CN102278142A - Light dewatering method vacuo - Google Patents

Light dewatering method vacuo Download PDF

Info

Publication number
CN102278142A
CN102278142A CN2011101133011A CN201110113301A CN102278142A CN 102278142 A CN102278142 A CN 102278142A CN 2011101133011 A CN2011101133011 A CN 2011101133011A CN 201110113301 A CN201110113301 A CN 201110113301A CN 102278142 A CN102278142 A CN 102278142A
Authority
CN
China
Prior art keywords
vacuum
dewatering
tube
light
row
Prior art date
Application number
CN2011101133011A
Other languages
Chinese (zh)
Other versions
CN102278142B (en
Inventor
李建伟
李志军
杨艳玲
林琳
洪开荣
温新亮
王光伟
王建军
王雄文
陈庆怀
龚天康
Original Assignee
中铁隧道集团二处有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中铁隧道集团二处有限公司 filed Critical 中铁隧道集团二处有限公司
Priority to CN 201110113301 priority Critical patent/CN102278142B/en
Publication of CN102278142A publication Critical patent/CN102278142A/en
Application granted granted Critical
Publication of CN102278142B publication Critical patent/CN102278142B/en

Links

Abstract

The invention provides a vacuum lightweight well-point dewatering method, which comprises the following steps of: arranging at least one row of working face advanced vacuum dewatering pipes according to a certain annular interval within a certain angle range of working face vault; excavating an upper step, and arranging at least one row of first vacuum dewatering pipes at a certain distance under the arch foot of the upper step; and excavating an intermediate step, and arranging at least one row of first vacuum dewatering pipes at a certain distance under the arch foot of the intermediate step. The dewatering pipes are arranged according to an excavating working method adopted in tunneling, therefore the method disclosed by the invention has the advantages of simple process, convenience for construction and operation, low energy consumption, low construction cost and good dewatering effect; and the construction equipment is simple to assort, the arrangement of large-scale equipment when other dewatering methods are adopted is reduced, and the construction equipment has the advantages of simpleness in installation, strong operability and convenience for maintenance.

Description

真空轻型井点降水方法 Light dewatering method vacuo

技术领域 FIELD

[0001] 本发明涉及一种真空轻型井点降水方法在隧道施工中的运用。 [0001] The present invention relates to a vacuum Light dewatering methods used in tunnel construction. 背景技术 Background technique

[0002] 随着国民经济的发展,铁路建设中隧道的修建数量日益增多。 [0002] With the development of the national economy, the number of railway construction in the tunnel construction is increasing. 国内隧道施工中, 由于隧道受选线条件的限制,个别隧道势必要经过一些水文、地质条件差,无形中加大了隧道的施工难度。 Domestic tunnel construction, due to the limited tunnel route selection criteria, the individual is bound to go through the tunnel worse hydrological and geological conditions, potentially increasing the difficulty of construction of the tunnel. 如桃树坪隧道,地质围岩为第三系富水、弱胶结粉细砂岩,渗透系数为8. IX 10_4Cm/S〜9. 26X l(T4Cm/S,洞内日平均涌水量在570m3以上,设计为单洞双线隧道, 隧道长3225m,全隧均为VI级围岩,施工难度大,为极高风险隧道,被国内隧道专家定性为“国内罕见,世界难题”。在整个隧道施工中降水是关键,降水的成败直接影响着隧道施工安全质量及进度,针对该种地层,选择合理的降水工艺显得尤为重要。 The peach floor tunnel surrounding rock geology Tertiary water-rich, fine powder weak cemented sandstone, permeability coefficient 8. IX 10_4Cm / S~9. 26X l / S, the daily average water inflow hole (T4Cm at least 570m3 , designed as a single-hole two-lane tunnel, tunnel length 3225m, class VI are full tunnel surrounding rock, construction difficult, high risk for the tunnel, the tunnel was characterized domestic experts as "rare in China, the world's problems." in the entire tunnel construction precipitation is the key to success or failure of rainfall directly affects the safety of tunnel construction quality and progress, for this type of formation, a reasonable choice precipitation process is particularly important.

[0003] 在该隧道,降水是建造隧道的关键工序,该工序施工技术的优劣将直接影响到隧道施工的整体布局和经济效果,是工程施工成败的关键。 [0003] In the tunnel, precipitation is the key process to build the tunnel, the pros and cons of the construction process technology will directly affect the overall layout and economic effects of tunnel construction, construction is the key to the success of the project. 在国内隧道降水的形式有各种各样,降水一直是隧道修建中的技术难点之一,随着降水理论与技术装备的不断提高,各种各样的降水工艺在隧道中应用越来越广泛。 Precipitation in the form of a wide variety of domestic tunnel, precipitation has been one of the technical difficulties tunnel construction, with increasing precipitation theory and technical equipment, a variety of precipitation process is widely applied in the tunnel . 如何才能保证降水的最佳效果,是施工不断改进和研究的方向,而真空轻型井点降水技术在隧道中的应用,在国内类似成功案例较少。 How to ensure the best results rainfall, it is the direction of the construction of continuous improvement and research, and the application of vacuum well point dewatering technology in the tunnel, in a similar domestic success stories less.

发明内容 SUMMARY

[0004] 本申请人承建了兰渝铁路桃树坪隧道4#斜井中的前期施工遗留的50. 7m斜井和505m正洞施工。 [0004] The Applicant construction of the Lanzhou-Chongqing railway construction early peach Ping Tunnel # 4 deviated legacy of 50. 7m positive slope and 505m tunnel construction. 施工中针对该隧道渗透系数小且日涌水量大的特点,摒弃了前期施工中不降水或局部只降开挖轮廓线内的地下水,未形成完整的隧道降水系统且盲目冒进的施工理念,而积极探索,认真研究,针对该种地层经过多次试验、分析、总结,首次提出“开挖轮廓线外超前降水”的理念,最终确定了本申请的真空轻型井点降水方法,并将该降水方法纳入日常工序管理之中,使隧道降水形成一个系统工作正常运转。 Construction of the tunnel for small permeability coefficient and day gushing features large, abandoned not only falling precipitation or partial excavation of underground water within the contours, not a complete tunnel system and blindly precipitation of the pre-construction concepts construction, and actively explore and study carefully, for this kind of formation after several tests, analyze, summarize, first proposed the concept of "excavation outer contour line ahead of precipitation", and ultimately determine the vacuum well point dewatering method of application, and the precipitation the method integrated into daily management process, the precipitation form a tunnel system to work normally.

[0005] 该真空轻型井点降水方法利用真空原理,使土中的水分和空气受真空吸力作用而产生水气混合液,经管路系统向上被吸入到水气分离器中。 [0005] The vacuum Light dewatering method uses the principles of vacuum, so that the soil moisture and the air gas mixture to generate water by the action of vacuum suction, is drawn up the system via line to a water gas separator. 由于空气比水轻,空气几经分离器上部由真空泵排出。 Because air is lighter than water, several air discharged from the vacuum pump portion of the separator. 在降水深度范围内,土体的重度由原来的浮重状态逐步改变为饱和重度,土体内部应力改变,增加了垂直附加土压力,土层在增加的自重应力作用下逐渐固结,增大土体抗剪强度,提高围岩的稳定性。 In the precipitation depth, from the original weight of the soil floating body weight gradually to the saturated state of severe internal stress of the soil changed, the increase of additional vertical soil pressure, soil is gradually consolidated under stress increased weight, increased soil shear strength, improve the stability of surrounding rock.

