CN114876466B - Method for preventing well wall from cracking through active protection blocking ring - Google Patents
Method for preventing well wall from cracking through active protection blocking ring Download PDFInfo
- Publication number
- CN114876466B CN114876466B CN202210610986.9A CN202210610986A CN114876466B CN 114876466 B CN114876466 B CN 114876466B CN 202210610986 A CN202210610986 A CN 202210610986A CN 114876466 B CN114876466 B CN 114876466B
- Authority
- CN
- China
- Prior art keywords
- blocking ring
- active protection
- drill
- wall
- well wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000005336 cracking Methods 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims description 38
- 230000001681 protective effect Effects 0.000 claims description 20
- 239000002689 soil Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- 230000002829 reductive effect Effects 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 8
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000004062 sedimentation Methods 0.000 abstract description 6
- 238000005065 mining Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D8/00—Shafts not provided for in groups E21D1/00 - E21D7/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a method for preventing and treating well wall breakage through an active protection blocking ring, and belongs to the technical field of underground engineering structure protection. A circle of active protection blocking ring which is easy to generate longitudinal shear deformation and can isolate water is constructed on the surrounding stratum of the shaft of the mine shaft, so that the influence of the settlement of the surrounding stratum on the shaft can be blocked. The active protection blocking ring can prevent vertical additional force generated by settlement of the stratum outside the active protection blocking ring from acting on the well wall, reduce water pressure acting on the well wall and improve the stress condition of the well wall. The reason of the disaster of the well wall breakage is that the vertical additional force generated by the stratum sedimentation and acting on the outer side of the well wall can cause the vertical over-pressure of the well wall, and the existence of the active protection blocking ring fundamentally eliminates the vertical additional force generated by the stratum sedimentation on the outer side of the well wall and acting on the outer side of the well wall, thereby achieving the purpose of preventing and treating the well wall breakage.
Description
Technical Field
The invention relates to a method for preventing and treating well wall fracture, which is suitable for being implemented under the special stratum condition of a deep surface soil layer and belongs to the technical field of underground engineering structure protection.
Background
From the eighties of the last century, the vertical shaft wall of a plurality of mining areas such as Shuihuai mining areas, yongxia mining areas, yanzhou mining areas, great tun mining areas and the like in China has a rupture accident. So far, more than 130 mineshafts have been subjected to a rupture disaster, and the safe production of mines is seriously damaged. The research shows that the fundamental reason of the well wall fracture is that the stratum around the well wall sinks, the interface between the stratum and the outer side of the well wall generates a vertical downward additional force, and the vertical additional force acting on the outer side of the well wall is continuously increased along with the sinking of the stratum, so that the stress of the well wall exceeds the bearing capacity of the well wall, and the well wall fractures.
The main technical route for preventing and treating the well wall fracture at present is as follows: (1) "anti". The bearing capacity of the well wall is enhanced by improving the strength of well wall materials and increasing the thickness of the well wall, and the combined action of horizontal load and vertical load is borne; due to the excessive vertical additional forces, it is often economically and technically not feasible to use hard-reactive methods when the strike layer is too thick.
(2) "subtract". Filling and reinforcing the aquifer, and reducing the consolidation compression amount of the soil layer so as to reduce the subsidence amount or the subsidence rate of the stratum and further reduce the harm of vertical additional force to the well wall;
(3) "let". The structure of the well wall at the surface soil section is changed, so that the well wall can be vertically contracted to adapt to soil layer consolidation compression and stratum sinking, the safety of the well wall is guaranteed, and meanwhile, the change of the structural form of the well wall can also be used for reducing and limiting the increase of the additional force.
Based on the technical route, the main methods adopted at present are a grouting method around a shaft, a channel steel or steel plate well ring reinforcing method on the inner side of a well wall, a pressure relief groove longitudinally opening method on the well wall or the combination of the methods. However, the methods have limitations, after the shaft wall fracture accident occurs, after the treatment by the method, the treatment effect is short in maintenance time or poor, the shaft of the vertical shaft can be damaged again or even for multiple times, and the required treatment cost is greatly increased if the shaft of the vertical shaft needs to be treated for multiple times.
