CN1884718A - Support-anchor combined protection and harness method for dangerous rock - Google Patents
Support-anchor combined protection and harness method for dangerous rock Download PDFInfo
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- CN1884718A CN1884718A CN 200610054335 CN200610054335A CN1884718A CN 1884718 A CN1884718 A CN 1884718A CN 200610054335 CN200610054335 CN 200610054335 CN 200610054335 A CN200610054335 A CN 200610054335A CN 1884718 A CN1884718 A CN 1884718A
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- 239000011435 rock Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004873 anchoring Methods 0.000 claims abstract description 20
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 230000037396 body weight Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000007429 general method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 239000004575 stone Substances 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a dangerous rock support-anchor support method, which comprises: (1), based on initial control structural surface, initially selecting the anchoring part of anchor rod; (2), checking the real control structural surface of dangerous rock; (3), fixing the stable rock surround region of dangerous rock; (4), fixing the gravity center position of dangerous rock; (5), fixing the position of support structure; (6), adjusting the anchor pat of anchor rod, and fixing the length of anchor part, length of anchor rod and the distance of anchor rod; (7), distributing the load force of support structure and anchor rod; (8), based on general method, obtaining said invention. The invention can fully utilize the advantages of support technique and anchoring technique, with high benefits.
Description
Technical field
The invention belongs to the hazards control field, especially relate to a kind of support-anchor combined protection and harness method for dangerous rock.
Background technology
Crag (perilous rock) is meant and is positioned at the rock block and the combination thereof of being cut less stable on cliff or the abrupt slope by many groups rock mass discontinuity.Crag is one of main geologic hazard type of China, have quantity many, distribute wide, destroy sudden strong, cause characteristics such as the calamity consequence is serious, just surplus having 50,000 as the reservoir area of Three Gorges, the life security and the about 3,000,000,000 yuans property loss that are threatening ten thousand people surplus in the of 80.In the crag that it has been established that, 80% belongs to draw to cut and topples over type crag (Fig. 1, Fig. 2) and the drawing crack type crag (Fig. 3, Fig. 4) that falls.Therefore, follow the crag damage feature, effectively carry out the prevention and cure project design, for guaranteeing the people life property safety, significant.The purpose of administering crag is to eliminate crag and destroys the potential safety hazard that resident, road, house, urban operating mechanism etc. below cliff or the abrupt slope are caused, the natural ecological environment on protection cliff or abrupt slope.
So far, still there is not special crag prevention and cure project design specifications both at home and abroad, only the technical system that crag is administered has been proposed more all sidedly in (DB50/5029-2004) in Chongqing City's provincial standard " hazards control engineering design standard ", comprise that initiatively Prevention Technique is (as anchoring, support, remove, grouting etc.), the passive protection technology is (as stone cut off wall, stone blocking net, block stone fence etc.) and active-passive associating Prevention Technique (administer and stone cut off wall as crag, stone blocking nets etc. are united use) three aspects, provided the spacing of anchor pole (or anchor cable) in detail, the inclination angle size, anchoring section length, reinforcing bar is selected for use, anchor head is provided with, braced structures type and construction material, grouting pressure, the stone cut off wall size, stone blocking net energy level height, the position of blocking, construction technology, or the like.
There is following significant deficiency in above crag improvement technology:
The first, have the method for designing Special attention will be given to construction measure that crag is administered technology now, because the master control architecture face at crag rear portion is difficult to accurately determine, causing the crag support structure position to choose anchoring section unreasonable, anchor pole (or anchor cable) is difficult to determine, the specific aim that directly causes crag to be prevented and treated is poor, regulation effect is difficult to guarantee, crag is administered and still is in subjective by rule of thumb design point at present.
The second, have proposition " support-anchor combined support technology " in the crag improvement technology now, therefore, do not see " crag support-anchor combined supporting method for designing " so far as yet, the crag body that part adopts support technology and anchoring to administer simultaneously, support with anchoring inharmonious, there are 80～90% error in resolution and actual conditions, the support load that the volume that braced structures often occurs is excessive, consumptive material is many, waste is big, self stability is poor, bear is not clear, and the anchoring section of anchor pole (or anchor cable) is unclear, anchoring load not clear.
