CN109778599A - Infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden - Google Patents
Infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden Download PDFInfo
- Publication number
- CN109778599A CN109778599A CN201910085680.4A CN201910085680A CN109778599A CN 109778599 A CN109778599 A CN 109778599A CN 201910085680 A CN201910085680 A CN 201910085680A CN 109778599 A CN109778599 A CN 109778599A
- Authority
- CN
- China
- Prior art keywords
- humidity sensor
- layer
- vertical
- water
- mud stone
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Abstract
The present invention relates to high-speed railway subgrade technical fields, infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden, by digging foundation pit at the scene, in point inside and outside, the multiple humidity sensors of upper and lower arrangement laterally, vertical, it is filled the water to seepage channel, when heap loading provides target overlying burden value, observe and record humidity data, and has quantity automatic control function, it is calculated by measurement data, obtains horizontal infiltration coefficient and vertical infiltration coefficient of the live original state mud stone under overlying burden effect.Advantage: the inconvenience that the long-term scene in field is garrisoned is overcome.Which can really, effectively reflect mud stone infiltration coefficient in actual operation, bigger to engineering significance.
Description
Technical field
The present invention relates to high-speed railway subgrade technical field, system is permeated under specially a kind of high-speed rail ground mud stone overlying burden
Several measurements.
Background technique
Swelled ground is a kind of mainly by strongly hydrophilic clay mineral and its special soils of mixed layer clay mineral composition, has and inhales
Water expansion, dehydration shrinkage, deformation have the characteristics that repeatability, multiple and long-term potentiality with destroying, to subgrade stability and
Engineering safety is totally unfavorable.Ballastless track of high-speed railway is extremely stringent to roadbed deformation requirements, and arch permission adjustment amount is only
4mm, when high-speed railway passes through expansive mud-stone location, influence due to water to mud stone will lead to roadbed arch, and then make rail
The uneven pliable aggravation in road, this will directly affect vibration of rolling stock, wheel-rail interaction and traffic safety comfort property, finally will
Influence high-speed railway safe operation.
The arch research of the high-speed railway subgrade caused by weak expansive mud-stone ground, is rarely reported both at home and abroad.With me
The rapid development of state's high-speed railway, will emerge largely using weak expansive mud-stone as the railway engineering of ground.Moisture in mud stone ground
Infiltrate be influence mud stone expansion principal element, the moisture of infiltration is more, and mud stone dilatancy is bigger, high-speed railway subgrade arch
Amount is bigger, and the variation of overlying burden is to influence the key factor of Infiltration, and overlying burden is bigger to inhibit mud stone dilatancy
Effect is stronger, and then keeps mud stone more closely knit, and final moisture will be more difficult to infiltrate, and overlying burden is smaller to mud stone dilatancy inhibiting effect
Weaker, moisture is easier to be infiltrated.And mud stone osmotic coefficient investigating method is carried out indoors mostly at present, but interior is put to the test ruler
Very little effect, boundary condition, disturbance etc. influence, test result still cannot really, effectively reflect structures in actual operation by
Power situation；And live soil body osmotic coefficient mensuration mode is bicyclic water flood, but this method only measures the soil body in no overlying burden
The vertical infiltration coefficient for acting on the lower soil body, for there is overlying burden to act on the horizontal infiltration coefficient and vertical infiltration coefficient of the lower soil body
But it cannot achieve.
For this purpose, acting on lower mud stone ground horizontal infiltration coefficient and vertical infiltration coefficient in-site detecting for different overlying burdens
The blank of method, there is an urgent need to a kind of easy to operate, intelligent, low-cost measuring methods.
Summary of the invention
It is an object of that present invention to provide infiltration coefficient in-situ intelligent measuring methods under a kind of high-speed rail ground mud stone overlying burden.
To achieve the above object, the invention provides the following technical scheme: being permeated under a kind of high-speed rail ground mud stone overlying burden
Coefficient in-situ intelligent measuring method, equipment therefor include load top plate, and load cover top surface is placed heap loading, loaded under top plate
Surface is load column, and the load column lower end is placed on load bottom plate, and the load bottom plate center opens up hole up and down,
Seepage channel is set in through hole, and seepage channel extends downwardly, inner hollow, and side wall, bottom wall are equipped with water seepage hole；The load bottom
Plate sole arrangement waterproof membrane and sand；The seepage channel inner wall is fixed with humidity sensor, and the humidity sensor passes through first
Moisture signal line and humid control switch connect, and the humid control switch is connect by electric wire with electric operator, described
Electric operator connects electrically operated valve, and electric operator controls electrically operated valve opening and closing, and the electrically operated valve is set to water delivery
Guan Shang, water-supply-pipe one connection water storage barrel, other end are protruded into seepage channel；The humid control switch passes through power supply line and control
Device processed is connected, and flowmeter, manually-operated gate are provided on water-supply-pipe；The seepage channel lateral position and vertical position are laid laterally
Humidity sensor and vertical humidity sensor, the transverse direction humidity sensor and vertical humidity sensor pass through the second moisture signal
Line is connected to humidity logging, and the humidity logging is connected by power supply line with controller, and lateral humidity sensor is with seepage flow
Channel is that the center of circle point multilayer is laid, and vertical humidity sensor divides the multilayer of upward and downward to lay below seepage channel；The control
Device has 3 docking the end of a thread, a pair of of connector lug positive and negative anodes connection power supply device, a pair of of connector lug positive and negative anodes connection battery, a docking
The end of a thread positive and negative anodes are switched with humid control and humidity logging is connected.
