CN108411924B - Construction method for mine pit wall safety protection - Google Patents
Construction method for mine pit wall safety protection Download PDFInfo
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- CN108411924B CN108411924B CN201810135278.8A CN201810135278A CN108411924B CN 108411924 B CN108411924 B CN 108411924B CN 201810135278 A CN201810135278 A CN 201810135278A CN 108411924 B CN108411924 B CN 108411924B
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000011435 rock Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 13
- 241000196324 Embryophyta Species 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000009958 sewing Methods 0.000 claims description 8
- 235000015097 nutrients Nutrition 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 6
- 238000009435 building construction Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Botany (AREA)
- Environmental Sciences (AREA)
- Revetment (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
A construction method for mine pit wall safety protection comprises pit wall safety protection measures of a building construction main body structure construction area and pit wall safety protection measures of a non-construction area, and the concrete steps of the building construction main body structure construction area are as follows: a. cleaning dangerous stones, gravels and weeds of rock walls in the area where the main building structure is located, and measuring and positioning anchor rod holes of the safety net; b. drilling the anchor rod; c. mounting an anchor rod; d. installing a supporting steel rope; e. installing a grid net; f. and installing a steel rope net. The method has the advantages that the safety net, the vegetation ecological concrete and the reconstruction of the abandoned mine pit are organically combined, the construction safety of the abandoned mine pit house is met, the call of national ecological restoration and urban repair, namely urban double repair, is responded, and the method adapts to the trend of development of the building industry towards environmental protection and sustainable development.
Description
Technical Field
The invention relates to a construction method for rock wall safety protection, in particular to a construction method for mine pit wall safety protection.
Background
Abandoned mines are abandoned lands generated after the mining activities are finished, and the number and the scale of the abandoned pits gradually increase along with time. In the mining process, the original ecological system is destructively damaged, land occupied by a dump and the like is basically reclaimed before ore closing, and waste open pit is left as a direct product after ore closing, so that a large amount of land resources are damaged in an excavation and damage mode. Some abandoned mine pits are also accompanied by high and steep slopes and accumulated water, thereby causing negative effects to ecological environment and landform landscape in different degrees. Therefore, the comprehensive treatment and reutilization of the abandoned open pit are the expression of the implementation cycle development and the green development, and are sustainable utilization integrating ecological, social and economic benefits.
In recent years, abandoned mines are gradually paid attention and attention by the nation with the identity of the abandoned places of the mining industry, and the nation sets up relevant policy measures to encourage the reclamation and reuse thereof. The house is built in the abandoned mine pit, and the abandoned mine pit is built into a tourist base, which is an effective measure for treating and recycling the mine pit.
Disclosure of Invention
The invention solves the technical problems in the prior art and provides a construction method for mine pit wall safety protection, which can be used for building houses in waste mine pits, combines the temporary safety protection measures of the pit wall with the permanent safety protection measures of the pit wall, is ecological and environment-friendly and accords with the sustainable development direction.
In order to solve the technical problems, the invention provides a pit wall safety protection construction method for building a waste pit house, which comprises pit wall safety protection measures of a main structure construction area of the house building and pit wall safety protection measures of a non-construction area, and comprises the following steps:
the pit wall safety protection measures of the building construction main body structure construction area are as follows:
step ⑴, cleaning dangerous stones, gravels and weeds in the rock wall, and measuring and positioning anchor rod holes of the safety net;
⑵, drilling the anchor rod, wherein the depth of the anchor rod is 5-10cm greater than the depth of the designed hole, cleaning accumulated water and rock debris in the hole, and plugging the anchor rod hole with a wooden plug;
⑶, mounting an anchor rod, after the anchor rod is inserted, injecting cement mortar into the hole, tamping once every 20-30cm, moving the anchor rod to fully inject the mortar;
⑷, mounting the support steel rope, namely, horizontally and vertically adopting phi 16 to support the steel rope, wherein the mounting sequence is that the support steel rope is fixed on the anchor rod by using a matched rope clamp from one end of the steel rope, after the locking is detected, the support rope sequentially passes through the exposed hoof-shaped lantern ring of the anchor rod until the other end of the anchor rod, and finally the anchor rod is locked in the same way;
⑸, mounting grid nets, paving and hanging the grid nets from top to bottom, wherein the overlapping width between the grid nets is not less than 10cm, and the stitching between the two grid nets and the connection between the grid nets and the supporting ropes are tied by iron wires with the diameter of 2.2 mm;
⑹, installing a steel rope net, laying the steel rope net from top to bottom, wherein the steel rope net should be tightly attached to the rock wall surface as much as possible in the laying process, performing tensioning and sewing on the steel rope net and the supporting ropes at the periphery by adopting a rope sewing method, and finally, fixedly connecting the two ends of the sewing rope with the supporting ropes by two rope clamps respectively.
