【Construction case】HDL-200C top drive drilling rig in the foundation pit of complex strata

Stratum situation   Location (province): Guizhou Location (city): Bijie Model: HDL-200C top drive rig Drill tool configuration: 180 casing + 89 drill pipe Process type: foundation pit inclined anchor Construction technology: anchor bolt Formation situation: 0-2 m (no); 2-24 Clay clip; 24-27 meters of medium-weathered rock strata; 27-38 Karst cave (gravel and mud filling, easy to collapse hole); 38-60 m rock layer (moderate weathering, high weathering, regular distribution of fissure joints)   A variety of strata   Construction Angle(°): 30 Pore size (mm): 200 Hole depth (m): 50 Construction efficiency (min): 270 Pure drilling time (min): 180 Pure removal removal drill time (min): 56   Construction technology   Background Configuration: One HDL-200C drilling rig Mixing bucket (d1.3m×h0.8m) one Three-phase asynchronous motor, two (4kw) Common Portland cement (P.O42.5) several Control electric cabinet two One KL 180 three-cylinder grouting pump One moving screw-type air compressor 2 SN-25mm-21 Mpa grouting high-pressure tubes 2 SN-38mm-16 Mpa duct several     1、Install the first internal and outer pipe and drill bit in order and requirements, adjust the mast position of the drill rig, and pair with the hole; 2、Open the pump, slowly advance the footage, and observe the pressure change, the footage pressure should not be too large, adjust according to the actual demand; 3、Clip the drill pipe, reverse the power head and loosen the drill pipe.       4、When installing the drilling tool, put the drill pipe into the casing in advance, clamp the sleeve with the lower clamp, clip the drill pipe, move the double pipe to the mast, then rotate the drill pipe with the upper and lower threads, open the upper fixture, rotate the casing tightly, and start the pump rotary drilling. Open impact in the hard layer. Observe the rotary pressure, if the pressure is too large, it needs to be cleaned and discharged many times, if the slag discharge pressure can not fall down many times, it is necessary to observe whether the drill moves the deviation hole in the drilling process;     5、After drilling to the design depth, clear the hole, remove the drill pipe (when removing the drill pipe, the large arm can slide up to let the casing slide out of the hole plate with the upper and lower clamps), remove the anchor cable (if the anchor cable can not go down in the casing, pull the anchor cable with the power head and then down), and remove the casing after the anchor cable;   6、Move the machine to the next hole position, exit the position, and then start the anchor cable grouting.                     ——Anman Sales & Service Engineer: Sun Chong

12-29-2023

【Construction case】SJL-120 rotary jet drilling rig was constructed in MJS

Stratum situation   Location (province): Zhejiang Province Location (city): Hangzhou Drill model: SJL-120 rotary jet drill Process type: rotary spray reinforcement Construction technology: MJS construction method Stratigraphy: 1-3 meters backfill, 3-25 rice flour sand layer contains a small amount of mud Construction Angle (°): 90 Pile diameter (mm): 2,400 Hole depth (m): 19     Construction technology   Configuration:   ① A hole introduction drill, with 89 drill rod + 250-300 three-wing drill bit; ② A SJL-120 rotary jet drill, equipped with 142 porous drill + 142 porous drill rod + porous shunt + 25 diameter 6-layer high pressure pipe + 19 diameter 4-layer high pressure pipe; ③ One 230 high pressure grouting pump, two 90E high pressure grouting pumps (one pre-cut water and one reverse slurry water); ④ A 10 kg 12 cubic air compressor, pressure to ensure 0.8~1.0Mpa; ⑤ A car crane; ⑥ A return mud pump; ⑦ A fully automatic mixing station; ⑧ A set of cement tanks.     1、According to the requirements to determine the pile position, first with the hole drill, due to the characteristics of silt formation-cohesion is very small, easy to lead to hole collapse, it is recommended to use bentonite wall when the hole;   2、After drawing the hole, remove the hole drill, level the site to ensure the stability of the MJS rig (the steel plate should be laid when the site conditions are not met), align the drill at the center of the pile according to the requirements, and adjust the level with the support leg;     3、The crane lifts the drill bit and holds the power head, and seals the nozzle and suction nozzle with tape (prevent the nozzle and suction nozzle from being blocked during the drilling process. The tape is recommended to use the easy to break type), and then connect the drill rod in turn (pay attention to each joint sealing ring and sensor wire joint when connecting the drill rod), install the shunt after the required depth, and then connect the slurry pipe, gas pipe and water pipe to the shunt;     4、Open the background air compressor and high pressure pump grouting pump (230 high pressure grouting pump will pre-cut the bottom of the pile with clean water first, and change to cement slurry after 5 minutes) Pulp pressure is 40 mpa, pre-cut water pressure is 25~30 mpa, pressure is 0.9~1.0 mpa, reverse slurry water pressure is 10~15 mpa, rotary speed is 3 r/min, and lifting speed is 2.5cm / min During construction, pay attention to the change of rotary pressure and ground pressure ① to prevent drilling; ② bad reverse slurry and high ground pressure will lead to formation disturbance; good reverse slurry and low ground pressure will lead to hole collapse drilling The normal situation is: the hole has pulp and not excessive                   —— Anman Drilling Rig sales service: Lu Xinke      

