CN103343690A - Shaft antiseep structure used when large section of inclined shaft passes through aquifer and construction method thereof - Google Patents
Shaft antiseep structure used when large section of inclined shaft passes through aquifer and construction method thereof Download PDFInfo
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- CN103343690A CN103343690A CN2013103171341A CN201310317134A CN103343690A CN 103343690 A CN103343690 A CN 103343690A CN 2013103171341 A CN2013103171341 A CN 2013103171341A CN 201310317134 A CN201310317134 A CN 201310317134A CN 103343690 A CN103343690 A CN 103343690A
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Abstract
Disclosed are a shaft antiseep structure used when the large section of an inclined shaft passes through an aquifer and a construction method thereof. The shaft antiseep structure is a multilayer supporting structure of a mine laneway. The shaft antiseep structure comprises a primary support and a permanent support. Water-resisting layers are paved on the surface of the primary support and in the position between the primary support and the permanent support. The permanent support is a concrete masonry-lining support. A profile steel support is composed of an arch part support, a left side wall support, a right side wall support and an antiarch support, and a water filtering layer is arranged on the lower side of the antiarch support. The shaft antiseep structure solves the problem that shaft antiseep measures are not sufficient in the shaft construction process that the large section of the inclined shaft in a mine passes through the aquifer, and further solves the problems of being long in construction period and high in cost in a traditional inclined shaft unwatering and water retention technology.
Description
Technical field
The invention belongs to mining tunnel excavation field, particularly the big section of a kind of slope is crossed pit shaft anti-leakage structure and the job practices thereof of water-bearing section.
Background technology
Unavoidably can run into the aquifer in the process of the exploitation of coal resources and mine excavation in recent years, along with the progress of production technique, the technician has more and more proposed the concept of green exploitation.Water conservation is the prerequisite of construction in the green exploitation, and pit shaft is the target that will reach by the aquifer smoothly, has therefore related to water-retaining production and inclined shaft is crossed unstable soil layer two parts construction technology.
Present stage, the construction technology that slope is crossed unstable soil layer (aquifer) is comparative maturity at present, has developed multiple job practices, as the churning method, and slip casting method, freezing process, well-points dewatering method etc.Water-retaining production then with focusing on of most job practicess the control problem of pit shaft top board, the antiseep problem of the water conservation problem, particularly pit shaft in driving and shaft building period is not related to, to the recovery of water resource with utilize problem also not have to relate to.Concerning some aquifers are the area in key industry and living water use source, construction must be guaranteed that this aquifer water resource is not contaminated and destroy, therefore anti-seep measure and the job practices that the big section of inclined shaft is crossed the water-retaining production measure, particularly pit shaft in aquifer all proposed new requirement.
Summary of the invention
The purpose of this invention is to provide the big section of a kind of inclined shaft and cross aquifer pit shaft anti-leakage structure and job practices thereof, solving the big section of slope crosses in the water-bearing section shaft construction process, the problem of the anti-seep measure deficiency of pit shaft, it is longer to solve traditional inclined shaft drainage water conservation technology duration, the expense problem of higher.
For achieving the above object, the present invention adopts following technical scheme:
The big section of a kind of inclined shaft is crossed aquifer pit shaft anti-leakage structure, be the multilayer supporting and protection structure of mine laneway, comprise preliminary bracing and permanent support, described preliminary bracing comprises steel pipe canopy, shape steel bracket and preliminary bracing concrete, described shape steel bracket is made up of arch support, leftwall support, RightWall support and antiarch support, described preliminary bracing concrete is made up of arch ring sprayed mortar, abutment wall sprayed mortar and antiarch cast-in-situ concrete
Be respectively equipped with arch water barrier and abutment wall water barrier between the preliminary bracing of arch, abutment wall and the permanent support, the downside of described antiarch support is provided with drainage layer and antiarch water barrier from the bottom to top, the water barrier that described antiarch water barrier and abutment wall water barrier and arch water barrier link into an integrated entity
Described permanent support is that concrete is built the arch supporting, and the permanent support concrete is made up of abutment wall cast-in-situ concrete, arch cast-in-situ concrete and cast-in-situ concrete terrace.