Operation, continuous mode: 1) selecting one piece of place in plan measured zone, remove earth's surface surface dust, excavate testing foundation ditch,
After the completion of excavation of foundation pit, to the leveling of hole bottom；
2) free face is excavated in foundation pit side, free face depth is greater than foundation depth；
3) bottom of foundation ditch excavates round test area, flattens after the completion to each test area；
4) by the vertical water injection hole of foundation pit border circular areas centre drill；
5) around water injection hole vertical direction brill transverse direction humidity sensor putting hole；It is opened on free face side wall below foundation pit
Dig vertical humidity sensor putting hole；
6) lateral humidity sensor and vertical humidity sensor are individually positioned in lateral humidity sensor putting hole, vertical humidity
In sensor putting hole, notice that sensor probe is contacted with hole wall reality soil, will laterally, vertically humidity sensor signal line and humidity
Logging is connected, the booting of humidity logging, checks whether humidity sensor operation is normal, replaces immediately if any abnormal；
7) foundation pit border circular areas surface spreads one layer of sand, the whole level in sand upper surface, and layer of sand will box out for seepage channel and prevent sand from falling
Into in water injection hole, waterproof membrane is spread on sand surface, prevents moisture when water filling from evaporating from soil body surface, waterproof center membrane is seepage channel
By there is borehole；
8) in the through hole of seepage channel upper end insertion load bottom plate, seepage channel is put into water injection hole, and load bottom plate is placed in
On waterproof membrane；
9) load plate upper surface installation load column, loads and places load top plate on column, and load cover top surface places heap
Loading reaches target overlying burden value；
10) humid control switch is connect into electricity, opens manually-operated gate, water-supply-pipe water flowing, electric operator, electrically operated valve and humidity
Control switch linkage, when humidity sensor humidity is setting low value, humid control switch receives moisture signal and sets low value, humidity
Control switch controls electric operator, electrically operated valve is opened, in water infiltration circulation road；When humidity sensor humidity is setting
High level, humid control switch receive moisture signal and set high level, and humid control switch control electric operator, electrically operated valve close
It closes, stops filling the water to seepage channel, reaching seepage channel has water but not excessive requirement；
11) lateral humidity sensor and vertical humidity sensor reading are observed and recorded, all lateral humidity sensors and vertical
After humidity sensor stable reading, show that test area mud stone seeps water uniformly, completely；
12) mud stone seepage flow speed calculates:
For three layers, from inside to outside, first layer, the second layer, third layer transverse direction humidity sensor are apart from penetrating passage edge
Distance be respectively h1、h2、h3, h1< h2< h3, from top to bottom, the vertical humidity sensor of first layer, the second layer, third layer away from
It is respectively s with a distance from penetrating passage bottom1、s2、s3, s1< s2< s3；
First layer transverse direction humidity sensor is from starting to measure volumetric water content to the final volume moisture content stable time used point
It Wei not t11、t12、t13、t14, second layer transverse direction humidity sensor is from starting to measure volumetric water content to final volume moisture content stabilization
Time used is respectively t21、t22、t23、t24, third layer transverse direction humidity sensor is from starting to measure volumetric water content to final body
The product moisture content stable time used is respectively t31、t32、t33、t34, the vertical humidity sensor of first layer, the second layer, third layer from
Starting the time used in measurement volumetric water content to final volume moisture content stabilization is respectively t1、t2、t3；
Mud stone transverse direction seepage flow speed: first layer: v11=h1/t11、v12=h1/t12、v13=h1/t13、v14=h1/t14, average value v1p=
(v11+ v12+ v13 +v14)/4
The second layer: v21=h2/t21、v22=h2/t22、v23=h2/t23、v24=h2/t24, average value v2p=(v21+ v22+ v23 +v24)/4
Third layer: v31=h3/t31、v32=h3/t32、v33=h3/t33、v34=h3/t34, average value v3p=(v31+ v32+ v33 +v34)/4
The vertical seepage flow speed of mud stone: first layer: v1=s1/t1, the second layer: v2=s2/t2, third layer: v3=s3/t3
The unit of distance uses m, and the unit of time uses s, and then lateral seepage flow speed and the unit of vertical infiltration rate are m/
S, the infiltration rate is consistent with infiltration coefficient dimension, due to being to measure at the scene, and what is measured is original state mud stone, is thus showed
The horizontal infiltration coefficient and vertical infiltration coefficient of original state mud stone under overlying burden effect, when heap loading weight size conversion,
When the difference of humidity sensor position, horizontal infiltration of the original state mud stone under different overlying burdens, at different seepage distances is just obtained
Coefficient and vertical infiltration coefficient.