[0006] 根据本发明的一个方面提供了一种斜井用真空轻型井点降水方法,包括以下步骤:在掌子面拱顶一定角度范围内,按照一定的环向间距布设至少一排掌子面超前真空降水管;开挖上台阶,在上台阶拱脚下一定距离处安设至少一排第一真空降水管;以及开挖中台阶,在中台阶拱脚下一定距离处安设至少一排第一真空降水管。 [0006] there is provided a vacuum Inclined Light dewatering method, comprising the steps according to one aspect of the present invention: in a range of angles within the working face vault, according to certain circumferential spacing of at least one row laying shod vacuum dewatering pipe leading surface; the excavation step, first install at least one row of vacuum tubes in the precipitation step at a distance from the foot arch; and excavation step, install at least one row of the arch in the foot step at a distance a vacuum drainage tube.

[0007] 进一步,该方法包括开挖下台阶,在下台阶或仰拱底面处安设至少一排第二真空降水管。 [0007] Further, the method comprises the steps of excavation, the bottom surface of the lower step or invert install at least one row of second vacuum tube precipitation.

[0008] 进一步,该方法包括在斜井上台阶下一定距离处安设至少一根水平超前真空降水管。 [0008] Further, the method comprises the steps on the inclined set up at a distance ahead of the at least one horizontal vacuum drainage tube.

[0009] 进一步的,掌子面超前真空降水管、第一和第二真空降水管以及水平超前真空降水管均与集水总管连接,将水通过集水总管排出。 [0009] Further, the working face ahead of the vacuum dewatering tube, the first tube and the second vacuum dewatering and vacuum dewatering horizontal pipe leading to the water collecting manifold are connected, the water discharged through the water collecting manifold.

[0010] 进一步的,位于上台阶拱脚下的第一真空降水管、位于中台阶拱脚下的第一真空降水管以及位于下台阶或仰拱底面处的第二真空降水管的纵向间距为0. 5m。 [0010] Further, the step located on the arch of the foot of the first vacuum drainage tube, located in the arch of the foot step first vacuum located on the lower downcomers and the second vacuum step or longitudinal spacing Yang precipitation arch tube at the bottom surface is zero. 5m.

[0011] 进一步的,至少一排掌子面超前真空降水管布设在掌子面拱顶120°范围内,环向间距0.細,每根掌子面超前真空降水管长度为細,外插角5°〜10°,纵向搭接不小于lm。 [0011] Further, at least one row ahead of the working face and vacuum drainage tube laid in the tunnel face dome 120 ° range, 0. fine spacing ring, each working face ahead of a fine vacuum drainage tube length, extrapolating angle of 5 ° ~10 °, longitudinal lap is not less than lm.

[0012] 进一步的,在上台阶和中台阶两侧拱脚下50cm处各安设一排长度^!的第一真空降水管,外插角60°。 [0012] Further, on the step and the step at each of both sides of the foot arch install a 50cm length row ^! A first vacuum drainage tube, an outer Gusseted 60 °.

[0013] 进一步的,在下台阶两侧或仰拱底面两侧各安设一排长度5m的第二真空降水管, 外插角30°。 [0013] Further, in the next step or invert both sides of the bottom surface of each row of a length of 5m install a second vacuum drainage tube, an outer Gusseted 30 °.

[0014] 进一步的,在斜井上台阶下50cm处安设3根水平超前真空降水管(8),每根水平超前真空降水管长度为細。 [0014] Further, at 50cm install three horizontal advance vacuum drainage tube (8) at the inclined step, each of the horizontal length of the tube leading to the precipitation of fine vacuo.

[0015] 根据本发明的另一方面提供了一种正洞用真空轻型井点降水方法,包括以下步骤:在掌子面拱顶一定角度范围内,按照一定的环向间距布设至少一排掌子面超前真空降水管;开挖左、右侧壁I部和III部,在I部和III部拱脚下一定距离处安设至少一排第一真空降水管;以及开挖左、右侧壁II部和IV部,在II部和IV部拱脚下一定距离处安设至 [0015] A positive hole is provided with a vacuum light well point precipitation method, comprising the steps according to another aspect of the present invention: in a range of angles within the working face vault, according to certain circumferential spacing of at least one row laying palm subsurfaces advance vacuo downcomers; excavation left and right side wall portions I and III portion, at least one row of first install vacuum drainage pipe portion I and III at a distance from the foot arch portion; and excavation of the left and right side walls part II and part IV, section II and IV in the foot arch portion at a distance to install

少一排第一真空降水管。 At least a first row of vacuum drainage tube.

[0016] 进一步,该方法包括开挖左、右侧壁V部和VI部,在V部和VI部或仰拱底面处安设至少一排第二真空降水管。 [0016] Further, the method comprises excavating right and left side wall portions V and VI section, install at least one row in the second vacuum drainage tube portion V and VI of the invert or bottom surface.

[0017] 进一步,该方法包括在正洞左、右侧壁的I部和III部下一定距离处安设至少一根水平超前真空降水管。 [0017] Further, the method comprises the positive hole left, right side wall portions of the I and III men at a distance from the at least one horizontal install downcomers leading vacuo.

[0018] 进一步,该方法包括在正洞左、右侧壁大跨位置II部和IV部下一定距离处安设至少一根水平超前真空降水管。 [0018] Further, the method comprises the positive hole left and right side wall and a large cross-section IV men position II at some distance ahead of the vacuum level set up at least one tubular precipitation.

[0019] 进一步的,掌子面超前真空降水管、第一和第二真空降水管以及水平超前真空降水管均与集水总管连接,将水通过集水总管排出。 [0019] Further, the working face ahead of the vacuum dewatering tube, the first tube and the second vacuum dewatering and vacuum dewatering horizontal pipe leading to the water collecting manifold are connected, the water discharged through the water collecting manifold.

[0020] 进一步的,位于左、右侧壁的I部和III部拱脚下的第一真空降水管、位于左、右侧壁的II部和IV部拱脚下的第一真空降水管以及位于左、右侧壁的V部和VI部或仰拱底面处的第二真空降水管)的纵向间距为0.5m。 [0020] Further, in the left, the first vacuum dewatering pipe portion I and III of the right side wall portion of the foot arch, located on the left portion of the first vacuum dewatering tube II and IV of the right side wall portions and located on the left foot of the arches , and the right side wall portion of the V or VI of the invert at the bottom surface of the second vacuum drainage pipe) longitudinal spacing of 0.5m.

[0021] 进一步的,在左、右侧壁纵向布置的I部和III部、II部和IV部、以及V部和VI部之间通过水平支撑装置分隔。 [0021] Further, the support means between the left partition, the I and III portion of the right side wall portion longitudinally disposed, II and IV of the portion, and a V-section and by a horizontal section VI.

