A Method for Exploring the Flow Network of Bedrock Fissure Groundwater System
A groundwater system and fissure technology, which can be used in earth-moving drilling, undisturbed core extraction, wellbore/well components, etc., and can solve problems such as uncertainty, inability to simulate water-bearing systems in fissures, and order-of-magnitude errors.
Active Publication Date: 2021-07-06
UNIV OF JINAN
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] There are main defects: first, the numerical simulation and analytical method are obtained by solving the generalized hydrogeological conditions, and the hydrogeological parameters necessary for calculating the flow network are themselves calculated values, and there are often orders of magnitude errors, so the flow network obtained by theoretical calculation It is only a schematic diagram, and there are great uncertainties; the second indoor experiment is restricted by the time scale and spatial scale, and the scale effect of the indoor experimental method is huge, especially the indoor physical experiment, which is currently unable to simulate the heterogeneous fracture water content in the field system, so the indoor experiment method is divorced from the actual conditions of nature
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
[0049] A method for exploring the flow network of a bedrock fissure groundwater system, comprising the following steps:
[0050] Step 1: Select a drilling point according to the needs of the actual research work, and then use the rotary drilling method to drill, and each time the footage is greater than 0.5 meters and less than 2 meters. The drill bit diameter can be selected as 127mm or 168mm as a specific embodiment, and the drill bit described in this embodiment adopts 127mm.
[0051] Step 2: After the first drilling, record the length L1 of the first drilling, and put in the stick to take the core.
[0052] The third step: measure the length M1 of the rock core taken out in the second step, and calculate the rock core recovery rate, i.e. M1 / L1, if the recovery rate is lower than 70%, then go into the drilling tool again to fish out the remaining rock core, and then lift Drill, and measure the mixed water level T1 after lifting the drill by the water level tester 5 and the...
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 method for exploring the flow network of bedrock fissures and groundwater systems. The method is based on the hydrogeological exploration of the bedrock area, and at the same time of drilling, the pressure measuring water head after each drilling hole is measured one by one. Obtain the observation data of the piezometric head value at different depths in the exploration hole, and then draw the groundwater flow network, analyze and calculate the groundwater runoff intensity at different depths. This method is based on the measured water head values at different depths in the borehole, does not need artificial generalization of geological conditions, does not have calculation errors, completely eliminates the errors of previous numerical calculations or laboratory experiments, and has reliable accuracy. Actually, scientifically. In addition, the method can carry out water level observation with the help of geological drilling, or hydrogeological, or engineering geological drilling work, without investing in special groundwater flow network survey, which saves time, improves efficiency, and has high technical and economical efficiency.
Description
technical field [0001] The invention relates to the field of groundwater science and engineering technology, in particular to a method for exploring the flow network of a fissure groundwater system in a brittle bedrock formation. Background technique [0002] Human life and production are inseparable from water resources. The large-scale exploitation and utilization of groundwater and the treatment of many hydrogeological problems often require the identification of groundwater seepage field characteristics and the drawing of regional groundwater system flow network diagrams to solve these problems. Traditional Groundwater System Flow Nets Figure 1 Generally, the schematic diagrams are drawn by means of numerical simulation, analytical solution, or indoor experiments. The existing methods not only need to invest a lot of exploration work to obtain relevant data, but also the drawn flow network diagram is only a schematic diagram with errors from the actual situation. . [...
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): E21B49/00E21B25/00E21B47/04E21B33/12
CPCE21B25/00E21B33/12E21B47/04E21B49/003
Inventor 邢立亭迟光耀李常锁邢学睿赵振华康凤新李江柏侯新宇冯全霖
Owner UNIV OF JINAN