Preferably, the infiltration hole shape on seepage channel is plum blossom-shaped, and the water seepage hole of side wall has 4 column.
Further, the trend reduced from top to bottom is presented in the size of the water seepage hole of the seepage channel side wall.
Preferably, the lateral humidity sensor quantity is 24, and 24 lateral humidity sensors divide upper layer and lower layer each
12, every layer along 0 ° of seepage channel clockwise direction seen from above, 90 °, 180 °, 270 ° of layings.
Preferably, the vertical humidity sensor quantity is 3, point three layer arrangements immediately below seepage channel center.
Preferably, the humidity logging has measuring signal radio transmitting device
Further, power supply device is using solar powered, in controller a pair of of connector lug positive and negative anodes connection solar battery
Plate, the solar panel by controller daytime to humid control switch, humidity logging, electric operator,
Electrically operated valve power supply, also charges to battery；By battery to humid control switch, humidity logging, electricity when night
Dynamic executing agency, electrically operated valve power supply.
The load top plate and load bottom plate is circular steel plate.
Based on the above-mentioned technical proposal, invention at least can produce following advantage:
1, infiltration coefficient in-site detecting device under the high-speed rail mud stone ground overlying burden, is opened by humidity sensor, humid control
Pass, electric operator, electrically operated valve, water storage barrel fully-automatic intelligent water flooding regime, overcome traditional artificial recharge mode,
It ensure that the round-the-clock uninterrupted infiltration of mud stone.
2, infiltration coefficient in-site detecting device under the high-speed rail mud stone ground overlying burden by lateral humidity sensor, erects
To the mode of humidity sensor and humidity logging measurement mud stone volumetric water content, according to the situation of change of volumetric water content, seep
Saturating distance and time of penetration, can calculate the horizontal infiltration coefficient and vertical infiltration coefficient of mud stone.
3, infiltration coefficient in-site detecting device under the high-speed rail mud stone ground overlying burden passes through solar panel, control
Device, battery and the humidity of wireless transmission logging can realize it is round-the-clock, automatically acquire data, overcome field power supply ask
Topic and the original state soil body because permeate relatively slow, time of penetration it is longer brought by the inconvenience garrisoned of the long-term scene of tester.
4, infiltration coefficient in-site detecting device under the high-speed rail mud stone ground overlying burden, convenient, automatic intelligent journey of constructing
Degree is high, low in cost, compares other soil body osmotic coefficient measuring methods, and which can really, effectively reflect mud stone in practical work
Infiltration coefficient in work is bigger to engineering significance.
Detailed description of the invention
Fig. 1 is the site operation layout drawing of overlook direction；
Fig. 2 is the site operation layout drawing of side-looking direction；
Fig. 3 is test area elevation；
Fig. 4 is seepage channel side expanded view；
Fig. 5 is structure of the invention composition schematic diagram；
Transverse direction humidity sensor (a) and vertical humidity sensor (b) time-history curves when Fig. 6 overlying burden is 15kPa；
Transverse direction humidity sensor (a) and vertical humidity sensor (b) time-history curves when Fig. 7 overlying burden is 30kPa；
Transverse direction humidity sensor (a) and vertical humidity sensor (b) time-history curves when Fig. 8 overlying burden is 45kPa；
Horizontal infiltration coefficient (a) and vertical infiltration coefficient (b) under Fig. 9 difference overlying burden；
Figure 10 is plum blossom-shaped water seepage hole schematic diagram；
In figure: 1- loads top plate, the loading of 2- heap, 3- load column, 4- load bottom plate, 5- seepage channel, 6- humidity sensor, 7-
First moisture signal line, 8- humid control switch, 9- electric wire, 10- electric operator, 11- electrically operated valve, 12- water-supply-pipe,
13- water storage barrel, 14- power supply line, 15- controller, 16- transverse direction humidity sensor, the vertical humidity sensor of 17-, the second humidity of 18-
Signal wire, 19- humidity logging, 20- solar panel, 21- battery, 22- flowmeter, 23- manually-operated gate, the ground 24-,
25- waterproof membrane, 26- sand, 35- free face, 36- transverse direction humidity sensor be hole arranged, 37- test area, 38- water injection hole, 39- are perpendicular
, 40- water seepage hole hole arranged to humidity sensor, 41- test area, the drilling of 42- horizontal direction.
Specific embodiment
Below with reference to attached drawing of the invention, clear, complete description is carried out to technical solution of the present invention.
Infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden, equipment therefor is referring to Fig. 4-5
It is shown, including load top plate 1, the placement heap loading 2 of load 1 upper surface of top plate, load 1 lower surface of top plate is load column 3, described
Load 3 lower end of column is placed on load bottom plate 4, and 4 center of load bottom plate opens up hole up and down, and seepage flow is arranged in through hole
Channel 5, seepage channel 5 extend downwardly, inner hollow, and side wall, bottom wall are equipped with water seepage hole 40；4 sole arrangement of load bottom plate
Waterproof membrane 25 and sand 26；5 inner wall of seepage channel is fixed with humidity sensor 6, and the humidity sensor 6 passes through the first humidity
Signal wire 7 is connect with humid control switch 8, and the humid control switch 8 is connect by electric wire 9 with electric operator 10, institute
It states electric operator 10 and connects electrically operated valve 11, electric operator 10 controls electrically operated valve 11 and is opened and closed, the electrically operated valve
11 are set on water-supply-pipe 12, and water-supply-pipe 12 1 connection water storage barrels 13, other ends are protruded into seepage channel 5；The humidity control
System switch 8 is connected by power supply line 14 with controller 15, and flowmeter 22, manually-operated gate 23 are provided on water-supply-pipe 12；The infiltration
5 lateral position of circulation road and vertical position lay lateral humidity sensor 16 and vertical humidity sensor 17, the transverse direction humidity
Sensor 16 and vertical humidity sensor 17 pass through the second moisture signal line 18 and are connected to humidity logging 19, the humidity inspection
Instrument 19 is connected by power supply line 14 with controller 15, and lateral humidity sensor 16 is laid by the center of circle point multilayer of seepage channel, is erected
The multilayer of upward and downward is divided to lay below seepage channel to humidity sensor 17；Controller 15 has 3 docking the end of a thread, wherein left side one
Positive and negative anodes connector lug is connect with solar panel 20, intermediate a pair of positive and negative anodes connector lug is connected with battery 21, right side one
It is connected to positive and negative anodes connector lug with humid control switch 8 and humidity logging 19.Solar panel 20 is existed by controller 15
Daytime to humid control switch 8, humidity logging 19, electric operator 10, electrically operated valve 11 power, also to battery 21 into
Row charging；By battery 21 to humid control switch 8, humidity logging 19, electric operator 10, electrically operated valve when night
11 power supplies.Using solar powered, can solve field use it is inconvenient the problem of.
Operation, continuous mode: as shown in Fig. 1-3,5,1) in one piece of place of plan measured zone selection, remove earth's surface about
The surface dust of 0.4m thickness excavates testing foundation ditch, foundation pit bottom size 2m × 1.75m, deep 0.4m, side slope ratio 2: 1, excavation of foundation pit completion
Afterwards, to the leveling of hole bottom.
2) foundation pit side excavate free face, free face depth be greater than foundation depth, free face length × wide × depth for 2 m ×
0.5 m×2m。
3) bottom of foundation ditch excavates round test area, and round test area diameter is 0.75m, depth 0.1m, after the completion to each
Test area is flattened.
4) vertical water injection hole is bored at foundation pit border circular areas center with drilling machine, fills the water bore dia 0.08m, depth 0.5m.
5) around water injection hole vertical direction brill transverse direction humidity sensor putting hole；Free face side wall below foundation pit
It is upper to excavate vertical humidity sensor putting hole.
6) by lateral humidity sensor 16 and vertical humidity sensor 17 be individually positioned in lateral humidity sensor putting hole,
In vertical humidity sensor putting hole, notice that sensor probe is contacted with hole wall reality soil, is preferably inserted into the real soil of hole wall, it will be horizontal
It is connected to, vertical humidity sensor signal line with humidity logging 19, the booting of humidity logging checks that humidity sensor operation is
It is no normal, it is replaced immediately if any abnormal.
7) foundation pit border circular areas surface spreads one layer of sand, the whole level in sand upper surface, and layer of sand will box out and prevent for seepage channel
Sand is dropped into water injection hole, is spread waterproof membrane (selecting from polymeric material film, such as polyethylene film) on sand surface, is prevented from filling the water
Shi Shuifen is evaporated from soil body surface, and waterproof center membrane is seepage channel by there is borehole.
8) in the through hole of 5 upper end of seepage channel insertion load bottom plate 4, seepage channel 5 is put into water injection hole, loads bottom plate
4 are placed on waterproof membrane.
9) load 4 upper surface of bottom plate installation load column 3 loads and places load top plate 1 on column 3, loads table on top plate 1
Heap loading 2 is placed in face, reaches target overlying burden value.
10) humid control switch 8 is connect into electricity, opens manually-operated gate, 12 water flowing of water-supply-pipe, electric operator, motor-driven valve
Door and humid control switch gearing, when humidity sensor humidity is setting low value (probe does not contact directly with water), humid control
Switch receives moisture signal and sets low value, and humid control switch control electric operator, electrically operated valve are opened, water infiltration stream
In channel；When humidity sensor humidity is setting high level, humid control switch receive moisture signal setting high level (humidity is maximum,
Probe is directly contacted with water), humid control switch control electric operator, electrically operated valve are closed, and are stopped to seepage channel
Water filling, reaching seepage channel has water but not excessive requirement.
11) observe and record lateral humidity sensor and vertical humidity sensor reading, all lateral humidity sensors and
After vertical humidity sensor stable reading, show that test area mud stone seeps water uniformly, completely.
