Rammer tube hammer specification3
Rammer tube hammer specification3
The formation of laying relatively easy, this formation we call ram tube hammer shop management want to formation. In the dense
Real, hard, big viscosity, water little, sand gravel content (more than 60%) of formation of laying relatively
Difficulties, this formation we call ram tube hammer laying difficult formation. Obviously, in the ideal of formation
Choose smaller diameter tamper tube hammer laying large diameter pipeline, in difficult formation is to must choose the larger
The diameter of the tamper tube hammer laid smaller diameter pipeline.
The actual engineering to average rate of laying 2 ~ 5 m/h standards choose tamper tube hammer, to reduce the laying into
Laying diameter (mm)
Laying length (m)
10 and 30 and 40 50 60 70 80 90 100 110 120
Figure 4 BH series tamper tube hammer for laying diameter and single laying length
Said originally ideal. Figure 4 to standard map out BH series tamper tube hammer for laying diameter and single
Laying length lines, reference formation for secondary laying difficulty formation, engineering may refer to the map choose tamper tube
7. Tamper tube hammer laying the steel tube wall thickness
Rammer tube hammer laying in the steel tube wall thickness there are certain requirements (table 4), when the steel tube wall thickness less than
Requirements of the minimum wall thickness, the need to strengthen the steel pipe end and joint joint place, to prevent steel pipe end and joint
Be cracked. Steel pipe anticorrosion requirements into, corrosion work should be done before in the construction. To prevent anticorrosive layer in ram
In the process of pipe damage, had better use glass reinforced plastic anti-corrosion, available methods of anticorrosion and: three oil two cloth asphalt
Anticorrosive, epoxy resin anticorrosion, etc.
Table 4 tamper tube hammer laying requirements of the steel pipe minimum wall thickness
Pipe diameter (mm) wall thickness (mm) pipe diameter (mm) wall thickness (mm)
Φ acuities 100 4 Φ 500 - Φ 800 9
Φ 100 - Φ 180 5 Φ 800 - Φ 1000 10
Φ 180 - Φ 250 6 Φ 1000 - Φ 1200 12
Φ 250 - Φ 350 7 Φ 1200 - Φ 1500 15
Φ 350 - Φ 500 8 Φ 1500 - Φ 2000 19
7. Pneumatic rammer tube hammer pipe-laying construction process
Pneumatic rammer tube hammer laying project general construction procedure as shown in figure (5) shows.
Engineering began to
Equipment approach work pit excavation ready to steel tube
Laying preparation work
Rammer pipe, tube, welding
Whether take over
Figure 5 pneumatic rammer tube hammer laying process flow diagram
7.1 field investigation
Field survey data is the important basis for engineering design, but also decided to engineering difficulty degree, meter
The project cost is the important factor, so we must pay great attention to on-site investigation work, investigation material must be fine
Indeed, reliable. Field investigation including surface survey and underground survey two parts work.
7.1.1 surface survey
The main purpose of surface survey is to determine through laying route. The main factors of consideration are:
A. as far as possible, conform to the municipal administration departments of examination and approval routing;
B. work under the tube length and width of the pit requirements;
Cristiano equipment approach and handling is convenient;
D. do you have enough site for equipment occupied;
E. In residential areas consider the influence of the construction noise.
For surface survey should be fully considered the factors of construction site, according to survey results map out
Construction site layout.
7.1.2 underground survey
A. underground original pipeline and facilities of exploration and formation of the investigation. Underground original pipeline and facilities exploration
For through the city streets is particularly important. On both sides of the street underground often have sewage pipe, water pipe, and high pressure
Cable, communication cable, thermal pipeline, sometimes crisscross, some places even basic or people
Prevent engineering, engineering design should avoid these facilities, and keep the distance these facilities must be safe distance
From. These facilities position and direction should be marked in the construction design section and plan on. Understanding of the relevant
Department of files, search the original mark will help to determine the accurate position of these facilities. For gold
Is plumbing or cable available line instrument for their further verification.
B. formation investigation mainly includes formation soil types, sand, gravel bearing situation, underground water conditions
Exploration. These findings may through the looking for the geological data and excavation exploratory trench way to getting the. Tamper tube
Engineering is generally going to excavation pit under pipe work, can will exploratory trench and working pit close 2 for one. Important engineering or
Through large depth inconvenience slot, can use drilling sampling, engineering difficulty, the greater the sampling interval is small.
Sampling should obtain the material: standard soil classification, soil porosity, containing water, water permeability, etc.