CN211080391U - Karst water intake system for side wall of falling cavity - Google Patents
Karst water intake system for side wall of falling cavity Download PDFInfo
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- CN211080391U CN211080391U CN201921927341.8U CN201921927341U CN211080391U CN 211080391 U CN211080391 U CN 211080391U CN 201921927341 U CN201921927341 U CN 201921927341U CN 211080391 U CN211080391 U CN 211080391U
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Abstract
The utility model discloses a karst cave lateral wall water intaking system that falls that disappears, the water supply well is on setting up the complete basement rock near the cave that falls that disappears outside, the degree of depth surpasss the vertical drilling in cave that falls that disappears, the bottom of drilling has the desilting well section, it has the inclined hole of one-level branch, the inclined hole of second grade branch and the inclined hole of tertiary branch of gradual downward sloping to bore in proper order from top to bottom on the lateral wall of water supply well, one-level, the inclined hole of second grade branch communicate water supply well and cave that falls that disappears respectively, the end of one-level, the inclined hole of second grade branch all is less than the perennial water level in cave that falls that disappears, be higher than the silt layer in the cave that falls that disappears, the inclined hole of tertiary branch stretches into; the wall protecting pipe is positioned in the main body part of the drilling hole and comprises a flower pipe section at the lower part and a solid pipe section at the upper part, and the water pump is arranged in the wall protecting pipe and can pump water in the wall protecting pipe out of the water supply well by combining with the water lifting pipe. Even if the water level is continuously reduced, the underground water in the hole can be pumped, and the problem of local water utilization is effectively solved.
Description
Technical Field
The utility model belongs to geological drilling engineering field, concretely relates to a water intaking system for karst cave of dissolving to and utilize this water intaking system to carry out the method of intaking.
Background
In karst rocky mountain areas, due to natural geography and stratum reasons, people and livestock are in a water-deficient state for a long time and have difficulty in drinking water. Rainwater quickly enters underground falling holes and underground rivers through ground runoff, the water level is buried deeply, and water resources hidden underground are difficult to utilize by a simple water pumping method.
In investigation, many water in the falling-water holes exist for years, but the water level is deep, the falling-water holes are irregular in shape, dangerous rocks and rolling stones exist on the side walls, weeds and shrubs are clustered, the specific conditions in the holes are difficult to detect generally, and an effective and feasible method for extracting underground water for people is not available.
The existing method for taking water by drilling well mostly adopts a mode of drilling a hole right above a water source, but because the water level of a digestion hole is deep, the water level of a drought rising season is greatly changed, silt exists at the bottom and the like, the existing method for taking water by drilling well cannot be effectively utilized on the karst digestion hole.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a water intaking system of karst cave of dissolving is exclusively used in, even the continuous decline of water level also can extract the groundwater in the hole, effectively solves local water problem.
Therefore, the utility model discloses the technical scheme who adopts does: a karst cave side wall water taking system comprises a water supply well, a water lifting pipe, a water pump and a wall protecting pipe, wherein the water supply well is a vertical drilling hole which is arranged on a complete bedrock close to the outer side of a cave to be subsided and has a depth exceeding the cave to be subsided, the diameter of the bottom of the drilling hole is smaller than that of the main body part of the drilling hole to form a sand sinking well section, a first-stage branch inclined hole, a second-stage branch inclined hole and a third-stage branch inclined hole which are gradually inclined downwards are sequentially drilled on the side wall of the water supply well from top to bottom, the first-stage branch inclined hole and the second-stage branch inclined hole are respectively communicated with the water supply well and the cave to be subsided, the tail ends of the first-stage branch inclined hole and the second-stage branch inclined hole are lower than the perennial water level of the cave and higher than a silt layer; the wall protection pipe is positioned in the main body part of the drilling hole, the wall protection pipe comprises a flower pipe section at the lower part and a solid pipe section at the upper part, the upper end of the flower pipe section is not lower than the perennial water level of the falling-down hole, and the water pump is arranged in the wall protection pipe and can pump water in the wall protection pipe out of the water supply well by combining with the water lifting pipe.
Preferably, the flower pipe section and the solid pipe section are both stainless steel pipes which are connected through threads.
More preferably, the distance between the water supply well and the falling-free hole is 4-8 m, and the depth of the water supply well exceeds the depth of the falling-free hole by 20-40 m.