12) mud stone seepage flow speed calculates:
From inside to outside, the distance of first layer, the second layer, third layer transverse direction humidity sensor apart from penetrating passage edge is respectively
h1、h2、h3, h1< h2< h3, from top to bottom, the vertical humidity sensor of first layer, the second layer, third layer is apart from penetrating passage bottom
The distance in portion is respectively s1、s2、s3, s1< s2< s3；
First layer transverse direction humidity sensor is from starting to measure volumetric water content to the final volume moisture content stable time used point
It Wei not t11、t12、t13、t14, second layer transverse direction humidity sensor is from starting to measure volumetric water content to final volume moisture content stabilization
Time used is respectively t21、t22、t23、t24, third layer transverse direction humidity sensor is from starting to measure volumetric water content to final body
The product moisture content stable time used is respectively t31、t32、t33、t34, the vertical humidity sensor of first layer, the second layer, third layer from
Starting the time used in measurement volumetric water content to final volume moisture content stabilization is respectively t1、t2、t3；
Mud stone transverse direction seepage flow speed: first layer: v11=h1/t11、v12=h1/t12、v13=h1/t13、v14=h1/t14, average value v1p=
(v11+ v12+ v13 +v14)/4
The second layer: v21=h2/t21、v22=h2/t22、v23=h2/t23、v24=h2/t24, average value v2p=(v21+ v22+ v23 +v24)/4
Third layer: v31=h3/t31、v32=h3/t32、v33=h3/t33、v34=h3/t34, average value v3p=(v31+ v32+ v33 +v34)/4
The vertical seepage flow speed of mud stone: first layer: v1=s1/t1, the second layer: v2=s2/t2, third layer: v3=s3/t3。
The unit of distance uses m, and the unit of time uses s, then the unit of lateral seepage flow speed and vertical infiltration rate
For m/s, the infiltration rate is consistent with infiltration coefficient dimension, due to being to measure at the scene, and what is measured is original state mud stone, thus
To horizontal infiltration coefficient and vertical infiltration coefficient of the live original state mud stone under overlying burden effect, when heap loading weight size becomes
Change, humidity sensor position difference when, just show that lateral under different overlying burdens, at different seepage distance of original state mud stone is seeped
Saturating coefficient and vertical infiltration coefficient.
Further preferred embodiment is: the infiltration hole shape on seepage channel 5 is plum blossom-shaped, and the water seepage hole of side wall has 4 column,
The plum blossom-shaped grogs caused by unobstructed and aperture is big that can make to seep water enters seepage channel.
More optimal solution is: the trend reduced from top to bottom is presented in the size of the water seepage hole of 5 side wall of seepage channel.It seeps bottom
Water hole aperture is 0.5cm, and the aperture 0.5cm of side wall water seepage hole lowest part, with the increase of seepage channel height, water seepage hole aperture exists
On the basis of 0.5cm, increase 0.01cm every hole aperture.Since the different depth pressure of water in seepage channel will lead to seepage flow
Beneath galleries hole seepage velocity is very fast, and upper hole seepage velocity is slower, causes lower part soil moisture content higher, and the top soil body contains
Water rate is lower, and the measurement data deviation of the humidity sensor of upper and lower level is big, influences availability of data.Gradually become using pore size
The structure of change just can solve this problem.
Lateral 16 quantity of humidity sensor is 24, and 24 lateral humidity sensors 16 divide upper layer and lower layer each 12, every layer
Along 0 ° of the clockwise direction seen from above of seepage channel 5,90 °, 180 °, 270 ° of layings.Vertical 17 quantity of humidity sensor is 3
It is a, point three layer arrangements immediately below 5 center of seepage channel.Using upper and lower, inside and outside multi-tier arrangement mode, it is ensured that measurement data
It is comprehensive, availability of data is high.
In order to reduce human attendance's time, humidity logging 19 has measuring signal wireless transmission function.Signal passes through nothing
The transmitting of line signal, reception device transmit, and remote observation, record may be implemented.Record is primary within humidity logging 19 every 20 minutes
The value of lateral humidity sensor 16 and vertical humidity sensor 17, and the value is passed back by self-contained wireless transmission function
Indoor accepting device.
The load top plate 1 and load bottom plate 4 is circular steel plate, can increase uniform force.
Embodiment analysis
Such as Fig. 6,7,8, by arching up location to Lanzhou-Xinjiang one typical subgrade of high-speed rail, using this kind of invention device carry out 15kPa,
Mud stone horizontal infiltration coefficient and vertical osmotic coefficient investigating under tri- kinds of overlying burdens of 30kPa, 45kPa.Fig. 9 is provided with this kind of method
Measurement and horizontal infiltration coefficient and vertical infiltration coefficient of the calculated high-speed railway mud stone ground under different overlying burdens, from
This method known to Fig. 9 can meet field test requirement, can make up different overlying burdens and act on lower mud stone ground horizontal infiltration coefficient
With the blank of vertical infiltration coefficient in-situ determination method.
