The rock pipe jacking machine is an advanced construction machinery and equipment used for drilling underground pipes, especially suitable for underground construction where the rock and soil are hard or some narrow and complex terrains. Rock pipe jacking machines are subjected to extremely high pressures during construction, so the pressure they are subjected to becomes an important consideration. This article will introduce the pressure condition and bearing capacity of the rock pipe jacking machine.
The pressure on the rock pipe jacking machine mainly comes from cutting force, support force and formation stress. Among them, the cutting force is generated by the rock pipe jacking machine during the drilling process, and its main function is to cut and break the underground soil layer or rock layer to make it diggable and permeable. Therefore, the pressure of the rock pipe jacking machine during cutting is directly related to its working efficiency and drilling quality. The support force refers to the pipe support and protection capabilities of the rock pipe jacking machine, which is one of the keys to ensure construction safety. Formation stress refers to the pressure of the underground rock or soil layer on the rock pipe jacking machine, which includes the gravity of the formation, the compression of the rock and the stress that causes the deformation of the drilling.
The pressure that the rock pipe jacking machine can withstand varies with its model, size, material, etc. At present, there are mainly subway rock pipe jacking machines, industrial rock pipe jacking machines and hydraulic rock pipe jacking machines on the market. Taking the subway rock pipe jacking machine as an example, its maximum pressure can reach 3,500 tons, but in general, its pressure range is controlled between 1,000 and 2,500 tons in actual use. In this case, the cutting force and supporting force of the rock pipe jacking machine are relatively balanced, which can meet the basic requirements of construction.
In addition, the rock pipe jacking machine also needs to consider the influence of other factors on its bearing pressure. For example, the depth of construction, the stability of the formation, the height of the groundwater level, etc. will directly affect the bearing capacity of the rock pipe jacking machine. In addition, the topography of the construction site is also one of the influencing factors. If the terrain is complex and the slope is large, lateral pressure will be generated, which will reduce the bearing capacity of the rock pipe jacking machine.
In the actual construction process, the construction personnel usually select the appropriate rock pipe jacking machine to complete the construction task according to the project needs and geological conditions and other factors, so as to ensure the construction efficiency and quality of the project. In addition, construction personnel also need to carry out regular inspection and maintenance on the rock pipe jacking machine to ensure the stability of its mechanical performance and safety performance.
In short, the rock pipe jacking machine is an advanced construction machinery and equipment, and the pressure it bears is directly related to the construction efficiency and quality. The bearing capacity of the rock pipe jacking machine is closely related to its model, size, material and other factors, and is also affected by factors such as stratum stress, construction depth, topography and landform. Therefore, before using the rock pipe jacking machine for construction, factors such as geological conditions and engineering requirements need to be carefully considered to ensure that the rock pipe jacking machine's bearing capacity meets actual needs.