Described arch ring sprayed mortar and abutment wall sprayed mortar are the plain concretes that concrete grade is at least C25, and the thickness sum of its jet thickness and shape steel bracket is at least 300mm.
Described water barrier is waterproof geotechnique layer of cloth.
Described antiarch cast-in-situ concrete, abutment wall cast-in-situ concrete and arch cast-in-situ concrete are at least the concrete of C30 for interpolation BR type enhancing waterproof agent, label, the thickness of described antiarch cast-in-situ concrete is 300mm～600mm, and the thickness of described abutment wall cast-in-situ concrete and arch cast-in-situ concrete is at least 400mm.
Described drainage layer comprises that filtrate and interval are embedded in the aqueduct in the filtrate.
The big section of a kind of inclined shaft is crossed the job practices of the drainage water conservation of aquifer pit shaft anti-leakage structure, and construction sequence is as follows:
Step 1: set up the work plane drainage system;
Step 2: along test observation well and the pumped well in the both sides elder generation construction precipitation well of inclined shaft tunnel center line;
Step 3: the draw water clear water regulating reservoir of pipeline and precipitation well of construction pipe well;
Step 4: continue all the other precipitation wells of construction along the both sides of inclined shaft tunnel center line;
Step 5: use water pumper to the precipitation well drainage that draws water, through the drainage that draws water of precipitation well, groundwater table is down to below the base plate of work plane;
Step 6: the brill of steel pipe canopy dress construction in the preliminary bracing of inclines tunnel;
Step 7: use benching tunnelling method to carry out the excavation construction in pit shaft tunnel, at first the periphery of topping bar is carried out excavation construction;
Step 8: the installation of arch support comprises the welding of boring dress arch joist, laying dowel between reinforced mesh and adjacent two stands;
Step 9: at arch support construction arch ring sprayed mortar;
Step 10: the excavation construction at the middle part of topping bar;
Step 11: the excavation construction of the leftwall part of getting out of a predicament or an embarrassing situation;
Step 12: the leftwall support is installed, at support construction abutment wall sprayed mortar;
Step 13: the excavation construction of the RightWall part of getting out of a predicament or an embarrassing situation;
Step 14: the RightWall support is installed, at support construction abutment wall sprayed mortar;
Step 15: the drainage layer is laid in the roadway surrounding rock bottom, buries aqueduct in filtrate underground;
Be provided with the helically welded tube of placing along the borehole wall in the described precipitation well, uniform a plurality of inlet openings, the bottom of described helically welded tube, described inlet opening surface parcel nylon wire also uses waterproof silk thread colligation consolidation, and precipitation well filtrate is filled up in the helically welded tube outside in the borehole wall scope.
The equidistant both sides that are evenly distributed on inclined shaft tunnel center line of described precipitation well.
The construction sequence of described precipitation well comprises the rig type selecting, rig is in place with the sampling of adjustment, rock core, down well casing, fill out filtrate, well-flushing, examination and take out precipitation.
Compared with prior art the present invention has following characteristics and beneficial effect:
Among the present invention in the pit shaft anti-leakage structure be set to water-retaining production and the big section of inclined shaft of water barrier cross the shaft construction in aquifer and pass moisture sandy gravel stratum fast and lay the first stone.
Compare traditional integral body excavation in the job practices of the present invention, earlier the periphery of topping bar is excavated, reduce the excavation space, having reduced the exposure sandstone flows in well, can prevent that unstable soil layer from emitting owing to excessive excavation causes the tunnel to collapse, guarantee construction safety, accelerated construction speed, for construction in later period is created very advantageous conditions.
The big section of inclined shaft is crossed anaplerotic sequence, the flow direction of not destroying peripheral water system behind the aquifer among the present invention, and particularly to compare expense cheap with " grouting curtain method " and schemes such as " freezing processes ", shortened the duration, improves workmanship and guaranteed construction safety.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is the shaft structure schematic diagram after the big section of inclined shaft is crossed aquifer pit shaft anti-leakage structure and construction method step of the present invention 20 and finished among the present invention.
