Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Replacement treatment method for soft soil interlayer in foundation
The invention discloses a method for replacing a soft soil interlayer in a foundation, which comprises the following steps of: drilling holes in a to-be-treated foundation area, including a central drill hole positioned at the central position and peripheral drill holes distributed around the central drill hole; then the drill bit is replaced with a high-pressure jet drill bit, the high-pressure jet drill bit is placed in the soft soil interlayer in the center drill hole, high-speed and high-pressure water flow jetted by the high-pressure jet drill bit is used for cutting a soil body of the soft soil interlayer within a certain range, and the soil body is stirred and diluted to be in a flowable slurry state; then a water stop plug is arranged on the upper portion of the protective pipe of the center drill hole, a guide pipe of the water stop plug is connected with a started air compressor or a high-pressure water pump on the ground through a high-pressure connecting pipe, high-pressure air or water enters the protective pipe on the lower portion of the water stop plug through the guide pipe of the water stop plug, and slurry in the soft soil interlayer is driven to be discharged along the surrounding drill holes nearby; and a local cavity is formed in the soft soil interlayer, and the backfill soil layer on the upper portion collapses to fill the cavity, so that the soft soil interlayer is subjected to replacement treatment.
本发明公开了一种地基中软土夹层置换方法，在待处理的地基区域进行钻孔，包括一个位于中心位置的中心钻孔和分布在该中心钻孔周围的周边钻孔；然后将钻头更换为高压喷射钻头，将高压喷射钻头置入中心钻孔中的软土夹层，利用高压喷射钻头喷射出来的高速、高压水流切割一定范围的软土夹层的土体，将土体搅拌、稀释到可流动的泥浆状态；然后在中心钻孔的护管上部设置止水栓塞，将止水栓塞的导管通过高压连接管连接地面上的开启空压机或高压水泵，使高压空气或水通过止水栓塞的导管进入止水栓塞下部的护管内，驱动软土夹层中的泥浆沿附近的周边钻孔排出，使软土夹层位置形成局部空洞，上部的回填土层会塌落回填空洞，使得软土夹层得以置换处理。
Replacement treatment method for soft soil interlayer in foundation
The invention discloses a method for replacing a soft soil interlayer in a foundation, which comprises the following steps of: drilling holes in a to-be-treated foundation area, including a central drill hole positioned at the central position and peripheral drill holes distributed around the central drill hole; then the drill bit is replaced with a high-pressure jet drill bit, the high-pressure jet drill bit is placed in the soft soil interlayer in the center drill hole, high-speed and high-pressure water flow jetted by the high-pressure jet drill bit is used for cutting a soil body of the soft soil interlayer within a certain range, and the soil body is stirred and diluted to be in a flowable slurry state; then a water stop plug is arranged on the upper portion of the protective pipe of the center drill hole, a guide pipe of the water stop plug is connected with a started air compressor or a high-pressure water pump on the ground through a high-pressure connecting pipe, high-pressure air or water enters the protective pipe on the lower portion of the water stop plug through the guide pipe of the water stop plug, and slurry in the soft soil interlayer is driven to be discharged along the surrounding drill holes nearby; and a local cavity is formed in the soft soil interlayer, and the backfill soil layer on the upper portion collapses to fill the cavity, so that the soft soil interlayer is subjected to replacement treatment.
本发明公开了一种地基中软土夹层置换方法，在待处理的地基区域进行钻孔，包括一个位于中心位置的中心钻孔和分布在该中心钻孔周围的周边钻孔；然后将钻头更换为高压喷射钻头，将高压喷射钻头置入中心钻孔中的软土夹层，利用高压喷射钻头喷射出来的高速、高压水流切割一定范围的软土夹层的土体，将土体搅拌、稀释到可流动的泥浆状态；然后在中心钻孔的护管上部设置止水栓塞，将止水栓塞的导管通过高压连接管连接地面上的开启空压机或高压水泵，使高压空气或水通过止水栓塞的导管进入止水栓塞下部的护管内，驱动软土夹层中的泥浆沿附近的周边钻孔排出，使软土夹层位置形成局部空洞，上部的回填土层会塌落回填空洞，使得软土夹层得以置换处理。
Replacement treatment method for soft soil interlayer in foundation
一种地基中软土夹层置换处理方法
YU JIAN (Autor:in) / LIU ZHAO (Autor:in) / SUN WENHAO (Autor:in) / LIU CHENGZHOU (Autor:in) / ZHANG GUOLIANG (Autor:in) / HOU JINFANG (Autor:in) / YU ZHIFA (Autor:in) / ZHUGE AIJUN (Autor:in)
09.08.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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