Simple test and solution method of hydrogeological parameters of aquifer under curtain grouting condition
A hydrogeological and curtain grouting technology, which is applied in earthwork drilling, wellbore/well components, buildings, etc., can solve problems such as secondary damage of grouting curtain, groundwater seepage field and stratum stress field fluctuation, etc., and the method is simple , Strong application value, easy to widely promote the effect
Inactive Publication Date: 2021-05-18
临沂矿业集团菏泽煤电有限公司 +3
View PDF14 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In many projects, the pumping test is often a common method to determine the hydrogeological parameters of the aquifer. However, the large-drawdown pumping test before the water-stop curtain will often cause large fluctuations in the groundwater seepage field and the formation stress field, and induce grouting. "Secondary Destruction" of the Curtain
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 1
[0062] Such as figure 1 As shown, this embodiment provides a simple test and solution method for the hydrogeological parameters of the aquifer 2 under the condition of curtain grouting, which is used for the curtain grouting project of the Neogene bottom aquifer 2 in a shaft shaft of a coal mine. The diameter of the borehole 1 is 190mm, the diameter of the filter pipe 4 is 139.7±6.2mm, and the length of the filter pipe 4 is 32.5m in the aquifer 2 at the bottom of the Neogene system. The lithology of Neogene bottom aquifer 2 from top to bottom is sandy clay (4.25m thick), coarse sand (18.0m thick), medium sand (5.85m thick), clay gravel (4.40m thick), the total thickness It is 32.5m.
[0063] 1) Wash the borehole 1 with clean water for 28 hours;
[0064] 2) Initial water level H of observation hole 1 0 is -111.47m, and determine the initial water level position, the initial water level H 0 in filter tube 4;
[0065] 3) Start the DIVER water level sensor 5, set the observat...
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 provides a simple method for testing and solving the hydrogeological parameters of the aquifer under the condition of curtain grouting. The method comprises the following steps: 1) drilling a hole and washing the hole; 2) observing the initial water level of the hole , to determine the initial water level H 0 ; 3) start the water level sensor; 4) put an object with a fixed volume into the water in the hole; 5) observe the water level in the hole according to the interval of the observation time set in the step 3), until The water level returns to the initial water level H 0 , the test ends; 6) Calculate the borehole water level drawdown value s according to the water level observed in step 5), and use the water level drawdown value s and the corresponding observation time t to solve the hydrogeological parameters. The invention determines the hydrogeological parameters near the borehole by observing the law of recovery of the borehole water level with time and fitting with the standard curve. It provides a more reliable basis for parameter design and construction of grouting curtain engineering.
Description
technical field [0001] The invention relates to the technical field of construction engineering, in particular to a method for simply testing and solving hydrogeological parameters of an aquifer under the condition of curtain grouting in which the shaft is deviated. Background technique [0002] As the "throat" of safe production in coal mines, the vertical shaft shaft is not only the "main channel" for transporting coal resources, but also the "life hub" for underground workers to connect with the ground. Since the first shaft deflection and splitting accident occurred in the auxiliary shaft of Zhangshuanglou Coal Mine in Xuzhou City in 1987, more than a hundred similar shaft deflection and rupture accidents have occurred in East China, such as Xuhuai and other mining areas. Threatening mine safety production and causing huge economic losses. In order to ensure the safety of shaft shafts, curtain grouting is widely used to reinforce shafts and surrounding rocks to enhance ...
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 Patents(China)
IPC IPC(8): E21B49/00E21B47/047E21D5/04
CPCE21B49/00E21D5/04
Inventor 李存禄秦晓强周忠建赵仁宝端木令蒙程桦许光泉姚直书彭世龙张海涛余大有孙家应荣传新王晓健蔡海兵李华
Owner 临沂矿业集团菏泽煤电有限公司