Summary of the invention
Topple over the fall failure mode of type crag of type crag and drawing crack and all have the characteristics of toppling over and falling simultaneously at drawing to cut, the present invention combines braced structures and anchoring measure.Its technical scheme is: a kind of support-anchor combined protection and harness method for dangerous rock may further comprise the steps:
1) according to just deciding the anchoring position that the master control architecture face is tentatively chosen anchor pole (or anchor cable);
2) search the actual master control architecture face of determining crag;
3) determine stable country rock zone behind the crag body,, determine that the rock mass of its rear portion backer's body one side is stable country rock promptly according to the appearance position of actual master control architecture face, and with its stress layer as anchor pole (or anchor cable) (bearing stratum);
4) determine the position of centre of gravity of crag body;
5) determine the position of crag braced structures;
6) adjust the anchoring position of just fixed anchor pole (or anchor cable), and require to draft anchoring section length, anchor pole (or anchor cable) length, anchor pole (or anchor cable) spacing according to structure;
7) the stressed size of carrying of distribution crag braced structures and anchor pole (or anchor cable);
8) design obtains crag support-anchor combined supporting administration structure in a conventional manner.
The described method of determining actual master control architecture face of searching is: the utilization rock drill is implemented the overlength boring of some on the crag body, and removal of core is checked the appearance position of determining the actual master control architecture face of rock mass in the rock core; The length of overlength boring surpasses just decides master control architecture face 5～8m, and its quantity is at least 3.
When determining the position of crag braced structures, make its center of effort be arranged on the crag body weight heart outside 2～5m.
The distribution of the stressed size of carrying of crag braced structures and anchor pole (or anchor cable) distributes to according to 70～80% of all vertical forces that crag braced structures, all the other vertical forces and pulling force are distributed to anchor pole or (anchor cable) distributes.
Advantage of the present invention is: 1, by anchor pole (or anchor cable) and the organic formation of braced structures two parts monomer structure, the pulling force, moment and the part gravity that make anchor pole (or anchor cable) resist the crag body to topple over, and bear the part deadweight of crag body with braced structures (formations such as available steel concrete or plain concrete, mortar flag stone, cemented rock), can bring into play the carrying advantage of every part administration structure simultaneously; 2, can determine support structure position and anchoring section position and stressed distribution thereof more exactly, avoid the blindness in the design; 3, workable, practical value is big.
Description of drawings
Fig. 1 topples over the type crag for drawing to cut;
Fig. 2 topples over type crag photo for drawing to cut;
Fig. 3 is the drawing crack type crag that falls;
Fig. 4 is the drawing crack type crag photo that falls;
Fig. 5 is a flow process of the present invention;
Fig. 6 is crag support-anchor combined supporting administration structure.
In the accompanying drawing, crag body 1, master control architecture face 2, anchor pole (or anchor cable) 3, braced structures 4, country rock 5, the crag body weight heart 0.
The specific embodiment
Support-anchor combined protection and harness method for dangerous rock may further comprise the steps:
1) the crag master control architecture face of determining according to the geological mapping data (just deciding the master control architecture face) is tentatively chosen the anchoring position of anchor pole (or anchor cable);
2) search the actual master control architecture face of determining crag: the utilization rock drill is implemented the overlength boring of some on the crag body, and removal of core is checked the appearance position of determining the actual master control architecture face of rock mass in the rock core; The length of overlength boring surpasses just decides master control architecture face 5～8m, and its quantity is at least 3.
3) determine stable country rock zone behind the crag body,, determine that the rock mass of its rear portion backer's body one side is stable country rock promptly according to the appearance position of actual master control architecture face, and with its stress layer as anchor pole (or anchor cable) (bearing stratum);
4) determine the position of centre of gravity of crag body;
5) determine the position of crag braced structures.When determining the position of crag braced structures, make its center of effort be arranged on crag body weight heart outside 2～5m.