[0022] 进一步的,至少一排掌子面超前真空降水管布设在掌子面拱顶120°范围内,环向间距0.細,每根掌子面超前真空降水管长度为細,外插角5°〜10°,纵向搭接不小于lm。 [0022] Further, at least one row ahead of the working face and vacuum drainage tube laid in the tunnel face dome 120 ° range, 0. fine spacing ring, each working face ahead of a fine vacuum drainage tube length, extrapolating angle of 5 ° ~10 °, longitudinal lap is not less than lm.

[0023] 进一步的,在左、右侧壁的I部、III部、II部和IV部拱脚下50cm处各安设一排长度細的第一真空降水管,外插角60°。 [0023] Further, in the left, right side wall portion of the I, the foot arch portion at 50cm III, II and IV of the portion of each longitudinal row of small install a first vacuum drainage tube, an outer Gusseted 60 °.

[0024] 进一步的,在左、右侧壁的V部和VI部处或仰拱底面两侧各安设一排长度5m的第二真空降水管,外插角30°。 [0024] Further, on the left, V and VI portion of the right side wall portions invert or both sides of a bottom surface of each row length 5m install a second vacuum drainage tube, an outer Gusseted 30 °.

[0025] 进一步的,在正洞左、右侧壁的I部和III部下50cm处安设3根水平超前真空降水管,每根水平超前真空降水管长度为細。 [0025] Further, the positive holes in the left, right side wall portions of the I and III men at 50cm install three horizontal pipe leading vacuum dewatering, vacuum dewatering advance each horizontal length of the fine tube. [0026] 进一步的,在正洞左、右侧壁大跨位置II部和IV部下返50cm处安设5根水平超前真空降水管,每根水平超前真空降水管长度为細。 [0026] Further, the positive holes in the left and right side wall and a large cross-section IV men position II back at 50cm install five horizontal pipe leading vacuum dewatering, vacuum dewatering advance each horizontal length of the fine tube.

[0027] 由于采用了本发明的真空轻型井点降水方法,保证了隧道开挖正常进行。 [0027] As a result of the vacuum Light dewatering method of the present invention, to ensure the normal tunnel excavation. 施工进度是前期的2倍以上,且施做后的初期支护未出现较大变形、开裂,安全质量均得到保证, 施工得到彻底改观。 Construction progress is more than 2 times early, after initial support and facilities to do not appear large deformation, cracking, safety and quality are guaranteed, construction completely changed. 根据隧道采用的开挖工法有针对性地布置降水管,解决了隧道“水”的难题,给开挖提供了根本保障。 According to the excavation tunnel construction method used in the arrangement targeted precipitation tube tunnel solved the "water" problem, to the excavation provides a fundamental guarantee. 且该工艺简单,施工操作方便;能耗低,施工成本低,降水效果好;施工设备配套简单,减少了采用其他降水工法时大型设备的安设,安装简单,可操作性强,维修保养方便。 And the process is simple, convenient construction operation; low energy consumption, low construction cost, the precipitation effect; simple equipment for construction, reducing install large equipment when less rainfall engineering methods, simple to install, easy to operate, easy maintenance .

附图说明 BRIEF DESCRIPTION

[0028] 图1为斜井降水管布设图; [0028] FIG. 1 is a layout diagram inclined downcomers;

[0029] 图2为正洞双侧壁施工降水管布设图; [0029] FIG. 2 is a positive double sidewall construction downcomers hole layout diagram;

[0030] 图3为降水管布设纵断面图; [0031 ] 图4为降水管布设平面图; [0030] FIG. 3 is a longitudinal sectional view of the downcast pipe laid; [0031] FIG. 4 is a plan view of the laid pipe precipitation;

[0032] 图5为涌水量计算简图。 [0032] FIG. 5 is a schematic view Inflow is calculated.

[0033] 图中:1-掌子面超前真空降水管;2-第一真空降水管;3-第二真空降水管;4-初支轮廓线;5-设计中线;6-上台阶;7-集水总管;8-水平超前真空降水管;9-中台阶; 10-下台阶;11-内轨顶面;12-仰拱底面;13-1部;14-11部;15-V部;16-111部;17-IV部; 18-VI部;19-抽水机;20-真空泵;21-降水管;22-连接管;23-掌子面 [0033] Reference Numerals 1: vacuum drainage tube leading tunnel face; 2- first vacuum tube precipitation; 3- second vacuum tube precipitation; 4- First branch contour; 5- design centerline; 6- upper step; 7 - catchment header pipe; 8- horizontal pipe leading vacuum drainage; 9- in step; step at 10-; 11- inner surface of the rail head; 12- invert the bottom surface; portion 13-1; 14-11 portion; 15-V portion ; 16-111 portion; 17-IV portion; 18-VI section; 19- pumps; vacuum pump 20; 21 downcomers; 22- connection pipe; 23- tunnel face

具体实施方式 Detailed ways

[0034] 下面,以申请人承建的兰渝铁路桃树坪隧道4#斜井中的前期施工遗留的50. 7m 斜井和505m正洞施工工程为例,介绍本申请的真空轻型井点降水方法。 [0034] Next, the applicant pre-construction construction of Lanzhou-Chongqing railway tunnel floor peach # 4 deviated legacy of 50. 7m positive slope and 505m tunnel construction project as an example, this application of vacuum well point dewatering method . 其中涉及的角度、 距离、长度、降水管数量以及选材均是根据该具体工程的实际情况,结合本领域的常识确定的。 Wherein according to the angle, the distance, the length, the number of downcomers and selection are based on the actual circumstances of the particular project, in conjunction with the knowledge in the field is determined. 本领域技术人员应该知道,这些角度、距离、长度、降水管数量以及选材不局限于这里描述的情况,可以根据工程实际需要作出适当的选择,以达到良好的降水效果。 Those skilled in the art will be appreciated that these angles, distances, length, number of tubes and precipitation selection is not limited to the case described herein, may actually need to make an appropriate selection according to the project, in order to achieve a good effect precipitation.

[0035] 斜井降水管布设具体见图1,正洞双侧壁施工降水管布设见图2,降水管布设纵断面见图3,降水管布设平面图见图4。 [0035] Inclined downcomers laid specifically Figure 1, n-bis sidewall construction downcomers hole layout shown in Figure 2, Figure 3 a longitudinal section laid precipitation tube, the precipitation tubes laid plan view of Figure 4.

[0036] 图1中洞内水平真空轻型井点降水:在掌子面拱顶120°范围内,按环向间距0.½! 布设长的掌子面超前真空降水管1,外插角5°〜10°,纵向搭接不小于Im;如无法满足拱部开挖要求,拱顶降水管间距调小,进行加密。 [0036] FIG. 1 horizontal hole in vacuo Light dewatering:! Working face in the range of 120 ° dome, by spacing rings 0.½ laid long working face ahead of vacuum drainage pipe 1, an outer Gusseted 5 ° ~10 °, longitudinal lap is not less than Im; arch excavation can not meet such requirements, small dome precipitation tube pitch modulation, encryption.