(II) pit wall safety protection measures of the area where the main structure is not built:
⑴, performing base course treatment, cleaning dangerous stones, gravels and weeds of the rock wall, and performing leveling treatment on the surface of the rock wall according to the design shape;
⑵, arranging a rock wall area template according to the design modeling, fixing the template in a bar planting mode, wherein the bar planting depth and the spacing can be arranged according to the design requirement by adopting 16mm or 18mm diameter secondary deformed steel bar;
⑶, pouring ecological concrete, namely pouring the ecological concrete to a specified area in a chute arrangement mode;
and step ⑷, filling the nutrient soil slurry and the grass seeds, and feeding the nutrient soil slurry mixed with the plant seeds into the gaps of the ecological concrete in a chute arrangement mode.
By adopting the technical scheme, measures of attaching a safety net and planting vegetation ecological concrete are taken, and a safety protection net is arranged in a rock wall area to avoid falling of mountain broken stones in the construction process aiming at the rock wall of the construction area where the house structure is located, so that the safety of the construction process is ensured; planting the vegetation ecological concrete in the rock wall area at the rock wall of the non-main structure construction area, on one hand, ensuring the stability of rock mass, on the other hand, realizing the growth of plants by utilizing the gaps in the vegetation ecological concrete, and playing the multiple purposes of purifying the water seepage of the rock wall, improving the landscape of the rock wall and perfecting the ecological system of the abandoned mine pit.
Aiming at the transformation of the abandoned mine pit, the invention provides a brand-new transformation concept of the abandoned mine pit, organically combines temporary safety protection and permanent ecological safety protection, and is beneficial to the safety control of the construction process and the restoration of an ecological system of the abandoned mine pit; the construction method can be used for building in the abandoned mine pit, thereby combining temporary safety protection measures and permanent protection ecological restoration measures, ensuring the safety of the construction process and achieving the aim of restoring an ecological system. The abandoned open pit is large in area, the safety protection net is adopted in a house construction area as a temporary safety protection measure for the pit wall, and the plant-growing ecological concrete is poured on the rock wall in a non-construction area, so that the modeling can be made to increase the artistic aesthetic feeling, and the stable rock wall of the ecological system can be restored.
In conclusion, the construction method is green and environment-friendly, accords with the sustainable development concept, and can effectively solve the problem of pit wall safety protection in the reconstruction of the abandoned mine pit.
Drawings
Fig. 1 is a plan layout view of an area where a main structure for house construction of a abandoned mine pit is located and an area where a main structure for house construction of a non-house is located, according to the present invention.
Fig. 2 is a front view of a pit wall safety protection net in an area where a main structure of house construction is located.
FIG. 3 is a cross-sectional view of a pit wall safety protection net in an area where a main structure of a house building is located according to the present invention
FIG. 4 is a detail view of the anchor rod for the safety protection of the area where the main structure of the building construction is located
FIG. 5 is a front view of the wall protection of the area where the non-house-building main structure is located according to the present invention
FIG. 6 is a side view of the wall protection of an area where a non-house built body structure is located according to the present invention
In the attached drawings, 1, a support steel rope; 2. an anchor rod; 3. a wire rope net; 4. a grid net; 5. a rock wall surface; 6. a horseshoe anchor ring; 7. cement mortar; 8. a waste pit; 9. building a region where the main structure is located; 10. the area where the main body structure is not built is located; 11. secondary twisted steel bars; 12. a wooden box; 13. round steel pipes; 14. no. 8 channel steel; 15. a chute; 16. a butterfly buckle; 17. and (4) planting ecological concrete.
Detailed Description
The invention is further explained in detail below with reference to the drawings and examples
The pit wall safety protection for the abandoned mine pit 8 is divided into two areas, namely, the pit wall safety protection for the area 9 where the main building structure is located, and the pit wall safety protection for the area 10 where the main non-building structure is located.
Aiming at the pit wall safety protection of the area 9 where the house building main body structure is located, the steps are as follows:
⑴, cleaning dangerous stones, gravels and weeds on the rock wall 5, and measuring and positioning holes of the anchor rod 2, wherein the longitudinal and transverse distances of the holes of the anchor rod 2 are 4.5 m;
the specific measurement positioning implementation mode is as follows: a total station is utilized to determine a reference eye from a firm rock near one angular point according to the design size and the combination of the site topography, and the positions of holes of other anchor rods 2 are determined at intervals of 4.5m in the longitudinal and transverse directions by taking the reference eye as a starting point, and obvious marks are made.
