CN210917289U - Engineering geology reconnaissance water-pressure test device - Google Patents
Engineering geology reconnaissance water-pressure test device Download PDFInfo
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- CN210917289U CN210917289U CN201921367379.4U CN201921367379U CN210917289U CN 210917289 U CN210917289 U CN 210917289U CN 201921367379 U CN201921367379 U CN 201921367379U CN 210917289 U CN210917289 U CN 210917289U
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Abstract
The utility model discloses an engineering geology reconnaissance water-pressure test device, including the drilling ground and the drilling rod of trompil in the drilling ground, the drilling rod is including supporting the drilling rod, sending water drilling rod and the connector rod body, and the connector rod body is located the support drilling rod and send between the water drilling rod, the connector rod body includes the connecting piece at floral tube and both ends, the connector rod body is connected with junction and the connecting piece that support drilling rod, send water drilling rod, and the both ends outer wall of the connector rod body all is equipped with block water structure, both sides the block water structure joint has the mud to take over. The utility model discloses a drilling rod and block water structure, pump body circulation structure in the cooperation carries out geological stratification exploration on current drilling basis, alleviates intensity of labour, improves experimental precision, improves productivity widely, acquires different crack terranes through multi-order structure, does not need the full hole to test, is equipped with multistage test, goes on at representative rock stratum crack section, does not need to link up between experimental section.
Description
Technical Field
The utility model relates to an engineering geology reconnaissance technical field especially relates to an engineering geology reconnaissance water-pressure test device.
Background
Engineering geology reconnaissance is a specific practice process for completing the general task of 'disaster prevention' in economic construction of engineering geology, and the task is to provide reliable geological basis for engineering construction planning, design and construction on the whole so as to fully utilize favorable natural and geological conditions, avoid or reform unfavorable geological factors and ensure the safety and normal use of buildings.
The method is used for deducing the permeability coefficient of the roller compacted concrete under the condition that the seepage is in the non-constant state in the process of the water compaction test, and a formula.
When the existing pressurized water test equipment is used for pressurized water, the high pressure can cause the cavity and the pipe wall inside the equipment to be greatly pressed, and cracks and some loss can be generated at the joint after long-term use, so that the sealing performance of the whole pressurized water test is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an engineering geology reconnaissance water-pressure test device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a water-pressure test device for engineering geological exploration comprises a drilling foundation and a drilling rod for drilling a hole in the drilling foundation, wherein the drilling rod comprises a supporting drilling rod, a water-feeding drilling rod and a connecting rod body, the connecting rod body is positioned between the supporting drilling rod and the water-feeding drilling rod, the connecting rod body comprises a perforated pipe and connecting pieces at two ends, the connecting parts are connected with the connecting rod body, the connecting parts are connected with the connecting parts at the connecting parts, the outer walls of the two ends of the connecting rod body are respectively provided with a water-blocking structure, the water-blocking structures at two sides are clamped with a slurry connecting pipe, the outer wall of the slurry connecting pipe is connected with a slurry flowmeter, the outer wall at the top end of the water-feeding drilling rod is connected with a water joint in a butt-clamping manner, the outer wall of the water joint is connected with a high-pressure pipe, the other end of, the outer wall of the water pump is connected with a water suction pipe in a butt-clamping manner, and the outer walls of the water suction pipe and the water return pipe are connected with the same water storage barrel.
Preferably, the water blocking structure comprises a base plate and a water stopping rubber plug, and the base plate is clamped on the outer wall of the water stopping rubber plug.
Preferably, the water storage bucket includes staving, vibration dish, clarification stick and cardboard, and the cardboard welding is at the inner wall middle part of staving, the clarification stick equidistance annular distribution is on the inner wall of cardboard, and the output of vibration dish and the bottom looks joint of clarification stick, the outer wall of staving is connected with the blowoff valve to pressing from both sides.
Preferably, the slurry connecting pipe comprises water blocking pipes on two sides and an anti-blocking penetrating rod, and the anti-blocking penetrating rod is inserted in the middle of the inner walls of the two water blocking pipes.
Preferably, the outer wall of the high-pressure pipe is connected with a pressure meter and a flow meter in a butt-clamping manner, and a signal end of the flow meter is electrically connected with a PLC (programmable logic controller).
Preferably, the water pump and the vibration disc are both connected with a switch, and the switch is connected with the PLC through a wire.
The utility model has the advantages that:
1. the water pressure test device is provided with the drilling rod and the water blocking structure and is matched with the upper pump body circulation structure, and the water pumping and water injection test in the existing test has larger limitation in the deep hole test, particularly cannot meet the requirements of the layered test and is generally applied less; the water-pressure test has few constraint conditions, is particularly suitable for deep hole layering tests, is more applied to geological exploration deep hole hydrogeological tests, is more economical and efficient, carries out geological layer exploration on the basis of the existing drilling, reduces the labor intensity, improves the test precision and greatly improves the productivity;
2. the pressurized water test device obtains the permeability or the fracture property of different fractured rock stratums (including fracture structures) through a multi-stage structure, is different from the leakage detection of engineering structures, does not need to carry out the test in a full hole, is provided with multi-stage tests, and is carried out in the fracture section of a representative rock stratum without connection among test sections.