Although an embodiment of the present invention has been shown and described, for those of ordinary skills, Ke Yili
Solution can carry out a variety of variations, modification, replacement and deformation in the case where not departing from the principle of the invention and mental condition to these embodiments,
The scope of the invention is defined by the appended claims and the equivalents thereof.
Claims (8)
1. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden, it is characterized in that: equipment therefor packet
Load top plate (1) is included, heap loading (2) are placed in load top plate (1) upper surface, and load top plate (1) lower surface is load column (3),
Load column (3) lower end is placed in load bottom plate (4), and load bottom plate (4) center opens up hole up and down, through hole
Middle setting seepage channel (5), seepage channel (5) extend downwardly, inner hollow, and side wall, bottom wall are equipped with water seepage hole (40)；It is described to add
Load floor (4) sole arrangement waterproof membrane (25) and sand (26)；Seepage channel (5) inner wall is fixed with humidity sensor (6), institute
It states humidity sensor (6) and is connect by the first moisture signal line (7) with humid control switch (8), the humid control switchs (8)
It is connect by electric wire (9) with electric operator (10), the electric operator (10) connects electrically operated valve (11), electronic to hold
Row mechanism (10) controls electrically operated valve (11) opening and closing, and the electrically operated valve (11) is set on water-supply-pipe (12), water-supply-pipe (12)
One connection water storage barrel (13), other end are protruded into seepage channel (5)；The humid control switch (8) passes through power supply line (14)
It is connected with controller (15), flowmeter (22), manually-operated gate (23) is provided on water-supply-pipe (12)；The seepage channel (5) is horizontal
Lateral humidity sensor (16) and vertical humidity sensor (17), the transverse direction humidity sensor are laid to position and vertical position
(16) pass through the second moisture signal line (18) with vertical humidity sensor (17) and be connected to humidity logging (19), the humidity is patrolled
Inspection instrument (19) is connected by power supply line (14) with controller (15), and lateral humidity sensor (16) is more as the center of circle point using seepage channel
Layer is laid, and vertical humidity sensor (17) divides the multilayer of upward and downward to lay below seepage channel；The controller (15) has 3 pairs
Connector lug, a pair of of connector lug positive and negative anodes connection power supply device, a pair of of connector lug positive and negative anodes connection battery (21), a pair of of connector lug
Positive and negative anodes are connected with humid control switch (8) and humidity logging (19)；
Operation, continuous mode: 1) it in plan measured zone selects one piece place, removes earth's surface surface dust, excavate testing foundation ditch, foundation pit
After the completion of excavation, to the leveling of hole bottom；
2) free face is excavated in foundation pit side, free face depth is greater than foundation depth；
3) bottom of foundation ditch excavates round test area, flattens after the completion to each test area；
4) by the vertical water injection hole of foundation pit border circular areas centre drill；
5) around water injection hole vertical direction brill transverse direction humidity sensor putting hole；It is opened on free face side wall below foundation pit
Dig vertical humidity sensor putting hole；
6) by lateral humidity sensor (16) and vertical humidity sensor (17) be individually positioned in lateral humidity sensor putting hole,
In vertical humidity sensor putting hole, notice that sensor probe is contacted with hole wall reality soil, will laterally, vertical humidity sensor signal
Line is connected with humidity logging (19), the booting of humidity logging, checks whether humidity sensor operation is normal, immediately if any exception
Replacement；
7) foundation pit border circular areas surface spreads one layer of sand, the whole level in sand upper surface, and layer of sand will box out for seepage channel and prevent sand from falling
Into in water injection hole, waterproof membrane is spread on sand surface, prevents moisture when water filling from evaporating from soil body surface, waterproof center membrane is seepage channel
By there is borehole；
8) in the through hole of seepage channel (5) upper end insertion load bottom plate (4), seepage channel (5) is put into water injection hole, loads bottom
Plate (4) is placed on waterproof membrane；
9) load bottom plate (4) upper surface installation load column (3) loads and places load top plate (1) on column (3), loads top plate
(1) heap loading (2) are placed in upper surface, reach target overlying burden value；
10) humid control switch (8) is connect into electricity, opens manually-operated gate, water-supply-pipe (12) water flowing, electric operator, motor-driven valve
Door and humid control switch gearing, when humidity sensor humidity is setting low value, humid control switch receives moisture signal setting
Low value, humid control switch control electric operator, electrically operated valve are opened, in water infiltration circulation road；Work as humidity sensor
Humidity is setting high level, and humid control, which switchs, receives moisture signal setting high level, humid control switch control electric operator,
Electrically operated valve is closed, and stops filling the water to seepage channel, reaching seepage channel has water but not excessive requirement；