And ⑵, drilling the anchor rod 2, and drilling holes at the hole marks of the anchor rod 2 from top to bottom, wherein the drilling depth is 260 cm.
After the 2 holes of the anchor rod are drilled, accumulated water and rock powder in the holes are cleaned up, and the drilled 2 holes of the anchor rod are plugged by using a wooden plug to prevent broken earth and rock from falling into the holes and blocking the holes.
⑶, mounting the anchor rod 2, before the anchor rod 2 is inserted, injecting cement mortar 7 with a certain mixing ratio and a proper amount into the insertion hole to be paved, then inserting the anchor rod 2, then injecting the cement mortar 7 into the hole, tamping every 20-30cm, frequently moving the anchor rod 2 to fill the mortar 7 until the hole opening position, and finally sleeving the anchor rod 2 with the anchor rod hoof-shaped lantern ring 6 at the exposed end of the anchor rod 2.
And ⑷, installing the supporting steel ropes 1, wherein the diameter of the horizontal and vertical supporting steel ropes 1 is phi 16, the installation sequence is that starting from one end, the supporting steel ropes 1 are fixed on the anchor rod 2 by using matched rope clamps, after locking is to be detected, the supporting steel ropes 1 sequentially penetrate through the exposed hoof-shaped lantern rings 6 of the anchor rod 2 until the other end is reached, and finally, the same locking is carried out.
⑸, installing grid nets 4, paving and hanging the grid nets 4 from top to bottom, wherein the lapping width between the grid nets is not less than 10cm, the stitching between the two grid nets and the connection between the grid nets and the supporting ropes are tied by iron wires with the diameter of 2.2mm, after the steel rope net 1 is paved, reversely turning back and fixing the grid nets 4 at the paving and hanging periphery, and the lapping width is not less than 20 cm.
⑹, installing the steel rope net 3, laying the steel rope net 3 from top to bottom, wherein the steel rope net is tightly attached to the slope surface as much as possible in the laying process, the laying unit grid is 4mx4m, sewing ropes with the diameter of 8mm are adopted to be sewn with the tension sides of the support ropes at the periphery, and two ends of each sewing rope are fixedly connected with the support ropes by two rope clamps.
For the pit wall safety protection of the area 10 where the main structure is not built, the following steps are performed:
step ⑴, cleaning dangerous stones, gravels and weeds on the rock wall 5, and positioning the contour line of the designed shape;
step ⑵, drilling before bar planting, namely, drilling the secondary twisted steel 11 with the diameter of 16mm along the edge of the contour line of the design shape by using an electric hammer, wherein the bar planting depth is not less than 15D (namely 240 mm), and the bar planting distance is not more than 500 mm;
⑶, manufacturing a wood box 12 according to design modeling, using a round steel tube 13 with the diameter of 48mm as a back edge, locking the back edge by using a butterfly buckle 16, fixing the bottom of the box by using a support made of No. 8 channel steel 14, fixing the support on a rock wall by using a bar planting mode, planting bars synchronously in a step ⑵, and welding the steel bars and the support to meet the requirement of single-side welding for 10D length;
step ⑷, arranging a chute 15, conveying the vegetation ecological concrete 17 to the wood box 12, pouring the ecological concrete, and pouring the ecological concrete to a designated area by the chute arrangement;
and (5) filling the nutrient soil slurry and the grass seeds, and feeding the nutrient soil slurry mixed with the plant seeds into gaps of the ecological concrete in a chute-arranging mode.