And simultaneously, the utility model also provides a karst cave lateral wall water intaking method that disappears, including following step:
firstly, drilling a vertical drilling hole with the depth exceeding the water-absorbing cave as a water supply well on complete bedrock close to the outer side of the water-absorbing cave by using a core drilling machine, wherein the diameter of the bottom of the drilling hole is smaller than that of the main part of the drilling hole to form a sand-sinking well section;
sequentially drilling a first-stage branch inclined hole, a second-stage branch inclined hole and a third-stage branch inclined hole which are gradually inclined downwards on the side wall of the water supply well from top to bottom, wherein the first-stage branch inclined hole and the second-stage branch inclined hole are respectively communicated with the water supply well and the falling-free hole, the tail ends of the first-stage branch inclined hole and the second-stage branch inclined hole are lower than the perennial water level of the falling-free hole and higher than a sludge layer of the falling-free hole, and the third-stage branch inclined hole extends into a rock stratum below the falling-free hole;
putting the wall protection pipe into the main body part of the drilled hole, wherein the lower end of the wall protection pipe is just placed on the stepped surfaces of the main body part of the drilled hole and the sand settling well section, the wall protection pipe comprises a flower pipe section at the lower part and a solid pipe section at the upper part, and the upper end of the flower pipe section is not lower than the perennial water level of the collapse hole;
step four, installing the water pump in the wall protection pipe and installing the water raising pipe;
step five, when the water level in the falling hole is high, the underground water in the falling hole enters the retaining wall pipe through the first-stage branch inclined hole, the second-stage branch inclined hole and the perforated pipe section, and is pumped to the ground through the water pump and the water pumping pipe;
when the water level in the falling-water-absorption hole drops to a certain degree, the first-stage branch inclined hole is exposed out of the water surface, and the underground water in the falling-water-absorption hole enters the wall protection pipe through the second-stage branch inclined hole and the perforated pipe section and is pumped to the ground through the water pump and the water pumping pipe;
when the water level in the falling-water hole falls below a silt layer in a particularly drought period, the first-stage branch inclined holes and the second-stage branch inclined holes are exposed out of the water surface, and the underground water in the rock stratum at the lower part of the falling-water hole enters the retaining wall pipe through the third-stage branch inclined holes and the flower pipe section and is pumped to the ground through the water pump and the water-raising pipe.
The utility model has the advantages that:
(1) the mode of drilling right above the traditional water source is changed, the mode of drilling on the side wall is adopted, and the water source with different depths is extracted through a plurality of branch inclined holes. When the water level in the falling-water-level-fluctuating hole is higher, the first-level branch inclined hole and the second-level branch inclined hole are preferably selected for pumping water, so that the upper water source is ensured to be clean; when the water level in the falling hole drops to a certain degree, pumping water by adopting a secondary branch inclined hole; when the water level in the falling-water-absorption hole is reduced to be lower than the silt layer, the underground water in the rock stratum under the falling-water-absorption hole can be pumped to the ground for utilization through the three-stage branch inclined holes.
(2) The first-stage, second-stage and third-stage branch inclined holes are obliquely arranged, so that the branch inclined holes can be used for settling sand in the process of pumping water, and the effect of primary filtration is achieved; after the underground water in the rock stratum of the falling-water-absorption hole or the lower part of the falling-water-absorption hole is pumped into the retaining wall pipe, secondary sand settling can be carried out through the sand settling section at the bottom of the water supply well, and the secondary filtering effect is achieved.
(3) Because the bedrock outside the karst cave is seriously weathered, in order to prevent the collapse of the drill hole, on one hand, a wall protection pipe is arranged in the drill hole and is divided into an upper solid pipe section and a lower flower pipe section, so that the stability of the well wall can be ensured, and water can enter the wall protection pipe through the side wall of the flower pipe section; on the other hand, the complete bedrock close to the outer side of the water-filled cave is selected for drilling, and the problem that the drilled hole collapses due to incomplete bedrock is avoided.
(4) The water taking system and the water taking method are simple in construction, can be used for constructing a well by using a common core drilling machine, and are simple in structure and easy to implement; the depth of the water supply well is determined according to the depth of the falling hole, the depth is generally within 50 meters, water can be supplied by installing a water pump, the investment is not more than 15 ten thousand yuan, and if the geological conditions allow, the depth can be properly increased, and the effect is better; the risk is small, the water supply well is constructed in the karst rocky mountain area by other methods, the risk is extremely large, the well forming rate is low, the utility model can basically ensure the water outlet in the well, and the risk is extremely small; the problem of water shortage in karst mountainous areas can be effectively solved, most karst rocky mountainous areas are poor mountainous areas, water shortage is one of factors causing poverty, if the problem of drinking water for people and livestock can be effectively solved at low cost, the method is beneficial to people in the mountainous areas to engage in planting and breeding industries, and the method has a great promoting effect on getting rid of poverty and fighting against solidness.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
as shown in figure 1, the karst cave side wall water taking system mainly comprises a water supply well 1, a water raising pipe 2, a water pump 3 and a wall protecting pipe 4.