Disclosure of Invention
Aiming at the defects of the prior art, the method for preventing and treating the well wall from breaking through the active protection blocking ring is provided, a method for radically treating the damage of the vertical shaft is found out from the angle analysis of the hydrogeology of the mine according to the well wall breaking disaster mechanism under the special stratum condition of the deep surface soil layer, and the adverse effect on the well wall caused by the vertical additional force generated by the stratum sedimentation is eliminated, so that the active protection effect on the shaft of the vertical shaft of the mine is achieved, and the shaft breaking disaster is prevented.
<xnotran> , , , , , , , , , , , ; </xnotran>
The method comprises the following specific steps:
step 1: depending on the actual situation and the field conditions, determining the position of the shaft of the mine shaft needing to implement the active protection blocking ring, construction marking of the active protection blocking ring is carried out in advance around the shaft of the mine shaft, namely, the position of the top of the active protection blocking ring is marked around the shaft of the mine shaft;
and 2, step: continuously constructing a circle of mutually partially overlapped drill holes in the underground vertical direction along the position of the top of the pre-marked blocking ring, wherein the depth boundary of the drill holes is the position of which the depth does not exceed 5m below a water-impermeable layer passing through the surface soil and bedrock interface, and the specific depth is set according to the actual protection requirement;
specifically, the method comprises the following steps: when the first drilling hole is constructed, a conventional drilling machine is used for implementing the first drilling hole, the wall protection guide drill collar is replaced for implementing other drilling holes from the construction of the second drilling hole, the wall protection guide drill collar comprises a drill collar side which is movably connected with a counterweight body through a positioning sleeve, the tail part of the drill collar is connected with a drill rod, the end part of the drill collar is connected with a drill bit, and when the wall protection guide drill collar is used for drilling holes, the counterweight body connected to the positioning sleeve keeps relatively static and cannot rotate along with the drill bit; the counterweight body can be replaced and adjusted as required, and the linear distance between the center line of the counterweight body and the center line of the drill collar is smaller than the diameter of the drill hole, so that the adjacent drill holes are partially overlapped; the counterweight body of the protective wall guide drill collar is used for balancing the radial force of drilled holes and unwrilled holes along the overlapped part of the drilled hole and the new drilled hole during the drilling process of the protective wall guide drill collar, so that the drilling process is smooth, the stress on two sides is effectively prevented from being unbalanced during the drilling process, and the drill bit is prevented from deviating during the drilling process; repeatedly using the retaining wall guide drill collar to drill holes until all the holes arranged on the active protection blocking ring are drilled;
and 3, step 3: drilling all rock and soil bodies in the active protection blocking ring through a circle of drilling holes according to the mark of the active protection blocking ring, finally forming a circle of continuous protection layer groove body, reserving a space for filling the active protection blocking ring, and preventing the hole wall from collapsing by adopting slurry to protect the wall in the drilling process;
and 4, step 4: the filling blocking material which can isolate water and is easy to generate longitudinal shearing deformation after being solidified is injected into the bottom of the protective layer groove body through a pipeline in a high-pressure mode, the protective wall in the protective layer groove body is filled with slurry in a replacement mode from bottom to top, and an active protective blocking ring is formed in the protective layer groove body after the filling blocking material is solidified, so that vertical additional stress generated by settlement of stratum outside the active protective blocking ring is prevented from acting on the wall of a shaft of a mine shaft, the water pressure acting on the wall of the shaft is reduced, the external load borne by the wall of the shaft is greatly reduced, and the stress condition of the wall of the shaft is improved.
Furthermore, the thickness of the rock-soil stratum reserved between the active protection blocking ring and the shaft of the mine shaft is not more than 30 meters, namely, the straight line distance between the edge of the shaft and the inner side of the active protection blocking ring does not exceed 30 meters.
Furthermore, an active protection blocking ring can be implemented on the outer side of the well shaft, so that the well wall is treated and the well wall is prevented from being damaged again; or the active protection blocking ring can be constructed firstly, and then a shaft is newly built on the inner side of the active protection blocking ring to carry out active protection on the construction of the shaft.
