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Water-stop material for well construction of groundwater monitoring well and preparation method thereof

A technology of water-stop material and monitoring well, which is applied to the field of preparing the above-mentioned water-stop material for groundwater monitoring well construction and the field of water-stop material used in the process of groundwater monitoring well construction, which can solve the problems of loss of water-stop ability, well pipe deformation, and bending and other problems, to increase the settlement velocity and reduce the cost of well construction

Active Publication Date: 2016-08-17
北京德瑞科森环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (3) Appropriate expansion capacity, the expansion of the water-stop material with a large expansion capacity will squeeze the pipe wall, causing deformation or bending of the well pipe, and the water-stop material with a small expansion capacity is difficult to form a water-resistant layer and loses the ability to stop water ;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Dry some loess, measure its water content to 12%, and grind it into powder. The method of ball clay and bentonite is the same as above, and save it for later use. Take 1000g of loess powder, 60g of ball clay, 80g of bentonite, 5g of cement and 5g of quartz sand and mix them uniformly, spray a certain amount of water to make the mixture wet, put the mixture into an extrusion spheronizer for granulation, and set the extrusion The output speed is 10r / min, and after 24 hours of natural storage under ventilated conditions, the particles with a particle size of 6.0-10mm account for 80%, which is made into a water-stop material for groundwater monitoring well construction.

[0042] Measure its density as 1.6g / cm 3 , the expansion capacity is 2.6mL / g, the water absorption rate is 160% in 2 hours, the average sinking speed in water is 15m / min, and the permeability coefficient after expansion is 4×10 -7 m / s.

Embodiment 2

[0044] Take 1000g of loess powder, 90g of ball clay, 130g of bentonite, 7g of cement and 6g of quartz sand, which are preserved for use, and mix them fully and uniformly, spray a certain amount of water to make the mixture wet, and put the mixture into an extrusion spheronizer for granulation. And set the extrusion speed to 10r / min. After 24 hours of natural storage under ventilated conditions, the particles with a particle size of 6.0-10mm account for 90%, which is made into a water-stop material for groundwater monitoring well construction.

[0045] Measure its density as 1.8g / cm 3 , expansion capacity 3.5mL / g, 2h water absorption rate 190%, average sinking speed in water 16m / min, permeability coefficient after expansion is 8×10 -7 m / s.

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PUM

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Abstract

A water stopping material for underground water monitoring well building is granular, and comprises loess, ball clay, bentonite, cement and quartz sand according to a mass ratio of 1:0.05-0.10:0.07-0.14:0.004-0.007:0.005-0.008, and the density, the expansion capacity, the 2h water absorption capacity, the average sinking speed in water and the penetration coefficient after expansion of the material are 1.5-1.9g / cm<3>, 2-4mL / g, 140-200%, 14-17m / min and 4-10*10<-7>m / s respectively. The invention also discloses a preparation method of the material. The water stopping material for underground water monitoring well building has the characteristics of good water stopping effect, environmental protection and low cost.

Description

technical field [0001] The invention belongs to the technical category of groundwater pollution monitoring, and in particular relates to a water-stop material used in the process of building a groundwater monitoring well. [0002] The invention also relates to a method for preparing the above-mentioned water-stopping material for groundwater monitoring well construction. Background technique [0003] In recent years, the problem of groundwater pollution in my country has been very prominent, which has attracted widespread attention from the society and the public, and the national environmental protection management department has attached great importance to it. Carrying out groundwater pollution monitoring is one of the important tasks in the prevention and control of groundwater pollution in my country. Groundwater sampling technology is the core of groundwater monitoring. , and the construction of scientific and standardized groundwater monitoring wells is an important pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B14/10C04B111/27
Inventor 马志飞袁志业
Owner 北京德瑞科森环保科技有限公司
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