Fig. 2 is the cross-sectional view of precipitation well.
Fig. 3 is inclined shaft and precipitation well facade SEA LEVEL VARIATION schematic diagram.
Fig. 4 is work plane drainage system schematic diagram.
Fig. 5 is precipitation WIH resource circulating system schematic diagram up and down.
Fig. 6 is the layout schematic diagram of precipitation well in construction method step two of the present invention and the step 4.
Fig. 7 is the shaft structure schematic diagram after construction method step six of the present invention is finished.
Fig. 8 is the shaft structure schematic diagram after construction method step seven of the present invention is finished.
Fig. 9 is the shaft structure schematic diagram after construction method step eight of the present invention is finished.
Figure 10 is the shaft structure schematic diagram after construction method step nine of the present invention is finished.
Figure 11 is the shaft structure schematic diagram after construction method step ten of the present invention is finished.
Figure 12 is the shaft structure schematic diagram after construction method step 11 of the present invention is finished.
Figure 13 is the shaft structure schematic diagram after construction method step 12 of the present invention is finished.
Figure 14 is the shaft structure schematic diagram after construction method step 13 of the present invention is finished.
Figure 15 is the shaft structure schematic diagram after construction method step 14 of the present invention is finished.
Figure 16 is the shaft structure schematic diagram after construction method step 15 of the present invention is finished.
Figure 17 is the shaft structure schematic diagram after construction method step 16 of the present invention is finished.
Figure 18 is the shaft structure schematic diagram after construction method step 17 of the present invention is finished.
Figure 19 is the shaft structure schematic diagram after construction method step 18 of the present invention is finished.
Figure 20 is the shaft structure schematic diagram after construction method step 19 of the present invention is finished.
Reference numeral: 1-steel pipe canopy, the 2-shape steel bracket, 2.1-arch support, 2.2-leftwall support, 2.3-RightWall support, 2.4-antiarch support, 3-preliminary bracing concrete, 3.1-arch ring sprayed mortar, 3.2-abutment wall sprayed mortar, 3.3-antiarch cast-in-situ concrete, 4-permanent support concrete, 4.1-abutment wall cast-in-situ concrete, 4.2-arch cast-in-situ concrete, 4.3-cast-in-situ concrete terrace, 5-precipitation well, 5.1-observation well, 5.2-pumped well, the 6-mine laneway, 7-inclined shaft tunnel center line, the 8-periphery of topping bar, in the middle part of 9-tops bar, the 10-leftwall part of getting out of a predicament or an embarrassing situation, the 11-RightWall part of getting out of a predicament or an embarrassing situation, the 12-water barrier, 12.1-antiarch water barrier, 12.2-abutment wall water barrier, 12.3-arch water barrier, the 13-filtrate, the 14-aqueduct, the 15-terrace, the 16-helically welded tube, 17-precipitation well filtrate, 18-arch ring sprayed mortar, the 19-ditch.
The specific embodiment
Embodiment is referring to shown in Figure 1, the big section of a kind of inclined shaft is crossed aquifer pit shaft anti-leakage structure, be the multilayer supporting and protection structure of mine laneway 6, comprise preliminary bracing and permanent support, described preliminary bracing comprises steel pipe canopy 1, shape steel bracket 2 and preliminary bracing concrete 3, described shape steel bracket 2 is by arch support 2.1, leftwall support 2.2, RightWall support 2.3 and antiarch support 2.4 are formed, described preliminary bracing concrete 3 is by arch ring sprayed mortar 3.1, abutment wall sprayed mortar 3.2 and antiarch cast-in-situ concrete 3.3 are formed
Be respectively equipped with arch water barrier 12.3 and abutment wall water barrier 12.2 between the preliminary bracing of arch, abutment wall and the permanent support, the downside of described antiarch support 2.4 is provided with drainage layer and antiarch water barrier 12.1 from the bottom to top, the water barrier 12 that described antiarch water barrier 12.1 and abutment wall water barrier 12.2 and arch water barrier 12.3 link into an integrated entity
Described permanent support is that concrete is built the arch supporting, and permanent support concrete 4 is made up of abutment wall cast-in-situ concrete 4.1, arch cast-in-situ concrete 4.2 and cast-in-situ concrete terrace 4.3.