In conclusion, the water pressure test device performs geological layer exploration on the basis of the existing drilling through the drilling drill rod and the water blocking structure in cooperation with the upper pump body circulation structure, reduces labor intensity, improves test precision, greatly improves productivity, obtains different fractured rock layers through the multi-stage structure, does not need to perform full-hole tests, is provided with multi-stage tests, and is performed in fracture sections of representative rock layers without connection among test sections.
Drawings
Fig. 1 is a schematic view of a water pressure test device for engineering geological exploration according to the present invention;
FIG. 2 is a schematic diagram of a slurry connection pipe structure of the engineering geological exploration water-pressure test device provided by the utility model;
fig. 3 is the utility model provides a water storage bucket structural schematic of engineering geology reconnaissance water-pressure test device.
In the figure: the device comprises a drilling foundation 1, a supporting drill rod 2, a connecting piece 3, a floral tube 4, a water blocking structure 5, a water suction tube 6, a water storage barrel 7, a water return tube 8, a water pump 9, a flow meter 10, a pressure meter 11, a water supply drill rod 12, a water joint 13, a slurry flow meter 14, a slurry connecting tube 15, a water supply tube 16, an anti-blocking penetrating rod 17, a water blocking pipe 18, a clarifying rod 19, a blowdown valve 20 and a vibrating disk 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a water-pressure test device for engineering geological exploration, which comprises a drilling foundation 1 and a drilling rod for drilling a hole in the drilling foundation, wherein the drilling rod comprises a supporting rod 2, a water-feeding rod 12 and a connecting rod body, the connecting rod body is positioned between the supporting rod 2 and the water-feeding rod 12, the connecting rod body comprises a perforated pipe 4 and connecting pieces 3 at two ends, the connecting part of the connecting rod body and the supporting rod 2 and the connecting piece 3 of the water-feeding rod 12 are connected, the outer walls of the two ends of the connecting rod body are respectively provided with a water-blocking structure 5, the water-blocking structures 5 at two sides are clamped with a slurry connecting pipe 15, the outer wall of the slurry connecting pipe 15 is connected with a slurry flowmeter 14, the outer wall at the top end of the water-feeding rod 12 is connected with a water joint 13 in a butt-clamping manner, the outer wall of the, and the other side of the three-way valve is provided with a water return pipe 8 in a butt-clamp manner, the outer wall of the water pump 9 is connected with a water suction pipe 6 in a butt-clamp manner, the outer walls of the water suction pipe 6 and the water return pipe 8 are connected with the same water storage barrel 7, the water blocking structure 5 comprises a backing plate and a water blocking rubber plug, the backing plate is clamped on the outer wall of the water blocking rubber plug, the water storage barrel 7 comprises a barrel body, a vibration disk 21, a clarifying rod 19 and a clamping plate, the clamping plate is welded in the middle of the inner wall of the barrel body, the clarifying rod 19 is annularly distributed on the inner wall of the clamping plate at equal intervals, the output end of the vibration disk 21 is clamped with the bottom end of the clarifying rod 19, the outer wall of the barrel body is connected with a blow-down valve 20 in a butt-clamp manner, a slurry connecting pipe 15 comprises two side water blocking pipes 18 and an anti-blocking penetrating rod 17, the water pump 9 and the vibration disc 21 are both connected with switches, and the switches are connected with the PLC through wires.
The working principle is as follows:
1) test section isolation
After the plug is put into a preset hole section and is closed, the maximum pressure of the test is adopted for testing, the water level inside and outside the pipe is measured, the water stopping effect of the plug is checked, in the process of pressure test or water pressing, when the water level in the hole is suddenly increased or the flow is abnormally increased, the plug is indicated to be improperly stopped, and measures such as plug tightening or plug moving are adopted for reinstallation if necessary.
2) Pressure and flow observations
Pressure and flow were observed simultaneously, and were recorded once for typically 10 min. The pressure is kept constant. When the flow rate test result meets one of the following criteria, the test is ended and the final reading is used as the flow rate for calculation, i.e. the water consumption for pressing in.
(a) The difference between the maximum value and the minimum value of four consecutive readings is less than 10% of the minimum final value.
(b) When the flow rate is gradually reduced, the numerical value of the readings in four times is less than 0 and 5L/min.
(c) When the flow rate is gradually increased, four consecutive readings no longer tend to increase.
