Water retention method with artificially modified groundwater chemical characteristics and used for promoting repair of water-bearing stratum
A technology of chemical characteristics and chemical modifiers, applied in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of small macro size, difficult to pour successfully, etc., to achieve strong practicability, improve water quality, use method scientific reliable effect
Active Publication Date: 2019-01-15
CHINA UNIV OF MINING & TECH
View PDF6 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:
[0034] The method for artificially modifying the groundwater chemical characteristics to promote the repair of the aquifer according to the present invention comprises the following steps: when there is a water gushing in the well, it is determined whether a chemical modifier needs to be used to recharge the borehole according to whether there is an aquifer within the height range of the water-conducting fissure zone , if necessary, construct chemical modifier recharge boreholes on the surface corresponding to the boundary and middle of the mining area, and select appropriate chemical modifiers from chemical modifier recharge boreholes according to the chemical characteristics of mining damage to aquifer water storage Recharge, using the chemical modifier recharged into the aquifer to chemically react with groundwater anions and cations to form sediments that...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a water retention method with artificially modified groundwater chemical characteristics and used for promoting the repair of a water-bearing stratum. According to the development characteristics and the distribution range of a mining-induced water conduction fracture in the overburden rock, a chemical modifier recharging hole is formed in the boundary of the mining area and the middle of the mining area corresponding to the surface construction chemical modifier respectively. After that, a proper chemical modifier is selected in a targeted manner according to the chemical characteristics such as the pH value and the hardness of the water body of the water-bearing stratum which is damaged during the mining process. Meanwhile, a precipitate which is generated duringthe reaction of the chemical modifier poured into the water-bearing stratum together with anions and cations contained in the underground water is utilized for effectively blocking off pores / fracturesin the rock body of the water-bearing stratum. The method is simple in steps, convenient to use, safe and environmentally friendly. By adopting the method, the in-situ remediation of the coal mining-damaged water-bearing stratum is realized.
Description
technical field [0001] The invention relates to a method for repairing underground aquifers and protecting water resources, in particular to an artificial modification of groundwater chemical characteristics suitable for use in the fields of mining-damaged bedrock aquifer restoration, water resource protection, and underground water hazard prevention and control in coal mining areas Water retention methods to promote aquifer restoration. Background technique [0002] Underground coal mining will cause the movement and destruction of the overlying rock, thereby forming water-conducting fissures in the overlying rock; The occurrence of this phenomenon will not only cause the groundwater level to drop and deteriorate the surface ecological environment, but also easily lead to underground water inrush accidents when the aquifer is rich in water and the water-conducting fractures are well developed. , posing a threat to the safety of personnel and property. Therefore, how to ta...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/13E21B43/22
CPCE21B33/13E21B43/16
Inventor 鞠金峰李全生许家林毛小松
Owner CHINA UNIV OF MINING & TECH