[0037] 洞内垂直真空轻型井点降水:首先,开挖上台阶6,在上台阶6两侧拱脚下返h = 50cm各安设一排长度^!第一真空降水管2,外插角60°。 [0037] Inside the vertical vacuo Light dewatering: First, the excavation step 6, the step 6 on both sides of the foot arch back h = 50cm ^ length of each row of the first set up a vacuum drainage pipe 2, an outer Gusseted! 60 °. 然后,开挖中台阶9,在中台阶9 两侧拱脚下返h = 50cm各安设一排长度^!第一真空降水管2,外插角60°。 Then, excavation step 9, in step 9 back sides of the foot arch h = 50cm length of each row install a ^! A first vacuum drainage pipe 2, an outer Gusseted 60 °.

[0038] 为了降低仰拱底部水位,可在开挖下台阶10后,在下台阶10两侧或仰拱底面12 两侧各加设一排第二真空降水管3,外插角30°,长度5m。 [0038] In order to reduce the invert level of the bottom, the rear step 10, the next step 10 at both sides of the excavation or the invert 12 is provided on both sides plus a bottom surface of each row of second vacuum drainage pipe 3, outer Gusseted 30 °, the length 5m.

[0039] 位于上台阶两侧拱脚下的第一真空降水管2、位于中台阶两侧拱脚下的第一真空降水管2以及位于下台阶两侧或仰拱底面两侧的第二真空降水管3的纵向间距为0. 5m,第一和第二真空降水管均与集水总管7连接,将水通过集水总管7排出。 [0039] positioned on both sides of the foot arch of the first step vacuum drainage pipe 2, the first step in the vacuum dewatering positioned on both sides of the foot arch of the pipe 2 and is located at both sides of the stepped sides or invert the bottom surface of the second vacuum drainage tube 3 is a longitudinal spacing of 0. 5m, the first and second tubes are connected to the vacuum drainage catchment header pipe 7, the water manifold 7 is discharged through the sump. [0040] 此外,可在斜井上台阶6下返h = 50cm设3根細长水平超前真空降水管8。 [0040] Further, the step 6 may be returned at h = 50cm 3 disposed horizontally elongated tube 8 in advance on the vacuum dewatering inclined.

[0041] 图2中洞内水平真空轻型井点降水:在掌子面拱顶120°范围内,按环向间距0.½! 布设长的掌子面超前真空降水管1,外插角5°〜10°,纵向搭接不小于Im;如无法满足拱部开挖要求,拱顶降水管间距调小,进行加密。 [0041] FIG. 2 horizontal hole in vacuo Light dewatering:! Working face in the range of 120 ° dome, by spacing rings 0.½ laid long working face ahead of vacuum drainage pipe 1, an outer Gusseted 5 ° ~10 °, longitudinal lap is not less than Im; arch excavation can not meet such requirements, small dome precipitation tube pitch modulation, encryption.

[0042] 洞内垂直真空轻型井点降水:首先,开挖左、右侧壁I部13和III部16,在I部13 和III部16拱脚下返h = 50cm安设一排长度^!第一真空降水管2,外插角60°。 [0042] Inside the vertical vacuo Light dewatering: First, excavation right and left side wall portion 16 I and 13 III, 16 in the foot arch portion 13 I and III back portion install a row of h = 50cm length ^! a first vacuum drainage pipe 2, an outer Gusseted 60 °. 然后, 开挖左、右侧壁II部14和IV部17,在II部14和IV部17拱脚下返h = 50cm安设一排长度^!第一真空降水管2,外插角60°。 Then, the excavation left and right side wall portions 14 II and 17 IV, section 14 in II and IV the foot arch portion 17 back to install a row of h = 50cm length ^! A first vacuum drainage pipe 2, an outer Gusseted 60 ° .

[0043] 为了降低仰拱底部水位,开挖左、右侧壁V部15和VI部18,在V部15和VI部18 或仰拱底面两侧各加设一排第二真空降水管3,外插角30°,长度5m。 [0043] In order to reduce the invert level of the bottom of the excavation right and left side wall portions 15 V and 18 VI portions, each disposed in a row plus second vacuum drainage tube portion 15 and the V 3 VI invert portion 18 or the bottom sides , outer Gusseted 30 °, length of 5m.

[0044] 在左、右侧壁纵向布置的I部13和III部16、II部14和IV部17、以及V部15和VI部18之间通过水平支撑装置分隔。 [0044] In the left, separated by a horizontal support means between the portion 18 I and 13 III 16, IV 14, and portion 17, and a V-section portion 15 and II VI right side wall portion longitudinally disposed.

[0045] 位于左、右侧壁的I、III部拱脚下的第一真空降水管2、位于左、右侧壁的II、IV 部拱脚下的第一真空降水管2以及位于左、右侧壁的V、VI部或仰拱底面两侧的第二真空降水管3的纵向间距为0. 5m,第一和第二真空降水管与集水总管7连接,将水通过集水总管7 排出。 [0045] located on the left and right side walls of the I, III portion of the first vacuum dewatering tube foot arch 2, in the left and right side walls of II, IV a first vacuum dewatering foot arch portion of the tube 2 located on the left and right wall V, VI or a portion of the second vacuum tube precipitation invert the longitudinal spacing on both sides of the bottom surface 3 is 0. 5m, the first and second vacuum drainage pipe 7 is connected to the catchment header pipe to discharge water through the water collecting header 7 .

[0046] 此外,可在正洞左、右侧壁的I部13、III部16下返h = 50cm各布设3根細长水平超前真空降水管8 ;在正洞双侧壁大跨位置II部14、IV部17下返h = 50cm各布设5根細长水平超前真空降水管8。 [0046] Further, the hole may be left in the positive, the I portion of the right side wall 13, III back portion 16 at each of h = 50cm 3 laid horizontally elongated lead 8 and vacuum drainage pipe; large span in a double sidewall positive hole position II section 14, IV return portion 17 at each of h = 50cm elongated horizontally laid 5 8 downcomers leading vacuo.

[0047] 如图3和图4所示,真空井点系统由降水管21 (管下端有滤管)、连接管22、集水总管7和抽水设备等组成,抽水设备可包括抽水机19和真空泵20。 [0047] As shown in FIG. 3 and FIG. 4, the vacuum system consists of well point downcast pipe 21 (the lower end of the tube with a filter tube), the connection pipe 22, a catchment header pipe 7, and other components of pumping equipment, pumping equipment 19 may comprise pumps and a vacuum pump 20.

[0048] 降水管21采用Φ 32mm PP2管,集水总管7采用Φ 75mm PP2管;插入土层的降水管21必须包双层100目滤网。 [0048] The use of downcomers 21 Φ 32mm PP2 tube catchment header pipe 7 using Φ 75mm PP2; precipitation tube 21 is inserted into the soil must be double pack 100 mesh strainer. 每排降水管与集水总管连接,集水总管7接入真空泵20。 Each row of the catchment header pipe downcomers connected to a vacuum pump 20 access catchment header pipe 7. 降水管和集水总管之间采用32mm钢丝软管连接,并在连接部位加设阀门,控制井管降水;集水总管和真空泵连接采用75mm钢丝软管连接。 Between the tube and the precipitation using 32mm steel catchment header pipe hose connection, and setting up the connection portion of the valve, controlled precipitation well pipe; catchment header pipe and a vacuum pump connected to hose connection using wire 75mm.

[0049] 下面,介绍利用该真空轻型井点降水方法的施工方法。 [0049] The following describes the construction methods using the vacuum light well dewatering.