3) Test equipment installation
The main equipment comprises an upper and lower water-blocking structure 5, a perforated pipe 4, a water-feeding drill pipe 12, a pressure gauge 11, a flow meter 10, a three-way flow regulating valve, a water pump 9 and the like, wherein the flow meter 10 is required to be arranged between the pressure gauge 11 and the three-way valve in order to prevent pressure loss caused by the flow meter 10; the flowmeter 10 and the pressure gauge 11 must be high-pressure gauges and can normally work under the pressure of 1.5 MPa; the accuracy of the pressure gauge 11 is not lower than 2.5 grades, the accuracy of the flow meter 10 is 10-4m3, and the forward flow and the reverse flow can be measured; the length of each of the upper and lower water stopping sections is not less than 7 times of the aperture, and the upper and lower water stopping structures 5 are respectively provided with 5-7 rubber plugs; the water fed drill rod 12 allows the use of a 50mm support rod 2 instead only when the water uptake Q is < 50L/min.
4) Permeability coefficient calculation
The pressurized water result is expressed in unit water absorption (w). The unit water absorption is the ratio of the water leakage per minute of the test section to the product of the section length and the pressure, and the formula is as follows:
w＝(3-33)
in the formula: q, stable flow (L/min) of drilling pressurized water;
s is the total pressure value (N/cm2) applied when water is pressurized in the test section;
l-period length (m).
When the thickness of the bottom of the time section from the water-resisting layer is larger than the length of the test section, calculating the permeability coefficient of the rock stratum according to the following formula:
K＝0,527wlg(3-34)
in the formula: r-radius of the borehole.
When the thickness of the bottom of the test section from the water-resisting layer is smaller than the length of the test section, calculating the permeability coefficient of the rock stratum according to the following formula:
K＝0,527wlg(3-35)
5) data of pressurized water test results
① drilling original log and drilling log;
② groundwater table;
③ flow record sheet;
④ S-Q curve result chart;
⑤ unit water absorption calculation result;
⑥ penetration coefficient calculation results.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides an engineering geology reconnaissance water-pressure test device, includes drilling ground (1) and the drilling rod of trompil in the drilling ground, its characterized in that, the drilling rod is including supporting drilling rod (2), sending water drilling rod (12) and the link body, and the link body is located supporting drilling rod (2) and send between water drilling rod (12), the link body includes connecting piece (3) at floral tube (4) and both ends, the link body is connected with connecting piece (3) with the junction of supporting drilling rod (2), sending water drilling rod (12), and the both ends outer wall of the link body all is equipped with water-blocking structure (5), both sides water-blocking structure (5) joint has mud to take over (15), and the outer wall of mud take over (15) is connected with mud flowmeter (14), the top outer wall butt clamp of sending water drilling rod (12) is connected with water swivel (13), and the outer wall of water swivel (13) is connected with the high-pressure, the other end of high-pressure pipe is connected with the three-way valve, one side outer wall butt clamp of three-way valve is connected with water pump (9), and the opposite side outer wall butt clamp of three-way valve is equipped with wet return (8), the outer wall butt clamp of water pump (9) is connected with water absorption pipe (6), and the outer wall of water absorption pipe (6) and wet return (8) is connected with same water storage bucket (7).
2. The engineering geological survey water-pressure test device according to claim 1, wherein the water-blocking structure (5) comprises a backing plate and a water-stopping rubber plug, and the backing plate is clamped on the outer wall of the water-stopping rubber plug.
3. The engineering geological survey water-pressure test device according to claim 1, wherein the water storage barrel (7) comprises a barrel body, a vibrating disk (21), a clarifying rod (19) and clamping plates, the clamping plates are welded in the middle of the inner wall of the barrel body, the clarifying rod (19) is annularly distributed on the inner wall of the clamping plates at equal intervals, the output end of the vibrating disk (21) is clamped with the bottom end of the clarifying rod (19), and a drain valve (20) is connected to the outer wall of the barrel body in a clamping mode.
4. The engineering geological survey water-pressure test device according to claim 1, wherein the slurry connecting pipe (15) comprises two side water-blocking pipes (18) and an anti-blocking penetrating rod (17), and the anti-blocking penetrating rod (17) is inserted in the middle of the inner walls of the two water-blocking pipes (18).
5. The engineering geological survey water-pressure test device according to claim 1, characterized in that the outer wall of the high-pressure pipe is connected with a pressure gauge (11) and a flow meter (10) in a clamping manner, and the signal end of the flow meter (10) is electrically connected with a PLC controller.
6. The engineering geological survey water-pressure test device according to claim 1, wherein the water pump (9) and the vibrating plate (21) are connected with a switch, and the switch is connected with a PLC controller through a wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367379.4U CN210917289U (en) | 2019-08-22 | 2019-08-22 | Engineering geology reconnaissance water-pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367379.4U CN210917289U (en) | 2019-08-22 | 2019-08-22 | Engineering geology reconnaissance water-pressure test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210917289U true CN210917289U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921367379.4U Expired - Fee Related CN210917289U (en) | 2019-08-22 | 2019-08-22 | Engineering geology reconnaissance water-pressure test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210917289U (en) |
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2019
- 2019-08-22 CN CN201921367379.4U patent/CN210917289U/en not_active Expired - Fee Related
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Granted publication date: 20200703 |
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