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Diameter-variable multi-layer bidirectional mutual shearing stirring drilling machine and construction method
The invention discloses a variable-diameter multilayer bidirectional mutual-shearing stirring drilling machine which comprises a drilling machine rack, a drill rod assembly, a power unit, a bidirectional mutual-shearing stirring drill bit, a rotary spraying variable-diameter unit and a grouting unit. The bidirectional mutual-shearing stirring drill bit performs bidirectional mutual-shearing stirring under the driving action of the power unit, and the power unit is connected to the drilling machine rack in a suspended mode; a high-pressure rotary jet grouting channel of the rotary jet reducing unit is arranged in an inner drill rod, a high-pressure rotary jet grouting nozzle is arranged between an outer stirring frame of the two-way mutual shearing stirring drill bit and a drilling and digging blade, curing agent grout passes through the high-pressure rotary jet grouting channel through a high-pressure rotary jet faucet to reach the high-pressure rotary jet nozzle to be jetted out, and under the action of the power unit, the curing agent grout is sprayed out through the high-pressure rotary jet grouting nozzle. Multi-layer two-way mutual shearing stirring and rotary high-pressure jetting are achieved, and the expanding two-way stirring pile is formed. The invention further provides a variable-diameter multi-layer bidirectional mutual shear stirring construction method. The variable diameter amount of the pile can be accurately adjusted through the high-pressure grouting pump, and variable diameter grouting can be achieved at the designed pile section through construction parameter control.
本发明公开一种可变径的多层双向互剪搅拌钻机，包括钻机机架、钻杆组件、动力单元、双向互剪搅拌钻头、旋喷变径单元、注浆单元；双向互剪搅拌钻头在动力单元的驱动作用下双向互剪搅拌，动力单元悬挂连接在钻机机架上；旋喷变径单元的高压旋喷注浆通道设于内钻杆中，高压旋喷喷浆口设于双向互剪搅拌钻头的外搅拌框架与钻掘叶片之间，固化剂浆液通过高压旋喷水龙头经高压旋喷注浆通道至高压旋喷喷口射出，在动力单元作用下，实现多层双向互剪搅拌及旋转高压喷射，形成扩径双向搅拌桩。本发明还提供一种可变径的多层双向互剪搅拌施工方法。本发明通过高压注浆泵可精确调节桩的变径量，通过施工参数控制还可以在设计桩段实现变径注浆。
Diameter-variable multi-layer bidirectional mutual shearing stirring drilling machine and construction method
The invention discloses a variable-diameter multilayer bidirectional mutual-shearing stirring drilling machine which comprises a drilling machine rack, a drill rod assembly, a power unit, a bidirectional mutual-shearing stirring drill bit, a rotary spraying variable-diameter unit and a grouting unit. The bidirectional mutual-shearing stirring drill bit performs bidirectional mutual-shearing stirring under the driving action of the power unit, and the power unit is connected to the drilling machine rack in a suspended mode; a high-pressure rotary jet grouting channel of the rotary jet reducing unit is arranged in an inner drill rod, a high-pressure rotary jet grouting nozzle is arranged between an outer stirring frame of the two-way mutual shearing stirring drill bit and a drilling and digging blade, curing agent grout passes through the high-pressure rotary jet grouting channel through a high-pressure rotary jet faucet to reach the high-pressure rotary jet nozzle to be jetted out, and under the action of the power unit, the curing agent grout is sprayed out through the high-pressure rotary jet grouting nozzle. Multi-layer two-way mutual shearing stirring and rotary high-pressure jetting are achieved, and the expanding two-way stirring pile is formed. The invention further provides a variable-diameter multi-layer bidirectional mutual shear stirring construction method. The variable diameter amount of the pile can be accurately adjusted through the high-pressure grouting pump, and variable diameter grouting can be achieved at the designed pile section through construction parameter control.
本发明公开一种可变径的多层双向互剪搅拌钻机，包括钻机机架、钻杆组件、动力单元、双向互剪搅拌钻头、旋喷变径单元、注浆单元；双向互剪搅拌钻头在动力单元的驱动作用下双向互剪搅拌，动力单元悬挂连接在钻机机架上；旋喷变径单元的高压旋喷注浆通道设于内钻杆中，高压旋喷喷浆口设于双向互剪搅拌钻头的外搅拌框架与钻掘叶片之间，固化剂浆液通过高压旋喷水龙头经高压旋喷注浆通道至高压旋喷喷口射出，在动力单元作用下，实现多层双向互剪搅拌及旋转高压喷射，形成扩径双向搅拌桩。本发明还提供一种可变径的多层双向互剪搅拌施工方法。本发明通过高压注浆泵可精确调节桩的变径量，通过施工参数控制还可以在设计桩段实现变径注浆。
Diameter-variable multi-layer bidirectional mutual shearing stirring drilling machine and construction method
一种可变径的多层双向互剪搅拌钻机及施工方法
LIU ZHONG (author) / LAN WEI (author) / LI GUOMIN (author) / YANG NINGYE (author) / YU TAOXI (author) / WANG ZHANCHOU (author) / CHEN TIANXIONG (author) / ZHANG CHUFU (author)
2023-07-04
Patent
Electronic Resource
Chinese
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