Claims (4)
1. A construction method for mine pit wall safety protection is characterized in that: the method comprises the following steps:
a. cleaning dangerous stones, gravels and weeds of rock walls in the area where the main building structure is located, and measuring and positioning anchor rod holes of the safety net;
b. drilling the anchor rod, wherein the depth of the drilled hole is 5-10cm greater than the depth of the designed hole, cleaning accumulated water and rock debris in the hole, and plugging the anchor rod hole by using a wood plug;
c. mounting an anchor rod, after the anchor rod is inserted, injecting cement mortar into the hole, tamping once every 20-30cm, and moving the anchor rod to fully fill the mortar;
d. the supporting steel ropes are installed, the supporting steel ropes are fixed to the anchor rod by using matched rope clamps from one end of each supporting steel rope, after the locking is checked, the supporting ropes sequentially penetrate through the exposed hoof-shaped lantern rings of the anchor rod until the other end of each supporting steel rope is locked, and finally the supporting steel ropes are locked in the same way;
e. installing grid nets, paving and hanging the grid nets from top to bottom, wherein the overlapping width between the grid nets is not less than 10cm, and the stitching between the two grid nets and the connection between the grid nets and the supporting ropes are bound by iron wires;
f. installing a steel rope net, laying the steel rope net from top to bottom, enabling the steel rope net to be tightly attached to the rock wall surface in the laying process, performing tensioning and sewing on the steel rope net and the supporting ropes at the periphery by adopting a rope sewing method, and finally fixedly connecting two ends of each sewing rope with the supporting ropes by using two rope clamps;
the construction method of the rock wall of the area where the main body structure is not built for the house specifically comprises the following steps:
g. performing base layer treatment, namely cleaning dangerous stones, broken stones and weeds of the rock wall in the area where the non-house building main body structure is located, and performing leveling treatment on the surface of the rock wall according to the design shape;
h. arranging a template in a rock wall area according to design modeling, fixing the template in a bar planting mode, and arranging the bar planting depth and the bar planting distance according to design requirements;
i. pouring ecological concrete, and pouring the ecological concrete to a specified area in a chute arrangement mode;
j. and filling the nutrient soil slurry and the grass seeds, and feeding the nutrient soil slurry mixed with the plant seeds into the gaps of the ecological concrete in a chute manner.
2. The construction method of mine pit wall safety protection according to claim 1, characterized in that: in the step d, the supporting steel rope adopts a supporting steel rope of phi 16.
3. The construction method of mine pit wall safety protection according to claim 1, characterized in that: in step e, the diameter of the iron wire is 2.2 mm.
4. The construction method of mine pit wall safety protection according to claim 2, characterized in that: in the step h, the bar planting adopts two-stage deformed steel bars with the diameter of 16mm or 18 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135278.8A CN108411924B (en) | 2018-02-09 | 2018-02-09 | Construction method for mine pit wall safety protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135278.8A CN108411924B (en) | 2018-02-09 | 2018-02-09 | Construction method for mine pit wall safety protection |
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| CN108411924A CN108411924A (en) | 2018-08-17 |
| CN108411924B true CN108411924B (en) | 2020-03-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2615542A1 (en) * | 1987-05-22 | 1988-11-25 | Peter Steiner | DEVICE FOR STABILIZING SLOPES AND SLOPES AGAINST INSTABILITIES OF SURFACE LAYERS AND CLOSE TO SURFACE |
| CN102425181A (en) * | 2011-12-26 | 2012-04-25 | 杭州市园林绿化工程有限公司 | Side slope greening restoration method |
| CN104110015A (en) * | 2014-07-30 | 2014-10-22 | 中国水利水电第十四工程局有限公司 | Tunnel safety protection net and installation method thereof |
| CN105297745A (en) * | 2014-07-18 | 2016-02-03 | 青岛润国生态科技发展有限公司 | Protection method for high and steep side slope ecological restoration technology |
| CN105569059A (en) * | 2016-02-29 | 2016-05-11 | 中铁隧道集团有限公司 | Passive protective net and installation method thereof |
| CN106638634A (en) * | 2017-02-09 | 2017-05-10 | 杭州江润科技有限公司 | Road rock slope vine ecological protection structure and construction method |
-
2018
- 2018-02-09 CN CN201810135278.8A patent/CN108411924B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2615542A1 (en) * | 1987-05-22 | 1988-11-25 | Peter Steiner | DEVICE FOR STABILIZING SLOPES AND SLOPES AGAINST INSTABILITIES OF SURFACE LAYERS AND CLOSE TO SURFACE |
| CN102425181A (en) * | 2011-12-26 | 2012-04-25 | 杭州市园林绿化工程有限公司 | Side slope greening restoration method |
| CN105297745A (en) * | 2014-07-18 | 2016-02-03 | 青岛润国生态科技发展有限公司 | Protection method for high and steep side slope ecological restoration technology |
| CN104110015A (en) * | 2014-07-30 | 2014-10-22 | 中国水利水电第十四工程局有限公司 | Tunnel safety protection net and installation method thereof |
| CN105569059A (en) * | 2016-02-29 | 2016-05-11 | 中铁隧道集团有限公司 | Passive protective net and installation method thereof |
| CN106638634A (en) * | 2017-02-09 | 2017-05-10 | 杭州江润科技有限公司 | Road rock slope vine ecological protection structure and construction method |
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| CN108411924A (en) | 2018-08-17 |
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