Furthermore, the counterweight body arranged on the side of the wall-protecting guide drill collar through the positioning sleeve is in an inverted mushroom shape, the side of the drilled hole has the functions of vertical guiding and hole wall stabilizing, meanwhile, the radial force between the drilled hole after construction and the drilled hole to be constructed is balanced due to the gravity center offset effect of the counterweight body, the smooth proceeding of the drilled hole is ensured, the counterweight body keeps still when the drill collar rotates due to the cooperation of the counterweight body and the positioning sleeve, the counterweight body always keeps on the side of the drilled hole, and the split structure of the counterweight device is connected through bolts so that the counterweight device can be sleeved on the positioning sleeve.
Further, the filling blocking material which can block water and is easy to generate longitudinal shearing deformation in the protective layer groove body in the step 4 is as follows: the high-water filling material and the interlayer comprise a plurality of layers of waterproof plates with lubricating property and flexible asphalt, and the waterproof plates are poured under slurry to form the active protective blocking ring.
Has the beneficial effects that: the method constructs a circle of active protection blocking ring capable of blocking the influence of surrounding stratum sedimentation on the shaft in the surrounding stratum of the shaft of the mine shaft, and fundamentally reduces the vertical additional force borne by the shaft wall; the blocking ring material has the characteristics of water isolation and easy occurrence of longitudinal shear deformation. The formation of the active protection blocking ring can prevent the vertical additional force generated by the settlement of the stratum outside the active protection blocking ring from acting on the well wall, reduce the water pressure acting on the well wall and improve the stress condition of the well wall. According to the mechanism of the borehole wall fracture disaster under the special stratum condition, vertical additional force acting on the outer side of the borehole wall is generated due to the sedimentation of the stratum around the borehole wall of the vertical shaft, and the additional force can cause the too large stress of the borehole wall to generate the fracture disaster. The blocking ring is arranged to fundamentally eliminate the vertical additional force generated by the settlement of the stratum around the shaft on the shaft wall, thereby achieving the purpose of preventing and treating the breakage of the shaft wall.
The construction of the active protection blocking ring can block the vertical additional force generated by the settlement of the outer stratum from acting on the well wall, thereby greatly reducing the external load born by the well wall, improving the stress state of the well wall, improving the bearing capacity of the well wall, and easily generating longitudinal shearing deformation by the material of the blocking ring to eliminate most vertical additional force.
In the drilling and grooving process, the invention provides a method for drilling and grooving, which can be suitable for the situation that a gap drilled on one side and a rock-soil area drilled on the other side are generated in the drilling and grooving process, and the wall protection guide drill collar not only solves the problems that a drill rod deviates from the center of the drill collar and the verticality of the drilled hole cannot be ensured due to unbalanced stress on the drilled side and the un-drilled side in the drilling process, but also can play a role in stabilizing the hole wall, and simultaneously is a feasible method for realizing continuous drilling and grooving and forming a continuous groove body.
The blocking ring material has the performance of easy longitudinal shearing deformation, and can prevent vertical additional force generated by uneven settlement of the stratum of the mine shaft from acting on the shaft; and the blocking ring material has good water-resisting property, and can reduce the water pressure transferred to the shaft, so that the passive support strength of the shaft of the mine can be reduced, the manufacturing cost is saved, the construction speed is increased, and the safety is improved.
Drawings
FIG. 1 is a front view of a construction structure of the method for preventing and treating well wall breakage through an active protection blocking ring;
FIG. 2 is a top view of the construction structure of the method for preventing and treating well wall rupture by the active protective blocking ring.
FIG. 3 is a front view and a cross-sectional view of a borehole in a retaining wall guide collar of the present invention.
FIG. 4 is a detail view of a retaining wall guide drill collar of the present invention.