Described arch ring sprayed mortar 3.1 and abutment wall sprayed mortar 3.2 are plain concretes that concrete grade is at least C25, and the thickness sum of its jet thickness and shape steel bracket is at least 300mm.
Described water barrier 12 is waterproof geotechnique layer of cloths.
Described antiarch cast-in-situ concrete 3.3, abutment wall cast-in-situ concrete 4.1 and arch cast-in-situ concrete 4.2 are at least the concrete of C30 for interpolation BR type enhancing waterproof agent, label, the thickness of described antiarch cast-in-situ concrete 3.3 is 300mm～600mm, and the thickness of described abutment wall cast-in-situ concrete 4.1 and arch cast-in-situ concrete 4.2 is at least 400mm.
Described drainage layer comprises that filtrate 13 and interval are embedded in the aqueduct 14 in the filtrate.
A kind ofly use the job practices that the big section of above-described inclined shaft is crossed the drainage water conservation of aquifer pit shaft anti-leakage structure, construction sequence is as follows:
Step 1: referring to shown in Figure 4, set up the work plane drainage system;
Step 2: referring to shown in Figure 6, along the test observation well 5.1 and pumped well 5.2 in the both sides elder generation construction precipitation well 5 of inclined shaft tunnel center line 7;
Step 3: referring to shown in Figure 5, the draw water clear water regulating reservoir of pipeline and precipitation well of construction pipe well;
Step 4: referring to shown in Figure 6, continue all the other precipitation wells of construction along the both sides of inclined shaft tunnel center line 7;
Step 5: referring to shown in Figure 3, use water pumper to precipitation well 5 drainage that draws water, through the drainage that draws water of precipitation well, groundwater table is down to below the base plate of work plane, reduces s highly as shown in FIG.;
Step 6: referring to shown in Figure 7, the brill of steel pipe canopy 1 dress construction in the preliminary bracing of inclines tunnel;
Step 7: referring to shown in Figure 8, use benching tunnelling method to carry out the excavation construction in pit shaft tunnel, at first the periphery 8 of topping bar is carried out excavation construction;
Step 8: referring to shown in Figure 9, the installation of arch support 2.1 comprises the welding of boring dress arch joist, laying dowel between reinforced mesh and adjacent two stands;
Step 9: referring to shown in Figure 10, at arch support 2.1 construction arch ring sprayed mortars 3.1;
Step 10: referring to shown in Figure 11, the excavation construction at the middle part 9 of topping bar;
Step 11: referring to shown in Figure 12, the excavation construction of the leftwall part 10 of getting out of a predicament or an embarrassing situation;
Step 12: referring to shown in Figure 13, leftwall support 2.2 is installed, leftwall support 2.2 is connected as a single entity with arch support 2.1, construction abutment wall sprayed mortar 3.2 on the on the left side wall bracket;
Step 13: referring to shown in Figure 14, the excavation construction of the RightWall part 11 of getting out of a predicament or an embarrassing situation;
Step 14: referring to shown in Figure 15, RightWall support 2.3 is installed, RightWall support 2.3 is connected as a single entity with arch support 2.1, on the right construction abutment wall sprayed mortar 3.2 on the wall bracket;
Step 15: referring to shown in Figure 16, the drainage layer is laid in the roadway surrounding rock bottom, buries aqueduct 14 in filtrate 13 underground;
Referring to shown in Figure 2, be provided with the helically welded tube 16 of placing along the borehole wall in the described precipitation well 5, uniform a plurality of inlet openings, the bottom of described helically welded tube 16, described inlet opening surface parcel nylon wire also uses waterproof silk thread colligation consolidation, in case foreign material clog the inlet opening, precipitation well filtrate 17 is filled up in helically welded tube 16 outsides in the borehole wall scope, the caliber of helically welded tube described in the present embodiment 16 is φ 325mm, wall thickness 6mm, uniform a plurality of inlet openings, 40m place, bottom of helically welded tube 16, its aperture is φ 25, is the 100mm pitch arrangement by density.
