阅读说明：本技术 一种组合式泥石流拦挡结构 (A kind of combined type mud-rock flow is blocked structure ) 是由 田威 高芳芳 张旭东 张丽 肖煜强 王亚威 蔡凯旋 于 2019-08-27 设计创作，主要内容包括：本发明公开了一种组合式泥石流拦挡结构,包括：垫层、坝体和固定机构；其中,坝体包含从下往上依次设置的下子坝体、中子坝体和上子坝体；中子坝体和上子坝体之间设置有第一橡胶垫,下子坝体和中子坝体之间设置第二橡胶垫；垫层位于下子坝体的下方,垫层和下子坝体之间设置有第三橡胶垫；垫层和坝体之间通过固定机构连接。该结构基于耗能、防护、修筑与维修四位一体,当坝体受到巨石冲击发生偏移时,橡胶垫能够减小其位移,预应力钢绞线则将会使其回到初始位置,冲击能量会同时被水平的橡胶垫和竖向的预应力钢绞线消耗,从而减小巨石冲力的大小,安全性好,便于施工与维护,实用性强。(It blocks structure the invention discloses a kind of combined type mud-rock flow, comprising: bed course, dam body and fixed mechanism；Wherein, dam body includes lower sub- dam body, neutron dam body and the upper sub- dam body set gradually from the bottom up；It is provided with the first rubber pad between neutron dam body and upper sub- dam body, the second rubber pad is set between lower sub- dam body and neutron dam body；Bed course is located at the lower section of lower sub- dam body, is provided with third rubber pad between bed course and lower sub- dam body；It is connected between bed course and dam body by fixed mechanism.The structure is based on energy consumption, protection, builds and maintenance quaternity, when dam body is shifted by megalith impact, rubber pad can reduce its displacement, prestress wire will then be returned to initial position, impact energy can be consumed by horizontal rubber pad and vertical prestress wire simultaneously, to reduce the size of megalith impulse force, safety is good, it is practical convenient for constructing and safeguarding.)

The structure 1. a kind of combined type mud-rock flow is blocked characterized by comprising bed course (1), dam body and fixed mechanism (8)；Its In, the dam body includes the lower sub- dam body (2) set gradually from the bottom up, neutron dam body (3) He Shangzi dam body (4)；In described Be provided with the first rubber pad (5) between sub- dam body (3) He Shangzi dam body (4), the lower sub- dam body (2) and neutron dam body (3) it Between the second rubber pad (6) are set；

The bed course (1) is located at the lower section of the lower sub- dam body (2), is arranged between the bed course (1) and the lower sub- dam body (2) There are third rubber pad (7)；It is connected between the bed course (1) and the dam body by fixed mechanism (8).

The structure 2. combined type mud-rock flow according to claim 1 is blocked, which is characterized in that the fixed mechanism (8) includes Un-bonded prestressed steel strand (801) and anchorage (802)；Wherein, multiple prestressing without bondns are vertically arranged in the dam body Steel strand wires (801), the upper end of each un-bonded prestressed steel strand (801) pass through the top of dam body and are connected with anchorage (802), the lower end of each un-bonded prestressed steel strand (801) passes through bed course (1) and is connected with anchorage (802), described Tensioning of the anchorage (802) for un-bonded prestressed steel strand (801) is fixed.

The structure 3. combined type mud-rock flow according to claim 1 is blocked, which is characterized in that multiple prestressing without bondns Steel strand wires (801) are uniformly arranged in the dam body.

The structure 4. combined type mud-rock flow according to claim 1 is blocked, which is characterized in that be provided at the top of the dam body Overflow port (9).

The structure 5. combined type mud-rock flow according to claim 1 is blocked, which is characterized in that the lee side of the dam body has The gradient, the lee side of the dam body are provided with horizontal anchored platform (10), are provided with anchorage on the horizontal anchored platform (10) (802)。

The structure 6. combined type mud-rock flow according to claim 1 is blocked, which is characterized in that the prestressing without bondn steel twists The outer cover of line (801) is equipped with sheath.

The structure 7. combined type mud-rock flow according to claim 1 is blocked, which is characterized in that first rubber pad (5), Two rubber pads (6), third rubber pad (7) thickness be respectively 8~10mm.

The structure 8. combined type mud-rock flow according to claim 5 is blocked, which is characterized in that the slope of the lee side of the dam body Degree is 1:(0.08-0.2).

The structure 9. combined type mud-rock flow according to claim 5 is blocked, which is characterized in that the horizontal anchored platform (10) Height be located at the height center of the upper sub- dam body (4), lower sub- dam body (2).