In the figure: 1. the method comprises the following steps of 1, a mine shaft 2, an active protection blocking ring 3, a drill hole 4, a depth boundary line 5, a protective wall guide drill collar 6, a drill rod 7, a drill collar 8, a drill bit 9, a counterweight 10 and a positioning sleeve.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1-4, the method for preventing and treating well wall fracture by using active protective blocking ring of the present invention comprises the following steps:
step 1: determining the position of a mine shaft 1 needing to implement the active protection blocking ring 2 according to actual conditions and field conditions, and performing construction marking of the active protection blocking ring 2 in advance around the mine shaft 1, namely marking the position of the top of the active protection blocking ring 2 around the mine shaft 1; the thickness of the rock-soil stratum reserved between the active protection blocking ring 2 and the shaft 1 of the shaft of the mine well is not more than 30 meters, namely, the straight line distance between the edge of the shaft 1 of the mine shaft and the inner side of the active protection blocking ring 2 is not more than 30 meters. The active protection blocking ring 2 is suitable for a newly-built shaft and an established shaft, the active protection blocking ring 2 is implemented firstly for the newly-built shaft, the shaft 1 is constructed, the active protection effect is achieved, and the active protection blocking ring 2 is constructed around the established shaft, so that the effects of treating the shaft wall and preventing secondary damage are achieved.
Step 2: continuously constructing a circle of mutually partially overlapped drill holes 3 along the position of the top of the pre-marked blocking ring 2 in the underground vertical direction, wherein the depth boundary 4 of the drill holes does not exceed the position of a water-impermeable layer 5m below the interface of surface soil and bedrock;
and step 3: the first constructed borehole 3 in one circle of boreholes 3 is continuously constructed by using a conventional drilling machine, then the wall-protecting guide drill collar 5 is replaced to realize other boreholes 3, the wall-protecting guide drill collar 5 comprises a drill collar 7, a counterweight body 9, a positioning sleeve 10 and the like, the tail part of the drill collar 7 is connected with a drill rod 6, a drill bit 8 is arranged at the end part of the drill collar 7, the side surface of the drill collar 7 is connected with the counterweight body 9 through the positioning sleeve 10, the positioning sleeve 10 is movably connected with the side wall of the drill collar 7, and when the drill bit 8 drills a borehole, the counterweight body 9 connected with the positioning sleeve 10 keeps relatively static and does not rotate along with the drill bit; the counterweight body 9 can be replaced and adjusted as required, and the linear distance between the central line of the counterweight body 9 and the central line of the drill collar 7 is less than the diameter of the drill hole 3, so as to ensure that adjacent drill holes are overlapped; as all the other drilling holes 3 except the first drilling hole 3 are partially overlapped with the adjacent drilling holes, when in drilling, the counterweight body 9 of the protective wall guide drill collar 4 is just a cylindrical gap drilled along one side, the drilling hole 3 is implemented to a new rock-soil area needing drilling, the radial force of the drilled hole and the drilled holes is balanced by the counterweight body 9 in the drilling process of the protective wall guide drill collar 5, the counterweight body 9 is overlapped with the newly drilled hole 3 along the previously drilled hole 3, the drilling hole is smoothly carried out, the problem that the stress on two sides is unbalanced in the drilling process, and the drill bit 6 is deviated to the drilled hole side is effectively prevented; repeatedly using the retaining wall guide drill collar 5 to drill holes 3 until all the holes 3 distributed by the active protection blocking ring 2 are finished, ensuring that the holes 3 drill away all rock and soil bodies in the holes according to the marked active protection blocking ring 2, finally forming a circle of continuous protective layer groove body, reserving space for later replacement filling of the active protection blocking ring 2, and adopting slurry to protect walls in the drilling process to prevent the walls of the holes from collapsing; the counterweight body 9 arranged on the left side of the protective wall guide drill collar 4 is in an inverted mushroom shape, the vertical guide and hole wall stabilization effects are achieved on the drilled hole side, meanwhile, due to the gravity center bias effect of the counterweight body 9, the radial force between the drilled hole 3 which is finished in construction and the drilled hole 3 to be constructed is balanced, the smooth proceeding of the drilled hole 3 is guaranteed, the counterweight body 9 is kept still when the drill collar 7 rotates due to the cooperation of the counterweight body 9 and the positioning sleeve 10, the counterweight body 9 is always kept on the drilled hole side, and the split structure of the counterweight 9 device is connected through bolts, so that the counterweight 9 device can be sleeved on the positioning sleeve 10.