The described precipitation well 4 equidistant both sides that are evenly distributed on inclined shaft tunnel center line 7.
The construction sequence of described precipitation well comprises the rig type selecting, rig is in place with the sampling of adjustment, rock core, down well casing, fill out filtrate, well-flushing, examination and take out precipitation.
In mine design and shaft building process, should exploit green, ecological environmental protection and fwaater resources protection classify the overriding concern factor as." circular economy concept " of the construction of drainage water conservation will be rooted in the hearts of the people more in the deficientest area of water resource.Realize the coordinated development that coal resources development and use and ecology of mining areas are protected, for promoting that the development of national economy and Community health is significant.
Drainage water conservation among the present invention construction principle: (1) drainage is by to peripheral geological conditions and hydrologic regime detection analysis and precipitation calculation of parameter, set up surface drainage system, under the situation of artificial control, utilize stifled husky, the water guide technology of deep hole precipitation well crossover distance, water delivery step-down and work plane, moisture sandy gravel stratum is to the influence of mine safety in elimination mine construction and the manufacturing process, and its substance can be divided into drainage and two aspects of water delivery step-down.Wherein, drainage refers to be down to below the absolute altitude of mine engineering layer position by hydrophobic water level with the aquifer, or causes stable cone of depression, makes it local drainage, and aquifer water directly pours in work plane when avoiding opening up.Hydrophobic step-down refer to by hydrophobic with the aquifer water potential drop to the safe absolute altitude of design in advance, thereby alleviate or eliminate mine aquifer water in developing and manufacturing process and under effect of water pressure, destroy water barrier about it and pour in mine.Regulate inflow rate of mine water, improve the underground work condition and guarantee slope development safety.(2) the drainage water conservation is according near point drainage pump-out, work plane water yield, the underground hydrogeological conditions in ground and water resource demand and mode of occupation, sets up rational groundwater mining, surface water purification, characterization processes flow process and water resource recycling system.(3) according to the water conservation requirement, carry out the design of pit shaft antiseep support pattern.Mainly comprise preliminary bracing, water barrier, permanent support.The purpose of preliminary bracing is fast by moisture sandy gravel stratum, prevents from that the tunnel from collapsing to emit, and guarantees construction safety, for construction in later period creates conditions.Water barrier: after having crossed the preliminary bracing of tunnel, aquifer, full section is laid the waterproof geotextiles, permanent support before the permanent support: adopt strong concrete to build the arch supporting, add BR series enhancement mode waterproof agent in the concrete; Lay the drainage layer of being made up of rubble and aqueduct under the antiarch support, described aqueduct can use PPC plastics porous aqueduct, builds antiarch cast-in-situ concrete again to the tunnel design elevation.
After the present invention's construction is finished; according to well point drainage pump-out, work plane water yield, the underground hydrogeological conditions in ground and water resource demand and mode of occupation; set up rational groundwater mining, surface water purification, characterization processes flow process and water resource recycling system; realized the coordinated development of ecological environmental protection, fwaater resources protection and ecology of mining areas protection; be applied in the shaft building work progress with green exploitation and fwaater resources protection theory, realize green shaft building construction.As shown in Figure 5; set up in the slope construction process underground water well circulating system up and down, formed the Comprehensive Construction that a cover satisfies the protection water resource, the labor safety condition of face of land construction is better; tissue flexibly; polluted source not, the water that construction period takes out can carry out reuse by simple facility, does not influence peripheral urbanite water consumption; do not destroy water system; safety is secure, low in the pollution of the environment, good in economic efficiency, is convenient to control, is convenient to implement the protection to water resource.
The invention solves the big section of inclined shaft and pass through a glutenite aquifer water conservation construction technology difficult problem, and cross the construction of aqueous stream sand bed water conservation successful experience is provided for similar from now on.