[0050] 一、施工准备 [0050] First, the construction preparation

[0051 ] 1、编制真空轻型井点降水施工组织设计。 [0051] 1, the preparation of vacuum well point dewatering construction design.

[0052] 2、降水管及集水总管的购置,集水总管的加工; [0052] 2, precipitation catchment header pipe and acquisition, processing catchment header pipe;

[0053] 3、根据现场实际情况,对隧道降水量进行建模选型,初步采用均质含水层潜水非完整井涌水量计算模式,计算得出570. 4m3/d,与现场实测涌水量接近。 [0053] 3, according to the actual situation, the selection tunnel precipitation modeling, using the initial homogenous aquifer water inflow submersible well NONHOLONOMIC computing model, calculated 570. 4m3 / d, with the measured proximity Inflow .

[0054] 目前,隧道涌水量主要包括四周和坑底流入的水量。 [0054] Currently, the tunnel water inflow including the sides and bottom of the pit water inflows.

[0055] 各参数取值如下:K-渗透系数(m/d),取0. 75m/d ;h_隧道动水位至含水层底板深度,取IOm ;S-基坑水位降深,取IOm ;R-影响半径,i? = 105·^ ,经计算为86. 6m ;H-潜水位高,取30m ;r0-基坑半径,取15m。 [0055] The values ​​of the parameters as follows: K- permeability coefficient (m / d), takes 0. 75m / d; h_ movable tunnel floor level to a depth of the aquifer, take IOm; S- deep pit level down, take IOm ;? the R- radius of influence, i = 105 · ^, is calculated to be 86. 6m; H- high phreatic taken 30m; r0- pit radius, taking 15m. hm_平均深度,取20m ;L-滤水管有效长度取12m ; hm_ average depth, taken 20m; L- effective drainage pipe lengths are 12m;

[0056] [0056]

Figure CN102278142AD00071

[0057] 以上参数代入公式计算得出Q = 570. 41m3/d。 [0057] The above parameters calculated in equation Q = 570. 41m3 / d. [0058] 4、根据隧道涌水量及水泵的排水能力,进行真空泵及抽水泵的选型及购置; [0058] 4. The drainage tunnel discharge and pumps, vacuum pumps and pumps for selection and purchase;

[0059] 真空泵可采用山东菏泽沪方真空降水设备有限公司的,水平扬程达20m,垂直扬程达2m,功率7. 5kw,排水量60m3/h,基本能满足现场降水要求。 [0059] The pump may be employed Heze side vacuum dewatering equipment Shanghai Co., horizontal lift of 20m, vertical lift of 2m, power 7. 5kw, displacement 60m3 / h, precipitation can basically meet the scene requirements.

[0060] 5、根据降水量的计算结果,合理布置降水管及真空泵。 [0060] 5. The calculation result of precipitation, the precipitation tubes and rational arrangement of the vacuum pump.

[0061] 6、对降水作业人员进行技术培训。 [0061] 6, precipitation job technical training.

[0062] 7、设置专门的降水班组,进行降水管路的日常安装及真空泵的维修保养,并加强检查降水管与真空泵的连接。 [0062] 7, set up a dedicated team of rainfall, daily rainfall piping installation and maintenance of the vacuum pump, and to strengthen the connection pipe inspection precipitation and vacuum pump.

[0063] 二、井点管的埋设 [0063] Second, the buried well point

[0064] 井点管的埋设可用射水法、钻孔法和冲孔法成孔,井孔直径不宜大于300mm,孔深宜比滤管底深0. 5〜1. Om0在井管与孔壁间及时用洁净中粗砂填灌密实均勻。 [0064] embedded well point water jet method can be used, drilling method and punched drilling hole, the borehole diameter of not more than 300mm, the hole depth should be a filter tube in deep 0. 5~1. Om0 timely than the hole in the wall of the well tubular filled with clean grit in a uniform dense filling. 投入滤料数量应大于计算值的85%,在地面以下Im范围内用粘土封孔。 Filter should be larger than the number of inputs Calcd 85% clay Im plugging in the range below ground.

[0065] 三、井点使用 [0065] Third, the use of well point

[0066] 井点使用前应进行试抽水,确认无漏水、漏气等异常现象后,应保证连续不断抽水。 [0066] well before the point of use should be pumping test to confirm no leakage, the gas leakage and abnormal, should ensure continuous pumping. 应备用双电源,以防断电。 Should dual power backup in case off. 一般抽水3〜5d后水位降落漏斗渐趋稳定。 After pumping 3~5d general level of depression cone has stabilized. 出水规律一般是“先大后小、先浑后清”。 Water law is generally "after the first big small, muddy clear after the first."

[0067] 在抽水过程中,应定时观测水量、水位、真空度,并应使真空泵保持在55kPa以上。 [0067] In the pumping process, the water should be regularly observed, water, vacuum, and a vacuum pump should be maintained at more than 55kPa.

[0068] 四、降水施工质量检验标准 [0068] Fourth, the construction quality inspection standards precipitation

[0069] 降水施工质量检验标准表 [0069] Precipitation construction quality inspection standards table

[0070] [0070]

Figure CN102278142AD00081

[0071] 五、降水不满足要求 [0071] Fifth, the precipitation does not meet the requirements

[0072] 工作面降水情况差时,从真空泵开始检查,检查真空泵的密封情况,是否有漏风、 松动现象;检查降水管路,是否有阻力、破裂现象影响工作面降水。 [0072] When the difference in precipitation in the face, start checking from the vacuum pump, the vacuum pump seal Check whether there is leakage, loosening; precipitation line inspection, if there is resistance, fracture phenomena affect precipitation face.

[0073] 六、增加开挖里程 [0073] Sixth, increase mileage excavation

[0074] 降水效果满足工作面需要,则增加开挖里程。 [0074] the effect of precipitation meet the needs of the face, increased excavation mileage. 按这种原理,降水管及真空泵的安装则随隧道掘进长度的增加而保持在工作面上,这样可极大提高独头掘进长度。 In this principle, the precipitation tubes and the vacuum pump is mounted with increasing length of the tunnel excavation work surface is maintained, which can greatly improve on heading length.

[0075] 七、降水成果 [0075] Seven, the outcome of precipitation

[0076] 在前期施做桃树坪隧道4#斜井时,未采取降水,导致整个作业面泥泞不堪,且掌子面经常性出现溜垮,施做初期支护段变形很大。 [0076] When applied pre-made peach Ping Tunnel # 4 inclined not to take precipitation, causing the entire work surface muddy, and the tunnel face appears regularly slipped collapse, great facilities to do the initial deformation of the support section.

[0077] 采用真空轻型井点降水方法后,降低地下水位,围岩稳定性明显增强,未出现一起掌子面溜垮。 [0077] After the vacuum Light dewatering methods, lower the water table, significantly enhanced the stability of the surrounding rock, the tunnel face with slip collapse does not occur. 且初期支护变形很小,均在规范要求值内。 Early support and deformation is small, the requirements are within specification values.

