Anchoring and anti-clogging drill rod for coal mine floor

Abstract

An anchoring and anti-clogging drill rod for a coal mine floor and methods thereof are provided. The anchoring and anti-clogging drill rod includes a hollow drill pipe and a hollow sleeve configured inside the hollow drill pipe. A front joint is configured at a front end of the hollow drill pipe. A back joint is configured at a back end of the hollow drill pipe. The hollow sleeve is wound with a spiral connection line in a direction opposite to a rotation direction of the anchoring and anti-clogging drill rod during drilling. A spiral-shaped space is formed between the spiral connection line and an inner chamber of the hollow drill pipe.

What is claimed is: 
     
         1 . An anchoring and anti-clogging drill rod for a coal mine floor, comprising:
 a hollow drill pipe; and   a hollow sleeve configured inside the hollow drill pipe,   wherein:   a front joint is configured at a front end of the hollow drill pipe,   a back joint is configured at a back end of the hollow drill pipe,   the hollow sleeve is wound with a spiral connection line in a direction opposite to a rotation direction of the anchoring and anti-clogging drill rod during drilling, and   a spiral-shaped space is formed between the spiral connection line and an inner chamber of the hollow drill pipe.   
     
     
         2 . The anchoring and anti-clogging drill rod according to  claim 1 , wherein:
 a waterproof insertion slot is configured at a back end of the hollow sleeve for connecting a connector or the hollow sleeve of another anchoring and anti-clogging drill rod.   
     
     
         3 . The anchoring and anti-clogging drill rod according to  claim 1 , wherein:
 the front joint is compatible with the back joint for connecting two anchoring and anti-clogging drill rods in a head-to-tail.   
     
     
         4 . The anchoring and anti-clogging drill rod according to  claim 3 , wherein:
 the front joint is configured as a bolt with threads on an outer surface; and   the back joint is configured as a bolt hole with threads in an inner wall.   
     
     
         5 . The anchoring and anti-clogging drill rod according to  claim 1 , the hollow drill pipe further comprising:
 a first wrench-compatible segment configured at a location connecting the front joint; and   a second wrench-compatible segment configured at a location connecting the back joint.   
     
     
         6 . The anchoring and anti-clogging drill rod according to  claim 5 , wherein:
 an outer surface of the wrench-compatible segments has a prism shape or a cuboid shape.   
     
     
         7 . A method for using an anchoring and anti-clogging drill rod for a coal mine floor, comprising:
 configuring the anchoring and anti-clogging drill rod, including a hollow drill pipe and a hollow sleeve configured inside the hollow drill pipe, by a process including:
 connecting a back joint at a back end of the hollow drill pipe with a drill machine, 
 connecting a front joint at a front end of the hollow drill pipe with a drill head, and 
 connecting the hollow sleeve with a pump, 
   injecting pressured clean water to an empty space between the hollow drill pipe and the hollow sleeve, wherein the hollow sleeve is configured such that the clean water follows along a spiral connection line wound around an outer surface of the hollow sleeve and is transported to the drill head for cleaning; and   pumping dirty water from the drill head through the hollow sleeve for waste discharge.   
     
     
         8 . The method according to  claim 7 , wherein:
 a waterproof insertion slot is configured at a back end of the hollow sleeve for connecting to the pump or the hollow sleeve of another anchoring and anti-clogging drill rod.   
     
     
         9 . The method according to  claim 7 , wherein the step of installing the anchoring and anti-clogging drill rod further comprises:
 connecting two anchoring and anti-clogging drill rods in a head-to-tail manner by connecting the front joint with the back joint.   
     
     
         10 . The method according to  claim 9 , wherein:
 the front joint is configured as a bolt with threads on an outer surface; and   the back joint is configured as a bolt hole with threads in an inner wall.   
     
     
         11 . The method according to  claim 7 , further comprising:
 tightening the anchoring and anti-clogging drill rod with a wrench using a first wrench-compatible segment configured at a location connecting the front joint; or   tightening the anchoring and anti-clogging drill rod with a wrench using a second wrench-compatible segment configured at a location connecting the back joint.   
     
     
         12 . The method according to  claim 11 , wherein:
 an outer surface of the wrench-compatible segments has a prism shape or a cuboid shape.