Claims (9)
1. the big section of inclined shaft is crossed aquifer pit shaft anti-leakage structure, be the multilayer supporting and protection structure of mine laneway (6), comprise preliminary bracing and permanent support, it is characterized in that: described preliminary bracing comprises steel pipe canopy (1), shape steel bracket (2) and preliminary bracing concrete (3), described shape steel bracket (2) is by arch support (2.1), leftwall support (2.2), RightWall support (2.3) and antiarch support (2.4) are formed, described preliminary bracing concrete (3) is by arch ring sprayed mortar (3.1), abutment wall sprayed mortar (3.2) and antiarch cast-in-situ concrete (3.3) are formed
Be respectively equipped with arch water barrier (12.3) and abutment wall water barrier (12.2) between the preliminary bracing of arch, abutment wall and the permanent support, the downside of described antiarch support (2.4) is provided with drainage layer and antiarch water barrier (12.1) from the bottom to top, the water barrier (12) that described antiarch water barrier (12.1) and abutment wall water barrier (12.2) and arch water barrier (12.3) link into an integrated entity
Described permanent support is that concrete is built the arch supporting, and permanent support concrete (4) is made up of abutment wall cast-in-situ concrete (4.1), arch cast-in-situ concrete (4.2) and cast-in-situ concrete terrace (4.3).
2. the big section of inclined shaft according to claim 1 is crossed aquifer pit shaft anti-leakage structure, it is characterized in that: described arch ring sprayed mortar (3.1) and abutment wall sprayed mortar (3.2) are the plain concretes that concrete grade is at least C25, and the thickness sum of its jet thickness and shape steel bracket is at least 300mm.
3. the big section of inclined shaft according to claim 1 is crossed aquifer pit shaft anti-leakage structure, it is characterized in that: described water barrier (12) is waterproof geotechnique layer of cloth.
4. the big section of inclined shaft according to claim 1 is crossed aquifer pit shaft anti-leakage structure, it is characterized in that: described antiarch cast-in-situ concrete (3.3), abutment wall cast-in-situ concrete (4.1) and arch cast-in-situ concrete (4.2) are at least the concrete of C30 for interpolation BR type enhancing waterproof agent, label, the thickness of described antiarch cast-in-situ concrete (3.3) is 300mm～600mm, and the thickness of described abutment wall cast-in-situ concrete (4.1) and arch cast-in-situ concrete (4.2) is at least 400mm.
5. the big section of inclined shaft according to claim 1 is crossed aquifer pit shaft anti-leakage structure, it is characterized in that: described drainage layer comprises that filtrate (13) and interval are embedded in the aqueduct (14) in the filtrate.
6. an application is crossed the job practices of the drainage water conservation of aquifer pit shaft anti-leakage structure according to any big section of described inclined shaft of claim 1～5, it is characterized in that construction sequence is as follows:
Step 1: set up the work plane drainage system;
Step 2: along the test observation well (5.1) and pumped well (5.2) in both sides elder generation's construction precipitation wells (5) of inclined shaft tunnel center line (7);
Step 3: the draw water clear water regulating reservoir of pipeline and precipitation well of construction pipe well;
Step 4: continue all the other precipitation wells of construction along the both sides of inclined shaft tunnel center line (7);
Step 5: use water pumper to precipitation well (5) drainage that draws water, through the drainage that draws water of precipitation well, groundwater table is down to below the base plate of work plane;
Step 6: the brill of steel pipe canopy (1) dress construction in the preliminary bracing of inclines tunnel;
Step 7: use benching tunnelling method to carry out the excavation construction in pit shaft tunnel, at first the periphery of topping bar (8) is carried out excavation construction;
Step 8: the installation of arch support (2.1) comprises the welding of boring dress arch joist, laying dowel between reinforced mesh and adjacent two stands;
Step 9: at arch support (2.1) construction arch ring sprayed mortar (3.1);
Step 10: the excavation construction at the middle part (9) of topping bar;
Step 11: the excavation construction of the leftwall part (10) of getting out of a predicament or an embarrassing situation;