[0078] 虽然上面已经参考附图描述了本发明的实施例,但是本领域技术人员可以理解, 在不脱离本发明范围和精神的情况下,可以对本发明作出各种不同的修改和变化。 [0078] While the above embodiments have been described with the accompanying drawings with reference to embodiments of the present invention, those skilled in the art will appreciate, without departing from the scope and spirit of the invention, various modifications may be made and variations of the present invention. 因此,应该理解上述的实施例不是限制,而是各个方面的举例说明。 Thus, it should be understood that the above embodiments are not limiting, but illustrative in all aspects.

Claims (21)

1. 一种斜井用真空轻型井点降水方法,包括以下步骤:在掌子面拱顶一定角度范围内,按照一定的环向间距布设至少一排掌子面超前真空降水管⑴;开挖上台阶(6),在上台阶(6)拱脚下一定距离处安设至少一排第一真空降水管O);以及开挖中台阶(9),在中台阶(9)拱脚下一定距离处安设至少一排第一真空降水管O)。 A vacuum Inclined Light dewatering method, comprising the steps of: in the working face vault within a range of angles, according to certain pitch circumferential layout of at least one row ahead of the tunnel face ⑴ vacuum drainage tube; Excavation the step (6), install at least one row of first vacuum tube precipitation O) on the step (6) at a distance from the foot arch; excavation and a step (9), at a distance in the step (9) at the foot arch set up at least one row of the first vacuum tube precipitation O).
2.根据权利要求1所述的斜井用真空轻型井点降水方法,该方法进一步包括开挖下台阶(10),在下台阶(10)或仰拱底面(12)处安设至少一排第二真空降水管(3)。 2. Shaft according to claim 1 in vacuo light well point precipitation method, the method further comprises a step (10) for the excavation, the next step (10) or invert the bottom surface (12) at least one row of install two vacuum dewatering pipe (3).
3.根据权利要求2所述的斜井用真空轻型井点降水方法,该方法进一步包括在斜井上台阶(6)下一定距离处安设至少一根水平超前真空降水管(8)。 3. Shaft according to claim 2 in vacuo light well point precipitation method, the method further comprising the steps at a distance on inclined shaft (6) at least one horizontal lead install vacuum drainage tube (8).
4.根据权利要求3所述的斜井用真空轻型井点降水方法,其中掌子面超前真空降水管(1)、第一和第二真空降水管0,3)以及水平超前真空降水管(8)均与集水总管(7)连接, 将水通过集水总管(7)排出。 3, according to the vacuum inclined Light dewatering method, wherein the working face ahead of vacuum drainage pipe (1), first and second vacuum tubes precipitation 0,3) and a horizontal tube leading to claim vacuum dewatering ( 8) are connected to the water collecting duct (7), the water is discharged through the water collecting manifold (7).
5.根据权利要求2所述的斜井用真空轻型井点降水方法,其中位于上台阶(6)拱脚下的第一真空降水管O)、位于中台阶(9)拱脚下的第一真空降水管O)以及位于下台阶(10)或仰拱底面(12)处的第二真空降水管(3)的纵向间距为0.5m。 Shaft according to claim 2, the vacuum Light dewatering method, wherein an upper step (6) the foot arch first vacuum tube precipitation O), located in a first vacuum dewatering step (9) of the foot arch precipitation longitudinal spacing of the second vacuum tube (3) of the pipe O) and located in the lower step (10) or invert the bottom surface (12) is 0.5m.
6.根据权利要求1所述的斜井用真空轻型井点降水方法,其中至少一排掌子面超前真空降水管(1)布设在掌子面拱顶120°范围内,环向间距0.細,每根掌子面超前真空降水管(1)长度为細,外插角5°〜10°,纵向搭接不小于lm。 Shaft according to claim 1 with a vacuum Light dewatering method, wherein the at least one row ahead of the working face and vacuum drainage pipe (1) laid in the working face as claimed in claim dome 120 ° range 0 circumferential spacing. fine, each working face ahead of vacuum drainage pipe (1) a length of thin, outer Gusseted 5 ° ~10 °, longitudinal lap is not less than lm.
7.根据权利要求1所述的斜井用真空轻型井点降水方法,其中在上台阶(6)和中台阶(9)两侧拱脚下50cm处各安设一排长度^!的第一真空降水管O),外插角60°。 Shaft according to claim 1 of the vacuum Light dewatering method, wherein in the step on the foot arch at 50cm (6) and the step (9) the length of each side of a row of install ^! First vacuum downcomers O), an outer Gusseted 60 °.
8.根据权利要求2所述的斜井用真空轻型井点降水方法,其中在下台阶(10)两侧或仰拱底面(1¾两侧各安设一排长度5m的第二真空降水管(3),外插角30°。 Shaft according to claim 2 Light dewatering vacuum, wherein the lower step (10) on both sides, or invert the bottom surface (1¾ install on each side of a row of a second length of 5m vacuum drainage tube (3 claims ), outer Gusseted 30 °.
9.根据权利要求3所述的斜井用真空轻型井点降水方法,其中在斜井上台阶(6)下50cm处安设3根水平超前真空降水管(8),每根水平超前真空降水管(8)长度为細。 Shaft according to claim 3, wherein said vacuum Light dewatering method, wherein at the lower level 50cm on Shaft (6) leading install three horizontal vacuum drainage tube (8), each horizontal tube leading vacuum dewatering (8) the length of the fine.
10. 一种正洞用真空轻型井点降水方法,包括以下步骤:在掌子面拱顶一定角度范围内,按照一定的环向间距布设至少一排掌子面超前真空降水管⑴;开挖左、右侧壁I部(13)和III部(16),在I部(13)和III部(16)拱脚下一定距离处安设至少一排第一真空降水管O);以及开挖左、右侧壁II部(14)和IV部(17),在II部(14)和IV部(17)拱脚下一定距离处安设至少一排第一真空降水管O)。 10. A positive hole Light dewatering vacuum method, comprising the steps of: in the working face vault within a range of angles, according to certain pitch circumferential layout of at least one row ahead of the tunnel face ⑴ vacuum drainage tube; Excavation left and right side wall portions I (13) and part III (16), install at least one row of first vacuum tube precipitation O) in the I portion (13) and part III (16) at a distance from the foot arch; and excavation left and right side wall portions II (14) and section IV (17), in section II (14) and section IV (17) at a distance from the foot arch install at least one row of first vacuum tube precipitation O).
11.根据权利要求10所述的正洞用真空轻型井点降水方法,该方法进一步包括开挖左、右侧壁V部(15)和VI部(18),在V部(15)和VI部(18)或仰拱底面(12)处安设至少一排第二真空降水管(3)。 11. The positive holes 10 of the vacuum light well point precipitation method, the method further comprising excavation right and left side wall portions V (15) and a VI portion (18 is), V (15) and a VI portion (18), or invert the bottom surface (12) set up at least one row of second vacuum drainage tube (3).
12.根据权利要求11所述的正洞用真空轻型井点降水方法,该方法进一步包括在正洞左、右侧壁的I部(13)和III部(16)下一定距离处安设至少一根水平超前真空降水管(8)。 12. The positive holes to claim 11 of the vacuum light well point precipitation method, the method further comprises the positive hole left, at a distance from the lower portion I of the right side wall (13) and part III (16) at least install a horizontal advance vacuum drainage pipe (8).
13.根据权利要求12所述的正洞用真空轻型井点降水方法,该方法进一步包括在正洞左、右侧壁大跨位置II部(14)和IV部(17)下一定距离处安设至少一根水平超前真空降水管⑶。 13. A positive hole according to claim 12 in vacuo light well point precipitation method, the method further comprises at a distance in the positive hole right and left side wall section II - span location (14) and IV (17) An provided at least one horizontal vacuum downcomers leading ⑶.
14.根据权利要求12或13所述的正洞用真空轻型井点降水方法,其中掌子面超前真空降水管(1)、第一和第二真空降水管0,3)以及水平超前真空降水管(8)均与集水总管(7) 连接,将水通过集水总管(7)排出。 14. The positive holes 12 or claim 13 in vacuo light well point precipitation method, wherein the working face ahead of vacuum drainage pipe (1), first and second vacuum tubes precipitation 0,3) and a horizontal advance vacuum dewatering tube (8) are connected to the water collecting duct (7), the water is discharged through the water collecting manifold (7).
15.根据权利要求11所述的正洞用真空轻型井点降水方法,其中位于左、右侧壁的I 部(1¾和III部(16)拱脚下的第一真空降水管(¾、位于左、右侧壁的II部(14)和IV部(17)拱脚下的第一真空降水管O)以及位于左、右侧壁的V部(1¾和VI部(18)或仰拱底面(12)处的第二真空降水管(3)的纵向间距为0.5m。 15. The positive holes to claim 11 of the vacuum Light dewatering method, wherein in the left, the first vacuum dewatering tube I of the right side wall portion (1¾ section and III (16) of the foot arch (¾, in the left , II portion of the right side wall (14) and section IV (17) a first foot arch vacuum drainage pipe O) and located in the left, V right side wall portion (1¾ and VI (18), or invert the bottom surface (12 ) precipitation longitudinal spacing of the second vacuum tube (3) is at 0.5m.
16.根据权利要求11所述的正洞用真空轻型井点降水方法,其中在左、右侧壁纵向布置的I部(13)和III部(16)、11部(14)和IV部(17)、以及V部(15)和VI部(18)之间通过水平支撑装置分隔。 16. The positive holes to claim 11 Light dewatering vacuum method, wherein the left, the I portion (13) and part III (16) arranged longitudinally of the right side wall, 11 (14) and a portion IV ( by a horizontal partition between the support means 17), and a V-section (15) and VI (18).
17.根据权利要求10所述的正洞用真空轻型井点降水方法,其中至少一排掌子面超前真空降水管(1)布设在掌子面拱顶120°范围内,环向间距0.細,每根掌子面超前真空降水管(1)长度为細,外插角5°〜10°,纵向搭接不小于lm。 17. A positive hole according to claim 10 by a vacuum Light dewatering method, wherein the at least one row ahead of the working face and vacuum drainage pipe (1) laid in the working face dome 120 ° range 0 circumferential spacing. fine, each working face ahead of vacuum drainage pipe (1) a length of thin, outer Gusseted 5 ° ~10 °, longitudinal lap is not less than lm.
18.根据权利要求10所述的正洞用真空轻型井点降水方法,其中在左、右侧壁的I部(13)、III部(16)、11部(14)和IV部(17)拱脚下50cm处各安设一排长度^!的第一真空降水管O),外插角60°。 18. The positive-hole according to claim 10 in vacuo light well point precipitation method, wherein the left, the I portion (13) of the right side wall, III portion (16), and IV 11 (14) (17) arch install a foot at each row of 50cm length ^! first vacuum downcomers O), an outer Gusseted 60 °.
19.根据权利要求11所述的正洞用真空轻型井点降水方法,其中在左、右侧壁的V部(15)和VI部(18)处或仰拱底面(12)两侧各安设一排长度5m的第二真空降水管(3),外插角30°。 19. The positive holes to claim 11 Light dewatering vacuum method, wherein the left, V right side wall portion (15) and VI (18), or invert the bottom surface (12) on both sides of the security of provided a second row length 5m vacuum drainage tube (3), an outer Gusseted 30 °.
20.根据权利要求12所述的正洞用真空轻型井点降水方法,其中在正洞左、右侧壁的I 部(13)和III部(16)下50cm处安设3根水平超前真空降水管(8),每根水平超前真空降水管⑶长度为細。 20. The positive holes of claim 12 Light dewatering by a vacuum method, wherein the positive hole left, install the three horizontal 50cm vacuo I ahead of the right side wall portion (13) and part III (16) precipitation tube (8), each horizontal tube leading vacuum dewatering fine ⑶ length.
21.根据权利要求13所述的正洞用真空轻型井点降水方法,其中在正洞左、右侧壁大跨位置II部(14)和IV部(17)下返50cm处安设5根水平超前真空降水管(8),每根水平超前真空降水管(8)长度为細。 21. The positive holes according to claim 13 in vacuo Light dewatering method in which the positive hole left and right side wall portions large span position II (14) and section IV (17) at the back 50cm install 5 horizontal advance vacuum dewatering tube (8), each horizontal advance vacuum dewatering tube (8) length of the fine.
CN 201110113301 2011-05-04 2011-05-04 Vacuum lightweight well-point dewatering method CN102278142B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110113301 CN102278142B (en) 2011-05-04 2011-05-04 Vacuum lightweight well-point dewatering method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110113301 CN102278142B (en) 2011-05-04 2011-05-04 Vacuum lightweight well-point dewatering method

