Method for measuring stone forest forming age and inverting river forming time
Method for measuring stone forest forming age and inverting river forming time
 CN 106,153,710 B
 Filed: 07/07/2016
 Issued: 09/18/2020
 Est. Priority Date: 07/07/2016
 Status: Active Grant
First Claim
1. A method for measuring the age of forest formation and inverting the time of river formation comprises the following steps:
 step 1, selecting a river reach A to be detected and a stone pillar B;
step 2, determining sampling points on the stone pillar B, sampling at equal intervals in different elevations, starting from the bottom of the stone pillar, taking one sampling point every 10cm, and obtaining a last section △
h from the uppermost end of the stone pillar_{x}<
10cm and △
h_{x}>
Setting a sampling point if the length is =3 cm;
sampling point is h_{0}、
h_{1}、
h_{2}、
h_{3}…
…
h_{x}；
Step 3, collecting samples of each sampling point;
when the samples of each sampling point are collected in the step 3, drilling surface stone columns for 1cm and then sampling;
step 4, determining the age of the sample at each sampling point;
step 5, obtaining stone pillar forming time according to the age measured by each sampling point;
step 6, obtaining the time from the beginning of the river to the formation of the river according to the formation time of the stone forest;
step 5 the method for obtaining the stone pillar forming time according to the age measured by each sampling point comprises the following steps;
step 5.1, △
h is obtained according to the data of each section of elevation_{1}=h_{1}h_{0}，
△
h_{2}=h_{2}h_{1}，
△
h_{3}=h_{3}h_{2}…
…
△
h_{x}= h_{x}h_{x 1}；
Step 5.2, the time period measured by sampling at different elevations is as follows;
h is_{0}Is t_{0}，
h_{1}Is t_{1}，
h_{2}Is t_{2}，
h_{3}Is t_{3}，
h_{x}Is t_{x}；
Step 5.3, calculating corresponding time of different elevation sections, △
t_{1}=t_{1}t_{0}；
△
t_{2}= t_{2} t_{1}，
△
t_{3}= t_{3} t_{2}…
…
△
t_{x}= t_{x} t_{x1}；
Step 5.4, when the forming age delta t of one or more sections of stone pillars is less than 5 years, judging that the emergency happens at the moment;
step 5.5, when the forming age delta t of each section of stone pillar is less than 5 years, the forming time of the stone pillar is the forming time of a river;
and 5.6, when the forming age delta t of each section of the stone pillar is more than 5 years, the age of the stone pillar is the time from the beginning of the river to the formation of the river.
Chinese PRB Reexamination
Abstract
The invention discloses a method for determining the age of stone forest formation and inverting the time of river formation, which comprises the steps of 1, selecting a river section A to be measured and a stone pillar B, 2, determining sampling points on the stone pillar B, sampling at equal intervals in different elevations, starting from the bottom of the stone pillar, taking a sampling point every 10cm, and reaching the top of the stone pillar, taking the last section of △ h_{x}<At 10cm, e.g. △ h_{x}>If the distance is 3cm, a sampling point needs to be set; sampling point is h_{0}、h_{1}、h_{2}、h_{3}……h_{x}(ii) a Step 3, collecting samples of each sampling point; step 4, determining the age of the sample at each sampling point; step 5, obtaining the stone pillar forming time and the time from the beginning of the river to the river forming time according to the age measured by each sampling point; the method solves the technical problems of large measurement error, inaccurate measurement and the like of the river forming time in the prior art.
2 Claims

1. A method for measuring the age of forest formation and inverting the time of river formation comprises the following steps:

step 1, selecting a river reach A to be detected and a stone pillar B; step 2, determining sampling points on the stone pillar B, sampling at equal intervals in different elevations, starting from the bottom of the stone pillar, taking one sampling point every 10cm, and obtaining a last section △
h from the uppermost end of the stone pillar_{x}<
10cm and △
h_{x}>
Setting a sampling point if the length is =3 cm;
sampling point is h_{0}、
h_{1}、
h_{2}、
h_{3}…
…
h_{x}；Step 3, collecting samples of each sampling point;
when the samples of each sampling point are collected in the step 3, drilling surface stone columns for 1cm and then sampling;step 4, determining the age of the sample at each sampling point; step 5, obtaining stone pillar forming time according to the age measured by each sampling point; step 6, obtaining the time from the beginning of the river to the formation of the river according to the formation time of the stone forest; step 5 the method for obtaining the stone pillar forming time according to the age measured by each sampling point comprises the following steps; step 5.1, △
h is obtained according to the data of each section of elevation_{1}=h_{1}h_{0}，
△
h_{2}=h_{2}h_{1}，
△
h_{3}=h_{3}h_{2}…
…
△
h_{x}= h_{x}h_{x 1}；Step 5.2, the time period measured by sampling at different elevations is as follows;
h is_{0}Is t_{0}，
h_{1}Is t_{1}，
h_{2}Is t_{2}，
h_{3}Is t_{3}，
h_{x}Is t_{x}；Step 5.3, calculating corresponding time of different elevation sections, △
t_{1}=t_{1}t_{0}；△
t_{2}= t_{2} t_{1}，
△
t_{3}= t_{3} t_{2}…
…
△
t_{x}= t_{x} t_{x1}；Step 5.4, when the forming age delta t of one or more sections of stone pillars is less than 5 years, judging that the emergency happens at the moment; step 5.5, when the forming age delta t of each section of stone pillar is less than 5 years, the forming time of the stone pillar is the forming time of a river; and 5.6, when the forming age delta t of each section of the stone pillar is more than 5 years, the age of the stone pillar is the time from the beginning of the river to the formation of the river.


2. The method for determining the age of the forest formation and the time for inverting the river formation according to claim 1, wherein the method comprises the following steps:
 the method for determining the sample age of each sampling point in step 4 comprises^{36}The Cl deposition age or the calsium deposition age utilizes accelerator substancesSpectral AMS technique determination^{36}Cl deposition age, using an unbalanced uranium system method,^{14}And C, measuring the deposition age of the calsium by a thermoluminescence method or an ESR method.
Specification(s)