And 4, step 4: the filling blocking material which can isolate water and is easy to generate longitudinal shearing deformation after being solidified is injected into the bottom of the protective layer groove body through a pipeline at high pressure, the protective wall in the protective layer groove body is replaced and filled with slurry from bottom to top, and the active protective blocking ring 2 is formed in the protective layer groove body after the filling blocking material is solidified, so that vertical additional stress generated by settlement of the stratum outside the protective layer is prevented from acting on the well wall of the shaft 1 of the mine shaft, the water pressure acting on the well wall is reduced, the external load borne by the well wall is greatly reduced, and the stress condition of the well wall is improved. According to the mechanism of the well wall rupture disaster under the special stratum condition, the vertical additional force acting on the outer side of the well wall is generated due to the sedimentation of the stratum around the well wall of the vertical well, and the additional force can cause the overlarge stress on the well wall to generate the rupture disaster. The arrangement of the blocking ring fundamentally eliminates the vertical additional force generated by the settlement of the stratum around the shaft on the shaft wall, thereby achieving the purpose of preventing and treating the shaft wall fracture; the filling blocking material which can prevent water and is easy to generate longitudinal shearing deformation in the protective layer groove body is as follows: the high-water filling material, the interlayer containing the multilayer waterproof plate with lubricating property and the flexible asphalt can be poured under slurry to form a blocking ring.
Claims (5)
1. A method for preventing well wall from cracking through an active protection blocking ring is characterized in that: an active protection blocking ring (2) capable of blocking peripheral stratum settlement is built in an outer rock-soil layer of the side wall of a mine shaft (1), the setting depth of the active protection blocking ring (2) is set according to the depth required to be protected by the mine shaft (1), the inner side of the active protection blocking ring (2) is not contacted with the side wall of the mine shaft (1), a rock-soil stratum is reserved between the active protection blocking ring (2) and the mine shaft (1), the active protection blocking ring (2) is arranged around the mine shaft (1), so that the cross sections of the mine shaft (1) and the active protection blocking ring (2) form a lantern ring structure, the active protection blocking ring (2) is made of a material capable of resisting water and easily generating longitudinal shear deformation, and the settlement of the outer side stratum of the active protection blocking ring can be prevented or greatly reduced from being transferred to the rock-soil stratum at the inner side close to the shaft side, and the mine shaft (1) is protected from being damaged by the settlement influence of the stratum;
the method comprises the following specific steps:
step 1: determining the position of a mine shaft (1) needing to implement the active protection blocking ring (2) according to actual conditions and field conditions, and performing construction marking on the active protection blocking ring (2) in advance around the mine shaft (1), namely marking the position of the top of the active protection blocking ring (2) around the mine shaft (1);
and 2, step: continuously constructing a circle of mutually partially overlapped drill holes (3) along the position of the top of the pre-marked blocking ring (2) in the underground vertical direction, wherein the depth of a depth boundary (4) of the drill holes does not exceed the position of a water-impermeable layer 5m below the interface of surface soil and bedrock, and the specific depth is set according to the actual protection requirement;
specifically, the method comprises the following steps: when a first drill hole (3) is constructed, a conventional drilling machine is used for implementation, a wall protection guide drill collar (5) is replaced from the construction of a second drill hole (3) for implementation of other drill holes (3), the wall protection guide drill collar (5) comprises a counterweight body (9) movably connected to one side of the drill collar (7) through a positioning sleeve (10), the tail of the drill collar (7) is connected with a drill rod (6), the end part of the drill collar (7) is connected with a drill bit (8), and when the wall protection guide drill collar (5) is used for drilling, the counterweight body (9) connected to the positioning sleeve (10) keeps relatively static and does not rotate along with the drill bit (8); the