the ground construction project can be completed in stages and batches to achieve the purpose of shortening the construction period.
4. Do a good job of resource adjustment. In the construction process of the project, there are many factors in the progress deviation. If the resource supply is abnormal, resources should be adjusted to ensure the normal implementation of the plan. The method of resource adjustment can be solved by resource optimization. For example, in the construction of wells and lanes, we must carefully allocate the labor force, organize transportation operations, ensure the improvement of transportation capacity, and ensure the supply of water, electricity and gas.

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