Publications (2)

Publication Number Publication Date
CN102278142A true CN102278142A (en) 2011-12-14
CN102278142B CN102278142B (en) 2014-08-13

Family

ID=45103830

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110113301 CN102278142B (en) 2011-05-04 2011-05-04 Vacuum lightweight well-point dewatering method

Country Status (1)

Country Link
CN (1) CN102278142B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102661172A (en) * 2012-05-09 2012-09-12 中铁隧道集团有限公司 Advanced precipitation method for deep-buried tunnel
CN102705006A (en) * 2012-06-07 2012-10-03 中铁十一局集团有限公司 Method for governing operating tunnel flood by adopting wellpoint dewatering method
CN103306683A (en) * 2013-06-18 2013-09-18 中铁隧道集团有限公司 Construction method for comprehensive precipitation in hole in deep-buried tunnel excavation process
CN103628887A (en) * 2013-11-28 2014-03-12 中铁十三局集团有限公司 Large-section water-rich saturated fine sand railway tunnel excavation method
CN103628888A (en) * 2013-11-28 2014-03-12 中铁十三局集团有限公司 Stability augmentation and solidification method for large-section water-rich saturation fine-silt railway tunnel
CN104240578A (en) * 2014-06-19 2014-12-24 北京工业大学 Teaching model for simulating light well point precipitation construction
CN104454001A (en) * 2014-12-11 2015-03-25 中铁十九局集团有限公司 In-tunnel dewatering system and method for tunnel in low-permeability silty-fine sand stratum
CN104533427A (en) * 2014-11-25 2015-04-22 广东省长大公路工程有限公司 Construction method for excavating surrounding rock of granite tunnel at mountainous region in rainy season
CN105114123A (en) * 2015-08-28 2015-12-02 济南城建集团有限公司 Waterproof and drainage system used for shotcrete construction stage of tunnel
CN105464669A (en) * 2015-10-31 2016-04-06 中铁二十局集团有限公司 Water-rich weak surrounding rock long-and-big tunnel construction method
CN105484791A (en) * 2016-01-16 2016-04-13 中铁十九局集团第二工程有限公司 Comprehensive tunnel drainage, precipitation and pressure reduction construction method
CN106917626A (en) * 2017-05-04 2017-07-04 西安理工大学 Dewatering construction method in double side wall hole based on saturated loess