6) adjust the anchoring position of just fixed anchor pole (or anchor cable), and require to draft anchoring section length, anchor pole (or anchor cable) length, anchor pole (or anchor cable) spacing according to structure;
7) the stressed size of carrying of reasonable distribution crag braced structures and anchor pole (or anchor cable), the distribution of the stressed size of carrying of crag braced structures and anchor pole (or anchor cable) distribute to according to 70～80% of all vertical forces that braced structures, all the other vertical forces and pulling force are distributed to anchor pole or (anchor cable) distributes;
8) design acquisition crag support-anchor combined supporting administration structure at last in a conventional manner.
When the crag braced structures can not meet the demands its body stability owing to the orographic condition restriction, can adopt the supplementary structure measure to guarantee the stability of braced structures, the contact surface of braced structures top and crag and the ground of bottom are answered chipping (or introversion is step-like) and are satisfied requirement for bearing capacity.
Crag disaster quantity is many within Chinese territory; can reach billions of; disaster is serious; the present invention can strengthen " crag support-anchor combined supporting " validity, specific aim, reasonability in the control crag; eliminate crag and destroy the potential safety hazard that resident, road, house, urban operating mechanism etc. below cliff or the abrupt slope are caused, protect the natural ecological environment on cliff or abrupt slope simultaneously, therefore; application prospect is extremely extensive, will produce huge social, energy economy ﹠ environment benefit.
Claims (6)
1, a kind of support-anchor combined protection and harness method for dangerous rock may further comprise the steps:
1) according to just deciding the anchoring position that the master control architecture face is tentatively chosen anchor pole (or anchor cable);
2) search the actual master control architecture face of determining crag;
3) determine stable country rock zone behind the crag body,, determine that the rock mass of its rear portion backer's body one side is stable country rock promptly according to the appearance position of actual master control architecture face, and with its stress layer as anchor pole (or anchor cable) (bearing stratum);
4) determine the position of centre of gravity of crag body;
5) determine the position of crag braced structures;
6) adjust the anchoring position of just fixed anchor pole (or anchor cable), and require to draft anchoring section length, anchor pole (or anchor cable) length, anchor pole (or anchor cable) spacing according to structure;
7) the stressed size of carrying of distribution crag braced structures and anchor pole (or anchor cable);
8) design obtains crag support-anchor combined supporting administration structure in a conventional manner.
2, support-anchor combined protection and harness method for dangerous rock according to claim 1, it is characterized in that: the described method of determining actual master control architecture face of searching is: the utilization rock drill is implemented the overlength boring of some on the crag body, removal of core is checked the appearance position of determining the actual master control architecture face of rock mass in the rock core.
3, support-anchor combined protection and harness method for dangerous rock according to claim 2 is characterized in that: the length of described overlength boring surpasses just decides master control architecture face 5～8m, and its quantity is at least 3.
4, support-anchor combined protection and harness method for dangerous rock according to claim 1 is characterized in that: when determining the position of crag braced structures, make its center of effort be arranged on the crag body weight heart outside.
5, support-anchor combined protection and harness method for dangerous rock according to claim 4 is characterized in that: the center of effort of described crag braced structures is arranged on crag body weight heart outside 2～5m.