11) lateral humidity sensor and vertical humidity sensor reading are observed and recorded, all lateral humidity sensors and vertical
After humidity sensor stable reading, show that test area mud stone seeps water uniformly, completely；
12) mud stone seepage flow speed calculates:
For three layers, from inside to outside, first layer, the second layer, third layer transverse direction humidity sensor are apart from penetrating passage edge
Distance be respectively h1、h2、h3, h1< h2< h3, from top to bottom, the vertical humidity sensor of first layer, the second layer, third layer away from
It is respectively s with a distance from penetrating passage bottom1、s2、s3, s1< s2< s3；
First layer transverse direction humidity sensor is from starting to measure volumetric water content to the final volume moisture content stable time used point
It Wei not t11、t12、t13、t14, second layer transverse direction humidity sensor is from starting to measure volumetric water content to final volume moisture content stabilization
Time used is respectively t21、t22、t23、t24, third layer transverse direction humidity sensor is from starting to measure volumetric water content to final body
The product moisture content stable time used is respectively t31、t32、t33、t34, the vertical humidity sensor of first layer, the second layer, third layer from
Starting the time used in measurement volumetric water content to final volume moisture content stabilization is respectively t1、t2、t3；
Mud stone transverse direction seepage flow speed: first layer: v11=h1/t11、v12=h1/t12、v13=h1/t13、v14=h1/t14, average value v1p=
(v11+ v12+ v13 +v14)/4
The second layer: v21=h2/t21、v22=h2/t22、v23=h2/t23、v24=h2/t24, average value v2p=(v21+ v22+ v23 +v24)/4
Third layer: v31=h3/t31、v32=h3/t32、v33=h3/t33、v34=h3/t34, average value v3p=(v31+ v32+ v33 +v34)/4
The vertical seepage flow speed of mud stone: first layer: v1=s1/t1, the second layer: v2=s2/t2, third layer: v3=s3/t3
The unit of distance uses m, and the unit of time uses s, and then lateral seepage flow speed and the unit of vertical infiltration rate are m/
S, the infiltration rate is consistent with infiltration coefficient dimension, due to being to measure at the scene, and what is measured is original state mud stone, is thus showed
The horizontal infiltration coefficient and vertical infiltration coefficient of original state mud stone under overlying burden effect, when heap loading weight size conversion,
When the difference of humidity sensor position, horizontal infiltration of the original state mud stone under different overlying burdens, at different seepage distances is just obtained
Coefficient and vertical infiltration coefficient.
2. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden according to claim 1,
It is characterized by: the infiltration hole shape on seepage channel (5) is plum blossom-shaped, the water seepage hole of side wall has 4 column.
3. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden according to claim 1,
It is characterized by: the size of the water seepage hole of seepage channel (5) side wall is in the trend reduced from top to bottom.
4. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden according to claim 1,
It is characterized by: lateral humidity sensor (16) quantity is 24,24 lateral humidity sensors (16) are divided to upper and lower two
Each 12, layer, every layer along 0 ° of seepage channel (5) clockwise direction seen from above, 90 °, 180 °, 270 ° of layings.
5. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden according to claim 3,
It is characterized by: vertical humidity sensor (17) quantity is 3, point three layers of cloth immediately below seepage channel (5) center
It sets.
6. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden according to claim 1,
It is characterized by: the humidity logging (19) has measuring signal radio transmitting device.
7. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden according to claim 1,
It is characterized by: power supply device is using solar powered, in controller (15) a pair of of connector lug positive and negative anodes connection solar-electricity
Pond plate (20), the solar panel (20) switch (8), humidity inspection to humid control on daytime by controller (15)
Instrument (19), electric operator (10), electrically operated valve (11) power supply, also charge to battery (21)；Pass through storage when night
Battery (21) powers to humid control switch (8), humidity logging (19), electric operator (10), electrically operated valve (11).
8. infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden according to claim 1,
It is characterized by: the load top plate (1) and load bottom plate (4) is circular steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910085680.4A CN109778599B (en) | 2019-01-29 | 2019-01-29 | In-situ intelligent determination method for permeability coefficient of high-speed railway foundation mudstone under overburden load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910085680.4A CN109778599B (en) | 2019-01-29 | 2019-01-29 | In-situ intelligent determination method for permeability coefficient of high-speed railway foundation mudstone under overburden load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109778599A true CN109778599A (en) | 2019-05-21 |
| CN109778599B CN109778599B (en) | 2023-08-22 |
Family
ID=66503492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910085680.4A Active CN109778599B (en) | 2019-01-29 | 2019-01-29 | In-situ intelligent determination method for permeability coefficient of high-speed railway foundation mudstone under overburden load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109778599B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011022932A1 (en) * | 2009-08-26 | 2011-03-03 | 中冶集团武汉勘查研究院有限公司 | Testing method and device for foundation bed coefficient test |