The service shaft 1 is a vertical borehole provided in the intact bedrock 6 near the outside of the cave 5 and having a depth exceeding the cave 5. Preferably, the distance between the water supply well 1 and the falling-water hole 5 is 4-8 m, and the depth of the water supply well 1 exceeds the depth of the falling-water hole 5 by 20-40 m.
The diameter of the bottom of the drill hole is smaller than that of the main part of the drill hole to form a sand settling well section 1d, the main part of the drill hole comprises a solid pipe well section at the upper part and a perforated pipe well section at the lower part, and a step surface is formed between the main part of the drill hole and the sand settling well section 1 d.
A primary branch inclined hole 1a, a secondary branch inclined hole 1b and a tertiary branch inclined hole 1c which are gradually inclined downwards are drilled on the side wall of the water supply well 1 from top to bottom in sequence. The primary branch inclined hole 1a and the secondary branch inclined hole 1b are respectively communicated with the water supply well 1 and the falling-prevention hole 5, and the tail ends of the primary branch inclined hole 1a and the secondary branch inclined hole 1b are lower than the perennial water level 5a of the falling-prevention hole 5 and higher than a sludge layer 5b of the falling-prevention hole 5. The three-stage branch inclined hole 1c extends into the rock stratum below the collapse hole 5.
The wall protecting pipe 4 is positioned in the main body part of the drilling hole, the wall protecting pipe 4 comprises a flower pipe section 4a at the lower part and a solid pipe section 4b at the upper part, the flower pipe section 4a is installed in the flower pipe well section, and the solid pipe section 4b is installed in the solid pipe well section. Preferably, the flower pipe section 4a and the solid pipe section 4b are both stainless steel pipes, and the two are connected by screw threads.
The upper end of the flower pipe section 4a is not lower than the perennial water level of the falling-water-absorption hole 5, the water pump 3 is arranged in the wall protection pipe 4 and can be combined with the water lifting pipe 2 to pump the water in the wall protection pipe 4 out of the water supply well 1.
A method for taking water from the side wall of a karst falling cavity comprises the following steps:
firstly, drilling a vertical drilling hole with the depth exceeding the outer side of the water-falling hole 5 on the complete bedrock close to the outer side of the water-falling hole 5 by using a core drilling machine to serve as a water supply well 1, wherein the diameter of the bottom of the drilling hole is smaller than that of the main part of the drilling hole to form a sand-sinking well section 1 d. Preferably, the distance between the water supply well 1 and the falling-water hole 5 is 4-8 m, and the depth of the water supply well 1 exceeds the depth of the falling-water hole 5 by 20-40 m.
And step two, sequentially drilling a primary branch inclined hole 1a, a secondary branch inclined hole 1b and a tertiary branch inclined hole 1c which are gradually inclined downwards on the side wall of the water supply well 1 from top to bottom. The primary branch inclined hole 1a and the secondary branch inclined hole 1b are respectively communicated with the water supply well 1 and the falling-prevention hole 5, and the tail ends of the primary branch inclined hole 1a and the secondary branch inclined hole 1b are lower than the perennial water level of the falling-prevention hole 5 and higher than a silt layer of the falling-prevention hole 5. The three-stage branch inclined hole 1c extends into the rock stratum below the collapse hole 5.
And step three, placing the wall protection pipe 4 into the main body part of the drilled hole, wherein the lower end of the wall protection pipe 4 is just placed on the step surface of the main body part of the drilled hole and the sand-sinking well section 1 d. The wall protection pipe 4 comprises a lower flower pipe section 4a and an upper solid pipe section 4b, and the upper end of the flower pipe section 4a is not lower than the perennial water level of the falling-off hole 5. The perforated pipe section 4a can protect the well wall and enable underground water outside the well to smoothly enter the well.
And step four, installing the water pump 3 in the wall protection pipe 4 and installing the water raising pipe 2.