counterweight body (9) can be replaced and adjusted as required, and the linear distance between the central line of the counterweight body (9) and the central line of the drill collar (7) is less than the diameter of the drill hole (3) so as to ensure that the adjacent drill holes (3) are partially overlapped; as all the other drill holes (3) except the first implemented drill hole (3) are partially overlapped with the adjacent drill holes when implemented, when drilling, the counterweight body (9) of the wall-protecting guide drill collar (5) is just propelled along with the drill bit (8) and simultaneously implements a new drill hole (3) to a rock-soil area along the edge of the last completed drill hole (3), the radial force of the drilled and the non-drilled drill holes is balanced by the counterweight body (9) in the drilling process of the wall-protecting guide drill collar (5), and the counterweight body (9) is overlapped with the new drilled drill hole (3) along the previously drilled drill hole (3), so that the drilling is smoothly carried out, the unbalanced stress on two sides in the drilling process is effectively prevented, and the drill bit (8) is prevented from generating deviation in the drilling process; repeatedly using the wall protection guide drill collar (5) to drill the holes (3) until all the holes (3) distributed by the active protection blocking ring (2) are finished;
and step 3: drilling all rock-soil bodies in the active protection blocking ring (2) through a circle of drill holes (3) according to the mark of the active protection blocking ring, finally forming a circle of continuous protection layer groove body, reserving space for filling the active protection blocking ring (2), and preventing hole wall collapse by adopting slurry to protect walls in the drilling process;
and 4, step 4: the filling blocking material which can be isolated from water and is easy to generate longitudinal shearing deformation after being solidified is injected into the bottom of the protective layer groove body through a pipeline in a high-pressure mode, the protective wall in the protective layer groove body is filled with slurry in a replacement mode from bottom to top, and an active protective blocking ring (2) is formed in the protective layer groove body after the filling blocking material is solidified, so that vertical additional stress generated by stratum settlement outside the active protective blocking ring is prevented from acting on the well wall of a shaft (1) of a mine shaft, the water pressure acting on the well wall is reduced, the external load borne by the well wall is greatly reduced, and the stress condition of the well wall is improved.
2. The method for preventing well wall from breaking through the active protective blocking ring according to claim 1, wherein the method comprises the following steps: the thickness of the rock-soil stratum left between the active protection blocking ring (2) and the shaft (1) of the mine shaft is not more than 30 m, namely, the straight line distance between the edge of the shaft (1) of the mine shaft and the inner side of the active protection blocking ring (2) does not exceed 30 meters.
3. The method for preventing and treating well wall fracture through the active protection blocking ring according to claim 1, is characterized in that: the active protection blocking ring (2) can be implemented on the outer side of the well shaft (1) which is built, so that the well wall is treated and the well wall is prevented from being damaged again; or the active protection blocking ring (2) can be constructed firstly, then the shaft (1) is newly built on the inner side of the active protection blocking ring (2), and the construction of the shaft (1) is actively protected.
4. The method for preventing well wall from breaking through the active protective blocking ring according to claim 1, wherein the method comprises the following steps: the counterweight body (9) arranged on the side of the protective wall guide drill collar (5) through the positioning sleeve (10) is in an inverted mushroom shape, the vertical guide and hole wall stabilization effects are achieved on the drilled hole side, meanwhile, due to the gravity center offset effect of the counterweight body (9), the radial force between the drilled hole (3) which is constructed and the drilled hole (3) to be constructed is balanced, the smooth proceeding of the drilled hole (3) is guaranteed, the counterweight body (9) is fixed when the drill collar (7) rotates due to the cooperation of the counterweight body (9) and the positioning sleeve (10), the counterweight body (9) is always kept on the drilled hole side, and the split structure of the counterweight body (9) is connected through bolts, so that the counterweight body can be sleeved on the positioning sleeve (10).
