Deep foundation pit gas energy presplitting construction method

The invention relates to the technical field of gas fracturing, and discloses a deep foundation pit gas energy presplitting construction method which comprises the following steps: S1, positioning and punching; s2, equipment is installed; s3, injecting liquid oxygen; s4, applying pressure: triggerin...

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Bibliographische Detailangaben
Hauptverfasser:	XU ZHONGLIANG, SHI AIJUN, LI HAOLONG, YANG YOUPING, FAN XINYANG, ZUO SHUANG, CHEN KUI, YANG BODONG, WANG QINSHAN, XIAO YUGENG, FU XIAOQI, XIA LONG, CHEN BIN, ZHANG MING, REN ZHANXIAO, LI YUNING, LUO GUANXIAO, YUAN JIANFEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AMMUNITION BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HEATING HYDRAULIC ENGINEERING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to the technical field of gas fracturing, and discloses a deep foundation pit gas energy presplitting construction method which comprises the following steps: S1, positioning and punching; s2, equipment is installed; s3, injecting liquid oxygen; s4, applying pressure: triggering a resistance wire, combusting the combustible medium, rapidly developing the combustible medium from combustion to deflagration under the combustion-supporting effect of liquid oxygen, enabling the liquid oxygen which does not participate in combustion to instantaneously generate phase change due to the generated heat, enabling the liquid oxygen to be changed from liquid state to gas state, and enabling the gas to instantaneously expand; s5, breaking the rocks: diffusing the rocks to the periphery by a breaking unit, and breaking the surrounding rocks; and S6, broken stone cleaning. The rock drilling head is arranged on the side wall of the fracturing pipe, so that when high-pressure gas is generated in the fract