6, support-anchor combined protection and harness method for dangerous rock according to claim 1 is characterized in that: the distribution of the stressed size of carrying of crag braced structures and anchor pole (or anchor cable) distributes to according to 70～80% of all vertical forces that crag braced structures, all the other vertical forces and pulling force are distributed to anchor pole or (anchor cable) distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100543357A CN100410456C (en) | 2006-05-31 | 2006-05-31 | Support-anchor combined protection and harness method for dangerous rock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100543357A CN100410456C (en) | 2006-05-31 | 2006-05-31 | Support-anchor combined protection and harness method for dangerous rock |
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| Publication Number | Publication Date |
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| CN1884718A true CN1884718A (en) | 2006-12-27 |
| CN100410456C CN100410456C (en) | 2008-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100543357A Expired - Fee Related CN100410456C (en) | 2006-05-31 | 2006-05-31 | Support-anchor combined protection and harness method for dangerous rock |
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| CN (1) | CN100410456C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113521A (en) * | 2015-09-18 | 2015-12-02 | 浙江科技学院 | Net-rope-and-plug-linked-type landscape anchoring device used for preventing falling type dangerous rock |
| CN105672240A (en) * | 2016-01-25 | 2016-06-15 | 黄河勘测规划设计有限公司 | Treatment method for toppling and destructing dangerous rock masses |
| CN107326916A (en) * | 2017-07-31 | 2017-11-07 | 中铁大桥局集团第五工程有限公司 | A kind of rockfall means of defence |
| CN108179911A (en) * | 2018-03-08 | 2018-06-19 | 中国地质科学院探矿工艺研究所 | Collapse prevention and control project self-adaptive support structure and method |
| CN108193678A (en) * | 2018-01-24 | 2018-06-22 | 中冶沈勘工程技术有限公司 | The computational methods of rockwork anchor pole interaction boundary spacing and the ultimate pullout capacity computational methods of rockwork anchor pole |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044272C (en) * | 1993-06-24 | 1999-07-21 | 陈国亮 | Engineering method for consolidating mountain slip surface and raising resistance to sliding |
| JP4100619B2 (en) * | 2003-02-21 | 2008-06-11 | ライト工業株式会社 | Rock fall prevention method |
| JP3865708B2 (en) * | 2003-04-21 | 2007-01-10 | 大和工業株式会社 | Slope stabilization method |
-
2006
- 2006-05-31 CN CNB2006100543357A patent/CN100410456C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113521A (en) * | 2015-09-18 | 2015-12-02 | 浙江科技学院 | Net-rope-and-plug-linked-type landscape anchoring device used for preventing falling type dangerous rock |
| CN105672240A (en) * | 2016-01-25 | 2016-06-15 | 黄河勘测规划设计有限公司 | Treatment method for toppling and destructing dangerous rock masses |
| CN105672240B (en) * | 2016-01-25 | 2017-06-27 | 黄河勘测规划设计有限公司 | Inclining destruction type Dangerous Rock Body administering method |
| CN107326916A (en) * | 2017-07-31 | 2017-11-07 | 中铁大桥局集团第五工程有限公司 | A kind of rockfall means of defence |
| CN108193678A (en) * | 2018-01-24 | 2018-06-22 | 中冶沈勘工程技术有限公司 | The computational methods of rockwork anchor pole interaction boundary spacing and the ultimate pullout capacity computational methods of rockwork anchor pole |
| CN108193678B (en) * | 2018-01-24 | 2019-10-29 | 中冶沈勘工程技术有限公司 | The calculation method of rockwork anchor pole interaction boundary spacing and the ultimate pullout capacity calculation method of rockwork anchor pole |
| CN108179911A (en) * | 2018-03-08 | 2018-06-19 | 中国地质科学院探矿工艺研究所 | Collapse prevention and control project self-adaptive support structure and method |
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| Publication number | Publication date |
|---|---|
| CN100410456C (en) | 2008-08-13 |
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Effective date of registration: 20081128 Address after: No. 66, Xuefu Avenue, Nan'an District, Chongqing: 400074 Patentee after: chongqing jiaotong university Address before: Institute of geotechnical engineering, Chongqing Jiaotong University, Nan'an District, Chongqing: 400074 Co-patentee before: Tang Hongmei Patentee before: Chen Hong Kai |
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Owner name: CHONGQING JIAOTONG UNIVERSITY Free format text: FORMER OWNER: CHEN HONGKAI Effective date: 20081128 |
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Granted publication date: 20080813 |