The structure 10. combined type mud-rock flow according to claim 1 is blocked, which is characterized in that the lower sub- dam body (2), in The height of sub- dam body (3) He Shangzi dam body (4) is identical.

Technical field

The present invention relates to hydraulic engineering technical fields, and in particular to a kind of combined type mud-rock flow is blocked structure.

Background technique

Mud-rock flow is a kind of extremely strong geological disaster of harmfulness, and Mountain In China area is big, alpine terrain is steep, concentrates rainfall Easily cause mud-rock flow, the basin of typical mud-rock flow generally comprises to form area, Circulation Area, accumulation area, and debris flow control works are general Setting is forming area or Circulation Area.

The structure of blocking of existing mud-rock flow mostly uses the gravity type entity blocking dam of stone masonry masonry or concreting, As having a detailed description in " disaster prevention engineering design code " to gravity type entity blocking dam, such dam body is relied primarily on The self weight of dam body and rigidity resist the impact force of mud-rock flow.Gravity type entity blocking dam have the disadvantage in that energy-dissipating property it is poor, It is not easy to repair etc. from great, anti-megalith impact force ability is poor, it is long in time limit to build, is easy whole destruction.

Summary of the invention

In order to solve the above problem, the present invention provides a kind of combined type mud-rock flow and blocks structure, which is based on energy consumption, anti- Shield builds and repairs quaternity, can reduce the size of megalith impulse force, improves the ability of the anti-megalith impact of dam body, safety Property it is good, convenient for construction and maintenance, it is practical.

In order to achieve the above object, the present invention is resolved using following technical scheme.

A kind of combined type mud-rock flow is blocked structure, comprising: bed course, dam body and fixed mechanism；Wherein, the dam body include from Under the lower sub- dam body, neutron dam body and the upper sub- dam body that up set gradually；It is provided between the neutron dam body and upper sub- dam body The second rubber pad is arranged between the lower sub- dam body and neutron dam body in first rubber pad；The bed course is located at the lower sub- dam body Lower section, be provided with third rubber pad between the bed course and the lower sub- dam body；Pass through between the bed course and the dam body Fixed mechanism connection.

Preferably, the fixed mechanism includes un-bonded prestressed steel strand and anchorage；Wherein, it is indulged in the dam body To multiple un-bonded prestressed steel strands are provided with, the upper end of each un-bonded prestressed steel strand passes through the top of dam body And it is connected with anchorage, the lower end of each un-bonded prestressed steel strand passes through bed course and is connected with anchorage, and the anchorage is used It is fixed in the tensioning of un-bonded prestressed steel strand.

Preferably, multiple un-bonded prestressed steel strands are uniformly arranged in the dam body.

Preferably, being provided with overflow port at the top of the dam body.

Preferably, the lee side of the dam body has the gradient, it is flat that the lee side of the dam body is provided with horizontal anchoring Platform is provided with anchorage in the horizontal anchored platform.

Preferably, the outer cover of the un-bonded prestressed steel strand is equipped with sheath.

Preferably, the thickness of first rubber pad, the second rubber pad, third rubber pad is respectively 8~10mm.

Preferably, the gradient of the lee side of the dam body is 1:(0.08-0.2).

Preferably, the height of the horizontal anchored platform is located at the height of the upper sub- dam body, lower sub- dam body At center.

Preferably, the lower sub- dam body, neutron dam body are identical with the height of upper sub- dam body.

Preferably, the un-bonded prestressed steel strand is arranged first at fluoran stream surface 0.5m~1m away from dam body Then a un-bonded prestressed steel strand is arranged every 1~3m along the width direction of dam body in un-bonded prestressed steel strand；Institute It is pre- every 3~5m, one soap-free emulsion polymeization of setting to state length direction of the un-bonded prestressed steel strand from the center of dam body towards dam body two sides Prestress steel strand.

Compared with prior art, the invention has the benefit that

(1) present invention is arrived soap-free emulsion polymeization post-stress Technology application by the improvement to original gravity type blocking dam Concrete mud-rock flow is blocked in dam body, and the segmentation of traditional gravity formula mud-rock flow blocking dam dam body is independent three parts (respectively Lower sub- dam body, neutron dam body and upper sub- dam body), it is laid with Horizontal limiting between every part and consumes energy rubber pad, is arranged inside dam body Un-bonded prestressed steel strand, dam body left and right ends and top do not constrain, and bottom is twisted by built-in prestressing without bondn steel Line with and basis one bed course connect.When dam body is shifted by megalith impact, rubber pad can reduce its displacement, in advance Prestress steel strand will then be returned to initial position, and impact energy can be simultaneously by horizontal rubber pad and vertical prestress steel Twisted wire consumption improves the ability of the anti-megalith impact of dam body to reduce the size of megalith impulse force.