And step five, when the water level in the falling-water-level-fluctuating hole 5 is higher, the underground water in the falling-water-level-fluctuating hole 5 enters the wall-protecting pipe 4 through the primary branch inclined hole 1a, the secondary branch inclined hole 1b and the floral pipe section 4a, and is pumped to the ground through the water pump 3 and the water-raising pipe 2.
When the water level in the falling-water-level-fluctuating hole 5 drops to a certain degree, the first-stage branch inclined hole 1a is exposed out of the water surface, and the underground water in the falling-water-level-fluctuating hole 5 enters the wall-protecting pipe 4 through the second-stage branch inclined hole 1b and the floral pipe section 4a and is pumped to the ground through the water pump 3 and the water-raising pipe 2.
When the water level in the digestion and falling hole is reduced below a sludge layer in a particularly drought period, the first-stage branch inclined hole 1a and the second-stage branch inclined hole 1b are exposed out of the water surface, and the underground water in the rock stratum below the digestion and falling hole 5 enters the wall protection pipe 4 through the third-stage branch inclined hole 1c and the flower pipe section 4a and is pumped to the ground through the water pump 3 and the water raising pipe 2. Underground water still exists in the rock stratum at the lower part of the dry season falling hole, and can still be obtained through the three-stage branch inclined holes 1c and the perforated pipe sections 4 a.
Claims (3)
1. The utility model provides a karst cave lateral wall water intaking system that falls that disappears, includes water supply well (1), lifting pipe (2), water pump (3) and protects wall pipe (4), its characterized in that: the water supply well (1) is a vertical drilling hole which is arranged on complete bedrock close to the outer side of the falling-water elimination hole (5) and has a depth exceeding that of the falling-water elimination hole (5), the bottom diameter of the drilling hole is smaller than the diameter of a main body part of the drilling hole to form a sand-sinking well section (1d), a primary branch inclined hole (1a), a secondary branch inclined hole (1b) and a tertiary branch inclined hole (1c) which are gradually inclined downwards are drilled on the side wall of the water supply well (1) from top to bottom in sequence, the primary branch inclined hole (1a) and the secondary branch inclined hole (1b) are respectively communicated with the water supply well (1) and the falling-water elimination hole (5), the tail ends of the primary branch inclined hole (1a) and the secondary branch inclined hole (1b) are lower than the perennial water level of the falling-water elimination hole (5) and higher than a silt layer of the falling-water elimination hole (5), and the tertiary branch inclined hole (1c) extends into a; the wall protection pipe (4) is located in a main body part of a drill hole, the wall protection pipe (4) comprises a flower pipe section (4a) at the lower part and a solid pipe section (4b) at the upper part, the upper end of the flower pipe section (4a) is not lower than the perennial water level of a stilling hole (5), and the water pump (3) is installed in the wall protection pipe (4) and can be combined with the water lifting pipe (2) to pump water in the wall protection pipe (4) out of the water supply well (1).
2. The karst cave side wall water intake system of claim 1, wherein: the flower tube section (4a) and the solid tube section (4b) are both stainless steel tubes and are connected through threads.
3. The karst cave side wall water intake system of claim 1, wherein: the distance between the water supply well (1) and the falling-water-level-fluctuating hole (5) is 4-8 m, and the depth of the water supply well (1) exceeds the depth of the falling-water-level-fluctuating hole (5) by 20-40 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927341.8U CN211080391U (en) | 2019-11-08 | 2019-11-08 | Karst water intake system for side wall of falling cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927341.8U CN211080391U (en) | 2019-11-08 | 2019-11-08 | Karst water intake system for side wall of falling cavity |
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| CN211080391U true CN211080391U (en) | 2020-07-24 |
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| CN201921927341.8U Active CN211080391U (en) | 2019-11-08 | 2019-11-08 | Karst water intake system for side wall of falling cavity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820850A (en) * | 2019-11-08 | 2020-02-21 | 重庆市二零八工程勘察设计院有限公司 | Karst falling cavity side wall water taking system and water taking method |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820850A (en) * | 2019-11-08 | 2020-02-21 | 重庆市二零八工程勘察设计院有限公司 | Karst falling cavity side wall water taking system and water taking method |
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Address after: 400 700 No. 10 Natural Labor Village, Beibei District, Chongqing Patentee after: Chongqing 2008 Geological Environment Research Institute Co.,Ltd. Address before: 400 700 No. 10 Natural Labor Village, Beibei District, Chongqing Patentee before: Chongqing 2008 engineering survey and Design Institute Co.,Ltd. |