04-19-2024

【Construction Case】MXL-150D6 Drilling Rig in Singapore

Basic information introduction   Location (province): Singapore Location (city): Singapore Drilling rig model: MXL-150D6 Drill tool configuration: 89 triple rotary spray drill pipe Process type: rotary spray reinforcement Construction technology: double rotary spray Stratum condition: 0-10 m yellow mud (containing a small amount of sand, slightly sticky, soft) Construction Angle(°): 90 Pore size (mm): 800 Hole depth (m): 7.72 Construction efficiency (min): 80 Pure drilling time (min): 6     Introduction to construction technology   1、Mark the hole point, the whole site, dig slurry tank, lay slurry pump and lay steel plate.   2、The machine moves to the hole point, each leg support the ground, to the left and right and perpendicular.   3、The background is ready to hit 7.72 meters to the bottom with water and gas, and the drilling machine feeding parameters (water pressure: 20 MPA, air pressure: 0.69 MPA, water flow 65 L/min, footage degrees 1-2 m / min, speed 15 r/min).   4、Machine parameters during lifting (water-ash ratio example 1:1, slurry pressure 25 MPA, pressure 0.69 Mpa, slurry flow 56 L/min, lifting speed 9cm / min, speed 12 r/min).   5、For each meter of the drill pipe, the outer wall of the drill pipe shall be cleaned with water gun, the mud pump shall be opened when the mud in the drainage tank is more than half, and mud turbulence is prohibited at the site.   6、When the drill bit is 1.5 meters from the ground, the suction mouth is closed to open the suction mouth is washed for about one minute, the high pressure pump pressure is gradually reduced by 1 MPA, and the drill pipe is lifted from the ground, and the nozzle can be observed and cleaned.   7、Move the machine to enter the next hole position preparation.   —— Anman drilling rig sales service: Sun Chong         Journey of drilling rig   1、Package     Meet the five major requirements of transportation and packaging:   ① Adapt to the different characteristics of different commodities, special commodities independent packaging; ② Adapmeet the requirements of different transportation modes; ③ Consider the legal provisions of the relevant countries and the special requirements of the customers; ④ Easy for transportation and identification; ⑤ Save money on packaging costs.   2、Sign     Complete signs, posted eye-catching:   ① transport mark; ② Indicative mark; ③ Warning signs; ④ Weight and volume mark; ⑤ origin sign   3、Transport     The role of Marine cargo transportation:   ①Marine cargo transportation is the main way of international trade transportation; ②Marine cargo transportation is one of the important channels for the country to save foreign exchange payment and increase foreign exchange income; ③The development of Marine transportation industry is conducive to improving the country's industrial structure and the structure of international trade export goods; ④The Marine transport fleet is an important reserve force for national defense.   4、Arrive            At present, Anman rig has been exported to Singapore, the Philippines, Malaysia, Thailand, Vietnam, Bangladesh, Argentina, the United Kingdom, Canada, Africa and other countries and regions, to provide you with "buy at ease, comfortable use" products and intimate services.

03-29-2023