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744100A (en) * 1980-08-26 1982-03-12 Kato Masuo Perforated water collecting pipe for draining inner wall of tunnel
JPS62291315A (en) * 1986-06-11 1987-12-18 Yuji Abe Forced draining system using vacuum device
JPH02243900A (en) * 1989-03-15 1990-09-27 Shimizu Corp Underground water processing method in tunnel construction execution
JP2001336400A (en) * 2000-05-30 2001-12-07 Sakamoto Shokai:Kk Spring water filtering method and spring water filtering apparatus
CN1766289A (en) * 2005-11-29 2006-05-03 长安大学 Centralized water discharge apparatus and method for tunnelling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744100A (en) * 1980-08-26 1982-03-12 Kato Masuo Perforated water collecting pipe for draining inner wall of tunnel
JPS62291315A (en) * 1986-06-11 1987-12-18 Yuji Abe Forced draining system using vacuum device
JPH02243900A (en) * 1989-03-15 1990-09-27 Shimizu Corp Underground water processing method in tunnel construction execution
JP2001336400A (en) * 2000-05-30 2001-12-07 Sakamoto Shokai:Kk Spring water filtering method and spring water filtering apparatus
CN1766289A (en) * 2005-11-29 2006-05-03 长安大学 Centralized water discharge apparatus and method for tunnelling

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
夏红光等: "轻型井点降水在郑州凤凰电缆隧道工程中的应用", 《探矿工程(岩土钻掘工程)》, no. 6, 25 June 2005 (2005-06-25), pages 63 - 64 *
杨勇: "洞内降水在富水砂层浅埋暗挖隧道施工中的应用", 《市政技术》, vol. 27, no. 4, 10 July 2009 (2009-07-10), pages 382 - 384 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102661172A (en) * 2012-05-09 2012-09-12 中铁隧道集团有限公司 Advanced precipitation method for deep-buried tunnel
CN102661172B (en) 2012-05-09 2014-04-09 中铁隧道集团有限公司 Advanced precipitation method for deep-buried tunnel
CN102705006A (en) * 2012-06-07 2012-10-03 中铁十一局集团有限公司 Method for governing operating tunnel flood by adopting wellpoint dewatering method
CN103306683A (en) * 2013-06-18 2013-09-18 中铁隧道集团有限公司 Construction method for comprehensive precipitation in hole in deep-buried tunnel excavation process
CN103628887A (en) * 2013-11-28 2014-03-12 中铁十三局集团有限公司 Large-section water-rich saturated fine sand railway tunnel excavation method
CN103628888A (en) * 2013-11-28 2014-03-12 中铁十三局集团有限公司 Stability augmentation and solidification method for large-section water-rich saturation fine-silt railway tunnel
CN104240578A (en) * 2014-06-19 2014-12-24 北京工业大学 Teaching model for simulating light well point precipitation construction
CN104240578B (en) * 2014-06-19 2016-08-17 北京工业大学 An analog light well point precipitation in construction teaching model
CN104533427A (en) * 2014-11-25 2015-04-22 广东省长大公路工程有限公司 Construction method for excavating surrounding rock of granite tunnel at mountainous region in rainy season
CN104454001A (en) * 2014-12-11 2015-03-25 中铁十九局集团有限公司 In-tunnel dewatering system and method for tunnel in low-permeability silty-fine sand stratum
CN105114123A (en) * 2015-08-28 2015-12-02 济南城建集团有限公司 Waterproof and drainage system used for shotcrete construction stage of tunnel
CN105114123B (en) * 2015-08-28 2017-06-23 济南城建集团有限公司 A kind of waterproof and water drainage system for the tunnel first branch construction stage
CN105464669A (en) * 2015-10-31 2016-04-06 中铁二十局集团有限公司 Water-rich weak surrounding rock long-and-big tunnel construction method
CN105484791A (en) * 2016-01-16 2016-04-13 中铁十九局集团第二工程有限公司 Comprehensive tunnel drainage, precipitation and pressure reduction construction method
CN105484791B (en) * 2016-01-16 2018-08-21 中铁十九局集团第二工程有限公司 A kind of synthesis sluicings of tunnel, depressurizes construction method at precipitation
CN106917626A (en) * 2017-05-04 2017-07-04 西安理工大学 Dewatering construction method in double side wall hole based on saturated loess

Also Published As

Publication number Publication date
CN102278142B (en) 2014-08-13

Similar Documents

Publication Publication Date Title
CN101403314B (en) Coal mine down-hole drilling hydraulic fracturing anti-reflection mash gas extraction technique
CN101638987B (en) Tunnel construction method for crossing high-pressure water-enriched fracture zone with curtain grouting and grout stopping wall
CN101349064B (en) Construction method of hydroelectric power station surge chamber vertical shaft under soft rock geological condition
CN101858217B (en) House pillar changeable panel upward demix filling mining method
CN100464055C (en) Construction method of shallow buried underground excavating tunnel super large section using PBA method
CN101761346B (en) Method for constructing metamorphic rock confined water tunnel
CN101082283A (en) Gob-side entry retaining Y-type ventilation goaf top plate pressure relief gas pumping mining method
CN101440708B (en) PBA shallow buried underground excavating close range large section three-hole separated island type structure construction method
CN102031950A (en) Hole-forming process method for comb gas extraction borehole in coal seam roof
CN1693654A (en) Gas pressure relief method of ground drilling extraction minery and goaf
CN101769154A (en) Excavation supporting method for tunnel construction
CN103362538B (en) Pressure alternate gas exhausting method by slotting and fracturing coal seams
CN101285385B (en) Undermining method for three-dimensional pipe-curtain
CN102305075A (en) Vertical shaft construction method under unfavorable geological condition
CN102392677A (en) Permeability improvement technology for coal bed gas reservoir cap by using three-dimensional fracture network modification
CN102383806B (en) Construction technology for allowing tunnel to pass through ultra-large karst cave
CN102493822B (en) Method for performing curtain grouting construction on tunnel by water rich fault influence zone
CN102926770B (en) Underground draining and grouting process in thin bedrock and thick loose sand layer rich water areas
CN103306683B (en) One kind of integrated construction method when precipitation cave deep tunnel excavation
CN102287196A (en) Method for designing long-distance small-spacing tunnel
CN103089275B (en) Control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections
CN103174453A (en) Layered hydraulic fracturing method of underground coal mine multiple coal seams
CN102606167B (en) Settlement control construction method for transverse grouting guide pipe of shallow underground excavation tunnel
CN103775127B (en) A low-air permeability and high gas seam group protective layer Gas Comprehensive Treatment
CN101230784A (en) Tunnel steel arch frame lock foot anchoring stock net-spraying composite structure

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model