Step 12: leftwall support (2.2) is installed, at support construction abutment wall sprayed mortar (3.2);
Step 13: the excavation construction of the RightWall part (11) of getting out of a predicament or an embarrassing situation;
Step 14: RightWall support (2.3) is installed, at support construction abutment wall sprayed mortar (3.2);
Step 15: the drainage layer is laid in the roadway surrounding rock bottom, buries aqueduct (14) in filtrate (13) underground;
Step 10 six: lay antiarch water barrier (12.1) at the drainage layer, described antiarch water barrier (12.1) extends to abutment wall sprayed mortar surface;
Step 10 seven: antiarch support (2.4) is installed and is built antiarch cast-in-situ concrete (3.3) at antiarch water barrier (12.1);
Step 10 eight: abutment wall water barrier (12.2) is laid on the surface at abutment wall sprayed mortar (3.2), arch water barrier (12.3) is laid on surface at arch ring sprayed mortar (3.1), and abutment wall water barrier (12.2), arch water barrier (12.3) and antiarch water barrier (12.1) are connected as one;
Step 10 nine: in the surface construction abutment wall cast-in-situ concrete (4.1) of abutment wall water barrier (12.2), in the surface construction arch cast-in-situ concrete (4.2) of arch water barrier (12.3);
Step 2 ten: surface construction cast-in-situ concrete terrace (4.3) and ditch (19) in antiarch cast-in-situ concrete (3.3) make the permanent support of various piece be linked to be integral body.
7. the big section of inclined shaft according to claim 6 is crossed the job practices of the drainage water conservation of aquifer pit shaft anti-leakage structure, it is characterized in that: be provided with the helically welded tube (16) of placing along the borehole wall in the described precipitation well (5), uniform a plurality of inlet openings, the bottom of described helically welded tube (16), described inlet opening surface parcel nylon wire also uses waterproof silk thread colligation consolidation, and precipitation well filtrate (17) is filled up in helically welded tube (16) outside in the borehole wall scope.
8. cross the job practices of the drainage water conservation of aquifer pit shaft anti-leakage structure according to claim 6 or the big section of 7 described inclined shafts, it is characterized in that: the equidistant both sides that are evenly distributed on inclined shaft tunnel center line (7) of described precipitation well (4).
9. cross the job practices of the drainage water conservation of aquifer pit shaft anti-leakage structure according to claim 6 or the big section of 7 described inclined shafts, it is characterized in that: the construction sequence of described precipitation well comprises the rig type selecting, rig is in place with adjustment, rock core sampling, down well casing, fill out filtrate, well-flushing, examination and take out precipitation.
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| CN105804772A (en) * | 2016-05-05 | 2016-07-27 | 中铁第勘察设计院集团有限公司 | Active and passive combined waterproof structure for tunnel |
| CN106014344A (en) * | 2016-06-07 | 2016-10-12 | 中国矿业大学(北京) | Environment-friendly water-holding coal and uranium coordinated mining system and application method thereof |
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| CN103498685A (en) * | 2013-10-15 | 2014-01-08 | 中国矿业大学(北京) | Retaining and protecting device for pressure relief windows of base plate and two edges of extremely soft rock roadway |
| CN103498685B (en) * | 2013-10-15 | 2016-06-08 | 中国矿业大学(北京) | Very soft rock roadway base plate and two helps release window supporting device |
| CN105443143A (en) * | 2016-01-08 | 2016-03-30 | 陕西开拓建筑科技有限公司 | Tunnel support device of coal mine goaf and construction method thereof |
| CN105804772A (en) * | 2016-05-05 | 2016-07-27 | 中铁第勘察设计院集团有限公司 | Active and passive combined waterproof structure for tunnel |
| CN106014344A (en) * | 2016-06-07 | 2016-10-12 | 中国矿业大学(北京) | Environment-friendly water-holding coal and uranium coordinated mining system and application method thereof |
| CN106014344B (en) * | 2016-06-07 | 2017-05-03 | 中国矿业大学(北京) | Environment-friendly water-holding coal and uranium coordinated mining system and application method thereof |
| CN113027485A (en) * | 2021-03-19 | 2021-06-25 | 中国恩菲工程技术有限公司 | Roadway support device and roadway support method |
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