(2) dam body is by lower sub- dam body, neutron dam body and upper sub- dam body three parts and the first rubber pad, the second rubber The dissipative members such as pad, third rubber pad assemble, and plant produced, on-site assembly, high degree may be implemented to a certain extent Upper raising construction efficiency；And the dam body of longitudinal piecemeal assembling can slow down due to local failure and cause that structure integrally destroys can Energy property, local failure part and dissipative member can all be replaced afterwards, convenient for building and safeguarding.

Detailed description of the invention

The present invention is described in further details in the following with reference to the drawings and specific embodiments.

Combined type mud-rock flow Fig. 1 of the invention is blocked the side elevational view of structure；

Fig. 2 is that combined type mud-rock flow of the invention is blocked the orthogonal view (part) of structure.

In the above figure: 1 bed course；Sub- dam body under 2；3 neutron dam bodys；Sub- dam body on 4；5 first rubber pads；6 second rubber Pad；7 third rubber pads；8 fixed mechanisms；801 un-bonded prestressed steel strands；802 anchorages；9 overflow ports；10 horizontal anchorings are flat Platform.

Specific embodiment

With reference to Fig. 1-2, a kind of combined type mud-rock flow that the embodiment of content according to the present invention is proposed is blocked structure, packet It includes: bed course 1, dam body and fixed mechanism 8；Wherein, the dam body includes lower sub- dam body 2, the neutron dam set gradually from the bottom up Body 3 and upper sub- dam body 4；The first rubber pad 5, lower sub- 2 He of dam body are provided between the neutron dam body 3 and upper sub- dam body 4 Second rubber pad 6 is set between neutron dam body 3；The bed course 1 is located at the lower section of the lower sub- dam body 2, the bed course 1 and described Third rubber pad 7 is provided between lower sub- dam body 2；It is connected between the bed course 1 and the dam body by fixed mechanism 8.

In the embodiment above, bed course 1 uses strength grade for the concrete of C20 or more, and dam body uses strength grade The concrete of C40 or more, the first rubber pad 5, the second rubber pad 6, third rubber pad 7 thickness be respectively 8~10mm.Lower son Dam body 2, neutron dam body 3 are identical with the height of upper sub- dam body 4.Bed course 1 and basic one-piece casting, dam body inside and bottom pass through solid Determine mechanism 8 to be fixedly connected with bed course 1, the top and the left and right sides of dam body are not fixed.Lower sub- dam body 2, neutron dam body 3 and on Sub- dam body 4 can placement layer by layer, can also prefabricated in-site installation, plant produced, on-site assembly, very big journey may be implemented to a certain extent Construction efficiency is improved on degree；And the dam body of longitudinal piecemeal assembling can slow down due to local failure and structure is caused integrally to destroy Possibility, local failure part and dissipative member can all be replaced afterwards, convenient for building and safeguarding.Combined type mud-rock flow of the invention Structure of blocking can buffer the megalith impact force that dam body is subject to by corresponding rubber pad, and energy consumption property is good, facilitate build and maintenance, Safety is good.

With reference to Fig. 1-2, according to one embodiment of present invention, the fixed mechanism 8 includes un-bonded prestressed steel strand 801 and anchorage 802；Wherein, multiple un-bonded prestressed steel strands 801 are vertically arranged in the dam body, each nothing is viscous The upper end of knot prestress wire 801 passes through the top of dam body and is connected with anchorage 802, and each prestressing without bondn steel twists The lower end of line 801 passes through bed course 1 and is connected with anchorage 802, of the anchorage 802 for un-bonded prestressed steel strand 801 It draws and fixes.

In the embodiment above, using the concrete of 801 corresponding presstressed reinforcing steel and surrounding of un-bonded prestressed steel strand Between can permanent opposite sliding.The serial anchorage 802 such as YLM15-2, YLM15-3, YLM15-5 can be used in anchorage 802.Pass through nothing Bed course 1 is fixedly connected by adhesion prestress steel strand 801 with anchorage 802 with dam body, and stability is good, convenient for construction and maintenance, and The displacement that dam body generates can be retracted initial position as vertical dissipative member by un-bonded prestressed steel strand 801, reduce megalith Impulse force.

With reference to Fig. 1-2, according to one embodiment of present invention, multiple un-bonded prestressed steel strands 801 are uniformly set It is placed in the dam body.