5. The method for preventing and treating well wall fracture through the active protection blocking ring according to claim 1, is characterized in that: the filling blocking material which can prevent water and is easy to generate longitudinal shearing deformation in the protective layer groove body in the step 4 is as follows: the high-water filling material and the interlayer comprise a plurality of layers of water-proof plates with lubricating property and flexible asphalt, and are poured under slurry to form the active protection blocking ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210610986.9A CN114876466B (en) | 2022-05-31 | 2022-05-31 | Method for preventing well wall from cracking through active protection blocking ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210610986.9A CN114876466B (en) | 2022-05-31 | 2022-05-31 | Method for preventing well wall from cracking through active protection blocking ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114876466A CN114876466A (en) | 2022-08-09 |
| CN114876466B true CN114876466B (en) | 2023-01-06 |
Family
ID=82679145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210610986.9A Active CN114876466B (en) | 2022-05-31 | 2022-05-31 | Method for preventing well wall from cracking through active protection blocking ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114876466B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1000217C2 (en) * | 1995-04-25 | 1996-10-28 | Fundamentum Bv | Method for inserting a pipe into the soil as well as a drill pipe. |
| KR20150040588A (en) * | 2013-10-07 | 2015-04-15 | 선명건설 주식회사 | Reinforced direct boring attached imbedded bit at head steelpipe and one shot grouting in tunneling method |
| CN106246188A (en) * | 2016-10-18 | 2016-12-21 | 中国矿业大学 | The system and method that the preventing and treating coal mine shaft lining shaft deformation of stratum settlement compatibility of deformation is destroyed |
| CN107829441A (en) * | 2016-09-15 | 2018-03-23 | 邹宗煊 | It is a kind of do not influence surrounding enviroment draw hole caisson structure and its construction method |
-
2022
- 2022-05-31 CN CN202210610986.9A patent/CN114876466B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1000217C2 (en) * | 1995-04-25 | 1996-10-28 | Fundamentum Bv | Method for inserting a pipe into the soil as well as a drill pipe. |
| KR20150040588A (en) * | 2013-10-07 | 2015-04-15 | 선명건설 주식회사 | Reinforced direct boring attached imbedded bit at head steelpipe and one shot grouting in tunneling method |
| CN107829441A (en) * | 2016-09-15 | 2018-03-23 | 邹宗煊 | It is a kind of do not influence surrounding enviroment draw hole caisson structure and its construction method |
| CN106246188A (en) * | 2016-10-18 | 2016-12-21 | 中国矿业大学 | The system and method that the preventing and treating coal mine shaft lining shaft deformation of stratum settlement compatibility of deformation is destroyed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114876466A (en) | 2022-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110374600B (en) | Non-offset arrangement method for mining roadway of extremely-close coal seam group | |
| CN104533467B (en) | A kind of high artesian, the method for protecting support in fault disruption zone tunnel | |
| Verfel | Rock grouting and diaphragm wall construction | |
| CN109322671B (en) | Method for getting rid of worn and trapped shield cutter | |
| CN107387082A (en) | A kind of method for weakening coal seam tight roof | |
| CN105804754B (en) | A kind of coal seam is Main aquifer pitshaft method for uncovering coal | |
| CN108222944A (en) | A kind of improved drop shaft sinking driving shaft construction method | |
| CN113605434A (en) | Bridge pile foundation construction method for high-speed railway karst | |
| CN110284885A (en) | Shield inspection-pit construction method | |
| CN111577118B (en) | Mechanical rapid hole forming construction method for slide-resistant pile | |
| CN107035376A (en) | One kind common law in huge thick bedrock aquifer digs shaft construction method | |
| CN106677166A (en) | Flow construction method for forming cast-in-place bored pile for gravel-decomposed rock stratum in double-machine combined mode | |
| CN104265357B (en) | Anti-burst method is taken out in a kind of strong prominent coal seam in advance | |
| CN110454164A (en) | Impulsion pressure tunnel buffering energy-absorbing band waterpower pre-setting method | |
| CN113668512B (en) | Construction method of adjacent subway full casing full slewing drilling machine pile foundation | |
| CN106948347A (en) | Pile extracting method and pile pulling system | |
| CN104790971B (en) | A kind of advanced pre-add solid method of steel tube shed of the small spacing ground constructing tunnel of shallow embedding | |
| CN114876466B (en) | Method for preventing well wall from cracking through active protection blocking ring | |
| CN113863273A (en) | Construction method of bored pile adjacent to operation railway | |
| CN112360468A (en) | Excavation supporting method for vertical shaft slag sliding well | |
| CN111894452A (en) | Combined drilling method for end-bearing pile of aeolian sand deep-covering tuff stratum | |
| CN105064994B (en) | A kind of airborne continuous grooving release coal mining equipment and method | |
| CN111894672B (en) | Method for advanced treatment of roof separation water damage of stope by adopting ground drainage drilling | |
| CN114837166A (en) | Construction method of pile foundation for complex terrain geology in mountainous area | |
| CN112360470A (en) | Construction method for improving stress environment of advanced support pressure section of mining roadway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |