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A platform for research: civil engineering, architecture and urbanism
Blocking method for in-situ remediation of polluted land parcel under complex working conditions
The invention discloses a blocking method for in-situ remediation of a polluted land parcel under complex working conditions. The blocking method comprises the following steps that 1, according to thedesign requirement of a safety barrier pile wall, enough safe distance is reserved on the two sides of a structure, the safe distance is larger than 0.5 m, a space is formed in the periphery of structure in a cleaned mode, manual drilling is conducted, firstly, the sharp portion of the lower portion of a drill bit is ground to be flat, the drilling diameter is not smaller than the design diameterof the pile wall, manual slow drilling and sinking are sequentially carried out in batches in an intersecting manner, three continuous drills are achieved in each batch, the three continuous drills sink to the depth exceeding the suspected depth of the structure or depth required by the design of the safety barrier pile wall, if the structure is not encountered, a high-pressure jet grouting process is carried out, and if the structure is encountered, manual drilling is stopped immediately; and the high-pressure jet grouting process comprises the following steps that an access point of a construction machine is the drilling position in the middle of the three continuous manual drills. The invention discloses the method, under the complex working conditions, how to effectively and comprehensively carry out safety barrier pile wall construction is achieved, and therefore a series of problems caused by stagnation construction due to rough construction are avoided.
本发明公开了一种复杂工况下的污染地块原位修复的阻隔方法，第一步，根据安全阻隔桩墙的设计要求，构筑物两边留出足够的安全距离，安全距离大于0.5m，且构筑物的周边清理出空间；人工钻探，首先磨平钻头下部尖锐部位，钻探直径不小于桩墙设计直径，用人工缓慢的钻探下沉，分批次依次相交进行，每一批次为连续的三根，下沉至超过构筑物疑似深度或安全阻隔桩墙设计要求的深度；若未遇到构筑物，即进行高压旋喷工艺，若遇到构筑物，人工钻探立即停止；高压旋喷工艺包括如下步骤：施工机械的接入点为上述连续三个人工钻探的中间一个钻探位置。本发明公开一种复杂工况条件下，如何有效全面进行安全阻隔桩墙施工，从而避免由于粗糙进行引起停滞施工带来的一些列问题。
Blocking method for in-situ remediation of polluted land parcel under complex working conditions
The invention discloses a blocking method for in-situ remediation of a polluted land parcel under complex working conditions. The blocking method comprises the following steps that 1, according to thedesign requirement of a safety barrier pile wall, enough safe distance is reserved on the two sides of a structure, the safe distance is larger than 0.5 m, a space is formed in the periphery of structure in a cleaned mode, manual drilling is conducted, firstly, the sharp portion of the lower portion of a drill bit is ground to be flat, the drilling diameter is not smaller than the design diameterof the pile wall, manual slow drilling and sinking are sequentially carried out in batches in an intersecting manner, three continuous drills are achieved in each batch, the three continuous drills sink to the depth exceeding the suspected depth of the structure or depth required by the design of the safety barrier pile wall, if the structure is not encountered, a high-pressure jet grouting process is carried out, and if the structure is encountered, manual drilling is stopped immediately; and the high-pressure jet grouting process comprises the following steps that an access point of a construction machine is the drilling position in the middle of the three continuous manual drills. The invention discloses the method, under the complex working conditions, how to effectively and comprehensively carry out safety barrier pile wall construction is achieved, and therefore a series of problems caused by stagnation construction due to rough construction are avoided.
本发明公开了一种复杂工况下的污染地块原位修复的阻隔方法，第一步，根据安全阻隔桩墙的设计要求，构筑物两边留出足够的安全距离，安全距离大于0.5m，且构筑物的周边清理出空间；人工钻探，首先磨平钻头下部尖锐部位，钻探直径不小于桩墙设计直径，用人工缓慢的钻探下沉，分批次依次相交进行，每一批次为连续的三根，下沉至超过构筑物疑似深度或安全阻隔桩墙设计要求的深度；若未遇到构筑物，即进行高压旋喷工艺，若遇到构筑物，人工钻探立即停止；高压旋喷工艺包括如下步骤：施工机械的接入点为上述连续三个人工钻探的中间一个钻探位置。本发明公开一种复杂工况条件下，如何有效全面进行安全阻隔桩墙施工，从而避免由于粗糙进行引起停滞施工带来的一些列问题。
Blocking method for in-situ remediation of polluted land parcel under complex working conditions
一种复杂工况下的污染地块原位修复的阻隔方法
MA JUNJUN (author) / HAN ZHENGCHANG (author) / TAO ZHIHUI (author) / BU XULING (author) / ZHU JIAMING (author) / ZHANG SHOUBING (author) / ZHOU XIAO (author)
2021-02-26
Patent
Electronic Resource
Chinese
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