Method for forming piles in situ

Claim 1

THE METHOD FOR FORMING PILES IN THE EARTH WHICH CONSISTS IN DRILLING A HOLE IN THE EARTH BY TURNING AN AUGER TYPE DRILL HAVING FLIGHTS AND SINKING THE LOWER END THEREOF TO A DESIRED DEPTH BELOW THE SURFACE OF THE EARTH, THEREAFTER PROGRESSIVELY WITHDRAWING THE DRILL FROM THE HOLE, TOGETHER WITH THE EARTH IN ITS FLIGHTS, BY APPLYING A LIFTING FORCE TO THE DRILL THEREBY FORMING BENEATH THE DRILL A CAVITY OF A VOLUME WHICH PROGRESSIVELY INCREASES AS THE DRILL IS WITHDRAWN, FORCING A FLOWABLE PILEFORMING SUBSTANCE INTO THE CAVITY RESULTING BENEATH THE UPWARDLY MOVING LOWER END TO PROGRESSIVELY FILL SAID CAVITY AND SIMULTANEOUSLY MEASURING THE RESPECTIVE FLOW VOLUME RATE OF THE SUBSTANCE BEING PROVIDED TO THE LOWER END OF THE DRILL, FURTHER SIMULTANEOUSLY AND CONTINUOUSLY MEASURING THE DEPTH OF SAID END OF THE DRILL BELOW THE SURFACE WHILE MEASURING THE RESPECTIVE PRESSURE OF THE FLOWABLE SUBSTANCE AT THE PARTICULAR LEVEL OF SAID MEASURED DEPTH, AND BASED ON THE RESPECTIVE MEASURED DEPTH, VARYING SAID FLOW VOLUME RATE OF SAID SUBSTANCE UNTIL THE MEASURED PRESSURE CHANGES TO SUBSTANTIALLY MATCH THAT OF A PRE-SELECTED AS DEMANDED FOR SAID RESPECTIVE MEASURED DEPTH ON A PRESSURE GRADIENT PREDETERMINED FOR SUCCESSIVE LEVELS OF DEPTH MEASURED BELOW THE SURFACE OF THE EARTH, AND REMOVING SAID DRILL FROM SAID HOLE AND LEAVING SAID FLOWABLE SUBSTANCE TO BE HARDENED IN THE CAVITY AND PROVIDE A SOLID LOAD-BEARING PILE.

Claim 2

THE METHOD FOR FORMING PILES IN THE EARTH WHICH CONSISTS IN DRILLING A HOLE IN THE EARTH BY TURNING AN AUGER TYPE DRILL HAVING FLIGHTS AND SINKING THE LOWER END THEREOF TO A DESIRED DEPTH BELOW THE SURFACE OF THE EARTH, THEREAFTER PROGRESSIVELY WITHDRAWING THE DRILL FROM THE HOLE, TOGETHER WITH THE EARTH IN ITS FLIGHTS, BY APPLYING A LIFTING FORCE TO THE DRILL THEREBY FORMING BENEATH THE DRILL A CAVITY OF A VOLUME WHICH PROGRESSIVELY INCREASES AS THE DRILL IS WITHDRAWN, FORCING A FLOWABLE PILEFORMING SUBSTANCE INTO THE CAVITY RESULTING BENEATH THE UPWARDLY MOVING LOWER END TO PROGRESSIVELY FILL SAID CAVITY AND SIMULTANEOUSLY MEASURING THE RESPECTIVE FLOW VOLUME RATE OF THE SUBSTANCE BEING PROVIDED TO THE LOWER END OF THE DRILL, FURTHER SIMULTANEOUSLY AND CONTINUOUSLY MEASURING THE DEPTH OF SAID END OF THE DRILL BELOW THE SURFACE WHILE MEASURING THE RESPECTIVE PRESSURE OF THE FLOWABLE SUBSTANCE AT THE PARTICULAR LEVEL OF SAID MEASURED DEPTH, AND BASED ON THE RESPECTIVE MEASURED DEPTH, VARYING SAID FLOW VOLUME RATE OF SAID SUBSTANCE UNTIL THE MEASURED PRESSURE CHANGES TO SUBSTANTIALLY MATCH THAT OF A PRE-SELECTED AS DEMANDED FOR SAID RESPECTIVE MEASURED DEPTH ON A PRESSURE GRADIENT PREDETERMINED FOR SUCCESSIVE LEVELS OF DEPTH MEASURED BELOW THE SURFACE OF THE EARTH, AND REMOVING SAID DRILL FROM SAID HOLE AND LEAVING SAID FLOWABLE SUBSTANCE TO BE HARDENED IN THE CAVITY AND PROVIDE A SOLID LOAD-BEARING PILE.