Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for excavating foundation pit in water-rich sand layer
The invention discloses a method for excavating a foundation pit in a water-rich sand layer. The method is characterized by including the steps that step one, water leakage of an underground diaphragm wall is detected; step two, geological radar scanning is carried out, and cavities at the bottom are prevented; step three, a steel plate is blocked at a weak underground diaphragm wall joint position, and the weak position of a wall joint is prevented from spewing; step four, high-pressure jet grouting piles are adopted at the joint positions of the underground diaphragm walls for wall joint water stopping; step five, WSS grouting reinforcement is conducted on the joints of the underground diaphragm walls with risks in the excavation process; step six, a draining and pressure-reducing dewatering well is additionally arranged outside the pit; step seven, a support is erected in time, slope excavation is carried out, and a slotting and crack detection system is strictly executed; and step eight, field construction monitoring is enhanced, and foundation pit excavation is guided through monitoring data.
一种富水砂层中基坑开挖方法，其特征在于，包括如下步骤：步骤一、地连墙渗漏水检测；步骤二、进行地质雷达扫描，预防底部存在空洞；步骤三、在薄弱的地连墙接缝位置封堵钢板，避免墙缝薄弱位置发生喷涌；步骤四、地连墙接缝位置采用高压旋喷桩进行墙缝止水；步骤五、开挖过程中有风险的地连墙接缝处WSS注浆加固补强；步骤六、坑外增设疏干兼降压降水井；步骤七、及时架设支撑，进行放坡开挖，严格执行掏槽检缝制度；步骤八、加强现场施工监测，通过监测数据指导基坑开挖。
Method for excavating foundation pit in water-rich sand layer
The invention discloses a method for excavating a foundation pit in a water-rich sand layer. The method is characterized by including the steps that step one, water leakage of an underground diaphragm wall is detected; step two, geological radar scanning is carried out, and cavities at the bottom are prevented; step three, a steel plate is blocked at a weak underground diaphragm wall joint position, and the weak position of a wall joint is prevented from spewing; step four, high-pressure jet grouting piles are adopted at the joint positions of the underground diaphragm walls for wall joint water stopping; step five, WSS grouting reinforcement is conducted on the joints of the underground diaphragm walls with risks in the excavation process; step six, a draining and pressure-reducing dewatering well is additionally arranged outside the pit; step seven, a support is erected in time, slope excavation is carried out, and a slotting and crack detection system is strictly executed; and step eight, field construction monitoring is enhanced, and foundation pit excavation is guided through monitoring data.
一种富水砂层中基坑开挖方法，其特征在于，包括如下步骤：步骤一、地连墙渗漏水检测；步骤二、进行地质雷达扫描，预防底部存在空洞；步骤三、在薄弱的地连墙接缝位置封堵钢板，避免墙缝薄弱位置发生喷涌；步骤四、地连墙接缝位置采用高压旋喷桩进行墙缝止水；步骤五、开挖过程中有风险的地连墙接缝处WSS注浆加固补强；步骤六、坑外增设疏干兼降压降水井；步骤七、及时架设支撑，进行放坡开挖，严格执行掏槽检缝制度；步骤八、加强现场施工监测，通过监测数据指导基坑开挖。
Method for excavating foundation pit in water-rich sand layer
一种富水砂层中基坑开挖方法
CHEN DONG (Autor:in) / XIANG LONGSHENG (Autor:in) / GAO SHUNYU (Autor:in) / CEN LIHUI (Autor:in) / WANG ZHENLONG (Autor:in) / HU XUEYU (Autor:in) / LI CHONG (Autor:in)
12.11.2021
Patent
Elektronische Ressource
Chinesisch
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