In the embodiment above, such as Fig. 1, the top width B of dam body₁For 1.5~3.5 meters (preferably 3 meters), dam body Bottom width B is B=B₁+B₂, the height of dam body is H (being determined according to the depth of ditch), and the length of dam body is L (according to the width of ditch Determine), the expression formula of the gradient i of dam body lee side is i=H/B₂, gradient i is 1:(0.08-0.2).Prestressing without bondn steel twists First un-bonded prestressed steel strand 801 is arranged in line 801 at fluoran stream surface 0.5m~1m (preferably 0.5m) away from dam body, Then a un-bonded prestressed steel strand 801 is set every 1~3m (preferably 1m) along the width direction of dam body；Soap-free emulsion polymeization Length direction of the prestress wire 801 from the center of dam body towards dam body two sides is arranged one every 3~5m (preferably 4m) Un-bonded prestressed steel strand 801, then in dam body un-bonded prestressed steel strand 801 arrangement quantity x be x=[B- (0.5~ 1)] × [L/ (3~5)].Prestressing without bondn is in steel strand wires in dam body width B₁Length in range is that the height of dam body is that H adds The sum of the height of upper anchorage 802；In dam body width B₂Length in range is that the height of horizontal anchored platform 10 adds anchorage 802 The sum of height.

With reference to Fig. 2, according to one embodiment of present invention, overflow port 9 is provided at the top of the dam body.

In the embodiment above, overflow port 9 is opened up at the top of dam body, can meet flood discharge demand.

With reference to Fig. 1, according to one embodiment of present invention, the lee side of the dam body has the gradient, the back of the dam body Stream interface is provided with horizontal anchored platform 10, is provided with anchorage 802 in the horizontal anchored platform 10.

In the embodiment above, the height of horizontal anchored platform 10 is located at the height of sub- dam body 4, lower sub- dam body 2 At center, the width of horizontal anchored platform 10 is 0.3~0.8 meter, preferably 0.4 meter.The lee side of dam body has the gradient (excellent The gradient of choosing is 1:0.2) stability of dam body entirety can be increased, the anchorage 802 in horizontal anchored platform 10 is for passing through The un-bonded prestressed steel strand 801 of horizontal anchored platform 10 carries out tensioning and fixes.

According to one embodiment of present invention, the outer cover of the un-bonded prestressed steel strand 801 is equipped with sheath.

In the embodiment above, un-bonded prestressed steel strand 801 uses the high strength low relaxed soap-free emulsion polymeization steel of 1860MPa Twisted wire, outer cover is equipped with the high density polyethylene (HDPE) sheath not less than 1.0mm, to protect un-bonded prestressed steel strand 801 not Corroded, and prevents from bonding between surrounding concrete.

Combined type mud-rock flow of the invention block structure production method be two kinds, i.e., it is cast-in-place and prefabricated, it is specific as follows:

When cast-in-place, first anchorage 802 is embedded in bed course 1, is connected with un-bonded prestressed steel strand on anchorage 802 801；Then bed course 1 and basis are poured together, then is laid with third rubber pad 7 above bed course 1；Then in third rubber pad 7 Top successively pour lower sub- dam body 2, be laid with the second rubber pad 6, pour neutron dam body 3, be laid with the first rubber pad 5, pour Sub- dam body 4, and so that the upper end of un-bonded prestressed steel strand 801 is passed through the top of upper sub- dam body 4 and pass through dam body lee side On horizontal anchored platform 10, when dam, intracorporal concrete strength reaches 70% or more, to un-bonded prestressed steel strand 801 Carry out tensioning and using anchorage 802 be fixed on the top and horizontal anchored platform 10 of sub- dam body 4 to get.

When prefabricated in-site installation, first prefabricated lower sub- dam body 2, neutron dam body 3 and upper sub- dam body 4 respectively, prefabricated lower son Dam body 2, neutron dam body 3 and upper sub- dam body 4, which respectively correspond, offers un-bonded prestressed steel strand 801 can be made to pass through logical Hole；Then anchorage 802 is embedded in bed course 1, un-bonded prestressed steel strand 801 is connected on anchorage 802, then by bed course 1 with basis pour together, the top of bed course 1 be successively laid with third rubber pad 7, prefabricated lower sub- dam body 2, the second rubber pad 6, Prefabricated neutron dam body 3, the first rubber pad 5 and prefabricated upper sub- dam body 4, and un-bonded prestressed steel strand 801 is made to pass through phase The through-hole answered；To un-bonded prestressed steel strand 801 carry out tensioning and use anchorage 802 be fixed on the top of upper sub- dam body 4 with And in horizontal anchored platform 10 to get.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modification and variations of the invention belong to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.