| JP2016050389A (en) * | 2014-08-29 | 2016-04-11 | 株式会社奥村組 | Analysis method using vg model for penetration characteristic of unsaturated soil |
| CN106436673A (en) * | 2016-07-22 | 2017-02-22 | 中铁二院工程集团有限责任公司 | Field water immersion testing method of expansive soil foundation under roadbed project |
| CN106596378A (en) * | 2016-12-25 | 2017-04-26 | 湖南城市学院 | Device for batch experiment of soil body rainwater infiltration characteristics and use method thereof |
| CN108801873A (en) * | 2018-04-24 | 2018-11-13 | 兰州交通大学 | Swelled ground permeameter and its application method under a kind of high ferro difference overlying burden and variable hydraulic pressure |
| CN109001098A (en) * | 2018-08-07 | 2018-12-14 | 西南大学 | A kind of instantaneous Penetration Signature tester of soil and soil infiltration characteristics calculation method |
| CN109056738A (en) * | 2018-08-20 | 2018-12-21 | 中铁六局集团天津铁路建设有限公司 | Excavation method below high-speed railway |
-
2019
- 2019-01-29 CN CN201910085680.4A patent/CN109778599B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011022932A1 (en) * | 2009-08-26 | 2011-03-03 | 中冶集团武汉勘查研究院有限公司 | Testing method and device for foundation bed coefficient test |
| JP2016050389A (en) * | 2014-08-29 | 2016-04-11 | 株式会社奥村組 | Analysis method using vg model for penetration characteristic of unsaturated soil |
| CN106436673A (en) * | 2016-07-22 | 2017-02-22 | 中铁二院工程集团有限责任公司 | Field water immersion testing method of expansive soil foundation under roadbed project |
| CN106596378A (en) * | 2016-12-25 | 2017-04-26 | 湖南城市学院 | Device for batch experiment of soil body rainwater infiltration characteristics and use method thereof |
| CN108801873A (en) * | 2018-04-24 | 2018-11-13 | 兰州交通大学 | Swelled ground permeameter and its application method under a kind of high ferro difference overlying burden and variable hydraulic pressure |
| CN109001098A (en) * | 2018-08-07 | 2018-12-14 | 西南大学 | A kind of instantaneous Penetration Signature tester of soil and soil infiltration characteristics calculation method |
| CN109056738A (en) * | 2018-08-20 | 2018-12-21 | 中铁六局集团天津铁路建设有限公司 | Excavation method below high-speed railway |
Non-Patent Citations (2)
| Title |
|---|
| 崔晓宁;王起才;张戎令;李进前;王炳忠;: "荷载条件下兰新铁路地基泥岩吸水变形试验", 中国地质灾害与防治学报, vol. 29, no. 3, pages 127 - 132 * |
| 马丽娜;严松宏;张戎令;邓洁;李欣;: "低黏土矿物含量泥岩浸水膨胀变形的试验研究", 工业建筑, vol. 45, no. 11, pages 116 - 120 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109778599B (en) | 2023-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101956355B (en) | Subgrade structure for preventing and controlling road damage in seasonal frozen regions | |
| CN208219326U (en) | A kind of high-speed railway Karst Subgrade construction having warning function | |
| CN102519811B (en) | Model and method for testing deformation and stress variation law of intensity attenuation roadbed | |
| CN106400768B (en) | Collapsible loess tunnel submerging test method | |
| CN107503257A (en) | One kind is close to mountain high-filled subgrade stabilization and Deformation control structure and construction method | |
| CN103074882A (en) | Construction method for reinforcing island-type perennial frozen-soil foundation by adopting gravel piles | |
| CN104632244A (en) | Method for determining influences of land subsidence on subway tunnel settlement and protecting tunnel structure | |
| CN105544622B (en) | A kind of anti-floating system and its checking device of underground structure | |
| CN104404838A (en) | Collapsed loess subgrade base treatment method for railway with speed more than 200km | |
| CN103243702A (en) | Sand wrapped gravel pile construction method | |
| CN204112305U (en) | Existing railway line excavation section weak subgrade is reinforced and is used multi-functional lobby water system | |
| CN101914882B (en) | Low embankment structure in phreatic high slity soil region and construction method thereof | |
| CN110258586A (en) | Increase the structure and method of existing high roadbed tunnel backfill height | |
| CN102797248B (en) | Soil moisture meter embedding device and embedding method | |
| CN206706479U (en) | A kind of light-duty embankment suitable for deep soft soil foundation | |
| CN209703202U (en) | Infiltration coefficient in-situ intelligent measurement device under a kind of high-speed rail ground mud stone overlying burden | |
| CN202372418U (en) | Testing model for strength weakening roadbed deformation and stress change law | |
| CN107841908A (en) | For eliminating the road structure of the high embankment lateral variation sedimentation in high-speed railway abrupt slope | |
| CN109778599A (en) | Infiltration coefficient in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden | |
| CN209707509U (en) | Swell increment in-situ intelligent measurement device under a kind of high-speed rail ground mud stone overlying burden | |
| CN109781964A (en) | Swell increment in-situ intelligent measuring method under a kind of high-speed rail ground mud stone overlying burden | |
| CN105019454A (en) | Deep soft soil high-strength prestressed pipe pile hammer piling construction method | |
| CN110453542A (en) | A kind of transit railway soft rock heavy cut arch Deformation control structure and construction method | |
| CN207525557U (en) | A kind of abrupt slope is soft soil roadbed | |
| CN202849875U (en) | High-speed railroad shoulder and drainage structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |