Experiment Study on Cutting for Large Borehole Static Blasting Using Momentum Balance Sealing Device

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Experiment Study on Cutting for Large Borehole Static Blasting Using Momentum Balance Sealing Device
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                        LIU DiLIU Di
Engineering Institute of Engineering Corps.， PLAUST
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YANG TaoYANG Tao
Engineering Institute of Engineering Corps.， PLAUST
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WEN Zun-liWEN Zun-li
Nuclear Industry Nanjing Construction Co., Ltd.
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XU Quan-junXU Quan-jun
Engineering Institute of Engineering Corps.， PLAUST
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LIAO YuLIAO Yu
Engineering Institute of Engineering Corps.， PLAUST
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JIANG NanJIANG Nan
Engineering Institute of Engineering Corps.， PLAUST
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Affiliation:Engineering Institute of Engineering Corps.， PLAUST,Engineering Institute of Engineering Corps.， PLAUST,Nuclear Industry Nanjing Construction Co., Ltd.,Engineering Institute of Engineering Corps.， PLAUST,Engineering Institute of Engineering Corps.， PLAUST,Engineering Institute of Engineering Corps.， PLAUST
Clc Number:U455.41；U455.6
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Abstract:

According to the test results of expanding pressure of large borehole static cracking，the reaction mechanism of large borehole static cracking agent is analysed. Based on momentum balance principle, a new sealing device was invented and has been successfully applied to analogue cutting engineering practice. The hole-spacing approximate calculation formula is modified with test data of cutting practice. The technology has some reference to cutting engineering practice in conditions of small interval intersection.

Key words:large borehole static cracking; sealing device; cutting technology; hole spacing

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Received:May 13,2014
Revised:September 01,2014
Adopted:September 25,2014
Online: November 13,2014
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