Drill bit device integrating underground water rapid getting and in-situ injection repairing functions

Abstract

The invention provides a drill bit device integrating underground water rapid getting and in-situ injection repairing functions, and relates to the field of environment repair. The drill bit device integrating the underground water rapid getting and in-situ injection repairing functions comprises a drill bit, an injection head and a casing pipe, the drill bit is fixedly mounted on the bottom of the injection head, an injection cavity is formed in the injection head, multiple injection holes are formed in the outer wall of the injection cavity, a limiting device is mounted between the injectionhead and the casing pipe, and a small connection head is mounted on the top of the casing pipe, and is of a middle through structure. The device has the beneficial effects that low-disturbance underground water rapid getting can be carried out on various stratums (including a fine sand layer), meanwhile, the drill bit can be used for carrying out fixed-depth direct pushing type in-situ injection,and according to stratum and pollutant distribution characteristics, the injection depth can be flexibly adjusted.

Description

technical field [0001] The invention mainly relates to the technical field of environmental restoration, in particular to a drill bit device which integrates the functions of fast groundwater intake and in-situ injection restoration. Background technique [0002] Due to the extensive economic development model of our country in the last century, the current environmental pollution problem in our country is becoming more and more serious. Atmospheric and surface water pollution exists on the surface of the earth. It was first paid attention to by people and has been cured and alleviated to a certain extent. However, due to the complex strata below the surface and the slow flow of groundwater, groundwater pollution is slow, difficult to detect, and difficult to treat. If the groundwater is not specially monitored, it is difficult to find it in time. More importantly, groundwater pollution is not easy to eliminate. After the pollution source is found, it should be treated and r...

AI Technical Summary

Problems solved by technology

This traditional groundwater monitoring and repair mode takes a long time, and the large disturbance may cause further diffusion of pollution, especially in the geological conditions of fine sand layer, due to the phenomenon of sand inrush during the well construction process, it is difficult to monitor wells. Due to construction, it is impossible to obtain representative groundwater samples; in addition, the screen width of the groundwater monitoring well pipe is relatively long, and groundwater pollution usually exists at the junction of strata. A preferential channel is formed, which prevents the pollutants in another formation from being effectively repaired, resulting in repeated pollution, reducing the repair efficiency, and increasing the cost of repair

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