A New Drilling Method Shaft Tunneling Machine

Abstract

The present invention proposes a new type of shaft boring machine for well drilling, which includes a derrick and a hydraulic pump station. The upper part of the derrick is provided with a lifting mechanism, which is connected with a sliding frame, which is slidably arranged on the derrick; The moving frame is sequentially connected to the tensioning mechanism and the propulsion mechanism through the drill rod, the tensioning mechanism is connected to the propulsion mechanism, the propulsion mechanism is respectively connected to the stabilizer and the cutter head, and the stabilizer is matched with the cutter head; the hydraulic pump station They are respectively connected with the lifting mechanism, the propulsion mechanism and the stabilizer. The invention introduces the construction concept of tunnel boring machine into the shaft construction, adopts the power submerged drive, there is no counterweight in the well, the drill pipe does not need to transmit torque, and only bears the gravity load, so as to realize the ultra-deep drilling construction, the drive system, the shoe propulsion system, and the stability All structures such as the cutter head are placed underground to directly drive the cutter head to break rock, the support shoe provides the tension force, and the propulsion cylinder provides the propulsion force, improving the rock breaking ability and efficiency of the cutter head and realizing efficient and precise drilling construction.

Description

technical field [0001] The invention relates to the technical field of drilling and boring machines, in particular to a novel shaft boring machine for well drilling. Background technique [0002] The traditional shaft drilling rig adopts top drive, drill pipe transmission, gas lift reverse circulation slag removal, and decompression drilling construction. The top drive adopts full hydraulic drive to drive the drill pipe, the stabilizer stabilizes the drill pipe, drives the bottom cutterhead for excavation, and the spherical tooth hob for rock breaking. Using low-penetration and high-speed drilling method, the rock mass is broken into small pieces of slag, and the mud water circulation is generated by the gas lift method, and the slag is carried to the ground by the high-speed circulating mud water, and then passed through the sedimentation tank, separation station, etc. , separate the rock slag from the mud water, and the mud water enters the recirculation to complete the r...

AI Technical Summary

Problems solved by technology

However, the equipment still has the following problems, which seriously restrict the popularization and application of the equipment, mainly including: 1. The drill pipe is too long and flexible, which limits the improvement of the torque of the cutterhead; 2. The cutterhead has no stabilizing device and is prone to deflection , causing damage to the cutter head, cutter, drill pipe, etc.; 3. Using gravity guidance, drilling is prone to problems such as deflection and reaming; 4. Problems such as collapsed holes, buried drills, and falling objects during drilling are difficult 5. The construction efficiency in hard rock formation is low; 6. The verticality of the sinking well wall is not suitable to be controlled, and the filling quality of the wall thickness is not easy to control.

[0003] At present, the patent application number is "CN201410106744.1" and the patent name is "New Drilling Method Shaft Drilling Rig", which discloses a drilling method shaft drilling rig that improves drilling efficiency. In the process, the drill pipe is still used to transmit the torque, the transmission torque is small, and the construction energy consumption is large

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